subject:(Coho)

Oregon State University

1. Johnson, Marc Aaron. Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers.

Degree: PhD, Fisheries Science, 2009, Oregon State University

URL: http://hdl.handle.net/1957/11595

► For Pacific salmon, the evolution of local adaptations depends upon the species' propensity to return, or "home", to natal streams at time of reproduction. Pacific… (more)

▼ For Pacific salmon, the evolution of local adaptations depends upon the species' propensity to return, or "home", to natal streams at time of reproduction. Pacific salmon use olfactory cues to guide homing behavior, yet little is known about the genetics of olfaction in salmon. In this study, I use putatively neutral microsatellite markers to estimate demographic parameters and describe the population genetic structure of Oregon Coastal coho salmon (Oncorhynchus kisutch). Microsatellite analyses indicated weak population structure among coho populations (overall θ = 0.021), modulated by moderate levels of migration (straying). Allelic richness was higher in wild populations than both hatchery populations and wild populations from lake dominated systems. The Coos and Nehalem river populations appeared to be primary migrant sources, possibly elevating allelic richness for central coast populations. I then used genomic sequence data from nine species of salmon and trout to infer the evolutionary history for eight olfactory receptor genes, representing two major gene classes (main olfactory receptors and ORAs). Through a maximum likelihood based analysis of site-specific, non-synonymous to synonymous nucleotide substitution rates, I found strong evidence for positive selection having influenced the diversification of four paralogous main olfactory receptor genes. Main olfactory receptor orthologues appeared highly conserved among species, yet site-specific positive selection may be affecting interspecific divergence of an ORA gene in salmonids. Finally, I used molecular markers linked to olfactory receptor genes to test for a signal of selection among coho salmon populations from different rivers. By examining interlocus variance of F[subscript]ST, I found evidence for directional selection on an olfactory receptor gene-linked marker in coho salmon populations. Pairwise θ values calculated from gene-linked markers were nearly an order of magnitude greater than observed for putatively neutral microsatellites. Advisors/Committee Members: Banks, Michael A (advisor), Mundt, Christopher C (committee member).

Subjects/Keywords: coho salmon; Coho salmon – Homing – Oregon, Western

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APA (6^th Edition):

Johnson, M. A. (2009). Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/11595

Chicago Manual of Style (16^th Edition):

Johnson, Marc Aaron. “Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers.” 2009. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/11595.

MLA Handbook (7^th Edition):

Johnson, Marc Aaron. “Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers.” 2009. Web. 04 Mar 2021.

Vancouver:

Johnson MA. Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/11595.

Council of Science Editors:

Johnson MA. Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/11595

Oregon State University

2. Mackereth, Kailan F. Juvenile Coho Salmon (Oncorhynchus kisutch) Diet in Brackish and Freshwater Habitats in the Stream-estuary Ecotones of Coos Bay, Oregon.

Degree: MS, Fisheries Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/58683

► Loss of lowland estuarine and freshwater off-channel habitats along the Pacific Northwest coast has contributed to the decline of salmonid populations. These habitats serve as… (more)

▼ Loss of lowland estuarine and freshwater off-channel habitats along the Pacific Northwest coast has contributed to the decline of salmonid populations. These habitats serve as nursery grounds for juvenile salmonids providing them with food, winter shelter, and a transition zone between freshwater and saltwater. Lowland areas have undergone anthropogenic alterations (e.g., installation of tide gates, construction of dikes, channelization) to increase the net area of land suitable for agriculture and development resulting in watershed fragmentation and reduction in the amount of habitats with high intrinsic potential to support populations of juvenile salmonids. Until recent years, sub-yearling coho salmon found in lowland riverine habitats and estuarine marshes were assumed to have been displaced from optimal upland reaches by competition and high water discharge. Recent studies have concluded that early estuarine migrant behavior is volitional and these fish return as 20-40% of the spawning population, but there are few studies that delve into the capacity of estuarine habitat to support early estuarine life history strategies in systems heavily altered by human practices. This study documented differences in diet and condition factor (K) between sub-yearling and yearling coho salmon foraging concurrently in brackish or freshwater lowland habitat of the upper estuarine intertidal zone. Fish stomach contents were sampled by means of gastric lavage in three coastal lowland creeks in Coos Bay on the southern Oregon coast. Prey found in the samples were sorted, counted, identified, and dried to obtain dry weight biomass. Condition factor (K) and total dry weight prey biomass of fishes were not different between brackish and freshwater habitat; however, non-metric multidimensional scaling indicated that prey composition was substantially different between habitat and age class. These findings suggest that early migrating sub-yearlings and yearling smolts diverge in their diets whether they occupy the same or different habitats in the stream to estuary transition zone. Insects were important prey within the diets of yearling and sub-yearling freshwater foragers and sub-yearling brackish water foragers while crustaceans were important in the diets of yearling brackish water foragers. Future research exploring prey abundance and availability in relation to prey selected by juvenile coho salmon would denote habitat foraging quality and habitat exploitation by early estuarine migrants. Expanding this research to contrast natural intertidal habitats with those regulated by tide gates would be beneficial towards understanding the impact different styles of tide gates have on biotic communities and hydrological attributes (e.g., flow, chemistry, temperature, tidal exchange). Identification of factors that influence habitat selection in the stream-estuary ecotone by alternative early life history strategies of juvenile coho salmon is essential towards enhancing genetic diversity thereby strengthening the resiliency of… Advisors/Committee Members: Giannico, Guillermo R. (advisor), Li, Judith L. (committee member).

Subjects/Keywords: Coho; Coho salmon – Food – Oregon – Coos Bay

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APA (6^th Edition):

Mackereth, K. F. (2016). Juvenile Coho Salmon (Oncorhynchus kisutch) Diet in Brackish and Freshwater Habitats in the Stream-estuary Ecotones of Coos Bay, Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/58683

Chicago Manual of Style (16^th Edition):

Mackereth, Kailan F. “Juvenile Coho Salmon (Oncorhynchus kisutch) Diet in Brackish and Freshwater Habitats in the Stream-estuary Ecotones of Coos Bay, Oregon.” 2016. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/58683.

MLA Handbook (7^th Edition):

Mackereth, Kailan F. “Juvenile Coho Salmon (Oncorhynchus kisutch) Diet in Brackish and Freshwater Habitats in the Stream-estuary Ecotones of Coos Bay, Oregon.” 2016. Web. 04 Mar 2021.

Vancouver:

Mackereth KF. Juvenile Coho Salmon (Oncorhynchus kisutch) Diet in Brackish and Freshwater Habitats in the Stream-estuary Ecotones of Coos Bay, Oregon. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/58683.

Council of Science Editors:

Mackereth KF. Juvenile Coho Salmon (Oncorhynchus kisutch) Diet in Brackish and Freshwater Habitats in the Stream-estuary Ecotones of Coos Bay, Oregon. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/58683

Oregon State University

3. Crouse, Michael Robert. Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams.

Degree: MS, Fisheries and Wildlife, 1981, Oregon State University

URL: http://hdl.handle.net/1957/21968

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Crouse, M. R. (1981). Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/21968

Chicago Manual of Style (16^th Edition):

Crouse, Michael Robert. “Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams.” 1981. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/21968.

MLA Handbook (7^th Edition):

Crouse, Michael Robert. “Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams.” 1981. Web. 04 Mar 2021.

Vancouver:

Crouse MR. Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/21968.

Council of Science Editors:

Crouse MR. Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/21968

Oregon State University

4. Caldarone, Elaine Marie. Exposure of coho salmon (Oncorhynchus lisutch) to petroleum hydrocarbons : effect on lipid metabolism and aryl hydrocarbon hydroxylase activity.

Degree: MS, Fisheries and Wildlife, 1980, Oregon State University

URL: http://hdl.handle.net/1957/22421

► Coho salmon (Oncorhynchus kisutch) were exposed to sublethal levels of a water-soluble fraction (WSF) of Cook Inlet crude oil for periods ranging from 18 to… (more)

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Caldarone, E. M. (1980). Exposure of coho salmon (Oncorhynchus lisutch) to petroleum hydrocarbons : effect on lipid metabolism and aryl hydrocarbon hydroxylase activity. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22421

Chicago Manual of Style (16^th Edition):

Caldarone, Elaine Marie. “Exposure of coho salmon (Oncorhynchus lisutch) to petroleum hydrocarbons : effect on lipid metabolism and aryl hydrocarbon hydroxylase activity.” 1980. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22421.

MLA Handbook (7^th Edition):

Caldarone, Elaine Marie. “Exposure of coho salmon (Oncorhynchus lisutch) to petroleum hydrocarbons : effect on lipid metabolism and aryl hydrocarbon hydroxylase activity.” 1980. Web. 04 Mar 2021.

Vancouver:

Caldarone EM. Exposure of coho salmon (Oncorhynchus lisutch) to petroleum hydrocarbons : effect on lipid metabolism and aryl hydrocarbon hydroxylase activity. [Internet] [Masters thesis]. Oregon State University; 1980. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22421.

Council of Science Editors:

Caldarone EM. Exposure of coho salmon (Oncorhynchus lisutch) to petroleum hydrocarbons : effect on lipid metabolism and aryl hydrocarbon hydroxylase activity. [Masters Thesis]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/22421

Oregon State University

5. Hutchins, Floyd E. Influence of dissolved oxygen concentration and swimming velocity on food consumption and growth of juvenile Coho salmon.

Degree: MS, Fisheries and Wildlife, 1973, Oregon State University

URL: http://hdl.handle.net/1957/22346

► Laboratory studies were conducted on the food consumption, growth, and bioenergetics of juvenile coho salmon (Oncoynchus kisutch) held at various swimming velocities and dissolved oxygen… (more)

▼ Laboratory studies were conducted on the food consumption, growth, and bioenergetics of juvenile coho salmon (Oncoynchus kisutch) held at various swimming velocities and dissolved oxygen concentrations at 15 C. Food consumption and growth of salmon fed to repletion on housefly larvae (Mus domesticus) were reduced by increasing activity at and above 3 lengths per second (L/sec) and 2 L/sec, respectively. Food conversion efficiencies for growth decreased with increasing activity; efficiencies of converting food to growth and activity combined, however, increased with increasing activity. The logarithm of the rate of energy loss of unfed swimming salmon increased exponentially with increasing velocity. The growth rates of salmon fed to repletion and held at 1.3 and 3.0 L/sec at an oxygen level of 3 mg/liter were reduced by 20 and 65 percent from that of control salmon held at respective velocities in air-saturated water. At the intermediate oxygen concentration of 5 mg/liter, growth rates of salmon were reduced by 0 and 15 percent over controls held at 1.3 and 3.0 L/sec, respectively. The total respiration rate (TRR) of salmon fed to repletion and held at air saturation remained nearly constant over the range of activity levels tested (0 to 3.8 L/sec). At 1.3 L/sec the TRR of salmon increased with increasing food consumption, while at 3.7 L/sec increased food consumption did not alter the TRR. Reduction in oxygen concentration lowered the TRR of salmon, although growth was not reduced in every case. The specific dynamic action of food (SDA), i.e., cost of food digestion and processing, ranged from 10 to 30 percent of the assimilated energy. The larger percentages were observed at high oxygen concentrations, generally at low food consumption rates, and at low velocities; and the lower percentages at low oxygen levels, high food consumption rates, and high velocities. The absolute value of SDA increased with increasing food consumption at 1.3 L/sec, but declined at 3.7 L/sec. In salmon fed to repletion, the SDA decreased with increased activity levels and reduced oxygen concentration. Advisors/Committee Members: Shumway, Dean L. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Hutchins, F. E. (1973). Influence of dissolved oxygen concentration and swimming velocity on food consumption and growth of juvenile Coho salmon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22346

Chicago Manual of Style (16^th Edition):

Hutchins, Floyd E. “Influence of dissolved oxygen concentration and swimming velocity on food consumption and growth of juvenile Coho salmon.” 1973. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22346.

MLA Handbook (7^th Edition):

Hutchins, Floyd E. “Influence of dissolved oxygen concentration and swimming velocity on food consumption and growth of juvenile Coho salmon.” 1973. Web. 04 Mar 2021.

Vancouver:

Hutchins FE. Influence of dissolved oxygen concentration and swimming velocity on food consumption and growth of juvenile Coho salmon. [Internet] [Masters thesis]. Oregon State University; 1973. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22346.

Council of Science Editors:

Hutchins FE. Influence of dissolved oxygen concentration and swimming velocity on food consumption and growth of juvenile Coho salmon. [Masters Thesis]. Oregon State University; 1973. Available from: http://hdl.handle.net/1957/22346

Oregon State University

6. Everson, Larry B. Growth and food consumption of juvenile coho salmon exposed to natural and elevated fluctuating temperatures.

Degree: MS, Fisheries and Wildlife, 1973, Oregon State University

URL: http://hdl.handle.net/1957/22345

► The growth and food consumption of juvenile coho salmon [Oncorhynchus kisutch (Walbaum)] exposed to natural and elevated fluctuating temperatures were studied in the laboratory with… (more)

▼ The growth and food consumption of juvenile coho salmon [Oncorhynchus kisutch (Walbaum)] exposed to natural and elevated fluctuating temperatures were studied in the laboratory with wild fish collected from a salmonid rearing stream. Control temperatures were similar to the temperature regime of a natural stream and the elevated temperatures were increased incrementally 3-4 C and 7-8 C. Short-term, 30-day experiments were conducted during five different seasonal periods in 1969 and 1970. Concurrent long-term studies were carried out during the entire experimental period. Relationships between rates of food consumption, growth and food assimilation of the fish were determined for the different experimental temperature conditions during the short-term experiments. Relationships between maintenance ration and temperature were derived from curves relating rates of food consumption and growth. The efficiency of food assimilation was determined from measurements of the quantities of the food consumed and the amounts of fecal wastes produced. Caloric measurements were obtained from oxygen bomb calorimetry of the fish and food consumed, and from wet combustion of the fecal wastes collected during short intervals within each experiment. Bioenergetic measurements were used to estimate the major fates of the energy of food consumed under the different temperature conditions during a period of fluctuating high summer temperatures. Long-term studies were conducted over eight-month and four-month periods under temperature conditions similar to those of the short-term experiments. Growth rates of the juvenile coho salmon were obtained from measurement of changes in their wet weight during 15-day intervals. The growth rates of salmon at equivalent ration levels were compared between the short- and long-term experiments. Growth rates of juvenile coho salmon kept as controls were generally greater than those of fish exposed to elevated temperatures for each of the five short-term experiments. Increases of ration size generally ameliorated the effects of elevated temperatures on the salmon growth rates. Comparisons of the caloric values of coho salmon recorded for a natural rearing stream with those of experimentally fed fish suggest that wild fish subsist on a restricted ration. Results of the long-term studies showed that salmon exposed to naturally fluctuating temperatures in the laboratory and fed restricted rations reached sizes typical of downstream smolts in Oregon coastal streams, whereas the fish exposed to incremental temperature increases of 3-4 C and 7-8 C were respectively 25 and 47 percent smaller than the control fish. Comparison of results of studies based upon naturally fluctuating temperatures with those of other workers based upon constant temperatures indicates that at average temperatures above 20 C the fluctuation of temperature is favorable for coho salmon growth. The results of the study suggest that temperature criteria for juvenile coho salmon derived from measurements based upon constant temperatures may… Advisors/Committee Members: Davis, Gerald E. (advisor).

Subjects/Keywords: Coho salmon

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Everson, L. B. (1973). Growth and food consumption of juvenile coho salmon exposed to natural and elevated fluctuating temperatures. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22345

Chicago Manual of Style (16^th Edition):

Everson, Larry B. “Growth and food consumption of juvenile coho salmon exposed to natural and elevated fluctuating temperatures.” 1973. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22345.

MLA Handbook (7^th Edition):

Everson, Larry B. “Growth and food consumption of juvenile coho salmon exposed to natural and elevated fluctuating temperatures.” 1973. Web. 04 Mar 2021.

Vancouver:

Everson LB. Growth and food consumption of juvenile coho salmon exposed to natural and elevated fluctuating temperatures. [Internet] [Masters thesis]. Oregon State University; 1973. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22345.

Council of Science Editors:

Everson LB. Growth and food consumption of juvenile coho salmon exposed to natural and elevated fluctuating temperatures. [Masters Thesis]. Oregon State University; 1973. Available from: http://hdl.handle.net/1957/22345

Oregon State University

7. Crone, Richard Allan. Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska.

Degree: MS, Fisheries and Wildlife, 1967, Oregon State University

URL: http://hdl.handle.net/1957/22473

► Behavior and survival in fresh water were studied for three brood years of coho salmon in Sashin Creek, Alaska, from October 1963, until September 1966.… (more)

▼ Behavior and survival in fresh water were studied for three brood years of coho salmon in Sashin Creek, Alaska, from October 1963, until September 1966. Investigations of spawning adults were conducted to determine numbers of spawners, distribution on the spawning grounds, effects on pink salmon, age composition, redd life, fecundities, and egg retention. Juvenile coho were studied to determine changes in population size, distribution in the stream, age composition of the population, food habits, and rates of mortality during fresh-water life. The number of coho spawners counted into Sashin Creek each year normally varied from 50 to 300. Weir counts and estimations of the number of spawners determined from observed spawning effort and redd life were not accurate methods of estimating the coho escapement into Sashin Creek. In 1965, a more accurate estimate was obtained by tagging a portion of the run and recording marked to unmarked ratios on the spawning grounds. I estimated that less than two percent of the viable pink salmon embryos were destroyed in 1965 by the spawning activities of coho salmon. Most coho spawners returned to Sashin Creek in 1965 and 1966 in their fourth year of life after having migrated to sea in their third year (designated 4₃). Smaller numbers of 3₂ and 5₄ individuals composed the remainder of the spawning population. The mean redd life of 56 females was 13 days. A small sample of coho from Sashin Creek examined for fecundity in 1966 gave a mean of 2,868 eggs per female. A weir or fyke net was fished in the spring to estimate emigration of juvenile coho. Coho smolts left Sashin Creek from April through July; peak emigration occurred in late May or early June. Coho fry left the stream in the spring and summer in widely varying numbers from year to year. I estimated from growth data, population estimates, and analysis of scale samples that most coho juveniles remained in Sashin Creek for two growing seasons before migrating to sea. Analysis of scales from juvenile coho indicated that some reabsorption of scales occurs during the winter. The possibility of reabsorption of circuli makes back-calculation of the length of younger age-groups of coho from scale measurements unreliable. Diptera were represented more often than any other order of insects in the stomachs of juvenile coho. Hemiptera were important as food items to juvenile coho in a tributary stream. The estimated survival from egg deposition to immediately prior to emergence varied between 17.5 and. 34.9 percent for the three brood years, and averaged 27. 8 percent. Early summer populations of fry were variable in size and dependent on the size of the egg deposition of the brood. Populations of fry declined rapidly during July and early August. Instantaneous mortality rates were much higher for this period than during any other time in the fresh-water life of coho salmon in Sashin Creek. Mortality dropped to a low level during the following winter period. Advisors/Committee Members: Bond, Carl E. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Crone, R. A. (1967). Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22473

Chicago Manual of Style (16^th Edition):

Crone, Richard Allan. “Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska.” 1967. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22473.

MLA Handbook (7^th Edition):

Crone, Richard Allan. “Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska.” 1967. Web. 04 Mar 2021.

Vancouver:

Crone RA. Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska. [Internet] [Masters thesis]. Oregon State University; 1967. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22473.

Council of Science Editors:

Crone RA. Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska. [Masters Thesis]. Oregon State University; 1967. Available from: http://hdl.handle.net/1957/22473

Oregon State University

8. Hjort, Randy Carl. Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California.

Degree: MS, Fisheries and Wildlife, 1979, Oregon State University

URL: http://hdl.handle.net/1957/22189

► Phenotypic similarities of coho salmon (Oncorhynchus kisutch) stocks from Oregon, Washington, and California were compared using agglomerative and divisive cluster analyses. The phenotypic characters evaluated… (more)

▼ Phenotypic similarities of coho salmon (Oncorhynchus kisutch) stocks from Oregon, Washington, and California were compared using agglomerative and divisive cluster analyses. The phenotypic characters evaluated included the following: 1) the isozyme gene frequencies of transferrin and phosphoglucose isomerase; 2) the life history characters time of peak spawning and proportion of females in the population; and 3) the morphological characters scales in the lateral series, scales above the lateral line, anal rays, gill rakers, branchiostegal rays and vertebrae. Coho salmon stocks from similar environments were phenotypically similar. The groups of stocks found to be similar by the agglomerative cluster analysis were: 1) wild stocks from the northern Oregon coast; 2) wild stocks from the southern Oregon coast; 3) stocks from hatcheries using wild coho salmon for an egg source; 4) stocks from large stream systems; and 5) hatchery stocks from the northern Oregon coast. There were three trends involved with the clustering patterns: 1) stocks that are geographically close tend to be phenotypically similar; 2) stocks from large stream systems were more similar to each other than to stocks from smaller stream systems, independent of geographic nearness; and 3) hatchery stocks were more similar to each other than to wild stocks, even those in their respective stream systems, and wild stocks were more similar to each other than to hatchery stocks, even those in their respective stream systems. These trends may be useful to fishery managers for selecting donor stocks from hatcheries for transplanting to stream systems or other hatcheries. Individual phenotypic characters were correlated with characters of the stream systems. Two agglomerative cluster analyses of the characters of the stocks and the characters of the stream system were used to determine whether stream types corresponded to phenotype- types. The clustering patterns of phenotypic characters of the stocks were not similar to the clustering found for characteristics of the stream systems from which the stocks came. Advisors/Committee Members: Schreck, Carl B. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Hjort, R. C. (1979). Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22189

Chicago Manual of Style (16^th Edition):

Hjort, Randy Carl. “Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California.” 1979. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22189.

MLA Handbook (7^th Edition):

Hjort, Randy Carl. “Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California.” 1979. Web. 04 Mar 2021.

Vancouver:

Hjort RC. Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22189.

Council of Science Editors:

Hjort RC. Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/22189

Oregon State University

9. Steil, Deborah L. Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon.

Degree: MS, Fisheries, 1976, Oregon State University

URL: http://hdl.handle.net/1957/13838

► Ninety-six hour acute toxicity bioassays were employed to determine the tolerance of juvenile coho salmon to chlorinated stabilized kraft mill effluent (SKME). In addition the… (more)

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Steil, D. L. (1976). Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13838

Chicago Manual of Style (16^th Edition):

Steil, Deborah L. “Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon.” 1976. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/13838.

MLA Handbook (7^th Edition):

Steil, Deborah L. “Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon.” 1976. Web. 04 Mar 2021.

Vancouver:

Steil DL. Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon. [Internet] [Masters thesis]. Oregon State University; 1976. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/13838.

Council of Science Editors:

Steil DL. Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon. [Masters Thesis]. Oregon State University; 1976. Available from: http://hdl.handle.net/1957/13838

Oregon State University

10. Davis, Gerald E. The influence of dissolved oxygen concentration on the swimming performance of juvenile coho salmon at different temperatures.

Degree: MS, Fish and Game, 1960, Oregon State University

URL: http://hdl.handle.net/1957/21320

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Davis, G. E. (1960). The influence of dissolved oxygen concentration on the swimming performance of juvenile coho salmon at different temperatures. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/21320

Chicago Manual of Style (16^th Edition):

Davis, Gerald E. “The influence of dissolved oxygen concentration on the swimming performance of juvenile coho salmon at different temperatures.” 1960. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/21320.

MLA Handbook (7^th Edition):

Davis, Gerald E. “The influence of dissolved oxygen concentration on the swimming performance of juvenile coho salmon at different temperatures.” 1960. Web. 04 Mar 2021.

Vancouver:

Davis GE. The influence of dissolved oxygen concentration on the swimming performance of juvenile coho salmon at different temperatures. [Internet] [Masters thesis]. Oregon State University; 1960. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/21320.

Council of Science Editors:

Davis GE. The influence of dissolved oxygen concentration on the swimming performance of juvenile coho salmon at different temperatures. [Masters Thesis]. Oregon State University; 1960. Available from: http://hdl.handle.net/1957/21320

Oregon State University

11. Averett, R. C. Influence of temperature on energy and material utilization by juvenile coho salmon.

Degree: PhD, Fisheries and Wildlife, 1968, Oregon State University

URL: http://hdl.handle.net/1957/21648

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Averett, R. C. (1968). Influence of temperature on energy and material utilization by juvenile coho salmon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/21648

Chicago Manual of Style (16^th Edition):

Averett, R C. “Influence of temperature on energy and material utilization by juvenile coho salmon.” 1968. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/21648.

MLA Handbook (7^th Edition):

Averett, R C. “Influence of temperature on energy and material utilization by juvenile coho salmon.” 1968. Web. 04 Mar 2021.

Vancouver:

Averett RC. Influence of temperature on energy and material utilization by juvenile coho salmon. [Internet] [Doctoral dissertation]. Oregon State University; 1968. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/21648.

Council of Science Editors:

Averett RC. Influence of temperature on energy and material utilization by juvenile coho salmon. [Doctoral Dissertation]. Oregon State University; 1968. Available from: http://hdl.handle.net/1957/21648

Oregon State University

12. Jonasson, Brian C. Behavioral response of juvenile coho salmon (Oncorhynchus kisutch) to olfactory cues.

Degree: MS, Fisheries and Wildlife, 1983, Oregon State University

URL: http://hdl.handle.net/1957/22220

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Jonasson, B. C. (1983). Behavioral response of juvenile coho salmon (Oncorhynchus kisutch) to olfactory cues. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22220

Chicago Manual of Style (16^th Edition):

Jonasson, Brian C. “Behavioral response of juvenile coho salmon (Oncorhynchus kisutch) to olfactory cues.” 1983. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22220.

MLA Handbook (7^th Edition):

Jonasson, Brian C. “Behavioral response of juvenile coho salmon (Oncorhynchus kisutch) to olfactory cues.” 1983. Web. 04 Mar 2021.

Vancouver:

Jonasson BC. Behavioral response of juvenile coho salmon (Oncorhynchus kisutch) to olfactory cues. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22220.

Council of Science Editors:

Jonasson BC. Behavioral response of juvenile coho salmon (Oncorhynchus kisutch) to olfactory cues. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/22220

Oregon State University

13. Knight, Ned J. Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams.

Degree: MS, Fisheries and Wildlife, 1979, Oregon State University

URL: http://hdl.handle.net/1957/22335

► Data from the coho salmon migration were examined from three streams of the Alsea Watershed Study, conducted on tributaries to Drift Creek, Oregon, from 1959… (more)

▼ Data from the coho salmon migration were examined from three streams of the Alsea Watershed Study, conducted on tributaries to Drift Creek, Oregon, from 1959 through 1973. With the migration season defined as November 1 through May 31, the mean seasonal smolt count was 2022 fish in Deer Creek, 665 in Flynn Creek, and 277 in Needle Branch. A general decline in numbers in the later years of the study was countered by a significant increase in mean length. The peak migration time was in late March and early April in each stream. A general approach to correlate physical and biological factors to the total seasonal smolt count in each stream through single regression analyses was mostly unsuccessful. A hypothesized positive relationship between summer discharge and smolt yield could not be supported, either by using mean monthly or mean maximum flows. A negative relationship between winter discharge and smolt count was hypothesized, due to increased mortality from higher flows. This hypothesis was supported by significant regressions that included mean January flows and mean highest flows. Summer temperatures (mean monthly and mean maximum for 7, 15, and 30 days) showed little correlation with the smolt output. Suspended sediment concentrations were negatively correlated with the number of smolts, as expected from the close relationship between sediment and streamflow. September biomass of juveniles in Flynn Creek was significantly related to the smolt output, though the relationships were weaker in the other two streams. The number of spawning females was positively related to the resulting smolt count but the correlations were not significant. Cutthroat trout biomass showed very little correlation with the coho smolt output. Combinations of variables in multiple regression analyses proved generally more successful than the single correlations with smolt count, but interpretation of the variables that proved significant was not always clear. For Deer Creek, 63.9% of the variability in smolt yield could be explained by the regression with September biomass and mean May maximum temperatures. September biomass, January discharge, and mean sediment concentration accounted for 80.7% of the variability in Flynn Creek smolt output. Only 53.8% of the variability in Needle Branch smolt count could be adequately explained (from January discharge and timing of the mean lowest discharge for 15 days), perhaps due to changes in stream variables following logging. When total smolt weight (biomass) was used as the dependent variable instead of count, only the Flynn Creek regression was significant (R²=0.888, with September biomass, mean lowest discharge for 15 days, and spawning female count). It is evident from these analyses that the juvenile populations in each stream have different relationships with various physical and biological factors. Other studies have shown strong positive relationships between commercial catch of coho salmon off Oregon and Washington and streamflow two years previously, corresponding to the freshwater… Advisors/Committee Members: Hall, James D. (advisor), Bond, Carl (committee member).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Knight, N. J. (1979). Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22335

Chicago Manual of Style (16^th Edition):

Knight, Ned J. “Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams.” 1979. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22335.

MLA Handbook (7^th Edition):

Knight, Ned J. “Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams.” 1979. Web. 04 Mar 2021.

Vancouver:

Knight NJ. Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22335.

Council of Science Editors:

Knight NJ. Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/22335

Oregon State University

14. Lindsay, Robert Bryan. Distribution and survival of coho salmon fry after emigration from natal streams.

Degree: MS, Fisheries and Wildlife, 1974, Oregon State University

URL: http://hdl.handle.net/1957/22475

► Large numbers of coho salmon (Oncorhynehus kisutch) fry move downstream shortly after emergence from the gravel in many spawning tributaries. In three small coastal streams… (more)

▼ Large numbers of coho salmon (Oncorhynehus kisutch) fry move downstream shortly after emergence from the gravel in many spawning tributaries. In three small coastal streams of Oregon about eight times more juveniles leave the tributaries as newly emerged fry than as smolts one year later. Because these early emigrants comprise such a large proportion of the total out-migration of juvenile coho from these streams, a study was initiated to determine their distribution and survival and to evaluate their contribution, if any, to the spawning escapements. In spring 1972, all emigrating coho fry were marked with ventral finclips as they entered fish traps located near the mouths of the three natal streams. Coho fry were later examined for ventral marks in July and September at 19 sampling stations in downstream areas. Emigrants generally dispersed downstream after being marked, although some upstream movement occurred once they entered-larger tributaries. A few moved as far as 9.7 km downstream from the fish traps. Few, if any, migrated directly to saltwater. The proportion of emigrants in samples of coho fry was highest directly below the fish traps and decreased farther downstream. Emigrant fry were not evenly distributed-in downstream areas. About 7% of the emigrants survived to September. Survival rates of emigrant fry and of fry In downstream areas that had not emigrated from the study streams (residents)were similar from July to September, being 43% and 46%, respectively. The survival of coho that remained above the traps was 78% for the same time period. The evidence suggests emigrants were as competitive as residents in downstream areas, but that environments downstream were more adverse than those farther upstream. Eight adult and jack coho salmon that had been marked as emigrating fry in spring 1969, returned to spawn in the natal streams in 1970-71 and 1971-72. They represented a known return of about 0.1% of the emigrants. Emigrant fry probably contributed to spawning escapements in downstream areas as well, but contributions to these areas could not be directly evaluated. Advisors/Committee Members: Hall, James D. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Lindsay, R. B. (1974). Distribution and survival of coho salmon fry after emigration from natal streams. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22475

Chicago Manual of Style (16^th Edition):

Lindsay, Robert Bryan. “Distribution and survival of coho salmon fry after emigration from natal streams.” 1974. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22475.

MLA Handbook (7^th Edition):

Lindsay, Robert Bryan. “Distribution and survival of coho salmon fry after emigration from natal streams.” 1974. Web. 04 Mar 2021.

Vancouver:

Lindsay RB. Distribution and survival of coho salmon fry after emigration from natal streams. [Internet] [Masters thesis]. Oregon State University; 1974. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22475.

Council of Science Editors:

Lindsay RB. Distribution and survival of coho salmon fry after emigration from natal streams. [Masters Thesis]. Oregon State University; 1974. Available from: http://hdl.handle.net/1957/22475

Oregon State University

15. Rehnberg, Bradley Glenn. Chemoreception in coho salmon (Oncorhynchus kisutch) : aspects of behavior, physiology, and toxicology.

Degree: PhD, Fisheries and Wildlife, 1985, Oregon State University

URL: http://hdl.handle.net/1957/22102

► Detection of L-serine and D,L-alanine by juvenile coho salmon (Oncorhynchus kisutch) was measured in a two-choice Y-trough. Threshold concentration for olfactory detection of L-serine was… (more)

▼ Detection of L-serine and D,L-alanine by juvenile coho salmon (Oncorhynchus kisutch) was measured in a two-choice Y-trough. Threshold concentration for olfactory detection of L-serine was 10-8 M for zero-age parr, 1O-7 M for yearling parr, 10-5 M for smolts in late April-early May, and 10-6 M for smolts in June. Threshold for the detection of D,L-alanine was 10-7 M for yearling parr, 10-6 M for smolts in late April-early May, and 10-5 M for smolts in June. Zero-age fish adapted to either freshwater or seawater were able to detect L-serine at 10-9 M. In vitro olfactory receptor assays and behavioral experiments were used to examine the specificity of L-serine detection by coho salmon. Of the 10 amino acids tested, L-serine, L-alanine and L-threonine were similar in their ability to compete for the serine receptor site. All three of these amino acids as well as L-histidine elicited behavioral avoidance responses in a 2-choice Y-trough. Behavioral cross-adaptation experiments indicated that the detection of L-serine was inhibited by the adapting amino acids L-serine, L-alanine, and glycine but not by L-threonine, L-aspartic acid, or L-histidine. Classical conditioning experiments showed that serine and alanine were not discriminated from each other although either could be discriminated from L-histidine. These results, taken together, indicate that coho salmon perceive L-serine and L-alanine as identical odors. The olfactory detection of L-serine in a 2-choice Y-trough was inhibited by 2 hr exposures to mercury (Hg) or copper (Cu) but not by zinc (Zn). Upstream swimming behavior, however, was depressed by the presence of Zn as well as Hg or Cu. Of these metals, only Hg strongly inhibited the binding of L-serine to its olfactory receptor. The inability to detect L-serine in the presence of Cu did not result from Cu masking the presence of serine. Chemical speciation calculations suggest that serine-metal complexation was not extensive enough to compromise olfactory detection. Thus, the mechanism of action of Cu is unclear whereas Hg appears to act at the level of the olfactory receptor. The ability to detect and avoid L-serine was not inhibited by a continuous exposure to Zn at 100 or 500 ug/L for 21 days. Advisors/Committee Members: Schreck, Carl B. (advisor), Chapman, Gary (committee member).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Rehnberg, B. G. (1985). Chemoreception in coho salmon (Oncorhynchus kisutch) : aspects of behavior, physiology, and toxicology. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/22102

Chicago Manual of Style (16^th Edition):

Rehnberg, Bradley Glenn. “Chemoreception in coho salmon (Oncorhynchus kisutch) : aspects of behavior, physiology, and toxicology.” 1985. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22102.

MLA Handbook (7^th Edition):

Rehnberg, Bradley Glenn. “Chemoreception in coho salmon (Oncorhynchus kisutch) : aspects of behavior, physiology, and toxicology.” 1985. Web. 04 Mar 2021.

Vancouver:

Rehnberg BG. Chemoreception in coho salmon (Oncorhynchus kisutch) : aspects of behavior, physiology, and toxicology. [Internet] [Doctoral dissertation]. Oregon State University; 1985. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22102.

Council of Science Editors:

Rehnberg BG. Chemoreception in coho salmon (Oncorhynchus kisutch) : aspects of behavior, physiology, and toxicology. [Doctoral Dissertation]. Oregon State University; 1985. Available from: http://hdl.handle.net/1957/22102

Oregon State University

16. Iverson, Ronald Albert. Effects of elevated temperature on juvenile Coho salmon and benthic invertebrates in model stream communities.

Degree: PhD, Fisheries and Wildlife, 1971, Oregon State University

URL: http://hdl.handle.net/1957/22222

► Juvenile coho salmon (Oncorhynchus kisutch (Walbaum)) and aquatic invertebrates were subjected to experimentally increased, but naturally fluctuating, temperatures in a model stream channel. Coho of… (more)

▼ Juvenile coho salmon (Oncorhynchus kisutch (Walbaum)) and aquatic invertebrates were subjected to experimentally increased, but naturally fluctuating, temperatures in a model stream channel. Coho of the 1969, 1970, and 1971 year classes were reared in the heated model stream and in an unheated control stream, both located at the Oak Creek laboratory west of Corvallis, Oregon. The average increment of experimental over control temperature was 4.3 C over the entire experimental period of 22 months. Temperatures in the control stream were generally favorable for growth of coho if food organisms were scarce, while temperatures in the heated stream were favorable for growth if food organisms were abundant. Coho of the 1969 year class were reared for one winter as yearlings, and total production of this group was approximately the same in the two streams. Coho of the 1970 year class were reared from small fry to smolts over a one-year period. In this group, total production in the control stream was approximately twice as great as in the heated stream. While population size was nearly the same in the two streams, coho in the control stream grew much more rapidly than in the heated stream. Total production of coho of the 1971 year class, which were reared from the egg stage, was approximately five times as great in the control as in the heated stream when the experiment was terminated in August 1971. The difference in production resulted from larger population size and higher growth rate in the control stream. Production of aquatic stages of insects was approximately twice as great in the control as in the heated stream over the period May 1970-May 1971. This difference between streams was especially marked in mayfly and stonefly nymphs, which were the most abundant insects in both streams, and which appeared to be the major sources of food for coho. The reduced growth rates of coho in the heated as compared to the control stream probably resulted from effects of temperature on the invertebrate food supply as well as from direct effects of temperature on the coho in raising their standard metabolic rates so that energy available for growth was reduced. Winter growth rates of coho in the heated stream were generally higher than in the control, probably as a result of an increase in appetite with increased temperature. Winter growth rates of the 1969 year class were high, probably because young coho fry were available as food. Winter growth rates of coho of the 1970 year class, which had a more natural food supply, were low in both streams. The insect fauna of the Oak Creek area is probably adapted to cool water temperatures, and this adaptation presumably contributed to the reduced insect production in the heated model stream. If heat tolerant species of insects were present in or able to migrate into a stream receiving a heated effluent, the simplication of the invertebrate fauna caused by the thermal pollution might increase the amount of food available to the top carnivore. Such heat-tolerant forms apparently were not… Advisors/Committee Members: Davis, Gerald E. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Iverson, R. A. (1971). Effects of elevated temperature on juvenile Coho salmon and benthic invertebrates in model stream communities. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/22222

Chicago Manual of Style (16^th Edition):

Iverson, Ronald Albert. “Effects of elevated temperature on juvenile Coho salmon and benthic invertebrates in model stream communities.” 1971. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22222.

MLA Handbook (7^th Edition):

Iverson, Ronald Albert. “Effects of elevated temperature on juvenile Coho salmon and benthic invertebrates in model stream communities.” 1971. Web. 04 Mar 2021.

Vancouver:

Iverson RA. Effects of elevated temperature on juvenile Coho salmon and benthic invertebrates in model stream communities. [Internet] [Doctoral dissertation]. Oregon State University; 1971. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22222.

Council of Science Editors:

Iverson RA. Effects of elevated temperature on juvenile Coho salmon and benthic invertebrates in model stream communities. [Doctoral Dissertation]. Oregon State University; 1971. Available from: http://hdl.handle.net/1957/22222

Oregon State University

17. Pring, Cynthia Kay. Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation.

Degree: MS, Fisheries and Wildlife, 1984, Oregon State University

URL: http://hdl.handle.net/1957/22301

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Pring, C. K. (1984). Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22301

Chicago Manual of Style (16^th Edition):

Pring, Cynthia Kay. “Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation.” 1984. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22301.

MLA Handbook (7^th Edition):

Pring, Cynthia Kay. “Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation.” 1984. Web. 04 Mar 2021.

Vancouver:

Pring CK. Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation. [Internet] [Masters thesis]. Oregon State University; 1984. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22301.

Council of Science Editors:

Pring CK. Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation. [Masters Thesis]. Oregon State University; 1984. Available from: http://hdl.handle.net/1957/22301

Oregon State University

18. Cisar, John Ormond. Properties of anti- Aeromonas salmonicida antibodies from juvenile coho salmon (Oncorhynchus kisutch).

Degree: PhD, Microbiology, 1971, Oregon State University

URL: http://hdl.handle.net/1957/46190

► After parenteral immunization with Aeromonas salmonicida cells, the agglutination activity in juvenile coho salmon (Oncorhynchus kisutch) serum was associated with the macroglobulin serum fraction. Antibody… (more)

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Cisar, J. O. (1971). Properties of anti- Aeromonas salmonicida antibodies from juvenile coho salmon (Oncorhynchus kisutch). (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/46190

Chicago Manual of Style (16^th Edition):

Cisar, John Ormond. “Properties of anti- Aeromonas salmonicida antibodies from juvenile coho salmon (Oncorhynchus kisutch).” 1971. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/46190.

MLA Handbook (7^th Edition):

Cisar, John Ormond. “Properties of anti- Aeromonas salmonicida antibodies from juvenile coho salmon (Oncorhynchus kisutch).” 1971. Web. 04 Mar 2021.

Vancouver:

Cisar JO. Properties of anti- Aeromonas salmonicida antibodies from juvenile coho salmon (Oncorhynchus kisutch). [Internet] [Doctoral dissertation]. Oregon State University; 1971. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/46190.

Council of Science Editors:

Cisar JO. Properties of anti- Aeromonas salmonicida antibodies from juvenile coho salmon (Oncorhynchus kisutch). [Doctoral Dissertation]. Oregon State University; 1971. Available from: http://hdl.handle.net/1957/46190

Oregon State University

19. Staley, Kathryn Boyer. Purine deposition in the skin of juvenile coho salmon, Oncorhynchus kisutch.

Degree: MS, Zoology, 1983, Oregon State University

URL: http://hdl.handle.net/1957/41318

► This study was undertaken to quantitatively evaluate the relationship between silvering of the skin of juvenile coho salmon, due to the deposition of the purines… (more)

▼ This study was undertaken to quantitatively evaluate the relationship between silvering of the skin of juvenile coho salmon, due to the deposition of the purines guanine and hypoxanthine, and adaptation to seawater. It was hypothesized that maximum purine deposition occurs at the time these fish normally enter seawater, that the retention of accumulated skin purines is dependent on seawater entry and that the quantity of purines stored in the skin is greatest in fish transferred to seawater at or near the normal migratory period. To test these hypotheses, four groups of fish were transferred to seawater at monthly intervals and sampled for skin purines from February through June. Fish held in freshwater served as controls. Skin purine concentration was determined by enzyme assays. Guanine deposition in the skin of fish held in freshwater until April reached a maximum on April 19. Guanine in all treatment fish declined sharply in mid-May. Guanine in the skin of fish transferred to seawater during the course of the experiments increased again by mid-June; no such increase occurred in fish held in freshwater beyond May 17. Hypoxanthine levels were much lower than guanine levels in all treatment groups and fluctuated only slightly from February through June. Skin guanine and hypoxanthine levels at the end of June were significantly higher in fish transferred to seawater in April and May than in freshwater controls. Coefficients of condition of fish in all treatment groups decreased from February through June, but were significantly lower in fish transferred to seawater in February and March than in freshwater controls at the end of June. Percent mortality of treatment groups transferred to seawater decreased as the time of transfer approached June. A biochemical role for purines during seaward migration and adaptation to seawater is suggested. It is concluded that the physiological changes associated with parr-smolt transformation, seaward migration and seawater entry are interdependent processes and that the deposition or re-utilization of skin purines may play a vital role in their successful completion. Advisors/Committee Members: Ewing, Richard D. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Staley, K. B. (1983). Purine deposition in the skin of juvenile coho salmon, Oncorhynchus kisutch. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/41318

Chicago Manual of Style (16^th Edition):

Staley, Kathryn Boyer. “Purine deposition in the skin of juvenile coho salmon, Oncorhynchus kisutch.” 1983. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/41318.

MLA Handbook (7^th Edition):

Staley, Kathryn Boyer. “Purine deposition in the skin of juvenile coho salmon, Oncorhynchus kisutch.” 1983. Web. 04 Mar 2021.

Vancouver:

Staley KB. Purine deposition in the skin of juvenile coho salmon, Oncorhynchus kisutch. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/41318.

Council of Science Editors:

Staley KB. Purine deposition in the skin of juvenile coho salmon, Oncorhynchus kisutch. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/41318

Oregon State University

20. Specker, Jennifer Lee. Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch.

Degree: PhD, Fisheries and Wildlife, 1980, Oregon State University

URL: http://hdl.handle.net/1957/42353

► Coho salmon smolts (Oncorhynchus kisutch) were transported at low and high densities. (12 and 120 g/L) for short and long periods (4 and 12 h).… (more)

▼ Coho salmon smolts (Oncorhynchus kisutch) were transported at low and high densities. (12 and 120 g/L) for short and long periods (4 and 12 h). Because smolts can be transplanted directly to seawater, half of the fish in each treatment were transported to tanks containing seawater and half to tanks containing freshwater. Plasma corticosteroids and glucose were elevated at unloading in all groups. Corticosteroids were still above the resting levels 24 h later, whereas glucose had returned to basal levels at this time. Potential smoltification indicators such as plasma thyroxin concentration and gill Na-K-ATPase activity were not affected by transportation. Increased corticosteroids were correlated to increased mortality in transported salmon compared to acclimated control fish when subjected to a bioassay of stress severe confinement. It is concluded that transportation induced stress in the fish regardless of hauling regimen, that increased corticosteroids may have potential as indicators of reduced performance capacity, that the greatest stress occurred during loading and the first few hours en route, and that transported coho salmon smolts seem to be equally fit for entry into freshwater or seawater. Hormones of the hypothalamic-pituitary system probably mediate the environmental changes and endogenous rhythms that regulate the timing and physiological alterations of smoltification. Because thyroid hyperactivity is a major endocrine component of smoltification, yearling coho salmon were injected with mammalian prolactin (PRL) and thyrotropin (TSH) to determine their effect on plasma thyroxin concentrations. The response of plasma thyroxin to TSH is similar from January through May in coho salmon, suggesting that the thyroid does not change in sensitivity to TSH. A dose of 0.04 to 0.07 I.U. TSH is the minimum dose sufficient to significantly increase plasma thyroxin concentration. PRL (1 to 9 I.U.) depressed plasma thyroxin levels in coho salmon parr, smolts, and post-smolts. Increased plasma thyroxin and gill Na-K-ATPase levels tentatively are considered indicative of smoltification, migratory readiness, and hence, seawater adaptability. In an experiment to consider a methodology which could be implemented at a culture facility to enhance the survival of ocean-going smolts and perhaps mitigate losses due to stunting, an abnormality of smoltification, coho salmon parr were maintained for 3 wk in water supplemented with sodium or calcium salts. Prolonged residence in sodium - supplemented freshwater increased plasma thyroxin levels and tended to elevate gill Na-K-ATPase activity. In contrast, acute exposure (24 h) to 75% seawater halved plasma thyroxin levels in coho salmon parr. Gradual acclimation to increased ambient salinity may accelerate changes in, or enhance, plasma thyroxin levels and gill Na-K-ATPase activity, and thus potentially improve the growth and survival of outmigrating smolts and reduce losses due to stunting. Plasma corticosteroid levels were determined during smoltification and in response to… Advisors/Committee Members: Schreck, Carl B. (advisor), Moore, Frank L. (committee member).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Specker, J. L. (1980). Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/42353

Chicago Manual of Style (16^th Edition):

Specker, Jennifer Lee. “Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch.” 1980. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/42353.

MLA Handbook (7^th Edition):

Specker, Jennifer Lee. “Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch.” 1980. Web. 04 Mar 2021.

Vancouver:

Specker JL. Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch. [Internet] [Doctoral dissertation]. Oregon State University; 1980. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/42353.

Council of Science Editors:

Specker JL. Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch. [Doctoral Dissertation]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/42353

Oregon State University

21. Sandoval, William A. Odor detection by Coho salmon (Oncorhynchus kisutch) : a laboratory bioassay and genetic basis.

Degree: MS, Fisheries and Wildlife, 1979, Oregon State University

URL: http://hdl.handle.net/1957/42466

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Sandoval, W. A. (1979). Odor detection by Coho salmon (Oncorhynchus kisutch) : a laboratory bioassay and genetic basis. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42466

Chicago Manual of Style (16^th Edition):

Sandoval, William A. “Odor detection by Coho salmon (Oncorhynchus kisutch) : a laboratory bioassay and genetic basis.” 1979. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/42466.

MLA Handbook (7^th Edition):

Sandoval, William A. “Odor detection by Coho salmon (Oncorhynchus kisutch) : a laboratory bioassay and genetic basis.” 1979. Web. 04 Mar 2021.

Vancouver:

Sandoval WA. Odor detection by Coho salmon (Oncorhynchus kisutch) : a laboratory bioassay and genetic basis. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/42466.

Council of Science Editors:

Sandoval WA. Odor detection by Coho salmon (Oncorhynchus kisutch) : a laboratory bioassay and genetic basis. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/42466

Oregon State University

22. Solazzi, M. F. (Mario Frank). Effects of inbreeding Coho salmon (oncorhynchus kisutch).

Degree: MS, Fisheries and Wildlife, 1977, Oregon State University

URL: http://hdl.handle.net/1957/43616

► Effects of inbreeding coho salmon (Oncorhynchus kisutch) on survival during early life history, growth, feed efficiency, and resistance to gas bubble disease were studied. No… (more)

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Solazzi, M. F. (. F. (1977). Effects of inbreeding Coho salmon (oncorhynchus kisutch). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/43616

Chicago Manual of Style (16^th Edition):

Solazzi, M F (Mario Frank). “Effects of inbreeding Coho salmon (oncorhynchus kisutch).” 1977. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/43616.

MLA Handbook (7^th Edition):

Solazzi, M F (Mario Frank). “Effects of inbreeding Coho salmon (oncorhynchus kisutch).” 1977. Web. 04 Mar 2021.

Vancouver:

Solazzi MF(F. Effects of inbreeding Coho salmon (oncorhynchus kisutch). [Internet] [Masters thesis]. Oregon State University; 1977. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/43616.

Council of Science Editors:

Solazzi MF(F. Effects of inbreeding Coho salmon (oncorhynchus kisutch). [Masters Thesis]. Oregon State University; 1977. Available from: http://hdl.handle.net/1957/43616

Oregon State University

23. Scarnecchia, Dennis Leslie. Factors affecting coho salmon production in Oregon.

Degree: MS, Fisheries and Wildlife, 1978, Oregon State University

URL: http://hdl.handle.net/1957/37181

► Eight scale characters of known hatchery and wild coho salmon (Oncorhynchus kisutch) were compared, and a linear discriminant function was used to determine if hatchery… (more)

▼ Eight scale characters of known hatchery and wild coho salmon (Oncorhynchus kisutch) were compared, and a linear discriminant function was used to determine if hatchery and wild adult coho salmon could be correctly identified by their scales. Eighty-two percent of the hatchery and 89% of the wild fish were correctly identified. Based on analysis of scales from adult salmon of unknown origin (hatchery or wild) and the estimated catch of hatchery coho (marked) taken by the Oregon sport fishery, concluded that 74.9% of the fish caught in the ocean from mid-June to mid-September 1977 had been released as smelts from hatcheries. Percentages of hatchery fish in the catch ranged from 85% near the mouth of the Columbia River to 61% at Winchester Bay on the southern Oregon coast. Fisheries on the south and central Oregon coast may have fished on higher percentages of wild coho salmon later in the season, probably because wild fish from coastal streams remained off of these ports while most fish destined for Columbia River hatcheries had already migrated northward. Scales from coho salmon were used to determine if location on the body from which they were taken would affect the values of five scale characters. Scales obtained from within a relatively small area above the lateral line between the dorsal and adipose fins differed widely in total radius, in radius of the freshwater zone, and in number of circuli in the freshwater zone. Scales taken farther above the lateral line had significantly lower values for all five characters observed. I conclude that substantial error can be introduced into interpretation of scale data if care is not taken to insure that scales from each fish come from precisely the same area of the body. A well chosen scrape sample yielded a result as satisfactory as that of a "preferred" or "key" scale. To investigate the relationship between streamflow and abundance of coho salmon, I correlated flow from several Oregon coastal rivers with catch of coho salmon from these rivers and with catch from the Oregon commercial troll fishery. I found a highly significant relationship between total streamflows during the freshwater residency of the fish for five Oregon coastal rivers combined and pounds of adult coho salmon caught by the Oregon commercial troll fishery from 1942 to 1962. There is also a significant relationship between total combined annual (January-December) flows for these rivers and a catch 2 years later. Conversely, I found a poor relationship between the lowest 60 consecutive days of summer flow and 2 two years later. I also found significant relationships between annual flows and catch in Tillamook Bay from 1934 to 1946. Only on the Siletz River from 1927 to 1940 do find a significant relationship between summer flows and catch. Higher flows during the freshwater stages of coho salmon probably provide more habitat and better conditions for growth as well as lessen susceptibility of fry and smelts to predation. I concluded that the relationships… Advisors/Committee Members: Wagner, Harry H. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Scarnecchia, D. L. (1978). Factors affecting coho salmon production in Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/37181

Chicago Manual of Style (16^th Edition):

Scarnecchia, Dennis Leslie. “Factors affecting coho salmon production in Oregon.” 1978. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/37181.

MLA Handbook (7^th Edition):

Scarnecchia, Dennis Leslie. “Factors affecting coho salmon production in Oregon.” 1978. Web. 04 Mar 2021.

Vancouver:

Scarnecchia DL. Factors affecting coho salmon production in Oregon. [Internet] [Masters thesis]. Oregon State University; 1978. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/37181.

Council of Science Editors:

Scarnecchia DL. Factors affecting coho salmon production in Oregon. [Masters Thesis]. Oregon State University; 1978. Available from: http://hdl.handle.net/1957/37181

Oregon State University

24. Kanchanakhan, Somkiat. Hematology and histopathology of Coho salmon (Oncorhynchus kisutch) infected with Flexibacter psychrophilus.

Degree: MS, Microbiology, 1990, Oregon State University

URL: http://hdl.handle.net/1957/37986

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Kanchanakhan, S. (1990). Hematology and histopathology of Coho salmon (Oncorhynchus kisutch) infected with Flexibacter psychrophilus. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/37986

Chicago Manual of Style (16^th Edition):

Kanchanakhan, Somkiat. “Hematology and histopathology of Coho salmon (Oncorhynchus kisutch) infected with Flexibacter psychrophilus.” 1990. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/37986.

MLA Handbook (7^th Edition):

Kanchanakhan, Somkiat. “Hematology and histopathology of Coho salmon (Oncorhynchus kisutch) infected with Flexibacter psychrophilus.” 1990. Web. 04 Mar 2021.

Vancouver:

Kanchanakhan S. Hematology and histopathology of Coho salmon (Oncorhynchus kisutch) infected with Flexibacter psychrophilus. [Internet] [Masters thesis]. Oregon State University; 1990. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/37986.

Council of Science Editors:

Kanchanakhan S. Hematology and histopathology of Coho salmon (Oncorhynchus kisutch) infected with Flexibacter psychrophilus. [Masters Thesis]. Oregon State University; 1990. Available from: http://hdl.handle.net/1957/37986

Oregon State University

25. Thatcher, T. O. Some effects of dissolved oxygen concentration on feeding, growth and bioenergetics of juvenile Coho salmon.

Degree: PhD, Fisheries and Wildlife, 1974, Oregon State University

URL: http://hdl.handle.net/1957/45601

► The effects of three levels of dissolved oxygen (8, 5 and 3 mg/l) upon the feeding, growth and bioenergetics of juvenile coho salmon, Oncorhynchus kisutch… (more)

▼ The effects of three levels of dissolved oxygen (8, 5 and 3 mg/l) upon the feeding, growth and bioenergetics of juvenile coho salmon, Oncorhynchus kisutch (Walbaum), were determined in laboratory studies. Experiments with individual fish were conducted during the summer, fall and spring to measure rates of food consumption, standard metabolism, waste production, activity-specific dynamic action, and growth. House fly larvae were fed to the young salmon and the temperature was kept constant year-round at 15 C. The results indicated that differences due to the dissolved oxygen concentration were not great. Food consumption rate and the slope of growth rate curves were reduced only at 3 mg /I dissolved oxygen and only at near maximum food consumption rates which appear to be higher than juvenile coho salmon generally encounter in nature. However, normal competition for food and space in stream life (not present in these experiments) would be expected to curtail feeding in naturally occurring populations of juvenile cohos exposed to dissolved oxygen levels near 3 mg/l. Energy budgets were constructed from caloric determinations of the various uses made of the energy in the consumed food. These revealed that the reduced slope of the growth curve exhibited by 3 mg/l fish at near maximum feeding levels was due to sharp increases in energy requirements for activity-specific dynamic action. These energy budgets also offered the explanation that the greater loss of weight by the starved juvenile cohos kept at 8 mg /l dissolved oxygen (as compared to those kept at 3 and 5 mg/I) was due to their greater activity. Juvenile cohos kept at 5 mg/l dissolved oxygen in these studies grew at least as well as those at 8 mg /l. Again, however, this was considered to be an artifact of this experimental procedure. Fish reported upon here were not required to expend energy in competition for food and space as are those living in nature. Advisors/Committee Members: Warren, Charles E. (advisor), Phillips, Donald (committee member).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Thatcher, T. O. (1974). Some effects of dissolved oxygen concentration on feeding, growth and bioenergetics of juvenile Coho salmon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/45601

Chicago Manual of Style (16^th Edition):

Thatcher, T O. “Some effects of dissolved oxygen concentration on feeding, growth and bioenergetics of juvenile Coho salmon.” 1974. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/45601.

MLA Handbook (7^th Edition):

Thatcher, T O. “Some effects of dissolved oxygen concentration on feeding, growth and bioenergetics of juvenile Coho salmon.” 1974. Web. 04 Mar 2021.

Vancouver:

Thatcher TO. Some effects of dissolved oxygen concentration on feeding, growth and bioenergetics of juvenile Coho salmon. [Internet] [Doctoral dissertation]. Oregon State University; 1974. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/45601.

Council of Science Editors:

Thatcher TO. Some effects of dissolved oxygen concentration on feeding, growth and bioenergetics of juvenile Coho salmon. [Doctoral Dissertation]. Oregon State University; 1974. Available from: http://hdl.handle.net/1957/45601

Oregon State University

26. Paterson, William Douglas. The antibody response of juvenile coho salmon (Oncorhynchus kisutch) to Aeromonas salmonicida, the causative agent of furunculosis.

Degree: PhD, Microbiology, 1971, Oregon State University

URL: http://hdl.handle.net/1957/45414

► This research was initiated to investigate the effects of various parameters on the immune response of juvenile coho salmon to Aeromonas salmonicida. The antibody response… (more)

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Paterson, W. D. (1971). The antibody response of juvenile coho salmon (Oncorhynchus kisutch) to Aeromonas salmonicida, the causative agent of furunculosis. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/45414

Chicago Manual of Style (16^th Edition):

Paterson, William Douglas. “The antibody response of juvenile coho salmon (Oncorhynchus kisutch) to Aeromonas salmonicida, the causative agent of furunculosis.” 1971. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/45414.

MLA Handbook (7^th Edition):

Paterson, William Douglas. “The antibody response of juvenile coho salmon (Oncorhynchus kisutch) to Aeromonas salmonicida, the causative agent of furunculosis.” 1971. Web. 04 Mar 2021.

Vancouver:

Paterson WD. The antibody response of juvenile coho salmon (Oncorhynchus kisutch) to Aeromonas salmonicida, the causative agent of furunculosis. [Internet] [Doctoral dissertation]. Oregon State University; 1971. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/45414.

Council of Science Editors:

Paterson WD. The antibody response of juvenile coho salmon (Oncorhynchus kisutch) to Aeromonas salmonicida, the causative agent of furunculosis. [Doctoral Dissertation]. Oregon State University; 1971. Available from: http://hdl.handle.net/1957/45414

Oregon State University

27. Patino, Reynaldo. Clearance of plasma cortisol in coho salmon, Oncorhynchus kisutch, at various stages of smoltification.

Degree: MS, Fisheries and Wildlife, 1983, Oregon State University

URL: http://hdl.handle.net/1957/17868

► The metabolic clearance rate (MCR) of plasma radioactivity after a single intracardial injection of ³H-cortisol was elevated during the Spring in yearling coho salmon, Oncorhynchus… (more)

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Patino, R. (1983). Clearance of plasma cortisol in coho salmon, Oncorhynchus kisutch, at various stages of smoltification. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/17868

Chicago Manual of Style (16^th Edition):

Patino, Reynaldo. “Clearance of plasma cortisol in coho salmon, Oncorhynchus kisutch, at various stages of smoltification.” 1983. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/17868.

MLA Handbook (7^th Edition):

Patino, Reynaldo. “Clearance of plasma cortisol in coho salmon, Oncorhynchus kisutch, at various stages of smoltification.” 1983. Web. 04 Mar 2021.

Vancouver:

Patino R. Clearance of plasma cortisol in coho salmon, Oncorhynchus kisutch, at various stages of smoltification. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/17868.

Council of Science Editors:

Patino R. Clearance of plasma cortisol in coho salmon, Oncorhynchus kisutch, at various stages of smoltification. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/17868

Oregon State University

28. Stein, Roy A. Social interaction between juvenile coho and fall chinook salmon in Sixes River, Oregon.

Degree: MS, Fisheries, 1971, Oregon State University

URL: http://hdl.handle.net/1957/17849

► The nature of the interaction between juvenile coho salmon, Oncorhynchus kisutch (Walbaum), and fall chinook salmon, 0. tshawytscha (Walbaum), was studied in Sixes River, Oregon.… (more)

▼ The nature of the interaction between juvenile coho salmon, Oncorhynchus kisutch (Walbaum), and fall chinook salmon, 0. tshawytscha (Walbaum), was studied in Sixes River, Oregon. Seining, snorkeling, and tagging were used to determine distribution and patterns of growth of these two species in the stream environment. Experiments conducted in flowing-water observation troughs that provided volitional residence were designed to examine the outcome of agonistic behavior between these two species. Both species were distributed throughout the entire river system in early spring. During this period, underwater surveys in the main river and selected tributaries indicated that both species preferred the same habitat. As temperatures increased during the late spring, coho disappeared from the main river, but continued to occupy cool tributaries. Fall chinook, on the other hand, were found primarily in the main river until early summer, when they moved to the estuary. Relatively few individuals remained in the tributaries. Experiments conducted in the troughs revealed that agonistic behavior, including nipping, chasing, lateral display, submission, and fleeing, occurred between juvenile coho and fall chinook. When the two species were together in the troughs and in cool tributary streams, coho grew faster than chinook. When isolated in troughs, both grew at similar rates. Coho tolerated fewer individuals per unit area than did chinook, and occupied positions of dominance near the source of incoming food at the upstream end of the troughs. Coho had brighter fin and body colors, greater fin development, deeper bodies, and were heavier than fall chinook of the same length. Coloration and morphology appeared to be important factors influencing the "apparent" size and presumably the social status of both species. Juvenile coho, with extensive development of fins and coloration and intense territorial behavior, are hypothesized to be adapted to small, cool tributary streams. Fall chinook, on the other hand, with conservative development of fins and coloration and related behavior patterns, appear to be adapted to conditions in the main river and estuary. Advisors/Committee Members: Hall, James D. (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Stein, R. A. (1971). Social interaction between juvenile coho and fall chinook salmon in Sixes River, Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/17849

Chicago Manual of Style (16^th Edition):

Stein, Roy A. “Social interaction between juvenile coho and fall chinook salmon in Sixes River, Oregon.” 1971. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/17849.

MLA Handbook (7^th Edition):

Stein, Roy A. “Social interaction between juvenile coho and fall chinook salmon in Sixes River, Oregon.” 1971. Web. 04 Mar 2021.

Vancouver:

Stein RA. Social interaction between juvenile coho and fall chinook salmon in Sixes River, Oregon. [Internet] [Masters thesis]. Oregon State University; 1971. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/17849.

Council of Science Editors:

Stein RA. Social interaction between juvenile coho and fall chinook salmon in Sixes River, Oregon. [Masters Thesis]. Oregon State University; 1971. Available from: http://hdl.handle.net/1957/17849

Oregon State University

29. Carline, Robert F. Laboratory studies on the food consumption, growth, and activity of juvenile coho salmon.

Degree: MS, Fisheries and Wildlife, 1967, Oregon State University

URL: http://hdl.handle.net/1957/22759

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Carline, R. F. (1967). Laboratory studies on the food consumption, growth, and activity of juvenile coho salmon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22759

Chicago Manual of Style (16^th Edition):

Carline, Robert F. “Laboratory studies on the food consumption, growth, and activity of juvenile coho salmon.” 1967. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22759.

MLA Handbook (7^th Edition):

Carline, Robert F. “Laboratory studies on the food consumption, growth, and activity of juvenile coho salmon.” 1967. Web. 04 Mar 2021.

Vancouver:

Carline RF. Laboratory studies on the food consumption, growth, and activity of juvenile coho salmon. [Internet] [Masters thesis]. Oregon State University; 1967. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22759.

Council of Science Editors:

Carline RF. Laboratory studies on the food consumption, growth, and activity of juvenile coho salmon. [Masters Thesis]. Oregon State University; 1967. Available from: http://hdl.handle.net/1957/22759

Oregon State University

30. Au, David Wah Kwai. Population dynamics of the coho salmon and its response to logging in three coastal streams.

Degree: PhD, Fisheries and Wildlife, 1971, Oregon State University

URL: http://hdl.handle.net/1957/22321

► This study examines the ecology and dynamics of coho salmon (Oncorhynchus kisutch) in environments experimentally altered by logging. The objective was to evaluate processes that… (more)

▼ This study examines the ecology and dynamics of coho salmon (Oncorhynchus kisutch) in environments experimentally altered by logging. The objective was to evaluate processes that stabilize or regulate the populations. Two small watersheds in Oregon's Coast Range were logged in 1966, one clear-cut, the other patch-cut. A third adjacent watershed was left uncut as a control. The influence of these treatments on the biology of the coho was assessed. Attention was concentrated on populations of the six year classes 1963 to 1968. The natural variability of streamflow-related conditions influencing both the magnitude and pattern of coho recruitment each year was increased in the logged watersheds. Peak flow during storms increased; intragravel dissolved oxygen levels decreased in the stream draining the clear-cut watershed. These changes, however, were apparently within the range of variation that the coho naturally experience. Increased stream temperatures and mortalities, due to the logging effects, altered the post-recruitment life conditions of the coho in that stream but did not significantly affect the final smolt yield. The nocturnal behavior of recently emerged fry leads to recruitment along the stream length. Fry tend to emerge en masse from the redds at night, and large numbers proceed immediately to disperse downstream. This migration continues for several successive nights, beginning each night soon after dark. Evidence is presented indicating that fry emigration is primarily a dispersal mechanism that distributes fry from redd sites to nursery areas. It is hypothesized that the series of events leading from fry dispersal to be quiescent behavior at night, characteristic of resident fry, is a developmental sequence involving the physiology and maturity of the fry, modified by agonistic activity. Adjustments in coho population size were largely accomplished by fall, resulting in stable and characteristic population levels in each stream. A stable smolt yield was a further result. These adjustments are accomplished through high mortality during the months of the first spring and summer. This mortality is likely density dependent and related to the territorial and agonistic behavior of the fish. Growth, biomass, and net production varied greatly during each year. Seasonal changes in growth rate resulted in seasonal variations in biomass that were in contrast to the stabilized trends of population number. The pattern of net production rate was also largely determined by the seasonal growth pattern, and like biomass, did not show: a tendency to stabilize with time. It averaged 5 g/m² among the three streams for the period June 1 to April 15. The coho populations seem naturally regulated most importantly with respect to number. The patterns of biomass and rate of net production may be understood as an interaction of seasonally variable growth rate with stabilizing population numbers. This study has shown that coho streams normally produce characteristic levels of smolt yield in spite of large natural variations in… Advisors/Committee Members: Hall, James (advisor).

Subjects/Keywords: Coho salmon

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APA (6^th Edition):

Au, D. W. K. (1971). Population dynamics of the coho salmon and its response to logging in three coastal streams. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/22321

Chicago Manual of Style (16^th Edition):

Au, David Wah Kwai. “Population dynamics of the coho salmon and its response to logging in three coastal streams.” 1971. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/22321.

MLA Handbook (7^th Edition):

Au, David Wah Kwai. “Population dynamics of the coho salmon and its response to logging in three coastal streams.” 1971. Web. 04 Mar 2021.

Vancouver:

Au DWK. Population dynamics of the coho salmon and its response to logging in three coastal streams. [Internet] [Doctoral dissertation]. Oregon State University; 1971. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/22321.

Council of Science Editors:

Au DWK. Population dynamics of the coho salmon and its response to logging in three coastal streams. [Doctoral Dissertation]. Oregon State University; 1971. Available from: http://hdl.handle.net/1957/22321

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