subject:(critical swimming speed)

University of Georgia

1. Nguyen, Hoa Phong Luu. Effects of pectoral fin ray removal on white sturgeon (Acipenser transmontanus) and Siberian sturgeon (Acipenser baerii) swimming performance.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/29966

► The effects of two pectoral fin ray sampling methods on swimming performance were evaluated for hatchery-reared white sturgeon and Siberian sturgeon. Fish were subjected to… (more)

Subjects/Keywords: Fin ray removal; Swimming performance; Survival and growth; White sturgeon; Siberian sturgeon; Critical swimming speed

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Nguyen, H. P. L. (2014). Effects of pectoral fin ray removal on white sturgeon (Acipenser transmontanus) and Siberian sturgeon (Acipenser baerii) swimming performance. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/29966

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nguyen, Hoa Phong Luu. “Effects of pectoral fin ray removal on white sturgeon (Acipenser transmontanus) and Siberian sturgeon (Acipenser baerii) swimming performance.” 2014. Thesis, University of Georgia. Accessed April 13, 2021. http://hdl.handle.net/10724/29966.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nguyen, Hoa Phong Luu. “Effects of pectoral fin ray removal on white sturgeon (Acipenser transmontanus) and Siberian sturgeon (Acipenser baerii) swimming performance.” 2014. Web. 13 Apr 2021.

Vancouver:

Nguyen HPL. Effects of pectoral fin ray removal on white sturgeon (Acipenser transmontanus) and Siberian sturgeon (Acipenser baerii) swimming performance. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10724/29966.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nguyen HPL. Effects of pectoral fin ray removal on white sturgeon (Acipenser transmontanus) and Siberian sturgeon (Acipenser baerii) swimming performance. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/29966

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Anderson, Dustin D. The Combined Effects Of Copper Sulfate And Hypoxia Stress On The Swim Performance Of Bluegill Sunfish (lepomis Macrochirus).

Degree: MS, Biology, 2014, University of North Dakota

URL: https://commons.und.edu/theses/1615

► Copper (Cu) is a component of several aquatic pesticides often used to target noxious algae, but at high concentrations may elicit toxic effects on… (more)

▼ Copper (Cu) is a component of several aquatic pesticides often used to target noxious algae, but at high concentrations may elicit toxic effects on non-target organisms such as fish. The severity of Cu toxicity varies widely by fish species, Cu concentration, duration of exposure, and water quality. Hypoxia is a widely occurring aquatic stressor that is also a potential side effect of Cu application due to increased oxygen demand from algae decay. Because Cu and hypoxia stress may occur in concert, it is important to understand and quantify their combined effects. Critical swimming speed (Ucrit) tests are an efficient and non-lethal means of quantifying the acute effects of environmental stressors on a fish's metabolic scope for activity or available energy. The change in swimming speed (Delta Ucrit) as opposed to raw Ucrit of bluegill sunfish (Lepomis macrochirus) was measured in response to Cu and hypoxia stress in an attempt to remove variation in individual swimming ability. Using a variable speed swim chamber, Delta Ucrit was measured in a 2x3x2 factorial design with Cu concentration (0 and 1 mg Cu/L), duration of Cu exposure (24, 48, and 96 hrs) and dissolved oxygen (DO) concentration (>8 (saturated) and 2 mg O2/L (low)) as fixed factors. Hematocrit and gill sections were also analyzed. A significant, non-additive interaction between [Cu] and [DO] was observed. Duration of Cu exposure did not appear to be a substantial factor. At saturated DO, Delta Ucrit was significantly greater in bluegill exposed to 1mg Cu/L. At low DO, Delta Ucrit was significantly lower in bluegill exposed to 1mg Cu/L. Gill damage and increased hematocrit with exposure to Cu and hypoxia were also observed. Gill damage likely increased gill permeability that may have resulted in ion efflux, causing hemoconcentration by plasma water displacement ultimately resulting in increased cardiac stress. Increased Delta Ucrit at saturated DO may have been due to an antibiotic or limiting nutrient effect coupled with decreased ion efflux via decreased lamellar perfusion. Substantially more variation was left unexplained (31.7% vs. 79.1%) by measuring Delta Ucrit rather than raw Ucrit which resulted in greater statistical resolution. Advisors/Committee Members: Steve Kelsch.

Subjects/Keywords: Bluegill; Copper Sulfate; Critical Swimming Speed; Hypoxia; Lepomis macrochirus; Swim Performance

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Anderson, D. D. (2014). The Combined Effects Of Copper Sulfate And Hypoxia Stress On The Swim Performance Of Bluegill Sunfish (lepomis Macrochirus). (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/1615

Chicago Manual of Style (16^th Edition):

Anderson, Dustin D. “The Combined Effects Of Copper Sulfate And Hypoxia Stress On The Swim Performance Of Bluegill Sunfish (lepomis Macrochirus).” 2014. Masters Thesis, University of North Dakota. Accessed April 13, 2021. https://commons.und.edu/theses/1615.

MLA Handbook (7^th Edition):

Anderson, Dustin D. “The Combined Effects Of Copper Sulfate And Hypoxia Stress On The Swim Performance Of Bluegill Sunfish (lepomis Macrochirus).” 2014. Web. 13 Apr 2021.

Vancouver:

Anderson DD. The Combined Effects Of Copper Sulfate And Hypoxia Stress On The Swim Performance Of Bluegill Sunfish (lepomis Macrochirus). [Internet] [Masters thesis]. University of North Dakota; 2014. [cited 2021 Apr 13]. Available from: https://commons.und.edu/theses/1615.

Council of Science Editors:

Anderson DD. The Combined Effects Of Copper Sulfate And Hypoxia Stress On The Swim Performance Of Bluegill Sunfish (lepomis Macrochirus). [Masters Thesis]. University of North Dakota; 2014. Available from: https://commons.und.edu/theses/1615

University of Saskatchewan

3. Goertzen, Meghan Minetta. Swimming performance and energy homeostatic effects of uranium mill effluent exposure in small-bodied fish.

Degree: 2011, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-05252011-131320

► Previous studies at the Key Lake uranium mill (Saskatchewan, Canada) suggested the complex effluent discharged alters energetic stores of resident fish species. A second study… (more)

▼ Previous studies at the Key Lake uranium mill (Saskatchewan, Canada) suggested the complex effluent discharged alters energetic stores of resident fish species. A second study at the same site demonstrated certain fish from lakes downstream of the mill produce larvae with elevated incidence of developmental deformities. The mechanisms by which energy homeostasis is affected in fish downstream of the Key Lake uranium mill are unknown, and the effects of deformities and altered metabolism on swimming ability have not been explored. Therefore, the overall objective of this thesis was to investigate whether effluent exposed fish exhibited differences in swimming performance and energy homeostasis. To achieve this objective two experiments were conducted. In the first experiment juvenile spottail shiner (Notropis hudsonius) were collected from a lake downstream of the Key Lake uranium mill, and compared to fish collected from a nearby reference lake. In the second experiment larvae were collected from laboratory raised fathead minnow (Pimephales promelas) exposed to 5% diluted uranium mill effluent or control (dechlorinated municipal) water, and reared in the same treatments to 60 days post hatch (dph). No gross deformities were observed in any fish, and only shiner collected from the exposure lake in the field experiment had enlarged heart ventricles relative to body size compared to fish from the reference lake. Swimming performance was similar between shiner from the exposure and reference lakes in the field study, but effluent exposure impaired swimming ability in 60 dph fathead minnow in the laboratory experiment compared to fish from the control water treatment. After swimming performance tests fish were considered fatigued and metabolic endpoints were compared to non-fatigued fish. In both non-fatigued and fatigued shiner, liver glycogen was significantly greater in fish collected from the exposure lake compared to the reference lake. There was no difference in liver triglycerides in non-fatigued shiner between lakes, but liver triglycerides decreased after swimming in the field study reference fish. Muscle energy stores were unaffected by site or swimming in the field experiment. Conversely, whole body triglycerides and glycogen were similar between treatments in non-fatigued fathead minnow in the laboratory experiment. Swimming significantly decreased whole body triglycerides in fathead minnow from both treatments, but whole body glycogen was unaffected. In the field experiment blood endpoints (hematocrit, plasma glucose, lactate) in fatigued and non-fatigued shiner from both lakes further supported the possibility of altered intermediary metabolism or blunted stress response in fish downstream of the Key Lake uranium mill. In the field study, shiner muscle citrate synthase activity (an indicator of tissue aerobic capacity) was similar between lakes, but muscle â–hydroxyacyl coenzyme A dehydrogenase activity (an indicator of tissue lipolytic capacity) was elevated. In contrast, laboratory fathead minnow whole… Advisors/Committee Members: Weber, Lynn P., Janz, David M., Niyogi, Som, Pietrock, Michael, Pollock, Michael S..

Subjects/Keywords: stress response; critical swimming speed; metabolism; fathead minnow; spottail shiner; metal mining; uranium

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Goertzen, M. M. (2011). Swimming performance and energy homeostatic effects of uranium mill effluent exposure in small-bodied fish. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-05252011-131320

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Goertzen, Meghan Minetta. “Swimming performance and energy homeostatic effects of uranium mill effluent exposure in small-bodied fish.” 2011. Thesis, University of Saskatchewan. Accessed April 13, 2021. http://hdl.handle.net/10388/etd-05252011-131320.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Goertzen, Meghan Minetta. “Swimming performance and energy homeostatic effects of uranium mill effluent exposure in small-bodied fish.” 2011. Web. 13 Apr 2021.

Vancouver:

Goertzen MM. Swimming performance and energy homeostatic effects of uranium mill effluent exposure in small-bodied fish. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10388/etd-05252011-131320.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Goertzen MM. Swimming performance and energy homeostatic effects of uranium mill effluent exposure in small-bodied fish. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/etd-05252011-131320

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

4. Branca, Ricardo Xavier Mexia. Capacidade natatória e ecomorfologia de três espécies de bogas (Pseudochondrostoma polylepis, Pseudochondrostoma duriense, Pseudochondrostoma willkommii) em rios portugueses.

Degree: 2015, Universidade de Évora

URL: https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/13355

► Neste estudo determinou-se a velocidade crítica de natação (Ucrit), uma medida da capacidade natatória utilizada para espécies piscícolas, da Boga do Norte Pseudochondrostoma duriense (Coelho,… (more)

▼ Neste estudo determinou-se a velocidade crítica de natação (Ucrit), uma medida da capacidade natatória utilizada para espécies piscícolas, da Boga do Norte Pseudochondrostoma duriense (Coelho, 1985), Boga-comum Pseudochondrostoma polylepis (Steindachner 1864), e Boga do Guadiana Pseudochondrostoma willkommii (Steindachner 1866). As Ucrit foram relacionadas com a morfologia dos peixes e com as distintas características hidromorfológicas das três bacias hidrográficas de onde são originários os animais. A hipótese de trabalho pressupõe que rios com características hidromorfológicas distintas vão contribuir para a diferenciação morfológica e comportamental das espécies. As bogas-comuns foram as que apresentaram a Ucrit mais baixa (0,47 ± 0,06 m/s), enquanto as bogas do Norte (0,55 ± 0,09 m/s) e do Guadiana (0,54 ± 0,07 m/s) apresentaram uma Ucrit semelhante. Foram identificadas características morfológicas distintivas entre as espécies analisadas, com as bogas do Norte a apresentarem um corpo mais robusto e barbatanas maiores que os peixes das restantes duas espécies; Abstract: In this study, the critical swimming speed (Ucrit), a measure used to assess the swimming performance of fish, was determined for the northern straight-mouth nase Pseudochondrostoma duriense (Coelho, 1985), for the Iberian nase Pseudochondrostoma polylepis (Steindachner 1864), and for the Guadiana nase Pseudochondrostoma willkommii (Steindachner 1866). The Ucrit data obtained were related with the species morphology and also with the hydromorphological characteristics of their provenance rivers. This work hypothesis proposes that rivers with distinct hydromorphological characteristics would contribute to the morphological differentiation and behavioral adaptation of phylogeneticaly closely related species. The Iberian nase presents a low value of Ucrit (0,47 ± 0,06 m/s) while the northern straight-mouth (0,55 ± 0,09 m/s) and the Guadiana nase (0,54 ± 0,07 m/s) presents similar Ucrit values. Distinct morphological characteristics were identified between the analyzed species, namely the northern straight-mouth nase shows a more robust body and bigger fins than the other two species. Advisors/Committee Members: Almeida, Pedro Raposo de, Quintella, Bernardo.

Subjects/Keywords: Velocidade crítica de natação; Morfologia; Ciprinídeos; Migração; Critical swimming speed; Morphology; Cyprinids; Migration

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Branca, R. X. M. (2015). Capacidade natatória e ecomorfologia de três espécies de bogas (Pseudochondrostoma polylepis, Pseudochondrostoma duriense, Pseudochondrostoma willkommii) em rios portugueses. (Thesis). Universidade de Évora. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/13355

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Branca, Ricardo Xavier Mexia. “Capacidade natatória e ecomorfologia de três espécies de bogas (Pseudochondrostoma polylepis, Pseudochondrostoma duriense, Pseudochondrostoma willkommii) em rios portugueses.” 2015. Thesis, Universidade de Évora. Accessed April 13, 2021. https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/13355.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Branca, Ricardo Xavier Mexia. “Capacidade natatória e ecomorfologia de três espécies de bogas (Pseudochondrostoma polylepis, Pseudochondrostoma duriense, Pseudochondrostoma willkommii) em rios portugueses.” 2015. Web. 13 Apr 2021.

Vancouver:

Branca RXM. Capacidade natatória e ecomorfologia de três espécies de bogas (Pseudochondrostoma polylepis, Pseudochondrostoma duriense, Pseudochondrostoma willkommii) em rios portugueses. [Internet] [Thesis]. Universidade de Évora; 2015. [cited 2021 Apr 13]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/13355.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Branca RXM. Capacidade natatória e ecomorfologia de três espécies de bogas (Pseudochondrostoma polylepis, Pseudochondrostoma duriense, Pseudochondrostoma willkommii) em rios portugueses. [Thesis]. Universidade de Évora; 2015. Available from: https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/13355

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

San Jose State University

5. Perlman, Benjamin Michael. Interspecific Variation In Morphology And Swimming Performance Within Surfperches (Embiotocidae) From California.

Degree: MS, Moss Landing Marine Laboratories, 2010, San Jose State University

URL: https://doi.org/10.31979/etd.enek-gdd6 ; https://scholarworks.sjsu.edu/etd_theses/3825

► Surfperches are marine fishes that occupy nearshore habitats along the California coast. Morphology was analyzed to determine if there were differences among 19 preserved… (more)

Subjects/Keywords: critical swimming speed; C-start escape response; morphology; surfperches

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Perlman, B. M. (2010). Interspecific Variation In Morphology And Swimming Performance Within Surfperches (Embiotocidae) From California. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.enek-gdd6 ; https://scholarworks.sjsu.edu/etd_theses/3825

Chicago Manual of Style (16^th Edition):

Perlman, Benjamin Michael. “Interspecific Variation In Morphology And Swimming Performance Within Surfperches (Embiotocidae) From California.” 2010. Masters Thesis, San Jose State University. Accessed April 13, 2021. https://doi.org/10.31979/etd.enek-gdd6 ; https://scholarworks.sjsu.edu/etd_theses/3825.

MLA Handbook (7^th Edition):

Perlman, Benjamin Michael. “Interspecific Variation In Morphology And Swimming Performance Within Surfperches (Embiotocidae) From California.” 2010. Web. 13 Apr 2021.

Vancouver:

Perlman BM. Interspecific Variation In Morphology And Swimming Performance Within Surfperches (Embiotocidae) From California. [Internet] [Masters thesis]. San Jose State University; 2010. [cited 2021 Apr 13]. Available from: https://doi.org/10.31979/etd.enek-gdd6 ; https://scholarworks.sjsu.edu/etd_theses/3825.

Council of Science Editors:

Perlman BM. Interspecific Variation In Morphology And Swimming Performance Within Surfperches (Embiotocidae) From California. [Masters Thesis]. San Jose State University; 2010. Available from: https://doi.org/10.31979/etd.enek-gdd6 ; https://scholarworks.sjsu.edu/etd_theses/3825

University of Saskatchewan

6. Marit, Jordan Scott. Swim performance as an effective, environmentally relevant measure of sublethal toxicity in zebrafish (Danio rerio).

Degree: 2010, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-11082010-181618

► Examination of the swimming capabilities of fish is increasingly being considered as an effective method for determining sublethal toxicity. Acute toxicant exposure is known to… (more)

▼ Examination of the swimming capabilities of fish is increasingly being considered as an effective method for determining sublethal toxicity. Acute toxicant exposure is known to cause decreases in swim performance in fish but less is known about how developmental exposure can cause persistent effects that hinder swimming. In addition, little is known about how triglyceride levels fluctuate during fish swimming upon both acute and developmental exposure to toxicant. In this thesis, two studies, one acute and one developmental, were carried out using two different toxicants in order to address these issues. In order to examine acute effects, adult zebrafish (Danio rerio) were exposed to ethanol vehicle or increasing concentrations of 2,4-dinitrophenol (DNP), a mitochondrial electron transport chain uncoupler, for a 24 h period. Following exposure, fish were placed in a swim tunnel for critical swimming speed (Ucrit) determination and swim motion analysis. Whole body triglyceride levels were then determined. Ucrit was decreased in a concentration dependent manner in both the 6 mg/L and 12 mg/L DNP exposure groups, with 6 mg/L DNP being considered sublethal and 12 mg/L approaching the LC50. A decrease in tail beat frequency was observed and is likely the main cause for the decrease in Ucrit in the DNP exposure groups. Triglyceride levels were elevated in a concentration dependent manner in the DNP exposure groups. This increase in triglyceride stores may be due to a behavioral adaption limiting swimming capabilities or due to a direct toxic action of DNP on lipid catabolism. The second study examined whether developmental 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposure would cause persistent toxic effects. Zebrafish embryos were exposed to dimethyl sulfoxide control or increasing concentrations of TCDD between 2-4 days post fertilization (dpf). At 5 dpf, cytochrome P450 1A (CYP1A) activity was determined. Fish were raised to 90 dpf with mortalities and deformities being recorded at 5 dpf, 10 dpf, and 90 dpf. At 90 dpf, fish were placed in swim tunnel and Ucrit , swimming motion, and aerobic scope (oxygen consumption rate during exercise minus oxygen consumption rate during rest) were determined. Following swimming, some fish were used for whole body triglyceride analysis while others were used for histological examination. Ucrit was shown to be decreased in the two highest sublethal TCDD exposure groups (0.1 and 1 ng/L) but not in the lowest TCDD exposure group (0.01 ng/L). The exact cause of the decrease in Ucrit is not known, but may be linked to the observed decrease in dorsal aorta diameter, an inability to mobilize triglyceride stores, behavioral adaptations limiting swimming, decreased body length, or a combination of these factors. This TCDD related defect in swimming ability is not due to any increases in gross deformity or mortality rates, nor does it appear that CYP1A induction is required to mediate the toxic effects. Thus, it appears that examination of swim performance may serve as an effective measure… Advisors/Committee Members: Weber, Lynn, Jones, Paul, Muir, Gillian, Niyogi, Som.

Subjects/Keywords: zebrafish; dioxin; triglycerides; dinitrophenol; sublethal toxicity; critical swimming speed

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Marit, J. S. (2010). Swim performance as an effective, environmentally relevant measure of sublethal toxicity in zebrafish (Danio rerio). (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-11082010-181618

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Marit, Jordan Scott. “Swim performance as an effective, environmentally relevant measure of sublethal toxicity in zebrafish (Danio rerio).” 2010. Thesis, University of Saskatchewan. Accessed April 13, 2021. http://hdl.handle.net/10388/etd-11082010-181618.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Marit, Jordan Scott. “Swim performance as an effective, environmentally relevant measure of sublethal toxicity in zebrafish (Danio rerio).” 2010. Web. 13 Apr 2021.

Vancouver:

Marit JS. Swim performance as an effective, environmentally relevant measure of sublethal toxicity in zebrafish (Danio rerio). [Internet] [Thesis]. University of Saskatchewan; 2010. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10388/etd-11082010-181618.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Marit JS. Swim performance as an effective, environmentally relevant measure of sublethal toxicity in zebrafish (Danio rerio). [Thesis]. University of Saskatchewan; 2010. Available from: http://hdl.handle.net/10388/etd-11082010-181618

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Silva, Sara Sofia Rego da. Variabilidade espacial e temporal da capacidade natatória de um ciprinídeo ibérico, o ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005).

Degree: 2017, Universidade de Évora

URL: https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/21807

► Este estudo pretendeu estudar a variabilidade espacial e temporal da capacidade natatória de uma espécie ciprinícola residente, o ruivaco (Achondrostoma oligolepis). Foram testadas duas hipóteses:… (more)

▼ Este estudo pretendeu estudar a variabilidade espacial e temporal da capacidade natatória de uma espécie ciprinícola residente, o ruivaco (Achondrostoma oligolepis). Foram testadas duas hipóteses: a existência de diferenças de velocidade crítica de natação (Ucrit) entre quatro populações de ruivacos e, a respetiva ecomorfologia; a existência de diferenças de Ucrit entre as quatro estações do ano, dentro da mesma população, com posterior análise do seu comportamento natatório. Os resultados demonstraram a inexistência de diferenças espaciais significativas de Ucrit entre as populações. Porém, em termos de forma do corpo identificou-se algumas diferenças que evidenciam ser insuficientes para promover capacidades natatórias distintas. Relativamente ao segundo objetivo, os ruivacos demonstraram uma maior capacidade natatória e um comportamento mais propício ao movimento durante os períodos de outono/inverno. Este trabalho permite inferir sobre a capacidade natatória e a dinâmica de movimentos deste tipo de espécies e, potenciar medidas para a sua conservação e reabilitação in-situ; Spatial and temporal variability of the swimming capacity of an Iberian cyprinid, the ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005) Abstract: This study aimed to study the spatial and temporal variability of the swimming capacity of a resident cyprinid species, the ruivaco (Achondrostoma oligolepis). Two hypotheses were tested: the existence of differences in critical velocity swimming (Ucrit) between four populations of ruivacos and, its ecomorpholgy; and, the existence of differences in Ucrit between the four seasons, within the same population, with subsequent analysis of their swimming behaviour. Results showed the absence of special significant differences in Ucrit between the populations. However, in terms of body shape was identified some differences, but that evidence is insufficient to promote distinct swimming capacities. Relatively to the second purpose, ruivacos showed the higher swimming capacity and the best behaviour to locomotion during the seasons of autumn/winter. This work allows to infer about swimming capacity and dynamics of movement this type of species and, enhancing measures for their conservation and in-situ rehabilitation. Advisors/Committee Members: Alexandre, Carlos.

Subjects/Keywords: Velocidade crítica de natação; Ecomorfologia; Ruivaco; Espécies residentes; Rios mediterrânicos; Critical swimming speed; Eco-morphology; Ruivaco; Resident species; Mediterranean rivers

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Silva, S. S. R. d. (2017). Variabilidade espacial e temporal da capacidade natatória de um ciprinídeo ibérico, o ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005). (Thesis). Universidade de Évora. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/21807

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Silva, Sara Sofia Rego da. “Variabilidade espacial e temporal da capacidade natatória de um ciprinídeo ibérico, o ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005).” 2017. Thesis, Universidade de Évora. Accessed April 13, 2021. https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/21807.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Silva, Sara Sofia Rego da. “Variabilidade espacial e temporal da capacidade natatória de um ciprinídeo ibérico, o ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005).” 2017. Web. 13 Apr 2021.

Vancouver:

Silva SSRd. Variabilidade espacial e temporal da capacidade natatória de um ciprinídeo ibérico, o ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005). [Internet] [Thesis]. Universidade de Évora; 2017. [cited 2021 Apr 13]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/21807.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Silva SSRd. Variabilidade espacial e temporal da capacidade natatória de um ciprinídeo ibérico, o ruivaco, Achondrostoma oligolepis (Robalo, Doadrio, Almada & Kottelat, 2005). [Thesis]. Universidade de Évora; 2017. Available from: https://www.rcaap.pt/detail.jsp?id=oai:dspace.uevora.pt:10174/21807

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

8. Ulrich, Christine. Comparative hypoxia responses and oxygen sensing in galaxiid fishes .

Degree: 2017, University of Waikato

URL: http://hdl.handle.net/10289/11575

► Aquatic ecosystems are inherently characterised by limited oxygen availability and fluctuations in dissolved oxygen concentration, and therefore, environmental hypoxia (i.e. low oxygen conditions) is common.… (more)

▼ Aquatic ecosystems are inherently characterised by limited oxygen availability and fluctuations in dissolved oxygen concentration, and therefore, environmental hypoxia (i.e. low oxygen conditions) is common. However, in recent decades, the frequency and global expansion of hypoxic environments have increased significantly, owing to intensified anthropogenic impacts on the natural environment. Fish depend on environmental oxygen for oxidative metabolism. In the absence of oxygen, alternative anaerobic mechanisms are in place to maintain energy metabolism. Efficiency and productivity of anaerobic metabolism are, however, comparatively low and may become rapidly insufficient in light of high physiological and metabolic oxygen demand. Correspondingly, substrates used in the oxygen-independent metabolism often are limited, and are converted into metabolites detrimental for the organism. When anaerobic mechanisms fail to meet the energy demand and lethal levels of anaerobic by-products have accumulated, hypoxic death is initiated. In this context, a variety of adaptive hypoxia-response strategies and hypoxia-sensitivities are established in fish, in dependence on species-specific oxygen demand and life strategies, thereby potentially creating very specific environmental niches occupied by distinct species. Accordingly, fish may demonstrate distinct habitat requirements and preferences in relation to the oxygen environment, potentially reflecting species-specific hypoxia sensitivities and response capacities, that may ultimately initiate adaptive radiation. In this context, a range of studies has been undertaken previously in a variety of species, however these are difficult to evaluate in a comparative context due to pronounced taxonomic differences between study species. New Zealand’s galaxiids, however, include species which occupy a wide range of environments. They are closely related and may demonstrate adaptive radiation to particular environments. The three related galaxiid species inanga (Galaxias maculatus), banded kokopu (Galaxias fasciatus) and black mudfish (Neochanna diversus) demonstrate minimised phylogenetic distances, yet exhibit specialised habitat requirements with distinctly different oxygen environments. Thus, it was the overarching goal of this research to establish whether these differences are based upon species-specific oxygen sensitivities and unique hypoxia response strategies and mechanisms, by utilising a novel, comparative combination of behavioural, physiological, molecular and gill morphological studies. To study whether the three closely related galaxiid species exhibit unique behavioural responses upon encountering a hypoxic environment, the ability to sense progressive hypoxia, as well as behavioural responses and hypoxia avoidance thresholds were investigated in a hypoxia-normoxia choice chamber. Inanga demonstrated avoidance of mild hypoxia (< 5.9 mg L-1) and increased the frequency of visits into both the hypoxic and normoxic sides of the choice chamber in severe hypoxia (at… Advisors/Committee Members: Ling, Nicholas (advisor), Hicks, Brendan J (advisor), Olszewski, Pawel K (advisor).

Subjects/Keywords: Hypoxia; Behaviour; Avoidance; Oxygen consumption; Respirometry; Critical oxygen concentration; Oxygen sensing; Neuroepithelial cell; NEC; Hypoxia-inducible factor 1; HIF-1a; Gill morphology; Swimming speed; Galaxiids; thesis with publication

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ulrich, C. (2017). Comparative hypoxia responses and oxygen sensing in galaxiid fishes . (Doctoral Dissertation). University of Waikato. Retrieved from http://hdl.handle.net/10289/11575

Chicago Manual of Style (16^th Edition):

Ulrich, Christine. “Comparative hypoxia responses and oxygen sensing in galaxiid fishes .” 2017. Doctoral Dissertation, University of Waikato. Accessed April 13, 2021. http://hdl.handle.net/10289/11575.

MLA Handbook (7^th Edition):

Ulrich, Christine. “Comparative hypoxia responses and oxygen sensing in galaxiid fishes .” 2017. Web. 13 Apr 2021.

Vancouver:

Ulrich C. Comparative hypoxia responses and oxygen sensing in galaxiid fishes . [Internet] [Doctoral dissertation]. University of Waikato; 2017. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10289/11575.

Council of Science Editors:

Ulrich C. Comparative hypoxia responses and oxygen sensing in galaxiid fishes . [Doctoral Dissertation]. University of Waikato; 2017. Available from: http://hdl.handle.net/10289/11575

9. Franken, Marcos. Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl.

Degree: 2011, Brazil

URL: http://hdl.handle.net/10183/33314

►

O objetivo deste estudo foi investigar o comportamento da concentração plasmática de triptofano ([TRP]) e de variáveis cinemáticas em séries de treinamento intervalado em diferentes… (more)

▼

O objetivo deste estudo foi investigar o comportamento da concentração plasmática de triptofano ([TRP]) e de variáveis cinemáticas em séries de treinamento intervalado em diferentes percentuais da velocidade crítica (VC) no nado crawl. Foram voluntários 14 nadadores do sexo masculino de nível competitivo, com, pelo menos, quatro anos de experiência na modalidade e nadando 48 ± 11 km por semana. Os indivíduos executaram dois protocolos distintos, em diferentes dias, realizados em piscina de 25 m: 1) repetições de 200 e 400 m, em máxima intensidade (V200 e V400) em ordem aleatória e separadas por, no mínimo, 24 horas, para a determinação da VC; 2) duas séries de treinamento intervalado (repetições de 400 m) até a ocorrência da exaustão, em ordem aleatória, com intervalo mínimo de 24 horas entre elas: série com intensidade equivalente a 95% da VC (VC95) e série com intensidade equivalente a 100% da VC (VC100). Em ambas (VC95 e VC100) foi solicitado para os participantes que realizassem o maior número possível de repetições de 400 m, na velocidade pré-estabelecida, com intervalos de 40 s de repouso passivo. Um pacer luminoso, subaquático, foi utilizado para controle da velocidade de nado. Foram determinados: [TRP], concentração plasmática de prolactina ([PRL]) e concentração plasmática de ácidos graxos livres ([AGL]); concentração de lactato sanguíneo, frequencia cardíaca (FC) e esforço percebido; duração das fases da braçada, modelo de coordenação, índice de coordenação (IdC), simetria ou assimetria de nado, freqüência média de ciclos de braçadas (FB) e distância média percorrida por ciclo de braçada (DC). Os principais resultados foram: (1) [TRP] e [AGL] não apresentaram diferenças na VC95 e na VC100 (p > 0,05); (2) [PRL] apresentou incremento significativo tanto na VC95 como na VC100 (p < 0,05); (3) aumento significativo da [LA] e do EP na VC95 e na VC100 (p < 0,05); (4) incremento significativo em FB e redução na DC, tanto na VC95 como na VC100; (5) valores de IdC similares na VC95 e na VC100. Desta forma, podemos concluir que, nas séries VC95 e VC100, não ocorrem mudanças da [TRP] e da [AGL]. Já o EP, a [LA], a [PRL] e a FC apresentaram incremento em ambas as séries, o que indica que ocorreu fadiga para o exercício realizado nas condições de instabilidade metabólica. IdC não se altera ao longo de uma série de treinamento intervalado tanto em intensidade similar, como abaixo da VC no nado crawl.

The aim of this study was to investigate the changes in plasma tryptophan concentration ([TRP]) and kinematic variables in a series of interval training in different percentages of the critical speed (CS) in front crawl. Volunteers were 14 competitive male swimmers with at least four years experience in this style and swimming 48 ± 11 km per week. The subjects performed two different protocols on different days in a 25 m pool: 1) repetitions of 200 and 400 m at maximum intensity (S200 and S400) in random order and separated by at least 24 hours of the CS, 2) two sets of interval training (repetitions of 400 m) until the…

Advisors/Committee Members: Castro, Flavio Antonio de Souza.

Subjects/Keywords: Natação; Treinamento; Fisiologia do exercício; Swimming; Tryptophan; Index of coordination; Critical speed

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Franken, M. (2011). Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/33314

Chicago Manual of Style (16^th Edition):

Franken, Marcos. “Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl.” 2011. Masters Thesis, Brazil. Accessed April 13, 2021. http://hdl.handle.net/10183/33314.

MLA Handbook (7^th Edition):

Franken, Marcos. “Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl.” 2011. Web. 13 Apr 2021.

Vancouver:

Franken M. Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl. [Internet] [Masters thesis]. Brazil; 2011. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10183/33314.

Council of Science Editors:

Franken M. Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl. [Masters Thesis]. Brazil; 2011. Available from: http://hdl.handle.net/10183/33314

Florida International University

10. Gatto, John Vincent. Incorporating Early Life History and Recruitment in Analysis of Population Dynamics of Wetland Fishes.

Degree: PhD, Biology, 2019, Florida International University

URL: https://digitalcommons.fiu.edu/etd/4353 ; FIDC007841

► Hydrological variation is believed to be the major abiotic factor influencing fish recruitment in floodplain ecosystems. However, past studies fail to address the impact… (more)

▼ Hydrological variation is believed to be the major abiotic factor influencing fish recruitment in floodplain ecosystems. However, past studies fail to address the impact of hydrology on the three major drivers of recruitment: age-specific growth and mortality, and dispersal. I examined long-term recruitment dynamics for six fish species inhabiting the Everglades by addressing the impact of hydrology on these important characteristics. I then linked these changes to annual fluctuations in population size. Before interpreting time-series data on recruitment, I evaluated the impact of size-selective bias from sampling gear on our interpretation of hydrological drivers of recruitment. Analyses revealed that individuals under the size of maturation were under represented, but these individuals could be estimated using a stage-based model. Analyses of the corrected data revealed that recruitment primarily occurred in October for most species, driven by changes in water depth and the number of days post-drying. Recruitment variability in fish stocks is commonly assumed to be controlled by density-dependent processes. I examined density-dependent feedback on recruitment by evaluating stock-recruitment models. I found strong evidence for density-dependence along a wide hydrological gradient. This feedback was driven by recruitment from the previous season and was strongest at short and long hydroperiods. Immigration/emigration also explained residual variance in these models. To quantify dispersal, I evaluated the recolonization patterns following disturbance. The sequence of species arrival was highly repeatable. Interspecific differences in both speed and directedness estimated by swimming tests and field data best described arrival order of these species. Directedness was more strongly correlated with faster recolonization than speed. The transitional age when mortality equals weight-specific growth (M’/G’=1) is an important indicator of recruitment success. Analyses revealed that the transitional age was correlated with annual changes in species abundance. The timing of the transitional age occurred later in life as disturbance frequency increased, with highly dispersing species unaffected. My research has detailed how hydrology influences the three indicators of recruitment success. Interpretation of these results can only be accomplished after accounting for bias in sampling gear, identifying the source of density-dependent mortality, and accounting for movement from long-distance dispersal. Advisors/Committee Members: Joel Trexler, Edward Houde, Yuying Zhang, Yannia Papastamatiou, Gary Rand.

Subjects/Keywords: cohort analysis; recruitment; floodplains; size bias; density-dependence; stock-recruitment; hydrology; seasonality; Agent Based Modeling; critical swimming speed; diffusion model; dispersal; functional traits; primary succession; sequential colonization; wetland; growth; mortality; disturbance; life history; Everglades fishes; Aquaculture and Fisheries; Population Biology

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Gatto, J. V. (2019). Incorporating Early Life History and Recruitment in Analysis of Population Dynamics of Wetland Fishes. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/4353 ; FIDC007841

Chicago Manual of Style (16^th Edition):

Gatto, John Vincent. “Incorporating Early Life History and Recruitment in Analysis of Population Dynamics of Wetland Fishes.” 2019. Doctoral Dissertation, Florida International University. Accessed April 13, 2021. https://digitalcommons.fiu.edu/etd/4353 ; FIDC007841.

MLA Handbook (7^th Edition):

Gatto, John Vincent. “Incorporating Early Life History and Recruitment in Analysis of Population Dynamics of Wetland Fishes.” 2019. Web. 13 Apr 2021.

Vancouver:

Gatto JV. Incorporating Early Life History and Recruitment in Analysis of Population Dynamics of Wetland Fishes. [Internet] [Doctoral dissertation]. Florida International University; 2019. [cited 2021 Apr 13]. Available from: https://digitalcommons.fiu.edu/etd/4353 ; FIDC007841.

Council of Science Editors:

Gatto JV. Incorporating Early Life History and Recruitment in Analysis of Population Dynamics of Wetland Fishes. [Doctoral Dissertation]. Florida International University; 2019. Available from: https://digitalcommons.fiu.edu/etd/4353 ; FIDC007841

Queens University

11. Holden, Courtney. ECOLOGICAL INSIGHTS FROM δ18O AND δ13C OF AMERICAN EEL ANGUILLA ROSTRATA OTOLITHS — A COMBINATION OF LABORATORY AND FIELD APPROACHES .

Degree: Biology, Queens University

URL: http://hdl.handle.net/1974/28634

► Fish species with complex life cycles, extensive migrations, or broad distributional ranges, such as the American eel, Anguilla rostrata, commonly have poorly understood ecologies because… (more)

▼ Fish species with complex life cycles, extensive migrations, or broad distributional ranges, such as the American eel, Anguilla rostrata, commonly have poorly understood ecologies because of a lack of information about their ambient environment. Stable isotopes of otoliths offer lifelong records of ambient conditions and life history, making them a promising tissue for ecological studies. However, unexplained variation in δ18O geothermometers among fish species has necessitated use of species-specific geothermometers, thus limiting the tool’s broad utility. Furthermore, interpretations of δ13C of otoliths are complicated by multiple driving factors (e.g., diet, DIC) and disputes over the possible influence of metabolic rate on both isotopes. In this thesis, I used three controlled laboratory experiments to isolate and examine: (1) the relationship between temperature and δ18O of otoliths, (2) the relative contribution of diet versus DIC to δ13C of otoliths, and (3) metabolic rate influences δ13C and δ18O. In experiment 1, I developed an eel-specific δ18O fractionation equation (geothermometer); the slope was shallower than equations for other species. In experiment 2, otoliths reflected the full δ13C range of four isotopically distinct diets, regardless of diet quality. Mixing models showed diet contributed ~50% of total δ13C to otoliths. In experiment 3, I used the novel approach of manipulating swimming activity to induce a gradient of metabolic rates. The results showed no relationship between metabolic rate and δ13C. I propose that temperature may explain the apparent connection between metabolic rate and δ13C. Finally, I applied the laboratory findings to an ecological study of stocked American eels in the St. Lawrence River. The δ18O of eel otoliths could be used to estimate water temperature within 0.4 °C of their habitat. I used δ13C to determine habitat use after stocking and found that eels change habitat once they reach a specific age and size. Collectively, my thesis integrates three long-term laboratory experiments and 6 years of field data to elucidate the role of temperature, diet, and metabolic rate on the oxygen and carbon isotope compositions of otoliths with implications for future ecology studies of species with complex life histories.

Subjects/Keywords: Stable isotopes ; Geothermometer ; St. Lawrence River ; Metabolic rate ; Oxygen consumption rate ; Diet ; Optimum growth temperature ; Critical swimming speed ; Stable Isotope Ecology

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Holden, C. (n.d.). ECOLOGICAL INSIGHTS FROM δ18O AND δ13C OF AMERICAN EEL ANGUILLA ROSTRATA OTOLITHS — A COMBINATION OF LABORATORY AND FIELD APPROACHES . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/28634

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Holden, Courtney. “ECOLOGICAL INSIGHTS FROM δ18O AND δ13C OF AMERICAN EEL ANGUILLA ROSTRATA OTOLITHS — A COMBINATION OF LABORATORY AND FIELD APPROACHES .” Thesis, Queens University. Accessed April 13, 2021. http://hdl.handle.net/1974/28634.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Holden, Courtney. “ECOLOGICAL INSIGHTS FROM δ18O AND δ13C OF AMERICAN EEL ANGUILLA ROSTRATA OTOLITHS — A COMBINATION OF LABORATORY AND FIELD APPROACHES .” Web. 13 Apr 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Holden C. ECOLOGICAL INSIGHTS FROM δ18O AND δ13C OF AMERICAN EEL ANGUILLA ROSTRATA OTOLITHS — A COMBINATION OF LABORATORY AND FIELD APPROACHES . [Internet] [Thesis]. Queens University; [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1974/28634.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Holden C. ECOLOGICAL INSIGHTS FROM δ18O AND δ13C OF AMERICAN EEL ANGUILLA ROSTRATA OTOLITHS — A COMBINATION OF LABORATORY AND FIELD APPROACHES . [Thesis]. Queens University; Available from: http://hdl.handle.net/1974/28634

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

12. Omlin, Teye D. Effects of Hypoxia and Exercise on In Vivo Lactate Kinetics and Expression of Monocarboxylate Transporters in Rainbow Trout .

Degree: 2014, University of Ottawa

URL: http://hdl.handle.net/10393/30652

► The current understanding of lactate metabolism in fish is based almost entirely on interpretation of concentration measurements that cannot be used to infer changes in… (more)

▼ The current understanding of lactate metabolism in fish is based almost entirely on interpretation of concentration measurements that cannot be used to infer changes in flux. Moreover, the transporters regulating these fluxes have never been characterized in rainbow trout. My goals were: (1) to quantify lactate fluxes in rainbow trout under normoxic resting conditions, during acute hypoxia, and exercise by continuous infusion of [U-14C] lactate; (2) to determine lactate uptake capacity of trout tissues by infusing exogenous lactate in fish rest and during graded exercise, and (3) to clone monocarboxylate transporters (MCTs) and determine the effects of exhausting exercise on their expression. Such information could prove important to understand the mechanisms underlying the classic “lactate retention” seen in trout white muscle after intense exercise. In normoxic resting fish, the rates of appearance (Ra) and disappearance (Rd) of lactate were always matched (~18 to 13 µmol kg-1 min-1), thereby maintaining a low baseline blood lactate concentration (~0.8 mM). In hypoxic fish, Ra lactate increased from baseline to 36.5 µmol kg-1 min-1, and was accompanied by an unexpected 52% increase in Rd reaching 30.3 µmol kg-1 min-1, accounting for a rise in blood lactate to 8.9 mM. In exercising fish, lactate flux was stimulated > 2.4 body lengths per second (BL s-1). As the fish reached critical swimming speed (Ucrit), Ra lactate was more stimulated (+67% to 40.4 μmol kg-1 min-1) than Rd (+41% to 34.7 μmol kg-1 min-1), causing an increase in blood lactate to 5.1mM. Fish infused with exogenous lactate stimulated Rd lactate by 300% (14 to 56 μmol kg-1 min-1) during graded exercise, whereas the Rd in resting fish increased by only 90% (21 to 40 µmol kg-1 min-1). Four MCT isoforms were partially cloned and characterized in rainbow trout: MCT1b was the most abundant in heart, and red muscle, but poorly expressed in gill and brain where MCT1a and MCT2 were prevalent. MCT4 was more expressed in the heart. Transcript levels of MCT2 (+260%; brain), MCT1a (+90%; heart) and MCT1b (+50%; heart) were stimulated by exhausting exercise. This study shows that: (i) the increase in Rd lactate plays a strategic role in reducing the lactate load imposed on the circulation. Without this response, blood lactate accumulation would double; (ii) a high capacity for lactate disposal in rainbow trout tissues is elicited by the increased blood-to-tissue lactate gradient when extra lactate is administered; and (iii) rainbow trout may be unable to release large lactate loads rapidly from white muscle after exhausting exercise (lactate retention) because they poorly express MCT4 in white muscle and fail to upregulate its expression during exercise.

Subjects/Keywords: In vivo metabolite fluxes; Lactate kinetics; Rates of lactate appearance and disposal; Anaerobic glycolysis; Carbohydrate metabolism; Continuous tracer infusion; Oncorhynchus mykiss; Hypoxia; Lactate turnover; Locomotion energetics; Fish exercise; Critical swimming speed (Ucrit); Respirometry; Monocarboxylate transporters (MCT); Exogenous lactate infusion; Lactate metabolism

…the lactate supplement can improve critical swimming speed in rainbow trout. In chapter 5, I… …resting rainbow trout during infusion of exogenous lactate...92 Figure 4.3: Critical swimming… …67 CHAPTER 4: SUPPLEMENTAL LACTATE DOES NOT AFFECT SWIMMING PERFORMANCE OR ENDOGENOUS… …metabolic rate, in resting or swimming rainbow trout infused with exogenous lactate… …during steady-state swimming at 1.7 BL s-1. �� …. �� .69 Figure 3.2. Effects of steady…

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Omlin, T. D. (2014). Effects of Hypoxia and Exercise on In Vivo Lactate Kinetics and Expression of Monocarboxylate Transporters in Rainbow Trout . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/30652

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Omlin, Teye D. “Effects of Hypoxia and Exercise on In Vivo Lactate Kinetics and Expression of Monocarboxylate Transporters in Rainbow Trout .” 2014. Thesis, University of Ottawa. Accessed April 13, 2021. http://hdl.handle.net/10393/30652.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Omlin, Teye D. “Effects of Hypoxia and Exercise on In Vivo Lactate Kinetics and Expression of Monocarboxylate Transporters in Rainbow Trout .” 2014. Web. 13 Apr 2021.

Vancouver:

Omlin TD. Effects of Hypoxia and Exercise on In Vivo Lactate Kinetics and Expression of Monocarboxylate Transporters in Rainbow Trout . [Internet] [Thesis]. University of Ottawa; 2014. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10393/30652.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Omlin TD. Effects of Hypoxia and Exercise on In Vivo Lactate Kinetics and Expression of Monocarboxylate Transporters in Rainbow Trout . [Thesis]. University of Ottawa; 2014. Available from: http://hdl.handle.net/10393/30652

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations