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You searched for subject:(dorylaimidae). Showing records 1 – 3 of 3 total matches.

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1. Kuiper, K. Introductie en vestiging van planteparasitaire aaltjes in nieuwe polders, in het bijzonder van Trichodorus teres.

Degree: 1977, Landbouwhogeschool Wageningen

The soil of the newly reclaimed polders of the former Zuiderzee was initially found to be free from plant parasitic nematodes. This meant that the practice of crop rotation, as used with 'old' land, did not need to be applied for a number of years. After several years however, nematode populations became quite noticeable, sometimes to such a degree that the associated problems and restrictions have become important for agricultural management. The first infestations in the Northeastpolder, reclaimed in 1942, were already noticeable in 1949, in Eastern Flevoland, reclaimed in 1958, the first infestations were already noted in the neighbourhood of temporary housing at Lelystad and Roggebotsluis in 1959. Information has been collected from field research, field and laboratory trials in an attempt to discover the mode of entry of plant parasitic nematodes in the new polders. Special attention has been paid to the factors influencing their establishment and behaviour, the damage they can cause and the possibilities of control. <em/> Entrance and establishment The first infestations to be noted involved young trees, shrubs and perennials which had been brought in from 'old' land for afforestation and for planting along the roads, around the villages and farmhouses and on allotments (table 1, 2 and 3). Many species of plant parasitic nematodes were in large concentrations tranfered in this way. The road verges also appeared to be lines of contamination as infection can be caused by the soil fallen from transport carriers which often come from outside the polders. In addition, infection can accompany seeds and planting material (3.2.1). Moreover, research indicates a more general and scattered infestation, this infestation was already noticeable (fig. 2) before the soil was prepared for agricultural use. It is possible that introduction by birds or by wind may be responsible for light infections of the reed-vegetation whereby nematode populations can build up (3.2.4). Spreading by birds or wind could not, however, be demonstrated in our experiments. Just how far nematodes can settle and spread depends on a number of factors such as their way of reproduction (3.3.1), the presence of host plants (3.3.2) and on the soil type (3.3.3). It was curious that the first noticeable attacks of agricultural and horticultural crops were mainly caused by nematode species with an asexual reproduction. The establishment of bisexual species is possibly restricted because of the extremely low numbers of nematodes spread, when the question of socalled underpopulation can arise. Cyst-forming nematodes or nematodes present in soil clods or in the soil adhering to roots can be an ideal means of causing a local infestation. The influence of host crops, mainly expressed by the choice and sequence of the crops grown on farms, was clearly shown by a crop rotation trial (table 13). Quite independant of crop rotation, polyphagous nematode species, such as Trichodorus teres, demonstrated a rapid… Advisors/Committee Members: J. Dekker.

Subjects/Keywords: distributie; dorylaimidae; enoplidae; epidemiologie; longidoridae; plantenziekten; plantenplagen; nederland; flevoland; Epidemiologie van plantenziekten en -plagen; Plantenparasitaire nematoden; distribution; dorylaimidae; enoplidae; epidemiology; longidoridae; plant diseases; plant pests; netherlands; flevoland; Epidemiology of Plant Pests and Diseases; Plant Parasitic Nematodes

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

APA (6th Edition):

Kuiper, K. (1977). Introductie en vestiging van planteparasitaire aaltjes in nieuwe polders, in het bijzonder van Trichodorus teres. (Doctoral Dissertation). Landbouwhogeschool Wageningen. Retrieved from http://library.wur.nl/WebQuery/wurpubs/71108 ; urn:nbn:nl:ui:32-71108 ; urn:nbn:nl:ui:32-71108 ; http://library.wur.nl/WebQuery/wurpubs/71108

Chicago Manual of Style (16th Edition):

Kuiper, K. “Introductie en vestiging van planteparasitaire aaltjes in nieuwe polders, in het bijzonder van Trichodorus teres.” 1977. Doctoral Dissertation, Landbouwhogeschool Wageningen. Accessed December 13, 2019. http://library.wur.nl/WebQuery/wurpubs/71108 ; urn:nbn:nl:ui:32-71108 ; urn:nbn:nl:ui:32-71108 ; http://library.wur.nl/WebQuery/wurpubs/71108.

MLA Handbook (7th Edition):

Kuiper, K. “Introductie en vestiging van planteparasitaire aaltjes in nieuwe polders, in het bijzonder van Trichodorus teres.” 1977. Web. 13 Dec 2019.

Vancouver:

Kuiper K. Introductie en vestiging van planteparasitaire aaltjes in nieuwe polders, in het bijzonder van Trichodorus teres. [Internet] [Doctoral dissertation]. Landbouwhogeschool Wageningen; 1977. [cited 2019 Dec 13]. Available from: http://library.wur.nl/WebQuery/wurpubs/71108 ; urn:nbn:nl:ui:32-71108 ; urn:nbn:nl:ui:32-71108 ; http://library.wur.nl/WebQuery/wurpubs/71108.

Council of Science Editors:

Kuiper K. Introductie en vestiging van planteparasitaire aaltjes in nieuwe polders, in het bijzonder van Trichodorus teres. [Doctoral Dissertation]. Landbouwhogeschool Wageningen; 1977. Available from: http://library.wur.nl/WebQuery/wurpubs/71108 ; urn:nbn:nl:ui:32-71108 ; urn:nbn:nl:ui:32-71108 ; http://library.wur.nl/WebQuery/wurpubs/71108

2. Rybarczyk-Mydlowska, K. Phylogenetic relationships within major nematode clades based on multiple molecular markers.

Degree: 2013, NARCIS

Nematodes are probably the most abundant Metazoans on our planet. They are present in densities of millions of individuals per square meter in soil and sediments. However, these inconspicuous animals are hardly known to the general public as most individuals are colorless and smaller than 1 mm. If people are aware of nematodes, it is because of the damage they inflict on humans and animals such as elephantiasis (Wucheria bancrofti) and ascariasis (in humans Ascaris lubricoides; in pigs Ascaris suum), or on plants such as potato (potato cyst nematode) and tomato (root-knot nematodes). To a far lesser extent it is known that majority of nematodes are key players in the soil food web, and as such they can be used as indicators for the biological condition of the environment they live in. This PhD thesis focuses on terrestrial nematodes belonging to four orders: Dorylaimida, Mononchida, Aphelenchida and Tylenchida, which represent animals of ecological and economical relevance. Members of families belonging to the first two are highly sensitive to the environmental disturbances, and are informative as biological indicators. The order Aphelenchida harbors numerous facultative plant-parasitic species. In the absence of a host plant, most of them are able to feed on fungi as an alternative food source. This is in contrast to the distal representatives of the order Tylenchida that are invariably obligate parasites of higher plants. Stress-sensitive nematode orders Dorylaimida and Mononchida have a high potential for soil health assessment. The SSU rDNA-based analysis of these two orders resulted in two highly distinct phylogenies. Relationships among the Mononchida, an order dominated by carnivorous nematodes, were to some extent in accordance with the classical nematode systematics. It is noted that the families Mylonchulidae, Mononchidae and Anatonchidae are not monophyletic. Nevertheless, it was possible to design family-specific primers for rDNA-based molecular detection. On the contrary, resolution of the SSU rDNA tree of the Dorylaimida was extremely poor, except for the plant-parasitic family Longidoridae and the mainly predaceous family Nygolaimidae. Analysis of a 1,000 bp fragment of the 5’ region of large subunit (LSU) rDNA resulted in an improved resolution. Twelve subclades were distinguished and this topology was only in slight agreement with the classical systematics of the suborder Dorylaimina. The poor resolution generated by SSU rDNA sequence analysis within this species-rich suborder is remarkable; it has not been observed in any other suborder in the phylum Nematoda. Possibly, Dorylaimina diversification is the result of rapid speciation events. A plant-parasitic lifestyle apparently accelerates the rate of change of rDNA genes. This was not only true for the obligate plant-parasitic Longidoridae, but also for the facultative plant-parasitic Aphelenchoididae. Most members of the genus Aphelenchoides are fungivores, but a few of them… Advisors/Committee Members: Wageningen University, Jaap Bakker, Hans Helder, Geert Smant.

Subjects/Keywords: vrijlevende nematoden; dorylaimidae; mononchidae; aphelenchidae; fylogenetica; moleculaire merkers; moleculaire genetica; Evolutie en fylogenie; Nematoda; free living nematodes; dorylaimidae; mononchidae; aphelenchidae; phylogenetics; molecular markers; molecular genetics; Free-living Nematodes; Evolution and Phylogeny; Nematoda

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

APA (6th Edition):

Rybarczyk-Mydlowska, K. (2013). Phylogenetic relationships within major nematode clades based on multiple molecular markers. (Doctoral Dissertation). NARCIS. Retrieved from http://library.wur.nl/WebQuery/wurpubs/442675 ; urn:nbn:nl:ui:32-442675 ; urn:nbn:nl:ui:32-442675 ; http://library.wur.nl/WebQuery/wurpubs/442675

Chicago Manual of Style (16th Edition):

Rybarczyk-Mydlowska, K. “Phylogenetic relationships within major nematode clades based on multiple molecular markers.” 2013. Doctoral Dissertation, NARCIS. Accessed December 13, 2019. http://library.wur.nl/WebQuery/wurpubs/442675 ; urn:nbn:nl:ui:32-442675 ; urn:nbn:nl:ui:32-442675 ; http://library.wur.nl/WebQuery/wurpubs/442675.

MLA Handbook (7th Edition):

Rybarczyk-Mydlowska, K. “Phylogenetic relationships within major nematode clades based on multiple molecular markers.” 2013. Web. 13 Dec 2019.

Vancouver:

Rybarczyk-Mydlowska K. Phylogenetic relationships within major nematode clades based on multiple molecular markers. [Internet] [Doctoral dissertation]. NARCIS; 2013. [cited 2019 Dec 13]. Available from: http://library.wur.nl/WebQuery/wurpubs/442675 ; urn:nbn:nl:ui:32-442675 ; urn:nbn:nl:ui:32-442675 ; http://library.wur.nl/WebQuery/wurpubs/442675.

Council of Science Editors:

Rybarczyk-Mydlowska K. Phylogenetic relationships within major nematode clades based on multiple molecular markers. [Doctoral Dissertation]. NARCIS; 2013. Available from: http://library.wur.nl/WebQuery/wurpubs/442675 ; urn:nbn:nl:ui:32-442675 ; urn:nbn:nl:ui:32-442675 ; http://library.wur.nl/WebQuery/wurpubs/442675

3. Holterman, M.H.M. Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications.

Degree: 2007, NARCIS

Nematodes – “eel worms”; members of the phylum Nematoda – can be considered as a success story within the Metazoa (multicellular, heterotrophic eukaryotes in which cells lack cell walls): they are speciose and – probably - the most numerous group of multicellular animals on our planet. Nematodes are present in virtually all terrestrial, freshwater and marine habitats. Nematodes are trophically diverse; they may feed on bacteria, fungi/oomycetes, algae and protozoa, other nematodes or on a combination of these (omnivores), or live as facultative or obligatory parasites of plants or animals. As they are abundant, ubiquitous and occupy several trophic levels, they play an important role in the soil food web. Nematode parasites of animals affect billions of humans and livestock, while plant parasites such as cyst, root knot and lesion nematodes cause large agricultural losses worldwide. Despite their undisputed ecological and economical relevance, the systematics of the phylum Nematoda is far from established. One of the aims of this research was to further elucidate nematode phylogeny using molecular data. First a phylogenetic tree was constructed of 349 taxa, spanning the entire phylum Nematoda, on the basis of full length small subunit ribosomal DNA (SSU rDNA) sequences. A series of mostly well-supported bifurcations defined twelve major clades, whereas the most basal clade was defined by representatives of the Enoplida and Triplonchida. Our analysis confirmed the paraphyly of the Adenophorea. Furthermore it was found that the SSU rDNA from representatives of the distal clades evolved at a higher rate than the SSU rDNA from the basal clades. In the meantime, a substantial number of sequences was added to our overall SSU rDNA nematode alignment - both public data (GenBank) and data generated by ourselves (≈ 1,500 sequences in total; February 2008). It is noted that the clade division as proposed in 2006 on the basis of “only” 349 taxa still seems to be valid. Subsequent research focused on three specific groups; Dorylaimia, Chromadoria and Tylenchomorpha. Within the suborder Dorylaimina, the SSU rDNA provided an exceptionally low phylogenetic signal, and - therefore – a part (≈ 1,000 bp) of the more variable large subunit ribosomal DNA (LSU rDNA) was analyzed. In most cases nematode relationships could be elucidated with good support, although some areas in the trees remained unresolved. Generally speaking the results of molecular phylogenetics corresponded fairly well with classical nematode taxonomy. The main exception was the order Dorylaimida where twelve subclades could be distinguished which bore little resemblance to classical taxonomy. Furthermore the suitability of ribosomal DNA for a (semi-) quantative molecular identification method was demonstrated using quantitative PCR (q-PCR) and primers designed to specifically amplify members of the order Mononchida and the potato cyst nematodes Globodera pallida and G. rostochiensis. Plant parasitism has arisen several times within the phylum… Advisors/Committee Members: Wageningen University, Jaap Bakker, Hans Helder.

Subjects/Keywords: nematoda; ribosomaal dna; fylogenetica; klassering volgens erfelijke eigenschappen; fylogenie; plantenparasitaire nematoden; vrijlevende nematoden; dorylaimidae; chromadoridae; tylenchidae; zeenematoden; single nucleotide polymorphism; Landbouwkundige nematologie (algemeen); nematoda; ribosomal dna; phylogenetics; cladistics; phylogeny; plant parasitic nematodes; free living nematodes; dorylaimidae; chromadoridae; tylenchidae; marine nematodes; single nucleotide polymorphism; Agricultural Nematology (General)

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

APA (6th Edition):

Holterman, M. H. M. (2007). Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications. (Doctoral Dissertation). NARCIS. Retrieved from http://library.wur.nl/WebQuery/wurpubs/363576 ; urn:nbn:nl:ui:32-363576 ; urn:nbn:nl:ui:32-363576 ; http://library.wur.nl/WebQuery/wurpubs/363576

Chicago Manual of Style (16th Edition):

Holterman, M H M. “Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications.” 2007. Doctoral Dissertation, NARCIS. Accessed December 13, 2019. http://library.wur.nl/WebQuery/wurpubs/363576 ; urn:nbn:nl:ui:32-363576 ; urn:nbn:nl:ui:32-363576 ; http://library.wur.nl/WebQuery/wurpubs/363576.

MLA Handbook (7th Edition):

Holterman, M H M. “Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications.” 2007. Web. 13 Dec 2019.

Vancouver:

Holterman MHM. Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications. [Internet] [Doctoral dissertation]. NARCIS; 2007. [cited 2019 Dec 13]. Available from: http://library.wur.nl/WebQuery/wurpubs/363576 ; urn:nbn:nl:ui:32-363576 ; urn:nbn:nl:ui:32-363576 ; http://library.wur.nl/WebQuery/wurpubs/363576.

Council of Science Editors:

Holterman MHM. Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications. [Doctoral Dissertation]. NARCIS; 2007. Available from: http://library.wur.nl/WebQuery/wurpubs/363576 ; urn:nbn:nl:ui:32-363576 ; urn:nbn:nl:ui:32-363576 ; http://library.wur.nl/WebQuery/wurpubs/363576

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