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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [32773]

Population genetic structure of two bacterivorous nematodes along the North Sea and adjacent estuaries Derycke, S.; Moens, T.; Vincx, M. (2003). Population genetic structure of two bacterivorous nematodes along the North Sea and adjacent estuaries, in: Mees, J. et al. (Ed.) VLIZ Young Scientists' Day, Brugge, Belgium 28 February 2003: book of abstracts. VLIZ Special Publication, 12: pp. 34 In: Mees, J.; Seys, J. (Ed.) (2003). VLIZ Young Scientists' Day, Brugge, Belgium 28 February 2003: book of abstracts. VLIZ Special Publication, 12. Vlaams Instituut voor de Zee: Oostende. VIII, 69 pp., meer In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 272632 [ download pdf ]
Documenttype: Samenvatting

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Trefwoorden

Biology > Genetics Colonization Dispersion Parasites Population characteristics > Population structure Population functions > Recruitment Geomonhystera disjuncta (Bastian, 1865) [WoRMS]; Nematoda [WoRMS]; Pellioditis marina (Bastian, 1865) Andrássy, 1983 [WoRMS] ANE, België [Marine Regions]; ANE, Noordzee [Marine Regions] Marien/Kust; Brak water; Zoet water

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Auteurs		Top
Derycke, S., meer Moens, T., meer Vincx, M., meer

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Abstract

Pellioditis marina and Geomonhystera disjunctaare two nematode species living on decaying brown algae and are abundant in the marine and estuarine environment. They can reach very high densities and are important in decomposing processes. The population genetic structure will be analysed using molecular information and experimental approaches. By integrating different spatial scales and tidal vs nontidal systems, the observed population genetic structure with respect to passive dispersal capacities will be examined. The genetic structure using the mitochondrial cytochrome oxidase c subunit 1- gene and a nuclear gene will give information on intraspecific variation. Furthermore, (a) the assessment of the role of stochastic factors in allowing ‘confunctional’ species to coexist in space and time, and (b) the evaluation of the importance of intraspecific variation in a species’ resilience to major environmental stresses is investigated. A litterbag experiment to follow the colonization pattern of Fucus sp. in the field will be carried out. By analysing the population genetic structure of the colonizing Pellioditis marina, we will be able to see if the nematodes are recruited from populations nearby or from more distant populations. Furthermore, it will be possible to evaluate if this colonization consists of mass recruitment or founder events. Results from this ongoing experiment will be discussed.

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