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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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Congruence between allozyme and RADP data in assessing macrogeographic genetic variation in the periwinkle Littorina striata (Mollusca, Gastropoda) De Wolf, H.; Backeljau, T.; Verhagen, R. (1998). Congruence between allozyme and RADP data in assessing macrogeographic genetic variation in the periwinkle Littorina striata (Mollusca, Gastropoda). Biol. Jb. Dodonaea 65: 135-136 In: Biologisch Jaarboek (Dodonaea). Koninklijk Natuurwetenschappelijk Genootschap Dodonaea: Gent. ISSN 0366-0818, meer Ook verschenen in: Beeckman, T.; Caemelbeke, K. (Ed.) (1998). Populations: Natural and manipulated, symposium organized by the Royal Society of Natural Sciences Dodonaea, University of Gent, 29 October 1997. Biologisch Jaarboek (Dodonaea), 65. Koninklijk Natuurwetenschappelijk Genootschap Dodonaea: Gent. 257 pp., meer

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VLIZ: Non-open access 387172 [ aanvragen ]

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Trefwoorden

Conferences Genetic diversity Isolating mechanisms > Geographical isolation Gastropoda [WoRMS]; Littorina striata P. P. King, 1832 [WoRMS]; Mollusca [WoRMS] Marien/Kust; Brak water

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Auteurs		Top
De Wolf, H., meer Backeljau, T., meer Verhagen, R.

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Abstract

The population genetic structure of the Macaronesian planktonic developing periwinkle Littorina striata was analysed, using random amplified polymorphic DNA analysis (RAPD). Two primers, yielding six polymorphic loci, were surveyed to infer the population genetic structure of five geographically separated populations (i.e. 10-2000 km). Biased and unbiased allele frequency and heterozygosity levels were estimated and were found to be highly similar. As in previous allozyme studies, our results suggest that populations of L. striata display (1) only little amounts of genetic heterogeneity and population differentiation, (2) high levels of gene flow, between geographically separated populations and within a single population, between two distinct shell morphs (i.e. nodulose and smooth shells) and (3) a tendency for northern populations to be less heterozygous than southern populations. The current results reveal a high congruence between allozyme and RAPD data, suggesting that geographically separated populations and different shell morphs share a common gene pool. Given the fact that our RAPD loci might be considered as neutral markers, we conclude that the previously analysed allozymes were representative for L. striata's entire genome.

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