High quantitative and no molecular differentiation of a freshwater snail (Galba truncatula) between temporary and permanent water habitats.

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Serval ID
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Type
Article: article from journal or magazin.
Collection
Publications
Title
High quantitative and no molecular differentiation of a freshwater snail (Galba truncatula) between temporary and permanent water habitats.
Journal
Molecular Ecology
Author(s)
Chapuis E., Trouve S., Facon B., Degen L., Goudet J.
ISSN
0962-1083[print], 0962-1083[linking]
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
16
Number
16
Pages
3484-3496
Language
english
Abstract
We investigate the variation in quantitative and molecular traits in the freshwater snail Galba truncatula, from permanent and temporary water habitats. Using a common garden experiment, we measured 20 quantitative traits and molecular variation using seven microsatellites in 17 populations belonging to these two habitats. We estimated trait means in each habitat. We also estimated the distributions of overall genetic quantitative variation (QST), and of molecular variation (FST), within and between habitats. Overall, we observed a lack of association between molecular and quantitative variance. Among habitats, we found QST>FST, an indication of selection for different optima. Individuals from temporary water habitat matured older, at a larger size and were less fecund than individuals from permanent water habitat. We discuss these findings in the light of several theories for life-history traits evolution.
Keywords
Animals, Ecosystem, Fresh Water, Genetic Variation, Geography, Quantitative Trait Loci, Snails/classification, Snails/genetics, Switzerland
Pubmed
Web of science
Create date
24/01/2008 18:10
Last modification date
20/08/2019 16:53
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