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Old fish in a young lake : stone loach (Pisces: Barbatula barbatula) populations in Lake Constance are genetically isolated by distance

Old fish in a young lake : stone loach (Pisces: Barbatula barbatula) populations in Lake Constance are genetically isolated by distance

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BARLUENGA, Marta, Axel MEYER, 2005. Old fish in a young lake : stone loach (Pisces: Barbatula barbatula) populations in Lake Constance are genetically isolated by distance. In: Molecular Ecology. 14(4), pp. 1229-1239. ISSN 0962-1083. eISSN 1365-294X. Available under: doi: 10.1111/j.1365-294X.2005.02468.x

@article{Barluenga2005young-7520, title={Old fish in a young lake : stone loach (Pisces: Barbatula barbatula) populations in Lake Constance are genetically isolated by distance}, year={2005}, doi={10.1111/j.1365-294X.2005.02468.x}, number={4}, volume={14}, issn={0962-1083}, journal={Molecular Ecology}, pages={1229--1239}, author={Barluenga, Marta and Meyer, Axel} }

Meyer, Axel 2005 Barluenga, Marta The genetic structure of 10 populations (453 individuals) of stone loach (Barbatula barbatula L.), a small bottom-dwelling cyprinid fish, in the littoral zone of Lake Constance, central Europe, was investigated by analysing the mitochondrial control region sequences and five microsatellite loci. An unexpectedly high degree of genetic diversity (up to 0.36%) and old estimated age of these populations (> 150 000 years) based on mitochondrial DNA (mtDNA) was found. These findings contrast with the relatively young age of the lake, which could be colonized by fish only after the last ice age around 15 000 BP . Stone loach appears to be an old species in a young lake. Both types of molecular markers showed population genetic structure pronounced in mtDNA (overall Fst = 0.15) but moderate in microsatellites ( Fst= 0.03). As predicted by its life history, philopatry, and limited capacity for dispersal, stone loach populations of Lake Constance show a clear attern of isolation by distance. Geographic distances along the shores are the best explanation for he observed geographical distribution of genetic differentiation ( r = 0.88), indicating that open water represents a barrier for the dispersal of the stone loach. The colonization of Lake Constance might have occurred initially at one location and then populations spread throughout the lake in a stepwise manner following the shoreline, and subsequently remained largely genetically isolated as suggested by the large observed differences among them. 2011-03-24T17:35:05Z Barluenga, Marta Meyer, Axel First publ. in: Molecular Ecology, Vol. 14 (2005), Issue 4, pp. 1229 1239 Old fish in a young lake : stone loach (Pisces: Barbatula barbatula) populations in Lake Constance are genetically isolated by distance 2011-03-24T17:35:05Z application/pdf deposit-license eng

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