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Low genetic and morphometric intraspecific divergence in peripheral copadichromis populations (perciformes: cichlidae) in the lake Malawi basin.


ABSTRACT: Peripheral isolated populations may undergo rapid divergence from the main population due to various factors such as a bottleneck or a founder effect followed by genetic drift or local selection pressures. Recent populations of two economically important Copadichromis species in Lake Malombe, a satellite lake of Lake Malawi, were neither genetically nor morphometrically distinct from their source populations in the main lake. Evidence was found for a founder effect which had a different impact on the genetic composition of the two species. In addition, the increased fishing pressure in Lake Malombe may have led to a reduction of the body sizes of both species.

SUBMITTER: Anseeuw D 

PROVIDER: S-EPMC3119589 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature

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Low genetic and morphometric intraspecific divergence in peripheral copadichromis populations (perciformes: cichlidae) in the lake Malawi basin.

Anseeuw Dieter D   Raeymaekers Joost A M JA   Busselen Paul P   Verheyen Erik E   Snoeks Jos J  

International journal of evolutionary biology 20110514


Peripheral isolated populations may undergo rapid divergence from the main population due to various factors such as a bottleneck or a founder effect followed by genetic drift or local selection pressures. Recent populations of two economically important Copadichromis species in Lake Malombe, a satellite lake of Lake Malawi, were neither genetically nor morphometrically distinct from their source populations in the main lake. Evidence was found for a founder effect which had a different impact o  ...[more]

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