Population-structure and genetic diversity in a haplochromine fish cichlid of a satellite lake of Lake Victoria

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dc.contributor.author Abila, Romulus O.
dc.contributor.author Barluenga, M.
dc.contributor.author Engelken, J.
dc.contributor.author Meyer, A.
dc.contributor.author Salzburger, W.
dc.date.accessioned 2014-12-04T12:30:02Z
dc.date.available 2014-12-04T12:30:02Z
dc.date.issued 2004
dc.identifier.citation Molecular Ecology (2004) 13 , 2589–2602 en_US
dc.identifier.uri http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2004.02270.x/pdf
dc.identifier.uri http://hdl.handle.net/123456789/350
dc.description doi: 10.1111/j.1365-294X.2004.02270.x en_US
dc.description.abstract The approximately 500 species of the cichlid fish species flock of Lake Victoria, East Africa, have evolved in a record-setting 100 000 years and represent one of the largest adaptive radiations. We examined the population structure of the endangered cichlid species Xystichromis phytophagus from Lake Kanyaboli, a satellite lake to Lake Victoria in the Kenyan Yala wetlands. Two sets of molecular markers were analysed — sequences of the mitochondrial control region as well as six microsatellite loci — and revealed surprisingly high levels of genetic variability in this species. Mitochondrial DNA sequences failed to detect population structuring among the three sample populations. A model-based population assignment test based on microsatellite data revealed that the three populations most probably aggregate into a larger panmictic population. However, values of population pairwise F ST indicated moderate levels of genetic differentiation for one population. Eleven distinct mitochondrial haplotypes were found among 205 specimens of X. phytophagus , a relatively high number compared to the total number of 54 haplotypes that were recovered from hundreds of specimens of the entire cichlid species flock of Lake Victoria. Most of the X. phytophagus mitochondrial DNA haplotypes were absent from the main Lake Victoria, corroborating the putative importance of satellite lakes as refugia for haplochromine cichlids that went extinct from the main lake in the last decades and possibly during the Late Pleistocene desiccation of Lake Victoria. en_US
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.subject cichlid species flock en_US
dc.subject Lake Victoria en_US
dc.subject microsatellites en_US
dc.subject mitochondrial DNA haplotype network en_US
dc.subject population structure en_US
dc.subject satellite lake en_US
dc.title Population-structure and genetic diversity in a haplochromine fish cichlid of a satellite lake of Lake Victoria en_US
dc.type Article en_US

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