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R Soc Open Sci. 2015 Mar 4;2(3):140498. doi: 10.1098/rsos.140498. eCollection 2015 Mar.

Back to Tanganyika: a case of recent trans-species-flock dispersal in East African haplochromine cichlid fishes.

Author information

1
Zoological Institute , University of Basel , Basel 4051, Switzerland.
2
Department of Biology , University of Burundi , Bujumbura, Burundi ; Royal Museum for Central Africa , Tervuren 3080, Belgium.
3
Royal Museum for Central Africa , Tervuren 3080, Belgium ; Laboratory of Biodiversity and Evolutionary Genomics , University of Leuven , Leuven 3000, Belgium.

Abstract

The species flocks of cichlid fishes in the East African Great Lakes are the largest vertebrate adaptive radiations in the world and illustrious textbook examples of convergent evolution between independent species assemblages. Although recent studies suggest some degrees of genetic exchange between riverine taxa and the lake faunas, not a single cichlid species is known from Lakes Tanganyika, Malawi and Victoria that is derived from the radiation associated with another of these lakes. Here, we report the discovery of a haplochromine cichlid species in Lake Tanganyika, which belongs genetically to the species flock of haplochromines of the Lake Victoria region. The new species colonized Lake Tanganyika only recently, suggesting that faunal exchange across watersheds and, hence, between isolated ichthyofaunas, is more common than previously thought.

KEYWORDS:

Haplochromis sp. ‘Chipwa’; Lake Victoria; adaptive radiation; superflock

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