Recent introgressive hybridization revealed by exclusive mtDNA transfer from Oreochromis leucostictus (Trewavas, 1933) to Oreochromis niloticus (Linnaeus, 1758) in Lake Baringo, Kenya |
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| Authors: | D W Nyingi J-F Agnèse ‡§ |
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| Institution: | Laboratoire Génome, Populations, Interactions, Adaptation, Universitéde Montpellier II CC 63 Place Eugène Bataillon, 34095 Montpellier Cedex 5, France; , National Museums of Kenya, Ichthyology Department, P. O. Box 40658 -00100 Nairobi, Kenya; and Institut de Recherche pour le Développement, 213 rue La Fayette, 75180 Paris Cedex 10, France |
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| Abstract: | Nuclear DNA and mtDNA polymorphisms were surveyed in various species of East African Oreochromis . In Lake Baringo, where only Oreochromis niloticus baringoensis is present, alien mtDNA haplotypes were observed, apparently the result of introgressive hybridization with Oreochromis leucostictus . This introgression is not accompanied by any substantial or recorded transfer of nuclear genes into O. n. baringoensis . |
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| Keywords: | hybridization microsatellites mtDNA tilapia |
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