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Molecular Biology and Evolution 19:574-578 (2002)
© 2002 Society for Molecular Biology and Evolution

Accelerated Evolution of the Surface Amino Acids in the WD-Repeat Domain Encoded by the hagoromo Gene in an Explosively Speciated Lineage of East African Cichlid Fishes

Yohey Terai, Naoko Morikawa, Koichi Kawakami and Norihiro Okada

*Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan;
{dagger}Department of Tumor Biology, Institute of Medical Science, University of Tokyo

Lakes Victoria, Malawi, and Tanganyika in the East African Rift Valley harbor approximately 200, 400, and 170 endemic species of cichlid fishes, respectively (Fryer and Iles 1972Citation ; Greenwood 1984Citation ). These fishes provide a spectacular example of the explosive adaptive radiation of living vertebrates (Fryer and Iles 1972Citation ; Greenwood 1984Citation ). They exploit almost all resources that are available to freshwater fishes in general (Fryer and Iles 1972Citation ; Greenwood 1984Citation ) and are extremely diverse, both ecologically and morphologically, despite having evolved during a very short evolutionary period (Meyer et al. 1990Citation ; Johnson et al. 1996Citation ). In cichlids, species are sexually isolated as a consequence of mate choice (Crapon De Caprona 1996Citation ; Seehausen, Van Alphen, and Witte 1997Citation ), which is based on coloration. Assortative mating among individuals with various colorations can rapidly lead to sexual isolation of color morphs (Seehausen, Van Alphen, and . . . [Full Text of this Article]

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 Proc. Natl. Acad. Sci. USAHome page
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