Title: Genetic variation and divergence of the sibling pair of cyprinid fishes, Notropis cornutus and N. chrysocephalus
Journal Title: Biochemical Systematics and Ecology
Publication Date: 1985
Start Page: 471
End Page: 476
Published online: online 19 December 2002
Affiliations: Department of Biological Sciences, Wayne State University, Detroit, MI 48202, U.S.A.
Abstract: al starch gel electrophoresis was used to estimate the amount of Genetic divergence between Notropis cornutus and N. chrysocephalus. Measures of Genetic identity (1) and distance (D) were 0.881 and 0.127 ± 0.055 (s.e.), respectively. These estimates correspond more closely to the sibling species status of these taxa than other previously reported estimates. Notropis cornutus was found to be significantly more variable than N. chrysocephalus electrophoretically and morphologically. Assuming the existence of an electrophoretic clock, the time of divergence was calculated to be roughly 1.9–2.5 million years. This estimate corresponds very closely to a previously hypothesized late Pliocene divergence.
Received: 30 April 1984
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