Origin, radiation, dispersion and allopatric hybridization in the chub Leuciscus cephalus.

ABSTRACT: The phylogenetic relationships of 492 chub (Leuciscus cephalus) belonging to 89 populations across the species' range were assessed using 600 base pairs of cytochrome b. Furthermore, nine species belonging to the L. cephalus complex were also analysed (over the whole cytochrome b) in order to test potential allopatric hybridization with L. cephalus sensu stricto (i.e. the chub). Our results show that the chub includes four highly divergent lineages descending from a quick radiation that took place three million years ago. The geographical distribution of these lineages and results of the nested clade analysis indicated that the chub may have originated from Mesopotamia. Chub radiation probably occurred during an important vicariant event such as the isolation of numerous Turkish river syst

SUBMITTER: Durand JD 

PROVIDER: S-EPMC1690721 | biostudies-literature | 2000 Aug

REPOSITORIES: biostudies-literature