Variations on a theme: Genomics of sex determination in the cichlid fish Astatotilapia burtoni.

ABSTRACT:

Background

Sex chromosomes change more frequently in fish than in mammals or birds. However, certain chromosomes or genes are repeatedly used as sex determinants in different members of the teleostean lineage. East African cichlids are an enigmatic model system in evolutionary biology representing some of the most diverse extant vertebrate adaptive radiations. How sex is determined and if different sex-determining mechanisms contribute to speciation is unknown for almost all of the over 1,500 cichlid species of the Great Lakes. Here, we investigated the genetic basis of sex determination in a cichlid from Lake Tanganyika, Astatotilapia burtoni, a member of the most species-rich cichlid lineage, the haplochromines.

Results

We used RAD-sequencing of crosses for two populations

SUBMITTER: Bohne A 

PROVIDER: S-EPMC5100337 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature