The onset of ecological diversification 50 years after colonization of a crater lake by haplochromine cichlid fishes.

ABSTRACT: Adaptive radiation research typically relies on the study of evolution in retrospective, leaving the predictive value of the concept hard to evaluate. Several radiations, including the cichlid fishes in the East African Great Lakes, have been studied extensively, yet no study has investigated the onset of the intraspecific processes of niche expansion and differentiation shortly after colonization of an adaptive zone by cichlids. Haplochromine cichlids of one of the two lineages that seeded the Lake Victoria radiation recently arrived in Lake Chala, a lake perfectly suited for within-lake cichlid speciation. Here, we infer the colonization and demographic history, quantify phenotypic, ecological and genomic diversity and diversification, and investigate the selection regime to ask if the p

SUBMITTER: Moser FN 

PROVIDER: S-EPMC6111161 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature