Rapid generation of ecologically relevant behavioral novelty in experimental cichlid hybrids.

ABSTRACT: The East African cichlid radiations are characterized by repeated and rapid diversification into many distinct species with different ecological specializations and by a history of hybridization events between nonsister species. Such hybridization might provide important fuel for adaptive radiation. Interspecific hybrids can have extreme trait values or novel trait combinations and such transgressive phenotypes may allow some hybrids to explore ecological niches neither of the parental species could tap into. Here, we investigate the potential of second-generation (F2) hybrids between two generalist cichlid species from Lake Malawi to exploit a resource neither parental species is specialized on: feeding by sifting sand. Some of the F2 hybrids phenotypically resembled fish of species that

SUBMITTER: Feller AF 

PROVIDER: S-EPMC7391563 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature