Genomics of Rapid Incipient Speciation in Sympatric Threespine Stickleback.

ABSTRACT: Ecological speciation is the process by which reproductively isolated populations emerge as a consequence of divergent natural or ecologically-mediated sexual selection. Most genomic studies of ecological speciation have investigated allopatric populations, making it difficult to infer reproductive isolation. The few studies on sympatric ecotypes have focused on advanced stages of the speciation process after thousands of generations of divergence. As a consequence, we still do not know what genomic signatures of the early onset of ecological speciation look like. Here, we examined genomic differentiation among migratory lake and resident stream ecotypes of threespine stickleback reproducing in sympatry in one stream, and in parapatry in another stream. Importantly, these ecotypes started

SUBMITTER: Marques DA 

PROVIDER: S-EPMC4771382 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature