Post-glacial habitat release and incipient speciation in the genus Delphinus.

ABSTRACT: The role of ecological and changing environmental factors in the radiation of species diversity is a fundamental question in evolutionary biology. Of particular interest is the potential for these factors to determine the boundary between what we would consider differentiation among populations and incipient speciation. Dolphins in the genus Delphinus provide a useful test case, exhibiting morphological variation in beak length, coloration and body size across their wide geographic distribution, and in particular among coastal and more pelagic habitats. Two species have been proposed, D. delphis and D. capensis, but morphologically similar allopatric populations are not monophyletic, indicating that the mostly coastal 'long-beaked' D. capensis form is not a single globally distributed spec

SUBMITTER: Segura-Garcia I 

PROVIDER: S-EPMC5117844 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature