Genomic islands of divergence in the Yellow Tang and the Brushtail Tang Surgeonfishes.

ABSTRACT: The current ease of obtaining thousands of molecular markers challenges the notion that full phylogenetic concordance, as proposed by phylogenetic species concepts, is a requirement for defining species delimitations. Indeed, the presence of genomic islands of divergence, which may be the cause, or in some cases the consequence, of speciation, precludes concordance. Here, we explore this issue using thousands of RAD markers on two sister species of surgeonfishes (Teleostei: Acanthuridae), Zebrasoma flavescens and Z. scopas, and several populations within each species. Species are readily distinguished based on their colors (solid yellow and solid brown, respectively), yet populations and species are neither distinguishable using mitochondrial markers (cytochrome c oxidase 1),

SUBMITTER: Bernardi G 

PROVIDER: S-EPMC6157655 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature