Genetic structure and signatures of selection in grey reef sharks (Carcharhinus amblyrhynchos).

ABSTRACT: With overfishing reducing the abundance of marine predators in multiple marine ecosystems, knowledge of genetic structure and local adaptation may provide valuable information to assist sustainable management. Despite recent technological advances, most studies on sharks have used small sets of neutral markers to describe their genetic structure. We used 5517 nuclear single-nucleotide polymorphisms (SNPs) and a mitochondrial DNA (mtDNA) gene to characterize patterns of genetic structure and detect signatures of selection in grey reef sharks (Carcharhinus amblyrhynchos). Using samples from Australia, Indonesia and oceanic reefs in the Indian Ocean, we established that large oceanic distances represent barriers to gene flow, whereas genetic differentiation on continental shelves follows an i

SUBMITTER: Momigliano P 

PROVIDER: S-EPMC5555095 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature