Like a rolling stone: Colonization and migration dynamics of the gray reef shark (Carcharhinus amblyrhynchos).

ABSTRACT: Designing appropriate management plans requires knowledge of both the dispersal ability and what has shaped the current distribution of the species under consideration. Here, we investigated the evolutionary history of the endangered gray reef shark (Carcharhinus amblyrhynchos) across its range by sequencing thousands of RADseq loci in 173 individuals in the Indo-Pacific (IP). We first bring evidence of the occurrence of a range expansion (RE) originating close to the Indo-Australian Archipelago (IAA) where two stepping-stone waves (east and westward) colonized almost the entire IP. Coalescent modeling additionally highlighted a homogenous connectivity (Nm ~ 10 per generation) throughout the range, and isolation by distance model suggested the absence of barriers to dispersal

SUBMITTER: Lesturgie P 

PROVIDER: S-EPMC9831972 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature