Ecological and biogeographic features shaped the complex evolutionary history of an iconic apex predator (Galeocerdo cuvier).

ABSTRACT:

Background

The tiger shark (Galeocerdo cuvier) is a large iconic marine predator inhabiting worldwide tropical and subtropical waters. So far, only mitochondrial markers and microsatellites studies have investigated its worldwide historical demography with inconclusive outcomes. Here, we assessed for the first time the genomic variability of tiger shark based on RAD-seq data for 50 individuals from five sampling sites in the Indo-Pacific (IP) and one in the Atlantic Ocean (AO) to decipher the extent of the species' global connectivity and its demographic history.

Results

Clustering algorithms (PCA and NMF), F_ST and an approximate Bayesian computation framework revealed the presence of two clusters corresponding to the two oceanic basins. By modelling the two-dimen

SUBMITTER: Lesturgie P 

PROVIDER: S-EPMC9758794 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature