Data from: Contemporary population structure and post-glacial genetic demography in a migratory marine species, the blacknose shark, Carcharhinus acronotus ...

• Main Authors: Portnoy, David, Hollenbeck, Christopher, Belcher, Carolyn, Driggers III, William, Frazier, Bryan, Gelsleichter, Jim, Grubbs, R. D., Gold, John, Portnoy, D. S., Hollenbeck, C. M., Gold, J. R., Belcher, C. N., Frazier, B. S., Driggers, W. B.
• Format: Dataset
• Language: English
• Published: Dryad 2014
• Subjects: glacial refugia; elasmobranchs; Carcharhinus acronotus; North Atlantic
• Online Access: https://dx.doi.org/10.5061/dryad.vv277; https://datadryad.org/stash/dataset/doi:10.5061/dryad.vv277

Patterns of population structure and historical genetic demography of blacknose sharks in the western North Atlantic Ocean were assessed using variation in nuclear-encoded microsatellites and sequences of mitochondrial (mt)DNA. Significant heterogeneity and/or inferred barriers to gene flow, based on microsatellites and/or mtDNA, revealed the occurrence of five genetic populations localized to five geographic regions: the southeastern U.S Atlantic coast, the eastern Gulf of Mexico, the western Gulf of Mexico, Campeche Bay in the southern Gulf of Mexico, and the Bahamas. Pairwise estimates of genetic divergence between sharks in the Bahamas and those in all other localities were more than an order of magnitude higher than between pairwise comparisons involving the other localities. Demographic modelling indicated that sharks in all five regions diverged after the last glacial maximum and, except for the Bahamas, experienced post-glacial, population expansion. The patterns of genetic variation also suggest ... : mtDNA haplotypesHaplotypes.txtFull data, blacknose sharkLocations, mtdNA haplotypes and microsatellite genotypesMicrosatellite genotypes of blacknose sharks.xlsx ...