Data from: Selection and sex-biased dispersal in a coastal shark: the influence of philopatry on adaptive variation

  • D.S. Portnoy (Contributor)
  • J.B. Puritz (Contributor)
  • C.M. Hollenbeck (Contributor)
  • James J. Gelsleichter (Contributor)
  • D. Chapman (Stony Brook University) (Contributor)
  • J.R. Gold (Contributor)

Dataset

Description

Sex-biased dispersal is expected to homogenize nuclear genetic variation relative to variation in genetic material inherited through the philopatric sex. When site fidelity occurs across a heterogeneous environment, local selective regimes may alter this pattern. We assessed spatial patterns of variation in nuclear-encoded, single nucleotide polymorphisms (SNPs) and sequences of the mitochondrial control region in bonnethead sharks (Sphyrna tiburo), a species thought to exhibit female philopatry, collected from summer habitats used for gestation. Geographic patterns of mtDNA haplotypes and putatively neutral SNPs confirmed female philopatry and male-mediated gene flow along the northeastern coast of the Gulf of Mexico. A total of 30 outlier SNP loci were identified; alleles at over half of these loci exhibited signatures of latitude-associated selection. Our results indicate that in species with sex-biased dispersal, philopatry can facilitate sorting of locally adaptive variation, with the dispersing sex facilitating movement of potentially adaptive variation among locations and environments.
Date made availableOct 29 2015
PublisherZENODO

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