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Published October 1, 2018 | Version v1
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Data from: Comparative population genomics reveals key barriers to dispersal in Southern Ocean penguins

Authors/Creators

  • 1. University of Southampton
  • 2. Loyola University Chicago
  • 3. University of Oxford
  • 4. Nelson Mandela University
  • 5. Australian Antarctic Division
  • 6. Natural Environment Research Council
  • 7. University of Tasmania
  • 8. Louisiana State University of Alexandria
  • 9. Macquarie University
  • 10. Falklands Conservation; Stanley Falkland Islands*
  • 11. British Antarctic Survey
  • 12. University of Western Australia

Description

The mechanisms that determine patterns of species dispersal are important factors in the production and maintenance of biodiversity. Understanding these mechanisms helps to forecast the responses of species to environmental change. Here we used a comparative framework and genome-wide data obtained through RAD-seq to compare the patterns of connectivity among breeding colonies for five penguin species with shared ancestry, overlapping distributions, and differing ecological niches, allowing an examination of the intrinsic and extrinsic barriers governing dispersal patterns. Our findings show that at-sea range and oceanography underlie patterns of dispersal in these penguins. The pelagic niche of emperor (Aptenodytes forsteri), king (A. patagonicus), Adélie (Pygoscelis adeliae) and chinstrap (P. antarctica) penguins facilitates gene flow over thousands of kilometres. In contrast, the coastal niche of gentoo penguins (P. papua) limits dispersal, resulting in population divergences. Oceanographic fronts also act as dispersal barriers to some extent. We recommend that forecasts of extinction risk incorporate dispersal and that management units are defined by at-sea range and oceanography in species lacking genetic data.

Notes

Adelie penguins - VCF of SNP dataset
Adelie.vcf
Chinstrap penguins - VCF of SNP dataset
Chinstrap.vcf
Gentoo penguins - VCF of full SNP dataset
includes outlier loci
Gentoos_all-SNPs.vcf
Gentoo penguins - VCF of neutral SNP dataset
outlier loci removed
Gentoos_neutral-SNPs.vcf
Gentoo penguins - nexus file for BFD*
Input file of SNPs for BFD* species delimitation
Gentoos_input_for_BFD.nex
Gentoo penguins - phylip file for RAxML
Phylip alignment of SNPs for phylogenetic inference in RAxML
Gentoos_input_for_RAxML.phy
Gentoos_input_for_SNAPP_set1
XML input file for SNAPP analysis of gentoo penguins - set 1
Gentoos_input_for_SNAPP_set2
XML input file for SNAPP analysis - set 2

Files

Gentoos_input_for_SNAPP_set1.xml

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Additional details

Related works

Is cited by
10.1111/mec.14896 (DOI)