Marine Biology

, Volume 160, Issue 5, pp 1285–1296

Global population divergence of the sea star Hippasteria phrygiana corresponds to the onset of the last glacial period of the Pleistocene

  • D. W. Foltz
  • S. D. Fatland
  • M. Eléaume
  • K. Markello
  • K. L. Howell
  • K. Neill
  • C. L. Mah
Original Paper

DOI: 10.1007/s00227-013-2180-1

Cite this article as:
Foltz, D.W., Fatland, S.D., Eléaume, M. et al. Mar Biol (2013) 160: 1285. doi:10.1007/s00227-013-2180-1

Abstract

Genetic structure and connectivity of populations of the globally distributed and eurybathic sea star Hippasteria phrygiana (Parelius 1768) were studied in 165 individuals sampled from three oceanic regions: the North Pacific Ocean, the South Pacific Ocean (considered to include the adjacent regions of the Southern Ocean and the southern Indian Ocean) and the North Atlantic Ocean. A nuclear gene region (ATP synthase subunit α intron #5, ATPSα) and a mitochondrial gene region (cytochrome oxidase subunit I, COI) were amplified and sequenced. Significant heterogeneity was detected in an AMOVA analysis among the three sampled oceanic regions for COI, but not for ATPSα. Neither gene showed significant genetic heterogeneity within the North Atlantic, as assessed by ΦST values. Significant heterogeneity was detected for COI (but not ATPSα) in the North Pacific, but the converse was true in the South Pacific. Coalescent simulations suggested that the three regions have been diverging with little or no gene flow for the past 50–75,000 years, a time frame that corresponds to the onset of the last glacial period of the Pleistocene. A possible genetic signature of recent population expansion (or non-neutrality) was detected for each gene in the North Pacific, but not in the other two oceanic regions.

Supplementary material

227_2013_2180_MOESM1_ESM.xlsx (25 kb)
Supplementary material 1 (XLSX 25 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • D. W. Foltz
    • 1
  • S. D. Fatland
    • 1
  • M. Eléaume
    • 2
  • K. Markello
    • 3
  • K. L. Howell
    • 4
  • K. Neill
    • 5
  • C. L. Mah
    • 1
    • 6
  1. 1.Department of Biological SciencesLouisiana State UniversityBaton RougeUSA
  2. 2.Département Peuplement et Milieux AquatiquesMuséum national d’Histoire naturelleParis Cedex 05France
  3. 3.Department of Invertebrate Zoology and GeologyCalifornia Academy of SciencesSan FranciscoUSA
  4. 4.Marine Biology and Ecology Research Centre, Marine InstituteUniversity of PlymouthPlymouthUK
  5. 5.National Institute of Water and Atmospheric ResearchKilbirnie, WellingtonNew Zealand
  6. 6.Department of Invertebrate ZoologyNational Museum of Natural HistoryWashingtonUSA