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Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)

Martien, Karen K., Chivers, Susan J., Baird, Robin W., Archer, Frederick I., Gorgone, Antoinette M., Hancock-Hanser, Brittany L., Mattila, David, McSweeney, Daniel J., Oleson, Erin M., Palmer, Carol, Pease, Victoria L., Robertson, Kelly M., Schorr, Gregory S., Schultz, Mark B., Webster, Daniel L. and Taylor, Barbara L. (2014). Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens). Journal of Heredity,105(5):611-626.

Document type: Journal Article
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IRMA ID 75039815xPUB310
Title Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)
Author Martien, Karen K.
Chivers, Susan J.
Baird, Robin W.
Archer, Frederick I.
Gorgone, Antoinette M.
Hancock-Hanser, Brittany L.
Mattila, David
McSweeney, Daniel J.
Oleson, Erin M.
Palmer, Carol
Pease, Victoria L.
Robertson, Kelly M.
Schorr, Gregory S.
Schultz, Mark B.
Webster, Daniel L.
Taylor, Barbara L.
Journal Name Journal of Heredity
Publication Date 2014
Volume Number 105
Issue Number 5
ISSN 0022-1503   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84906809505
Start Page 611
End Page 626
Total Pages 16
Place of Publication United Kingdom
Publisher Oxford University Press
HERDC Category C1 - Journal Article (DIISR)
Abstract False killer whales (Pseudorca crassidens) are large delphinids typically found in deep water far offshore. However, in the Hawaiian Archipelago, there are 2 resident island-associated populations of false killer whales, one in the waters around the main Hawaiian Islands (MHI) and one in the waters around the Northwestern Hawaiian Islands (NWHI). We use mitochondrial DNA (mtDNA) control region sequences and genotypes from 16 nuclear DNA (nucDNA) microsatellite loci from 206 individuals to examine levels of differentiation among the 2 island-associated populations and offshore animals from the central and eastern North Pacific. Both mtDNA and nucDNA exhibit highly significant differentiation between populations, confirming limited gene flow in both sexes. The mtDNA haplotypes exhibit a strong pattern of phylogeographic concordance, with island-associated populations sharing 3 closely related haplotypes not found elsewhere in the Pacific. However, nucDNA data suggest that NWHI animals are at least as differentiated from MHI animals as they are from offshore animals. The patterns of differentiation revealed by the 2 marker types suggest that the island-associated false killer whale populations likely share a common colonization history, but have limited contemporary gene flow.
Keywords cetacean
male-mediated gene flow
population structure
social structure
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