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

Karen Martien, Susan Chivers, Robin Baird, Frederick Archer, Antoinette Gorgone, Brittany Hancock-Hanser, David Mattila, Daniel McSweeney, Erin Oleson, Carol Palmer, Victoria Pease, Kelly Robertson, Gregory Schorr, Mark Schultz, Daniel Webster, Barbara Taylor

    Research output: Contribution to journalArticleResearchpeer-review

    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.
    Original languageEnglish
    Pages (from-to)611-626
    Number of pages16
    JournalJournal of Heredity
    Volume105
    Issue number5
    DOIs
    Publication statusPublished - 1 Sep 2014

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    Dolphins
    Islands
    Population
    Mitochondrial DNA
    Gene Flow
    Haplotypes
    Water
    DNA
    Microsatellite Repeats
    History
    Genotype

    Cite this

    Martien, K., Chivers, S., Baird, R., Archer, F., Gorgone, A., Hancock-Hanser, B., ... Taylor, B. (2014). Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens). Journal of Heredity, 105(5), 611-626. https://doi.org/10.1093/jhered/esu029
    Martien, Karen ; Chivers, Susan ; Baird, Robin ; Archer, Frederick ; Gorgone, Antoinette ; Hancock-Hanser, Brittany ; Mattila, David ; McSweeney, Daniel ; Oleson, Erin ; Palmer, Carol ; Pease, Victoria ; Robertson, Kelly ; Schorr, Gregory ; Schultz, Mark ; Webster, Daniel ; Taylor, Barbara. / Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens). In: Journal of Heredity. 2014 ; Vol. 105, No. 5. pp. 611-626.
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    title = "Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)",
    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.",
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    author = "Karen Martien and Susan Chivers and Robin Baird and Frederick Archer and Antoinette Gorgone and Brittany Hancock-Hanser and David Mattila and Daniel McSweeney and Erin Oleson and Carol Palmer and Victoria Pease and Kelly Robertson and Gregory Schorr and Mark Schultz and Daniel Webster and Barbara Taylor",
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    Martien, K, Chivers, S, Baird, R, Archer, F, Gorgone, A, Hancock-Hanser, B, Mattila, D, McSweeney, D, Oleson, E, Palmer, C, Pease, V, Robertson, K, Schorr, G, Schultz, M, Webster, D & Taylor, B 2014, 'Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)', Journal of Heredity, vol. 105, no. 5, pp. 611-626. https://doi.org/10.1093/jhered/esu029

    Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens). / Martien, Karen; Chivers, Susan; Baird, Robin; Archer, Frederick; Gorgone, Antoinette; Hancock-Hanser, Brittany; Mattila, David; McSweeney, Daniel; Oleson, Erin; Palmer, Carol; Pease, Victoria; Robertson, Kelly; Schorr, Gregory; Schultz, Mark; Webster, Daniel; Taylor, Barbara.

    In: Journal of Heredity, Vol. 105, No. 5, 01.09.2014, p. 611-626.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)

    AU - Martien, Karen

    AU - Chivers, Susan

    AU - Baird, Robin

    AU - Archer, Frederick

    AU - Gorgone, Antoinette

    AU - Hancock-Hanser, Brittany

    AU - Mattila, David

    AU - McSweeney, Daniel

    AU - Oleson, Erin

    AU - Palmer, Carol

    AU - Pease, Victoria

    AU - Robertson, Kelly

    AU - Schorr, Gregory

    AU - Schultz, Mark

    AU - Webster, Daniel

    AU - Taylor, Barbara

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    N2 - 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.

    AB - 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.

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    KW - DNA sequence

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    KW - gene flow

    KW - gene locus

    KW - genetic variability

    KW - genetics

    KW - haplotype

    KW - multigene family

    KW - phylogeography

    KW - population genetics

    KW - United States

    KW - Alleles

    KW - Animals

    KW - DNA, Mitochondrial

    KW - Dolphins

    KW - Gene Flow

    KW - Genetic Loci

    KW - Genetic Variation

    KW - Genetics, Population

    KW - Haplotypes

    KW - Hawaii

    KW - Microsatellite Repeats

    KW - Multigene Family

    KW - Phylogeography

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