Genetic differentiation among North Atlantic killer whale populations

Andrew D. Foote, Julia T. Vilstrup, Renaud de Stephanis, Philippe Verborgh, Sandra C. Abel Nielsen, Robert Deaville, Lars Kleivane, Vidal Martin, Patrick J. O. Miller, Nils Oien, Monica Perez-Gil, Morten Rasmussen, Robert J. Reid, Kelly M. Robertson, Emer Rogan, Tiu Similae, Maria L. Tejedor, Heike Vester, Gisli A. Vikingsson, Eske Willerslev & 2 others M. Thomas P. Gilbert, Stuart B. Piertney

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Population genetic structure of North Atlantic killer whale samples was resolved from differences in allele frequencies of 17 microsatellite loci, mtDNA control region haplotype frequencies and for a subset of samples, using complete mitogenome sequences. Three significantly differentiated populations were identified. Differentiation based on microsatellite allele frequencies was greater between the two allopatric populations than between the two pairs of partially sympatric populations. Spatial clustering of individuals within each of these populations overlaps with the distribution of particular prey resources: herring, mackerel and tuna, which each population has been seen predating. Phylogenetic analyses using complete mitogenomes suggested two populations could have resulted from single founding events and subsequent matrilineal expansion. The third population, which was sampled at lower latitudes and lower density, consisted of maternal lineages from three highly divergent clades. Pairwise population differentiation was greater for estimates based on mtDNA control region haplotype frequencies than for estimates based on microsatellite allele frequencies, and there were no mitogenome haplotypes shared among populations. This suggests low or no female migration and that gene flow was primarily male mediated when populations spatially and temporally overlap. These results demonstrate that genetic differentiation can arise through resource specialization in the absence of physical barriers to gene flow.

Original languageEnglish
Pages (from-to)629-641
Number of pages13
JournalMolecular Ecology
Volume20
Issue number3
DOIs
Publication statusPublished - Feb 2011

Keywords

  • behaviour
  • social evolution
  • ecological genetics
  • population ecology
  • population genetics-empirical
  • predator-prey interactions
  • dolphins tursiops-truncatus
  • multilocus genotype data
  • bottle-nosed-dolphin
  • Orcinus-orca
  • bluefin tuna
  • microsatellite markers
  • cetacean populations
  • maximum-likelihood
  • Mediterranean Sea
  • mitochondrial

Cite this

Foote, A. D., Vilstrup, J. T., de Stephanis, R., Verborgh, P., Nielsen, S. C. A., Deaville, R., ... Piertney, S. B. (2011). Genetic differentiation among North Atlantic killer whale populations. Molecular Ecology, 20(3), 629-641. https://doi.org/10.1111/j.1365-294X.2010.04957.x

Genetic differentiation among North Atlantic killer whale populations. / Foote, Andrew D.; Vilstrup, Julia T.; de Stephanis, Renaud; Verborgh, Philippe; Nielsen, Sandra C. Abel; Deaville, Robert; Kleivane, Lars; Martin, Vidal; Miller, Patrick J. O.; Oien, Nils; Perez-Gil, Monica; Rasmussen, Morten; Reid, Robert J.; Robertson, Kelly M.; Rogan, Emer; Similae, Tiu; Tejedor, Maria L.; Vester, Heike; Vikingsson, Gisli A.; Willerslev, Eske; Gilbert, M. Thomas P.; Piertney, Stuart B.

In: Molecular Ecology, Vol. 20, No. 3, 02.2011, p. 629-641.

Research output: Contribution to journalArticle

Foote, AD, Vilstrup, JT, de Stephanis, R, Verborgh, P, Nielsen, SCA, Deaville, R, Kleivane, L, Martin, V, Miller, PJO, Oien, N, Perez-Gil, M, Rasmussen, M, Reid, RJ, Robertson, KM, Rogan, E, Similae, T, Tejedor, ML, Vester, H, Vikingsson, GA, Willerslev, E, Gilbert, MTP & Piertney, SB 2011, 'Genetic differentiation among North Atlantic killer whale populations' Molecular Ecology, vol. 20, no. 3, pp. 629-641. https://doi.org/10.1111/j.1365-294X.2010.04957.x
Foote AD, Vilstrup JT, de Stephanis R, Verborgh P, Nielsen SCA, Deaville R et al. Genetic differentiation among North Atlantic killer whale populations. Molecular Ecology. 2011 Feb;20(3):629-641. https://doi.org/10.1111/j.1365-294X.2010.04957.x
Foote, Andrew D. ; Vilstrup, Julia T. ; de Stephanis, Renaud ; Verborgh, Philippe ; Nielsen, Sandra C. Abel ; Deaville, Robert ; Kleivane, Lars ; Martin, Vidal ; Miller, Patrick J. O. ; Oien, Nils ; Perez-Gil, Monica ; Rasmussen, Morten ; Reid, Robert J. ; Robertson, Kelly M. ; Rogan, Emer ; Similae, Tiu ; Tejedor, Maria L. ; Vester, Heike ; Vikingsson, Gisli A. ; Willerslev, Eske ; Gilbert, M. Thomas P. ; Piertney, Stuart B. / Genetic differentiation among North Atlantic killer whale populations. In: Molecular Ecology. 2011 ; Vol. 20, No. 3. pp. 629-641.
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AU - Deaville, Robert

AU - Kleivane, Lars

AU - Martin, Vidal

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AU - Rasmussen, Morten

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AU - Robertson, Kelly M.

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AU - Similae, Tiu

AU - Tejedor, Maria L.

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N2 - Population genetic structure of North Atlantic killer whale samples was resolved from differences in allele frequencies of 17 microsatellite loci, mtDNA control region haplotype frequencies and for a subset of samples, using complete mitogenome sequences. Three significantly differentiated populations were identified. Differentiation based on microsatellite allele frequencies was greater between the two allopatric populations than between the two pairs of partially sympatric populations. Spatial clustering of individuals within each of these populations overlaps with the distribution of particular prey resources: herring, mackerel and tuna, which each population has been seen predating. Phylogenetic analyses using complete mitogenomes suggested two populations could have resulted from single founding events and subsequent matrilineal expansion. The third population, which was sampled at lower latitudes and lower density, consisted of maternal lineages from three highly divergent clades. Pairwise population differentiation was greater for estimates based on mtDNA control region haplotype frequencies than for estimates based on microsatellite allele frequencies, and there were no mitogenome haplotypes shared among populations. This suggests low or no female migration and that gene flow was primarily male mediated when populations spatially and temporally overlap. These results demonstrate that genetic differentiation can arise through resource specialization in the absence of physical barriers to gene flow.

AB - Population genetic structure of North Atlantic killer whale samples was resolved from differences in allele frequencies of 17 microsatellite loci, mtDNA control region haplotype frequencies and for a subset of samples, using complete mitogenome sequences. Three significantly differentiated populations were identified. Differentiation based on microsatellite allele frequencies was greater between the two allopatric populations than between the two pairs of partially sympatric populations. Spatial clustering of individuals within each of these populations overlaps with the distribution of particular prey resources: herring, mackerel and tuna, which each population has been seen predating. Phylogenetic analyses using complete mitogenomes suggested two populations could have resulted from single founding events and subsequent matrilineal expansion. The third population, which was sampled at lower latitudes and lower density, consisted of maternal lineages from three highly divergent clades. Pairwise population differentiation was greater for estimates based on mtDNA control region haplotype frequencies than for estimates based on microsatellite allele frequencies, and there were no mitogenome haplotypes shared among populations. This suggests low or no female migration and that gene flow was primarily male mediated when populations spatially and temporally overlap. These results demonstrate that genetic differentiation can arise through resource specialization in the absence of physical barriers to gene flow.

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KW - social evolution

KW - ecological genetics

KW - population ecology

KW - population genetics-empirical

KW - predator-prey interactions

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KW - multilocus genotype data

KW - bottle-nosed-dolphin

KW - Orcinus-orca

KW - bluefin tuna

KW - microsatellite markers

KW - cetacean populations

KW - maximum-likelihood

KW - Mediterranean Sea

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