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Killer whale genomes reveal a complex history of recurrent admixture and vicariance

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Killer whale genomes reveal a complex history of recurrent admixture and vicariance. / Foote, Andrew; Martin, Michael D.; Louis, Marie et al.
In: Molecular Ecology, Vol. 28, No. 14, 07.2019, p. 3427-3444.

Research output: Contribution to journal › Article › peer-review

HarvardHarvard

Foote, A, Martin, MD, Louis, M, Pacheco, G, Robertson, K, Sinding, M-H, Amaral, A, Baird, R, Baker, CS, Ballance, L, Barlow, J, Brownlow, A, Collins, T, Constantine, R, Dabin, W, Dalla Rosa, L, Davison, NJ, Durban, J, Esteban, R, Ferguson, SH, Gerrodette, T, Guinet, C, Hanson, MB, Hoggard, W, Matthews, C, Samarra, F, de Stephanis, R, Tavares, S, Tixier, P, Totterdell, J, Wade, P, Excoffier, L, Gilbert, MTP, Wolf, JBW & Morin, PA 2019, 'Killer whale genomes reveal a complex history of recurrent admixture and vicariance', Molecular Ecology, vol. 28, no. 14, pp. 3427-3444. https://doi.org/10.1111/mec.15099

APA

Foote, A., Martin, M. D., Louis, M., Pacheco, G., Robertson, K., Sinding, M.-H., Amaral, A., Baird, R., Baker, C. S., Ballance, L., Barlow, J., Brownlow, A., Collins, T., Constantine, R., Dabin, W., Dalla Rosa, L., Davison, N. J., Durban, J., Esteban, R., ... Morin, P. A. (2019). Killer whale genomes reveal a complex history of recurrent admixture and vicariance. Molecular Ecology, 28(14), 3427-3444. https://doi.org/10.1111/mec.15099

CBE

Foote A, Martin MD, Louis M, Pacheco G, Robertson K, Sinding M-H, Amaral A, Baird R, Baker CS, Ballance L, et al. 2019. Killer whale genomes reveal a complex history of recurrent admixture and vicariance. Molecular Ecology. 28(14):3427-3444. https://doi.org/10.1111/mec.15099

MLA

Foote, Andrew et al. "Killer whale genomes reveal a complex history of recurrent admixture and vicariance". Molecular Ecology. 2019, 28(14). 3427-3444. https://doi.org/10.1111/mec.15099

VancouverVancouver

Foote A, Martin MD, Louis M, Pacheco G, Robertson K, Sinding MH et al. Killer whale genomes reveal a complex history of recurrent admixture and vicariance. Molecular Ecology. 2019 Jul;28(14):3427-3444. Epub 2019 May 27. doi: 10.1111/mec.15099

Author

Foote, Andrew ; Martin, Michael D. ; Louis, Marie et al. / Killer whale genomes reveal a complex history of recurrent admixture and vicariance. In: Molecular Ecology. 2019 ; Vol. 28, No. 14. pp. 3427-3444.

RIS

TY - JOUR

T1 - Killer whale genomes reveal a complex history of recurrent admixture and vicariance

AU - Foote, Andrew

AU - Martin, Michael D.

AU - Louis, Marie

AU - Pacheco, George

AU - Robertson, Kelly

AU - Sinding, Mikkel-Holger

AU - Amaral, Ana

AU - Baird, Robin

AU - Baker, C. Scott

AU - Ballance, Lisa

AU - Barlow, Jay

AU - Brownlow, Andrew

AU - Collins, Tim

AU - Constantine, Rochelle

AU - Dabin, Willy

AU - Dalla Rosa, Luciano

AU - Davison, Nicholas J

AU - Durban, John

AU - Esteban, Ruth

AU - Ferguson, Steven H

AU - Gerrodette, Tim

AU - Guinet, Christophe

AU - Hanson, M. Bradley

AU - Hoggard, Wayne

AU - Matthews, Cory

AU - Samarra, Filipa

AU - de Stephanis, Renaud

AU - Tavares, Sara

AU - Tixier, Paul

AU - Totterdell, John

AU - Wade, Paul

AU - Excoffier, Laurent

AU - Gilbert, M. Thomas P.

AU - Wolf, Jochen B. W.

AU - Morin, Phillip A.

PY - 2019/7

Y1 - 2019/7

N2 - Reconstruction of the demographic and evolutionary history of populations assuming a consensus tree-like relationship can mask more complex scenarios, which are prevalent in nature. An emerging genomic toolset, which has been most comprehensively harnessed in the reconstruction of human evolutionary history, enables molecular ecologists to elucidate complex population histories. Killer whales have limited extrinsic barriers to dispersal and have radiated globally, and are therefore a good candidate model for the application of such tools. Here, we analyse a global dataset of killer whale genomes in a rare attempt to elucidate global population structure in a non-human species. We identify a pattern of genetic homogenisation at lower latitudes and the greatest differentiation at high latitudes, even between currently sympatric lineages. The processes underlying the major axis of structure include high drift at the edge of species’ range, likely associated with founder effects and allelic surfing during post-glacial range expansion. Divergence between Antarctic and non-Antarctic lineages is further driven by ancestry segments with up to four-fold older coalescence time than the genome-wide average; relicts of a previous vicariance during an earlier glacial cycle. Our study further underpins that episodic gene flow is ubiquitous in natural populations, and can occur across great distances and after substantial periods of isolation between populations. Thus, understanding the evolutionary history of a species requires comprehensive geographic sampling and genome-wide data to sample the variation in ancestry within individuals

AB - Reconstruction of the demographic and evolutionary history of populations assuming a consensus tree-like relationship can mask more complex scenarios, which are prevalent in nature. An emerging genomic toolset, which has been most comprehensively harnessed in the reconstruction of human evolutionary history, enables molecular ecologists to elucidate complex population histories. Killer whales have limited extrinsic barriers to dispersal and have radiated globally, and are therefore a good candidate model for the application of such tools. Here, we analyse a global dataset of killer whale genomes in a rare attempt to elucidate global population structure in a non-human species. We identify a pattern of genetic homogenisation at lower latitudes and the greatest differentiation at high latitudes, even between currently sympatric lineages. The processes underlying the major axis of structure include high drift at the edge of species’ range, likely associated with founder effects and allelic surfing during post-glacial range expansion. Divergence between Antarctic and non-Antarctic lineages is further driven by ancestry segments with up to four-fold older coalescence time than the genome-wide average; relicts of a previous vicariance during an earlier glacial cycle. Our study further underpins that episodic gene flow is ubiquitous in natural populations, and can occur across great distances and after substantial periods of isolation between populations. Thus, understanding the evolutionary history of a species requires comprehensive geographic sampling and genome-wide data to sample the variation in ancestry within individuals

U2 - 10.1111/mec.15099

DO - 10.1111/mec.15099

M3 - Article

VL - 28

SP - 3427

EP - 3444

JO - Molecular Ecology

JF - Molecular Ecology

SN - 0962-1083

IS - 14

ER -