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

Andrew D. Foote; Michael D. Martin; Marie Louis; George Pacheco; Kelly M. Robertson; Mikkel‐Holger S. Sinding; Ana R. Amaral; Robin W. Baird; Charles Scott Baker; Lisa Ballance; Jay Barlow; Andrew Brownlow; Tim Collins; Rochelle Constantine; Willy Dabin; Luciano Dalla Rosa; Nicholas J. Davison; John W. Durban; Ruth Esteban; Steven H. Ferguson; Tim Gerrodette; Christophe Guinet; M. Bradley Hanson; Wayne Hoggard; Cory J. D. Matthews; Filipa I. P. Samarra; Renaud de Stephanis; Sara B. Tavares; Paul Tixier; John A. Totterdell; Paul Wade; Laurent Excoffier; M. Thomas P. Gilbert; Jochen B. W. Wolf; Phillip A. Morin

doi:10.1111/mec.15099

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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

Andrew D. Foote, Michael D. Martin, Marie Louis, George Pacheco, Kelly M. Robertson, Mikkel‐Holger S. Sinding, Ana R. Amaral, Robin W. Baird, Charles Scott Baker, Lisa Ballance, …

Molecular ecology, Vol.28(14), pp.3427-3444

07/2019

DOI: https://doi.org/10.1111/mec.15099

PMID: 31131963

Résumé

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 data set of killer whale genomes in a rare attempt to elucidate global population structure in a nonhuman 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 postglacial 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. see also the Perspective by Jacobs and Therkildsen

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Titre: Killer whale genomes reveal a complex history of recurrent admixture and vicariance
Créateurs - sans rôle: Andrew D. Foote - CMPG, Institute of Ecology and Evolution University of Bern Bern Switzerland
Michael D. Martin - NTNU University Museum Trondheim Norway
Marie Louis - Department of Biology, Section for Evolutionary Genomics University of Copenhagen Copenhagen Denmark, Scottish Oceans Institute, East Sands University of St. Andrews St. Andrews UK
George Pacheco - Department of Biology, Section for Evolutionary Genomics University of Copenhagen Copenhagen Denmark
Kelly M. Robertson - Marine Mammal and Turtle Division, National Marine Fisheries Service, National Oceanographic and Atmospheric Administration Southwest Fisheries Science Center La Jolla California
Mikkel‐Holger S. Sinding - Department of Biology, Section for Evolutionary Genomics University of Copenhagen Copenhagen Denmark, Greenland Institute of Natural Resources Nuuk Greenland
Ana R. Amaral - American Museum of Natural History New York City New York, Faculdade de Ciências Universidade de Lisboa Centre for Ecology, Evolution and Environmental Changes Lisboa Portugal
Robin W. Baird - Cascadia Research Olympia Washington
Charles Scott Baker - Department of Fisheries and Wildlife, Marine Mammal Institute Oregon State University Newport Oregon, School of Biological Sciences University of Auckland Auckland New Zealand
Lisa Ballance - National Oceanic and Atmospheric Administration
Jay Barlow - National Oceanic and Atmospheric Administration
Andrew Brownlow - Scottish Marine Animal Stranding Scheme SRUC Veterinary Services Drummondhill Inverness UK
Tim Collins - Ocean Giants Program Wildlife Conservation Society New York City New York
Rochelle Constantine - University of Auckland
Willy Dabin - Observatoire Pelagis Université de La Rochelle‐CNRS La Rochelle France
Luciano Dalla Rosa - Laboratório de Ecologia e Conservação da Megafauna Marinha, Instituto de Oceanografia Universidade Federal do Rio Grande Rio Grande Brazil
Nicholas J. Davison - Scottish Marine Animal Stranding Scheme SRUC Veterinary Services Drummondhill Inverness UK
John W. Durban - National Oceanic and Atmospheric Administration
Ruth Esteban - CIRCE Conservation, Information and Research on Cetaceans Algeciras Spain
Steven H. Ferguson - Fisheries & Oceans Canada Winnipeg Manitoba Canada
Tim Gerrodette - National Oceanic and Atmospheric Administration
Christophe Guinet - Centre d'Etudes Biologiques de Chizé
M. Bradley Hanson - National Oceanic and Atmospheric Administration
Wayne Hoggard - National Marine Fisheries Service, NOAA Southeast Fisheries Science Center Pascagoula Mississippi
Cory J. D. Matthews - Fisheries & Oceans Canada Winnipeg Manitoba Canada
Filipa I. P. Samarra - Marine and Freshwater Research Institute
Renaud de Stephanis - CIRCE Conservation, Information and Research on Cetaceans Algeciras Spain
Sara B. Tavares - University of St Andrews
Paul Tixier - Centre d'Etudes Biologiques de Chizé (CEBC), CNRS‐ULR UMR Chizé France, School of Life and Environmental Sciences (Burwood Campus) Deakin University Geelong Victoria Australia
John A. Totterdell - Marine Information and Research Group–Australia (MIRG) Quinns Rocks Western Australia Australia
Paul Wade - National Oceanic and Atmospheric Administration
Laurent Excoffier - University of Bern
M. Thomas P. Gilbert - NTNU University Museum Trondheim Norway, Department of Biology, Section for Evolutionary Genomics University of Copenhagen Copenhagen Denmark
Jochen B. W. Wolf - Division of Evolutionary Biology, Faculty of Biology LMU Munich Planegg‐Martinsried Germany, Department of Evolutionary Biology, Science of Life Laboratory Uppsala University Uppsala Sweden
Phillip A. Morin - Marine Mammal and Turtle Division, National Marine Fisheries Service, National Oceanographic and Atmospheric Administration Southwest Fisheries Science Center La Jolla California
Détails de publication: Molecular ecology, Vol.28(14), pp.3427-3444
Nombre de pages: 18
Identifiants: 99158502809311
Unité académique: MARine Biodiversity, Exploitation & Conservation - MARBEC
Langue: English
Type de ressource: Journal article