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The Legacy of Recurrent Introgression during the Radiation of Hares

Ferreira, Mafalda S (författare)
CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal;Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal;Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America
Jones, Matthew R (författare)
Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America
Callahan, Colin M (författare)
Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America
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Farelo, Liliana (författare)
CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
Tolesa, Zelalem (författare)
Department of Biology, Hawassa University, Hawassa, Ethiopia
Suchentrunk, Franz (författare)
Department for Interdisciplinary Life Sciences, Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Vienna, Austria
Boursot, Pierre (författare)
Institut des Sciences de l’Évolution Montpellier (ISEM), Université de Montpellier, CNRS, IRD, EPHE, France
Mills, L Scott (författare)
Wildlife Biology Program, College of Forestry and Conservation, University of Montana, Missoula, Montana, United States of America;Office of Research and Creative Scholarship, University of Montana, Missoula, Montana, United States of America; Jeffrey M. Good and José Melo-Ferreira shared the senior authorship
Alves, Paulo C (författare)
CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal;Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal;Wildlife Biology Program, College of Forestry and Conservation, University of Montana, Missoula, Montana, United States of America
Good, Jeffrey M (författare)
Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America;Wildlife Biology Program, College of Forestry and Conservation, University of Montana, Missoula, Montana, United States of America
Melo-Ferreira, José (författare)
CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal;Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
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 (creator_code:org_t)
2020-12-02
2020
Engelska.
Ingår i: Systematic Biology. - : Oxford University Press (OUP). - 1063-5157 .- 1076-836X. ; 70:3, s. 593-607
Relaterad länk:
https://academic.oup...
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https://urn.kb.se/re...
https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Hybridization may often be an important source of adaptive variation, but the extent and long-term impacts of introgression have seldom been evaluated in the phylogenetic context of a radiation. Hares (Lepus) represent a widespread mammalian radiation of 32 extant species characterized by striking ecological adaptations and recurrent admixture. To understand the relevance of introgressive hybridization during the diversification of Lepus, we analyzed whole exome sequences (61.7 Mb) from 15 species of hares (1–4 individuals per species), spanning the global distribution of the genus, and two outgroups. We used a coalescent framework to infer species relationships and divergence times, despite extensive genealogical discordance. We found high levels of allele sharing among species and show that this reflects extensive incomplete lineage sorting and temporally layered hybridization. Our results revealed recurrent introgression at all stages along the Lepus radiation, including recent gene flow between extant species since the last glacial maximum but also pervasive ancient introgression occurring since near the origin of the hare lineages. We show that ancient hybridization between northern hemisphere species has resulted in shared variation of potential adaptive relevance to highly seasonal environments, including genes involved in circadian rhythm regulation, pigmentation, and thermoregulation. Our results illustrate how the genetic legacy of ancestral hybridization may persist across a radiation, leaving a long-lasting signature of shared genetic variation that may contribute to adaptation. 

Ämnesord

NATURVETENSKAP  -- Biologi -- Evolutionsbiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Evolutionary Biology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Bioinformatik och systembiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Bioinformatics and Systems Biology (hsv//eng)

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