Adaptive introgression underlies polymorphic seasonal camouflage in snowshoe hares

Author:

Jones Matthew R.1ORCID,Mills L. Scott234ORCID,Alves Paulo Célio256ORCID,Callahan Colin M.1ORCID,Alves Joel M.57ORCID,Lafferty Diana J. R.248ORCID,Jiggins Francis M.7ORCID,Jensen Jeffrey D.910,Melo-Ferreira José56ORCID,Good Jeffrey M.12ORCID

Affiliation:

1. Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA.

2. Wildlife Biology Program, University of Montana, Missoula, MT 59812, USA.

3. Office of Research and Creative Scholarship, University of Montana, Missoula, MT 59812, USA.

4. Fisheries, Wildlife, and Conservation Biology Program, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA.

5. CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, 4485-661 Vairão, Portugal.

6. Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.

7. Department of Genetics, University of Cambridge, Cambridge CB2 3EH, UK.

8. Department of Biology, Northern Michigan University, Marquette, MI 49855, USA.

9. School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.

10. School of Life Sciences, Arizona State University, Tempe, AZ 85281, USA.

Abstract

Hybrid camouflage variation Snowshoe hares molt from a brown coat to a white coat in winter. In some populations, however, where winter snow is less extensive, hares molt from a brown coat to a brown coat. Jones et al. show that regulation of the pigmentation gene Agouti is responsible for the winter coat color change. Hybridization with jackrabbits has led to introgression around this gene that facilitates the brown winter morph. Hybridization appears to have provided important adaptive variation to the snowshoe hare. Science , this issue p. 1355

Funder

National Science Foundation

Portuguese Fundação para a Ciência e a Tecnologia

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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