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Variation in host response to brood parasitism reflects evolutionary differences and not phenotypic plasticity

Authors
  • Kuehn, Michael J.
  • Peer, Brian D.
  • Rothstein, Stephen I.1, 2, 3, 4
  • 1 Department of Ecology, Evolution, and Marine Biology
  • 2 University of California
  • 3 Department of Biological Sciences
  • 4 Western Illinois University
Type
Published Article
Journal
Animal Behaviour
Publication Date
Jan 01, 2013
Accepted Date
Oct 15, 2013
Volume
88
Pages
21–28
Identifiers
DOI: 10.1016/j.anbehav.2013.11.007
Source
Elsevier
Keywords
License
Unknown

Abstract

•We tested responses of allopatric and sympatric populations of two hosts of brood-parasitic brown-headed cowbirds.•Allopatric hosts were less responsive to cowbird eggs than sympatric hosts.•Responses of sympatric hosts that had and had not been exposed to cowbirds were identical.•Exposure to cowbirds was not necessary for defensive response, and defence showed little phenotypic plasticity.•The decline in rejection behaviour of allopatric hosts reflects genetic change.

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