NDLI: Extra-pair paternity in relation to regional and local climate in an Arctic-breeding passerine

Content Provider	Springer Nature Link
Author	Hoset, Katrine S. Espmark, Yngve Fossøy, Frode Stokke, Bård G. Jensen, Henrik Wedege, Morten I. Moksnes, Arne
Copyright Year	2013
Abstract	Reproductive processes are affected by local and regional climate variation. Birds breeding in the Arctic may experience strong energetic constraints, which will affect their reproductive output. Recent research has emphasized the importance of extra-pair copulation as a means of improving reproductive output. In this paper, we explore ecological and climatic determinants that may explain variation in extra-pair paternity (EPP) in an arctic-breeding passerine, the snow bunting Plectrophenax nivalis. EPP occurred in 10.8 % of the young and 20.9 % of the broods sampled from 1999 to 2003. We found that the proportion of extra-pair young in a nest was positively related to the body size and age of the social male and weakly negatively related to the local average minimum temperature prior to the onset of egg laying. These results suggest that older and larger males lost a larger share of paternity than smaller and younger males, and that the relative loss of paternity decreased with cold weather during the female’s fertile period. Large and old males spend less time mate guarding compared to small and young males and may allocate more time towards extra-pair forays, and thus lose more paternity in their own nest. Climatic conditions most likely constrain the total energy budget with less energy available for extra-pair activity in cold weather.
Starting Page	89
Ending Page	97
Page Count	9
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	37
Issue Number	1
e-ISSN	14322056
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Extra-pair paternity Ecological effects Climatic effects Male age Male size Plectrophenax nivalis Ecology Oceanography Microbiology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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