Social and maternal factors affecting duckling survival in eiders Somateria mollissima

The Journal of Animal Ecology
Markus OstMikael Kilpi

Abstract

1. With the aid of a novel survivorship model, an 8-year field study of social and maternal factors affecting duckling survival in eiders (Somateria mollissima) revealed that duckling survival probability varies in accordance with maternal brood-rearing strategy. This variability in survival provides compelling evidence of different annual fitness consequences between females that share brood-rearing and those that tend their broods alone. Consequently, as prebreeding survival is often a major source of individual variation in lifetime reproductive success, a female's annual, state-dependent (e.g. condition) choice of a brood-rearing strategy can be a critical fitness decision. 2. Variance in duckling survival among lone tender broods was best explained by a model with significant interannual variability in survival, and survivorship tending to increase with increasing clutch size at hatch. Clutch size was correlated positively with female condition. Hatch date and female body condition together affected duckling survival, but their contributions are confounded. We were unable to identify a relationship between female age or experience and duckling survival. 3. Variance in duckling survival among multifemale brood-rearing coali...Continue Reading

References

Aug 11, 1999·Trends in Ecology & Evolution·J Lindström
Dec 20, 2000·Proceedings of the National Academy of Sciences of the United States of America·C R Brown, M B Brown
Aug 18, 2004·Journal of Evolutionary Biology·K R Foster
Oct 6, 2005·Molecular Ecology·Markus OstMikael Kilpi
Jan 9, 2007·The American Naturalist·Markus OstRon Ydenberg
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Citations

Sep 17, 2008·Oecologia·Markus OstBenjamin Steele
Sep 4, 2009·Oecologia·Markus Ost, Benjamin B Steele
Oct 23, 2009·Biology Letters·Aleksi LehikoinenMarkus Ost
Oct 13, 2015·Oecologia·Kim Jaatinen, Markus Öst
Apr 5, 2013·Evolution; International Journal of Organic Evolution·Jessica Purcell, Michel Chapuisat
Jul 16, 2013·General and Comparative Endocrinology·Kim JaatinenMarkus Öst
Aug 4, 2018·Biological Reviews of the Cambridge Philosophical Society·Malte AnderssonPeter Waldeck
Oct 1, 2010·The Journal of Animal Ecology·Kim JaatinenAleksi Lehikoinen
Jul 28, 2020·PloS One·Thomas Kjær Christensen, Thorsten Johannes Skovbjerg Balsby

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