气候变化领域集成服务门户(CCPortal): Survival costs of reproduction are mediated by parasite infection in wild Soay sheep

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DOI	10.1111/ele.13275
	Survival costs of reproduction are mediated by parasite infection in wild Soay sheep
	Leivesley J.A.; Bussière L.F.; Pemberton J.M.; Pilkington J.G.; Wilson K.; Hayward A.D.
发表日期	2019
ISSN	1461023X
卷号	22 期号:8
英文摘要	A trade-off between current and future fitness potentially explains variation in life-history strategies. A proposed mechanism behind this is parasite-mediated reproductive costs: individuals that allocate more resources to reproduction have fewer to allocate to defence against parasites, reducing future fitness. We examined how reproduction influenced faecal egg counts (FEC) of strongyle nematodes using data collected between 1989 and 2008 from a wild population of Soay sheep in the St. Kilda archipelago, Scotland (741 individuals). Increased reproduction was associated with increased FEC during the lambing season: females that gave birth, and particularly those that weaned a lamb, had higher FEC than females that failed to reproduce. Structural equation modelling revealed future reproductive costs: a positive effect of reproduction on spring FEC and a negative effect on summer body weight were negatively associated with overwinter survival. Overall, we provide evidence that parasite resistance and body weight are important mediators of survival costs of reproduction. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	costs of reproduction; fitness; immunity; infection; life history; peri-parturient rise; trade-offs
语种	英语
scopus关键词	Nematoda; Ovis aries; animal; female; parasite egg count; parasitology; parasitosis; reproduction; Scotland; sheep; wild animal; Animals; Animals, Wild; Female; Parasite Egg Count; Parasitic Diseases; Reproduction; Scotland; Sheep
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121061
作者单位	Department of Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom; Institute of Evolutionary Biology, University of Edinburgh, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh, EH9 3FL, United Kingdom; School of Biology, University of St Andrews, Sir Harold Mitchell Building, St Andrews, KY16 9TF, United Kingdom; Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom; Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, M5S 3B2, Canada
推荐引用方式 GB/T 7714	Leivesley J.A.,Bussière L.F.,Pemberton J.M.,et al. Survival costs of reproduction are mediated by parasite infection in wild Soay sheep[J],2019,22(8).
APA	Leivesley J.A.,Bussière L.F.,Pemberton J.M.,Pilkington J.G.,Wilson K.,&Hayward A.D..(2019).Survival costs of reproduction are mediated by parasite infection in wild Soay sheep.Ecology Letters,22(8).
MLA	Leivesley J.A.,et al."Survival costs of reproduction are mediated by parasite infection in wild Soay sheep".Ecology Letters 22.8(2019).