气候变化领域集成服务门户(CCPortal): Intragroup competition predicts individual foraging specialisation in a group-living mammal

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DOI	10.1111/ele.12933
	Intragroup competition predicts individual foraging specialisation in a group-living mammal
	Sheppard C.E.; Inger R.; McDonald R.A.; Barker S.; Jackson A.L.; Thompson F.J.; Vitikainen E.I.K.; Cant M.A.; Marshall H.H.
发表日期	2018
ISSN	1461023X
卷号	21 期号:5
英文摘要	Individual foraging specialisation has important ecological implications, but its causes in group-living species are unclear. One of the major consequences of group living is increased intragroup competition for resources. Foraging theory predicts that with increased competition, individuals should add new prey items to their diet, widening their foraging niche (‘optimal foraging hypothesis’). However, classic competition theory suggests the opposite: that increased competition leads to niche partitioning and greater individual foraging specialisation (‘niche partitioning hypothesis’). We tested these opposing predictions in wild, group-living banded mongooses (Mungos mungo), using stable isotope analysis of banded mongoose whiskers to quantify individual and group foraging niche. Individual foraging niche size declined with increasing group size, despite all groups having a similar overall niche size. Our findings support the prediction that competition promotes niche partitioning within social groups and suggest that individual foraging specialisation may play an important role in the formation of stable social groupings. © 2018 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd
英文关键词	Banded mongoose; competition; foraging behaviour; foraging niche; group-living; Mungos mungo; social group; specialisation; stable isotope
语种	英语
scopus关键词	Mammalia; Mungos mungo; animal; diet; ecology; feeding behavior; female; male; mammal; Animals; Diet; Ecology; Feeding Behavior; Female; Male; Mammals
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/121326
作者单位	Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Cornwall, TR10 9FE, United Kingdom; Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall, TR10 9FE, United Kingdom; Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland; Department of Biosciences, University of Helsinki, PO Box 65 (Viikinkaari 1), Helsinki, FI-00014, Finland; Centre for Research in Ecology, Evolution and Behaviour, University of Roehampton, London, SW15 4JD, United Kingdom
推荐引用方式 GB/T 7714	Sheppard C.E.,Inger R.,McDonald R.A.,et al. Intragroup competition predicts individual foraging specialisation in a group-living mammal[J],2018,21(5).
APA	Sheppard C.E..,Inger R..,McDonald R.A..,Barker S..,Jackson A.L..,...&Marshall H.H..(2018).Intragroup competition predicts individual foraging specialisation in a group-living mammal.Ecology Letters,21(5).
MLA	Sheppard C.E.,et al."Intragroup competition predicts individual foraging specialisation in a group-living mammal".Ecology Letters 21.5(2018).