globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12933
Scopus记录号: 2-s2.0-85043705058
论文题名:
Intragroup competition predicts individual foraging specialisation in a group-living mammal
作者: 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.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:5
起始页码: 665
结束页码: 673
语种: 英语
英文关键词: Banded mongoose ; competition ; foraging behaviour ; foraging niche ; group-living ; Mungos mungo ; social group ; specialisation ; stable isotope
Scopus关键词: Mammalia ; Mungos mungo
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107461
Appears in Collections:气候减缓与适应

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作者单位: Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Cornwall, United Kingdom; Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall, 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, Finland; Centre for Research in Ecology, Evolution and Behaviour, University of Roehampton, London, United Kingdom

Recommended Citation:
Sheppard C.E.,Inger R.,McDonald R.A.,et al. Intragroup competition predicts individual foraging specialisation in a group-living mammal[J]. Ecology Letters,2018-01-01,21(5)
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