globalchange  > 气候变化事实与影响
Scopus记录号: 2-s2.0-85058674855
论文题名:
Individual diet specialisation in sparrows is driven by phenotypic plasticity in traits related to trade-offs in animal performance
作者: Maldonado K.; Newsome S.D.; Razeto-Barry P.; Ríos J.M.; Piriz G.; Sabat P.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期:1
起始页码: 128
结束页码: 137
语种: 英语
英文关键词: Assimilation efficiency ; diet variation ; digestive efficiency ; digestive enzymes ; individual diet specialisation ; niche breadth ; niche variation hypothesis ; niche width ; phenotypic plasticity ; stable isotopes ; trade-offs ; trophic niche
Scopus关键词: Animalia ; Passeridae ; Zonotrichia capensis
英文摘要: Individual diet specialisation (IS) is frequent in many animal taxa and affects population and community dynamics. The niche variation hypothesis (NVH) predicts that broader population niches should exhibit greater IS than populations with narrower niches, and most studies that examine the ecological factors driving IS focus on intraspecific competition. We show that phenotypic plasticity of traits associated with functional trade-offs is an important, but unrecognised mechanism that promotes and maintains IS. We measured nitrogen isotope (δ 15 N) and digestive enzyme plasticity in four populations of sparrows (Zonotrichia capensis) to explore the relationship between IS and digestive plasticity. Our results show that phenotypic plasticity associated with functional trade-offs is related in a nonlinear fashion with the degree of IS and positively with population niche width. These findings are opposite to the NVH and suggest that among individual differences in diet can be maintained via acclimatisation and not necessarily require a genetic component. © 2018 John Wiley & Sons Ltd/CNRS
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122764
Appears in Collections:气候变化事实与影响

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作者单位: Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibáñez, Diagonal Las Torres 2640, Santiago, Chile; Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile; Department of Biology, University of New Mexico, Albuquerque, NM 87131, United States; Instituto de Filosofía y Ciencias de la Complejidad, IFICC, Santiago, Los Alerces 3024, Chile; Vicerrectoría académica, Universidad Diego Portales, Manuel Rodríguez Sur 415, Santiago, Chile; Laboratorio de Química Ambiental, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA, CCT-CONICET), Mendoza, 5500, Argentina; Departamento de Ecología, Center of Applied Ecology & Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 6513677, Chile

Recommended Citation:
Maldonado K.,Newsome S.D.,Razeto-Barry P.,et al. Individual diet specialisation in sparrows is driven by phenotypic plasticity in traits related to trade-offs in animal performance[J]. Ecology Letters,2019-01-01,22(1)
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