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Type: Artigo
Title: Nested diets: a novel pattern of individual-level resource use
Author: Araújo, Márcio S.
Martins, Eduardo G.
Cruz, Leonardo D.
Fernandes, Fernanda R.
Linhares, Arício X.
Reis, Sérgio F. dos
Guimarães Jr., Paulo R.
Abstract: Many generalist populations may actually be composed of relatively specialist individuals. This ‘individual specialization’ may have important ecological and evolutionary implications. Although this phenomenon has been documented in more than one hundred taxa, it is still unclear how individuals within a population actually partition resources. Here we applied several methods based on network theory to investigate the intrapopulation patterns of resource use in the gracile mouse opossum Gracilinanus microtarsus. We found evidence of significant individual specialization in this species and that the diets of specialists are nested within the diets of generalists. This novel pattern is consistent with a recently proposed model of optimal foraging and implies strong asymmetry in the interactions among individuals of a population
Subject: Dieta
Polimorfismo (Genética)
Country: Reino Unido
Editor: Wiley
Rights: Fechado
Identifier DOI: 10.1111/j.1600-0706.2009.17624.x
Date Issue: 2010
Appears in Collections:IB - Artigos e Outros Documentos

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