Data/hora: 14/06/2024 13:41:14

Provedor de dados: | 5
País: | France
Título: | Let's go beyond taxonomy in diet description: testing a trait-based approach to prey-predator relationships
Autores: | Spitz, Jerome; Ridoux, Vincent; Brind'Amour, Anik.
Data: | 2014-09
Ano: | 2014
Palavras-chave: | Foraging strategy; Fourth-corner method; Functional ecology; Marine mammals; Prey selection; RLQ analysis.
Resumo: | 1.  Understanding ‘Why a prey is a prey for a given predator?’ can be facilitated through trait-based approaches that identify linkages between prey and predator morphological and ecological characteristics and highlight key functions involved in prey selection.  2.  Enhanced understanding of the functional relationships between predators and their prey is now essential to go beyond the traditional taxonomic framework of dietary studies and to improve our knowledge of ecosystem functioning for wildlife conservation and management. 3.  We test the relevance of a three-matrix approach in foraging ecology among a marine mammal community in the northeast Atlantic to identify the key functional traits shaping prey selection processes regardless of the taxonomy of both the predators and prey.  4.  Our study reveals that prey found in the diet of marine mammals possess functional traits which are directly and significantly linked to predator characteristics, allowing the establishment of a functional typology of marine mammal–prey relationships. We found prey selection of marine mammals was primarily shaped by physiological and morphological traits of both predators and prey, confirming that energetic costs of foraging strategies and muscular performance are major drivers of prey selection in marine mammals.  5.  We demonstrate that trait-based approaches can provide a new definition of the resource needs of predators. This framework can be used to anticipate bottom-up effects on marine predator population dynamics and to identify predators which are sensitive to the loss of key prey functional traits when prey availability is reduced.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00189/30047/29495.pdf

DOI:10.1111/1365-2656.12218

http://archimer.ifremer.fr/doc/00189/30047/

Editor: | Wiley-blackwell
Relação: | info:eu-repo/grantAgreement/EC/FP7/244966/EU//FACTS
Formato: | application/pdf
Fonte: | Journal Of Animal Ecology (0021-8790) (Wiley-blackwell), 2014-09 , Vol. 83 , N. 5 , P. 1137-1148

Fonte:

2014 The Authors. Journal of Animal Ecology © 2014 British Ecological Society

info:eu-repo/semantics/openAccess

restricted use