Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.

Understanding the mechanisms that drive prey selection is a major challenge in foraging ecology. Most studies of foraging strategies have focused on behavioural costs, and have generally failed to recognize that differences in the quality of prey may be as important to predators as the costs of acqu...

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Autores principales:	Jérôme Spitz, Andrew W Trites, Vanessa Becquet, Anik Brind'Amour, Yves Cherel, Robert Galois, Vincent Ridoux
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/06c099545dbb49c39f2b199c6c51734b
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spelling	oai:doaj.org-article:06c099545dbb49c39f2b199c6c51734b2021-11-18T08:07:47ZCost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.1932-620310.1371/journal.pone.0050096https://doaj.org/article/06c099545dbb49c39f2b199c6c51734b2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23185542/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Understanding the mechanisms that drive prey selection is a major challenge in foraging ecology. Most studies of foraging strategies have focused on behavioural costs, and have generally failed to recognize that differences in the quality of prey may be as important to predators as the costs of acquisition. Here, we tested whether there is a relationship between the quality of diets (kJ · g(-1)) consumed by cetaceans in the North Atlantic and their metabolic costs of living as estimated by indicators of muscle performance (mitochondrial density, n = 60, and lipid content, n = 37). We found that the cost of living of 11 cetacean species is tightly coupled with the quality of prey they consume. This relationship between diet quality and cost of living appears to be independent of phylogeny and body size, and runs counter to predictions that stem from the well-known scaling relationships between mass and metabolic rates. Our finding suggests that the quality of prey rather than the sheer quantity of food is a major determinant of foraging strategies employed by predators to meet their specific energy requirements. This predator-specific dependence on food quality appears to reflect the evolution of ecological strategies at a species level, and has implications for risk assessment associated with the consequences of changing the quality and quantities of prey available to top predators in marine ecosystems.Jérôme SpitzAndrew W TritesVanessa BecquetAnik Brind'AmourYves CherelRobert GaloisVincent RidouxPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e50096 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jérôme Spitz Andrew W Trites Vanessa Becquet Anik Brind'Amour Yves Cherel Robert Galois Vincent Ridoux Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
description	Understanding the mechanisms that drive prey selection is a major challenge in foraging ecology. Most studies of foraging strategies have focused on behavioural costs, and have generally failed to recognize that differences in the quality of prey may be as important to predators as the costs of acquisition. Here, we tested whether there is a relationship between the quality of diets (kJ · g(-1)) consumed by cetaceans in the North Atlantic and their metabolic costs of living as estimated by indicators of muscle performance (mitochondrial density, n = 60, and lipid content, n = 37). We found that the cost of living of 11 cetacean species is tightly coupled with the quality of prey they consume. This relationship between diet quality and cost of living appears to be independent of phylogeny and body size, and runs counter to predictions that stem from the well-known scaling relationships between mass and metabolic rates. Our finding suggests that the quality of prey rather than the sheer quantity of food is a major determinant of foraging strategies employed by predators to meet their specific energy requirements. This predator-specific dependence on food quality appears to reflect the evolution of ecological strategies at a species level, and has implications for risk assessment associated with the consequences of changing the quality and quantities of prey available to top predators in marine ecosystems.
format	article
author	Jérôme Spitz Andrew W Trites Vanessa Becquet Anik Brind'Amour Yves Cherel Robert Galois Vincent Ridoux
author_facet	Jérôme Spitz Andrew W Trites Vanessa Becquet Anik Brind'Amour Yves Cherel Robert Galois Vincent Ridoux
author_sort	Jérôme Spitz
title	Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
title_short	Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
title_full	Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
title_fullStr	Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
title_full_unstemmed	Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
title_sort	cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/06c099545dbb49c39f2b199c6c51734b
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Cost of living dictates what whales, dolphins and porpoises eat: the importance of prey quality on predator foraging strategies.

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