CareauThomasHumphriesEtAl2008

Référence

Careau, V., Thomas, D.W., Humphries, M.M., Reale, D. (2008) Energy metabolism and animal personality. Oikos, 117(5):641-653. (Scopus )

Résumé

In this paper we show how animal personality could explain some of the large inter-individual variation in resting metabolic rate (MR) and explore methodological and functional linkages between personality and energetics. Personality will introduce variability in resting MR measures because individuals consistently differ in their stress response, exploration or activity levels, all of which influence MR measurements made with respirometry and the doubly-labelled water technique. Physiologists try to exclude these behavioural influences from resting MR measurements, but animal personality research indicates that these attempts are unlikely to be successful. For example, because reactive animals "freeze" when submitted to a stress, their MR could be classified as "resting" because of immobility when in fact they are highly stressed with an elevated MR. More importantly, recent research demonstrating that behavioural responses to novel and highly artificial stimuli are correlated with both behaviour and fitness under more natural circumstances calls into question the wisdom of excluding these behavioural influences on MR measurements. The reason that intra-specific variation in resting MR are so weakly correlated with daily energy expenditure (DEE) and fitness, may be that the latter two measures fully incorporate personality while the former partially excludes its influence. Because activity, exploration, boldness and aggressiveness are energetically costly, personality and metabolism should be correlated and physiological constraints may underlie behavioural syndromes. We show how physiological ecologists can better examine behavioural linkages between personality and metabolism, as required to better understand the physiological correlates of personality and the evolutionary consequences of metabolic variability. © 2008 The Authors.

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@ARTICLE { CareauThomasHumphriesEtAl2008,
    AUTHOR = { Careau, V. and Thomas, D.W. and Humphries, M.M. and Reale, D. },
    TITLE = { Energy metabolism and animal personality },
    JOURNAL = { Oikos },
    YEAR = { 2008 },
    VOLUME = { 117 },
    PAGES = { 641-653 },
    NUMBER = { 5 },
    ABSTRACT = { In this paper we show how animal personality could explain some of the large inter-individual variation in resting metabolic rate (MR) and explore methodological and functional linkages between personality and energetics. Personality will introduce variability in resting MR measures because individuals consistently differ in their stress response, exploration or activity levels, all of which influence MR measurements made with respirometry and the doubly-labelled water technique. Physiologists try to exclude these behavioural influences from resting MR measurements, but animal personality research indicates that these attempts are unlikely to be successful. For example, because reactive animals "freeze" when submitted to a stress, their MR could be classified as "resting" because of immobility when in fact they are highly stressed with an elevated MR. More importantly, recent research demonstrating that behavioural responses to novel and highly artificial stimuli are correlated with both behaviour and fitness under more natural circumstances calls into question the wisdom of excluding these behavioural influences on MR measurements. The reason that intra-specific variation in resting MR are so weakly correlated with daily energy expenditure (DEE) and fitness, may be that the latter two measures fully incorporate personality while the former partially excludes its influence. Because activity, exploration, boldness and aggressiveness are energetically costly, personality and metabolism should be correlated and physiological constraints may underlie behavioural syndromes. We show how physiological ecologists can better examine behavioural linkages between personality and metabolism, as required to better understand the physiological correlates of personality and the evolutionary consequences of metabolic variability. © 2008 The Authors. },
    COMMENT = { Cited By (since 1996): 2 Export Date: 24 October 2008 Source: Scopus CODEN: OIKSA doi: 10.1111/j.0030-1299.2008.16513.x },
    DOI = { 10.1111/j.0030-1299.2008.16513.x },
    ISSN = { 00301299 (ISSN) },
    KEYWORDS = { behavioral response, bioactivity, bioenergetics, environmental cue, environmental stress, metabolism, physiological response, Animalia },
    OWNER = { Luc },
    TIMESTAMP = { 2008.10.24 },
    URL = { http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-42949157181&partnerID=40&rel=R8.2.0 },
}

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