BerteauxBergeronThomasEtAl1996

Référence

Berteaux, D., Bergeron, J.M., Thomas, D.W., Lapierre, H. (1996) Solitude versus gregariousness: Do physical benefits drive the choice in overwintering meadow voles? Oikos, 76(2):330-336.

Résumé

Winter group formation has been described for many small rodent species living in temperate environments. Physical benefits (e.g. energy and water conservation) of huddling are generally considered to be the ultimate cause of these aggregations. We manipulated group size of meadow voles (1 versus 4 individuals) in a field experiment involving 40 individuals (5 replicates, each including 4 solitary-living and 4 group-living individuals) to test the validity of the physical benefits hypothesis. Energy expenditures and water flux were measured using the doubly labelled water method. Group size had no effect on field metabolic rate, water turnover, body mass changes, body composition, and survival. The role of physical benefits as the driving force behind winter aggregations should thus be reevaluated. Future studies should concentrate on specific time periods characterized by extreme climatic conditions. Alternative benefits of aggregations, such as decreased predation risk or social transmission of information, should also be considered.

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@ARTICLE { BerteauxBergeronThomasEtAl1996,
    AUTHOR = { Berteaux, D. and Bergeron, J.M. and Thomas, D.W. and Lapierre, H. },
    TITLE = { Solitude versus gregariousness: Do physical benefits drive the choice in overwintering meadow voles? },
    JOURNAL = { Oikos },
    YEAR = { 1996 },
    VOLUME = { 76 },
    PAGES = { 330-336 },
    NUMBER = { 2 },
    NOTE = { 00301299 (ISSN) Cited By (since 1996): 13 Export Date: 26 April 2007 Source: Scopus CODEN: OIKSA Language of Original Document: English Correspondence Address: Berteaux, D.; Departement de Biologie; Univ. de Sherbrooke Sherbrooke, Que. J1K 2R1, Canada References: (1987) StatView II, , Abacus Concepts, Inc., Berkeley, CA; (1989) SuperANOVA, , Abacus Concepts, Inc., Berkeley, CA; Alexander, R.D., The evolution of social behavior (1974) Annu. Rev. Ecol. Syst., 5, pp. 325-383; Barash, D.P., (1982) Sociobiology and Behavior, 2nd Ed., , Elsevier, New York; Berteaux, D., Duhamel, R., Bergeron, J.-M., Can radio collars affect dominance relationships in Microtus? (1994) Can. J. Zool., 72, pp. 785-789; Masseboeuf, F., Bonzom, J.-M., Bergeron, J.-M., Thomas, D.W., Lapierre, H., Effect of carrying a radiocollar on expenditure of energy by meadow voles (1996) J. 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    ABSTRACT = { Winter group formation has been described for many small rodent species living in temperate environments. Physical benefits (e.g. energy and water conservation) of huddling are generally considered to be the ultimate cause of these aggregations. We manipulated group size of meadow voles (1 versus 4 individuals) in a field experiment involving 40 individuals (5 replicates, each including 4 solitary-living and 4 group-living individuals) to test the validity of the physical benefits hypothesis. Energy expenditures and water flux were measured using the doubly labelled water method. Group size had no effect on field metabolic rate, water turnover, body mass changes, body composition, and survival. The role of physical benefits as the driving force behind winter aggregations should thus be reevaluated. Future studies should concentrate on specific time periods characterized by extreme climatic conditions. Alternative benefits of aggregations, such as decreased predation risk or social transmission of information, should also be considered. },
    KEYWORDS = { gregariousness overwintering Microtus pennsylvanicus },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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