HenryThomasVaudryEtAl2002

Référence

Henry, M., Thomas, D.W., Vaudry, R. and Carrier, M. (2002) Foraging distances and home range of pregnant and lactating little brown bats (Myotis lucifugus). Journal of Mammalogy, 83(3):767-774.

Résumé

As income breeders, lactating female bats rely on current resource intake to support costs of reproduction and so must reconcile the conflicting demands of foraging and nursing. We documented changes in the movement of female little brown bats (Myotis lucifugus) around roosts between pregnancy and lactation. Home-range size dropped by 51% between pregnancy and lactation, resulting in a 35% decrease in flight distances. Although pregnant females rarely returned to roosts during the night, lactating females returned 1-2 times, which led to an increase in activity at the roosts beginning about 3 h after initial emergence. We argue that their high mass-specific milk production forces lactating females to nurse at night, which in turn imposes a constraint on foraging distances. The shift to a smaller home range is probably facilitated by the concomitant increase in insect biomass during the July lactation period.

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@ARTICLE { HenryThomasVaudryEtAl2002,
    AUTHOR = { Henry, M. and Thomas, D.W. and Vaudry, R. and Carrier, M. },
    TITLE = { Foraging distances and home range of pregnant and lactating little brown bats (Myotis lucifugus) },
    JOURNAL = { Journal of Mammalogy },
    YEAR = { 2002 },
    VOLUME = { 83 },
    PAGES = { 767-774 },
    NUMBER = { 3 },
    NOTE = { 00222372 (ISSN) Cited By (since 1996): 10 Export Date: 26 April 2007 Source: Scopus CODEN: JOMAA doi: 10.1644/1545-1542(2002)083<0767:FDAHRO>2.0.CO;2 Language of Original Document: English Correspondence Address: Thomas, D.W.; Grp. Rech. Ecol., Nutri./Energ.; De?partement de Biologie; Universite? de Sherbrooke Sherbrooke, Que. J1K 2R1, Canada; email: d.thomas@courrier.usherb.ca References: Anthony, E.L.P., Age determination in bats (1988) Ecological and behavioral methods for the study of bats, pp. 47-58. , (T. H. Kunz, ed.). Smithsonian Institution Press, Washington, D.C; Anthony, E.L.P., Kunz, T.H., Feeding strategies of the little brown bat, Myotis lucifugus, in southern New Hampshire (1977) Ecology, 58, pp. 775-786; Anthony, E.L.P., Stack, M.H., Kunz, T.H., Night roosting and the nocturnal time budget of the little brown bat Myotis lucifugus: Effects of reproductive status, prey density, and environmental conditions (1981) Oecologia, 51, pp. 151-156; Audet, D., Fenton, B., Heterothermy and the use of torpor by the bat Eptesicus fuscus (Chiroptera: Vespertilionidae): A field study (1988) Physiological Zoology, 61, pp. 197-204; Barclay, R.M.R., Night roosting behavior of the little brown bat, Myotis lucifugus (1982) Journal of Mammalogy, 63, pp. 464-474; Hanwell, G.L., Peaker, M., Physiological effects of lactation on the mother (1977) Symposia of the Zoological Society of London, 41, pp. 297-312; Hayes, J.P., Temporal variation in activity of bats and the design of echolocation studies (1997) Journal of Mammalogy, 78, pp. 514-524; Hughes, P.M., Rayner, J.M.V., The flight of pipistrelle bats, Pipistrellus pipistrellus, during pregnancy and lactation (1993) Journal of Zoology (London), 230, pp. 541-555; Jonsson, K.I., Capital and income breeding as alternative tactics of resource use in reproduction (1997) Oikos, 78, pp. 57-66; Kunz, T.H., Roosting ecology of bats (1988) Ecology of bats, pp. 1-55. , (T. H. Kunz, ed.). Plenum Publishing Corporation, New York; Kurta, A., Bell, G.P., Nagy, K.A., Kunz, T.H., Energetics of pregnancy and lactation in free-ranging little brown bat (Myotis lucifugus) (1989) Physiological Zoology, 62, pp. 804-818; McLean, J.A., Speakman, J.R., Energy budgets of lactating and non-reproductive brown long-eared bats (Plecotus auritus) suggest females use compensation in lactation (1999) Functional Ecology, 13, pp. 360-372; Racey, P.A., Environmental factors affecting the length of gestation in heterothermic bats (1973) Journal of Reproduction and Fertility, 19 (SUPPL.), pp. 175-189; Racey, P.A., Ecology of bat reproduction (1982) Ecology of bats, pp. 57-104. , (T. H. Kunz, ed.). Plenum Publishing Corporation, New York; Racey, P.A., Reproductive assessment in bats (1988) Ecological and behavioral methods for the study of bats, pp. 31-45. , (T. H. Kunz, ed.). Smithsonian Institution Press, Washington, D.C; Racey, P.A., Speakman, J.R., The energy costs of pregnancy and lactation in heterothermic bats (1987) Symposia of the Zoological Society of London, 57, pp. 107-125; Racey, P.A., Swift, S.M., Variations in gestation length in a colony of pipistrelle bats (Pipistrellus pipistrellus) from year to year (1981) Journal of Reproduction and Fertility, 61, pp. 123-129; Racey, P.A., Swift, S.M., Feeding ecology of Pipistrellus pipistrellus (Chiroptera: Vespertilionidae) during pregnancy and lactation. I. Foraging behaviour (1985) Journal of Animal Ecology, 54, pp. 205-215; Speakman, J.R., Thomas, D.W., Physiological ecology and energetics of bats Ecology of bats II, , In press. T. H. Kunz and M. B. Fenton, eds. Academic Press, New York; Swift, S.M., Activity patterns of pipistrelle bats (Pipistrellus pipistrellus) in north-east Scotland (1980) Journal of Zoology (London), 190, pp. 285-295; Syme, D.M., Fenton, M.B., Zigouris, J., Roost and food supplies ameliorate the impact of bad summer on reproduction by the bat, Myotis lucifugus Leconte (Chiroptera: Vespertilionidae) (2001) E?coscience, 8, pp. 18-25; Tuttle, M.D., An improved trap for bats (1974) Journal of Mammalogy, 55, pp. 475-477; Wilkinson, L.C., Barclay, R.M.R., Differences in the foraging behaviour of male and female big brown bats (Eptesicus fuscus) during the reproductive period (1997) Ecoscience, 4, pp. 279-285. },
    ABSTRACT = { As income breeders, lactating female bats rely on current resource intake to support costs of reproduction and so must reconcile the conflicting demands of foraging and nursing. We documented changes in the movement of female little brown bats (Myotis lucifugus) around roosts between pregnancy and lactation. Home-range size dropped by 51% between pregnancy and lactation, resulting in a 35% decrease in flight distances. Although pregnant females rarely returned to roosts during the night, lactating females returned 1-2 times, which led to an increase in activity at the roosts beginning about 3 h after initial emergence. We argue that their high mass-specific milk production forces lactating females to nurse at night, which in turn imposes a constraint on foraging distances. The shift to a smaller home range is probably facilitated by the concomitant increase in insect biomass during the July lactation period. },
    KEYWORDS = { Bat Foraging Lactation Movements Myotis lucifugus Pregnancy bat foraging behavior home range lactation pregnancy Insecta Myotis Myotis lucifugus Vertebrata },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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