NDLI: Energetics and life-history of bats in comparison to small mammals

Content Provider	Springer Nature Link
Author	Becker, N. I. Encarnação, J. A. Tschapka, M. Kalko, E. K. V.
Copyright Year	2012
Abstract	Mammals can be aligned along a slow-fast life-history continuum and a low–high metabolic rate continuum based on their traits. Small non-volant mammals occupy the fast/high end in both continua with high reproductive rates and short life spans linked with high mass-specific metabolic rates. Bats occupy the high end of the metabolic continuum, but the slow end of the life-history continuum with low reproductive rates and long life spans. Typically, both continua are linked, and similar life-history traits of species are reflected in more similar metabolic rates. We therefore hypothesized that metabolic rates are similar in species with similar life-history traits. Resting metabolic rates (RMR) were measured for three ecologically and morphologically similar sympatric bat species (Myotis nattereri, M. bechsteinii, and Plecotus auritus; Vespertilionidae) and compared to data from other similar-sized, temperate insectivorous mammals with other life-history strategies. The bat species share similar life-histories and RMRs, both of which differ from the remaining mammals and therefore supporting our hypothesis. To verify that bats are similar in RMR, two energetically contrasting periods were compared. RMRs in post-lactating females did not differ between bat species. It was, however, positively correlated with parasite load in both Myotis species. However, RMRs differed during energy-demanding pregnancy where M. nattereri had the significantly lowest RMR, suggesting metabolic compensation as an energy-saving strategy. We conclude that the energy requirements of bat species with similar life-history traits resemble each other during periods of low energetic demands and are more similar to each other than to other small temperate mammals.
Starting Page	249
Ending Page	258
Page Count	10
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	28
Issue Number	2
e-ISSN	14401703
Language	English
Publisher	Springer Japan
Publisher Date	2012-12-14
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecophysiology Compensation Energy-saving mechanisms Respirometry Energy demand Ecology Plant Sciences Zoology Evolutionary Biology Behavioural Sciences Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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Energetics and life-history of bats in comparison to small mammals

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