Insectivore life histories : further evidence against an optimum body size for mammals

Symonds, M. R. E. 1999, Insectivore life histories : further evidence against an optimum body size for mammals, Functional ecology, vol. 13, no. 4, pp. 508-513.

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Title Insectivore life histories : further evidence against an optimum body size for mammals
Author(s) Symonds, M. R. E.
Journal name Functional ecology
Volume number 13
Issue number 4
Start page 508
End page 513
Publisher Wiley - Blackwell Publishing
Place of publication Oxford, England
Publication date 1999-08
ISSN 0269-8463
1365-2435
Keyword(s) body mass
comparative method
Insectivora
phylogeny
reproductive power
Summary 1. This study tests a model of the relationship of body mass to reproductive power (the rate of conversion of energy from the environment to an organism’s offspring). Specifically tested is the prediction that the regression of life-history variables on body size will change slope and sign about an ‘optimum’ body mass of 100 g.

2. Life-history data from the mammalian order Insectivora have been collated and analysed using a phylogenetic comparative method to test this prediction.

3. The analyses showed little evidence for significant changes in slope or sign around 100 g body mass, or other possible optimal body masses, contradicting the predictions of the model. These findings agree with those of similar analyses on life-history variables of bats.
Language eng
Field of Research 060201 Behavioural Ecology
060203 Ecological Physiology
060308 Life Histories
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1999, British Ecological Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039058

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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