Variation in foraging behaviour in red deer and the consequences for population demography

Illius, A.W., and Gordon, I.J. (1990) Variation in foraging behaviour in red deer and the consequences for population demography. Journal of Animal Ecology, 59 (1). pp. 89-101.

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(1) Individual differences in the predicted foraging efficiency of forest-dwelling red deer Cervus elaphus L. are used to assess the consequences for population demography.

(2) Analysis of the ontogeny of the incisor arcade and its allometry with body weight shows that growing animals experience restricted incisor breadth relative to weight during the transition from juvenile to mature dentition.

(3) A model of bite dimensions predicts that yearlings, male calves and stags will have the greatest reduction in foraging efficiency when feeding on depleted resources. This is corroborated by observed patterns of seasonal weight loss.

(4) Sex differences in growth strategy combined with the ontogeny and allometry of the incisor arcade may cause differential mortality between age and sex classes. It is suggested that population ecology and life-history theory should take greater account of natural selection on the juvenile phase.

Item ID: 42644
Item Type: Article (Research - C1)
ISSN: 1365-2656
Funders: Carnegie Trust (CT), Stapleton Memorial Trust (SMT), Hans Gadow Fund (HGF)
Date Deposited: 10 Feb 2016 07:43
FoR Codes: 06 BIOLOGICAL SCIENCES > 0608 Zoology > 060801 Animal Behaviour @ 50%
06 BIOLOGICAL SCIENCES > 0608 Zoology > 060806 Animal Physiological Ecology @ 50%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830303 Deer @ 50%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 25%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960806 Forest and Woodlands Flora, Fauna and Biodiversity @ 25%
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