| The influence of sexual dimorphism in body size and mouth morphology on diet selection and sexual segregation in cervids. | |
| | |
MedLine Citation:
|
PMID: 9704534 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In mammals patterns of food resource distribution influence female distribution, leading to aggregation and favouring the evolution of a polygynous mating system. Under polygyny, sexual selection favours an increase of the male body size, since larger bodied males have competitive advantage in fights for mates. As a result, sexual body size dimorphism is a general rule in polygynous artiodactyls and is correlated with the degree of polygyny. Sex differences in body size lead to differences in energy requirements and food selection between the sexes. This has led to the sexual size dimorphism hypothesis being used to explain sexual segregation in ungulates, although from the available studies, it is not possible to deduce a consistent pattern between sexes in the use of forage of different abundance or quality. Two other groups of hypotheses have been put forward to explain sexual segregation in ungulates. These are based on reproductive strategy and social factors, both of which are independent of body size. The mechanistic explanation for differences in food selection ability and intake rate between animals of different body size and how this can lead to an understanding of the sex differences in diet and sexual segregation, both of which are intimately linked, is discussed. |
| | |
Authors:
|
F J Pérez-Barbería; I J Gordon |
Related Documents
:
|
17441194 - Interpopulation variation in life-history traits of poeciliopsis prolifica: implication... 2743244 - A comparison of seasonal variation in birthweights between rural zaire and ontario. 16846914 - A uv signal of offspring condition mediates context-dependent parental favouritism. 7797164 - Contrasting chimpanzees and bonobos: nearest neighbor distances and choices. 15926144 - Dietary fiber as a versatile food component: an industrial perspective. 14664844 - Persistence of carbofuran in marine sand and water. |
Publication Detail:
|
Type: Lectures |
Journal Detail:
|
Title: Acta veterinaria Hungarica Volume: 46 ISSN: 0236-6290 ISO Abbreviation: Acta Vet. Hung. Publication Date: 1998 |
Date Detail:
|
Created Date: 1998-09-09 Completed Date: 1998-09-09 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 8406376 Medline TA: Acta Vet Hung Country: HUNGARY |
Other Details:
|
Languages: eng Pagination: 357-67 Citation Subset: IM |
Affiliation:
|
Macaulay Land Use Research Institute, Aberdeen, Scotland, United Kingdom. J.Perez-Barberia@mluri.sari.ac.uk |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animal Nutritional Physiological Phenomena* Animals Body Constitution / physiology* Deer / growth & development*, physiology Feeding Behavior* Female Food Supply Male Mastication / physiology Mouth / anatomy & histology, physiology* Sex Characteristics* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Photoperiod-melatonin relay in deer.
Next Document: Growth, voluntary food intake and digestion in farmed temperate and tropical deer.