Sexual dimorphism, survival and dispersal in red deer

Catchpole, Edward A. and Fan, Y. and Morgan, Byron J. T. and Coulson, Tim and Clutton-Brock, Tim H. (2004) Sexual dimorphism, survival and dispersal in red deer. Journal of Agricultural, Biological, and Environmental Statistics, 9 (1). pp. 1-26. ISSN 1085-7117. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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A detailed and extensive mark-recapture-recovery study of red deer on the island of Rum forms the basis of the modeling of this article. We analyze male and female deer separately, and report results for both in this article, but use the female data to demonstrate our modeling approach. We provide a model-selection procedure that allows us to describe the survival by a combination of age-classes, with common survival within each class, and senility, which is modeled continuously as a parametric function of age. Dispersal out of the study area is modeled separately. Survival and dispersal probabilities are examined for the possible influence of both environmental and individual covariates, including a range of alternative measures of population density. The resulting model is succinct and biologically realistic. We compare and contrast survival rates of male and female deer of different ages and compare the factors that affect their survival. We demonstrate large differences in the rate of senescence between males and females even though their senescence begins at the same age. The differences between the sexes suggest that, in population modeling of sexually size-dimorphic species, it is important to identify sex-specific survival functions.

Item Type: Article
Uncontrolled keywords: age classes; Cervus elaphus; emigration; logistic regression; mark-recapture; mark-recovery; maximum likelihood; senility; sex-specific survival; size dimorphism
Subjects: H Social Sciences > HA Statistics
Divisions: Faculties > Science Technology and Medical Studies > School of Mathematics Statistics and Actuarial Science
Depositing User: Judith Broom
Date Deposited: 19 Dec 2007 18:24
Last Modified: 30 Jun 2014 11:25
Resource URI: (The current URI for this page, for reference purposes)
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