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Hormones and Behavior 31, 314 (1997) Article No. HB971314

Summary: Hormones and Behavior 31, 314 (1997)
Article No. HB971314
Social Dynamics and the Cortisol Response
to Immobilization Stress of the African
Wild Dog, Lycaon pictus
Marienne S. de Villiers,*,1
Albert S. van Jaarsveld,*
David G. A. Meltzer, and Philip R. K. Richardson*
*Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa;
and Price Forbes Chair of Wildlife, Faculty of Veterinary Science, University of Pretoria,
Onderstepoort, South Africa
Animals which belong to social groups are subject toThe aims of the study were to characterize the cortisol
response to immobilization stress in African wild dogs a particular suite of stresses and this may be reflected
(Lycaon pictus) and to investigate the relationship be- by concentrations of glucocorticoids in the blood. In-
tween stress and sociality in these pack-living canids. creased cortisol concentrations may be associated with
Ad lib. observations were made on a captive pack of social instability (Sapolsky, 1983; Alberts, Sapolsky, and
19 wild dogs. Individuals were classified as either Altmann, 1992; Gust, Gordon, and Hambright, 1993),
dominant or subordinate. Cardinal and ordinal domi-
while the presence of familiar social partners may help
nance indices were also calculated for pack members,


Source: Altwegg, Res - Avian Demography Unit, Department of Statistical Sciences, University of Cape Town


Collections: Environmental Sciences and Ecology