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Effects of chemical immobilization on survival of African Buffalo in the Kruger National Park

Citation

Oosthuizen, WC and Cross, PC and Bowers, JA and Hay, C and Ebinge, MR and Buss, P and Hofmeyr, M and Cameron, EZ, Effects of chemical immobilization on survival of African Buffalo in the Kruger National Park, Journal of Wildlife Management, 73, (1) pp. 149-153. ISSN 0022-541X (2009) [Refereed Article]

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Copyright Statement

Copyright 2009 by John Wiley & Sons, Inc.

DOI: doi:10.2193/2008-071

Abstract

Capturing, immobilizing, and fitting radiocollars are common practices in studies of large mammals, but success is based on the assumptions that captured animals are representative of the rest of the population and that the capture procedure has negligible effects. We estimated effects of chemical immobilization on mortality rates of African buffalo (Syncerus caffer) in the Kruger National Park, South Africa. We used a Cox proportional hazards approach to test for differences in mortality among age, sex, and capture classes of repeatedly captured radiocollared buffalo. Capture variables did not improve model fit and the Cox regression did not indicate increased risk of death for captured individuals up to 90 days postcapture [exp () = 1.07]. Estimated confidence intervals, however, span from a halving to a doubling of the mortality rate (95% CI = 0.562.02). Therefore, capture did not influence survival of captured individuals using data on 875 captures over a 5-year period. Consequently, long-term research projects on African buffalo involving immobilization, such as associated with research on bovine tuberculosis, should result in minimal capture mortality, but monitoring of possible effects should continue.

Item Details

Item Type:Refereed Article
Keywords:African buffalo, chemical immobilization, game capture, Kruger National Park, survival, Syncerus caffer
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Terrestrial Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Sparseland, Permanent Grassland and Arid Zone Flora, Fauna and Biodiversity
Author:Cameron, EZ (Professor Elissa Cameron)
ID Code:67495
Year Published:2009
Web of Science® Times Cited:5
Deposited By:Zoology
Deposited On:2011-03-04
Last Modified:2011-03-28
Downloads:0

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