Managing the elephants of Kruger National Park


Journal Article

The elephant population in Kruger National Park, Republic of South Africa, is growing rapidly. To prevent damage to the Park's ecosystems, the management has culled about 7% of the population annually. Such culls are very controversial. At first glance, contraceptives seem an attractive alternative means of control. We examine contraception as a management option, review the relevant aspects of elephant reproduction, physiology and demography and conclude that this optimism is probably misplaced. First, contraceptives have a wide range of physiological and behavioural side-effects that may prove to be damaging to the individual female and those around her. Second, the elephants in the Park have near-maximal growth rates with inter-calving intervals of less than four years. To achieve zero population growth, about three-quarters of the adult female elephants would need to be on contraceptives. There are no simple alternatives. The smallest numerical target for controlling population numbers is to kill or sterilize females about to become pregnant for the first time. Such a solution is unlikely to appease those who consider killing elephants to be unethical. It may, however, be the one closest to the natural patterns of elephant mortality.

Full Text

Duke Authors

Cited Authors

  • Whyte, I; Van Aarde, R; Pimm, SL

Published Date

  • January 1, 1998

Published In

Volume / Issue

  • 1 / 2

Start / End Page

  • 77 - 83

International Standard Serial Number (ISSN)

  • 1367-9430

Digital Object Identifier (DOI)

  • 10.1017/S1367943098000018

Citation Source

  • Scopus