Implementing immunocontraception in free-ranging African elephants at Makalali Conservancy

Show simple item record Delsink, Audrey K. Van Altena, J.J. Grobler, D. Bertschinger, Hendrik Jan Kirkpatrick, Jay F. Slotow, Robert
dc.coverage.spatial Africa en 2008-05-06T10:22:31Z 2008-05-06T10:22:31Z 2007-03
dc.description.abstract The goal of programmes to provide contraception for elephants should be to formulate an approach that does not require the relocation or immobilisation of the same individual year after year, which would be long-lasting and cause minimal disruption to social and reproductive behaviour. The programmes should be simple to administer, safe and cost-effective, and must meet the objectives defined by managers in the field. An immunocontraceptive programme was initiated in a small free-roaming population of elephants at the Greater Makalali Private Game Reserve in Limpopo Province in 2000 to determine whether the porcine zona pellucida (pZP) vaccine can successfully control population sizes. Further objectives were to determine implementation costs and efficiency through a multi-faceted approach. We have demonstrated that immunocontraception meets the objectives set by managers in the field. Minimal social disruption was observed over the course of treatment, with the mode of delivery (ground or aerial vaccinations) determining the degree of stress within herds and speed of resumption of normal movement patterns. Aerial vaccinations resulted in the least disturbance, with target herds being approachable within a day. In 2005, implementation costs were R880-R1000 / elephant / year, inclusive of darts, vaccine, helicopter and veterinary assistance. Irrespective of the source or method of vaccine delivery, a non-pregnant elephant is rendered infertile from 1st vaccine administration. The sooner immunocontraception is implemented, the sooner population growth rates can be controlled. pZP contraception is a realistic alternative management tool, particularly if used as part of a long-termmanagement strategy. Mass-darting from the air eliminates the need for detailed individual histories of each elephant or for employing a person to monitor elephants. Thus, implementation of immunocontraception in larger populations is feasible and practical. en
dc.format.extent 199976 bytes
dc.format.mimetype application/pdf
dc.identifier.citation Delsink, AK, Van Altena, JJ, Grobler, D, Bertschinger, HJ, Kirkpatrick, JF & Slotow, R 2007, 'Implementing immunocontraception in free-ranging African elephants at Makalali Conservancy', Journal of the South African Veterinary Association, vol. 78, no. 1, pp. 25-30. [] en
dc.identifier.issn 0038-2809
dc.language.iso en en
dc.publisher South African Veterinary Association en
dc.rights South African Veterinary Association en
dc.subject Elephant management en
dc.subject African elephant en
dc.subject Population control en
dc.subject PZP implementation en
dc.subject Loxodonta africana
dc.subject.lcsh Elephants en
dc.subject.lcsh Elephants -- Population -- Environmental aspects en
dc.title Implementing immunocontraception in free-ranging African elephants at Makalali Conservancy en
dc.type Article en

Files in this item

This item appears in the following Collection(s)

Show simple item record