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Periodical article Periodical article Leiden University catalogue Leiden University catalogue WorldCat catalogue WorldCat
Title:Tsetse Fly Control and the Environmental Implications for Fish in the Okavango Delta, Botswana
Author:Merron, Glenn S.ISNI
Year:1992
Periodical:Botswana Notes and Records (ISSN 0525-5090)
Volume:24
Pages:49-56
Language:English
Notes:biblio. refs.
Geographic terms:Botswana
Southern Africa
Subjects:environment
trypanosomiasis
pesticides
Agriculture, Natural Resources and the Environment
Health and Nutrition
Environment, Ecology
Okavango River Delta (Botswana)
Environmental effects
Fishes
Glossina spp.
External links:https://www.jstor.org/stable/40979916
http://search.proquest.com/pao/docview/1291929830
Abstract:The tsetse fly is a carrier of a deadly parasite which causes sleeping sickness in man and 'nagana' in cattle. Botswana has had a long history of tsetse fly control dating back to the 1940s. In the mid-1970s large-scale aerial spraying of the Okavango Delta was initiated by the Tsetse Control Division (TCD). Since fish provide an important source of protein and revenue for many rural people and are also important in maintaining many ecological processes, a two-year research programme was initiated in July 1989 by the J.L.B. Smith Institute of Ichthyology to assist the TCD with testing the toxicity of various insecticide formulations to fish. The research programme had three primary aims which included identifying the optimal time of year to conduct aerial insecticide spraying operations, discovering the optimum insecticide to spray and determining the best method of spraying. The conclusion was that the use of the ultra low volume, biodegradable deltamethrin formulation applied in 1991, along with an optimal application period and advanced navigational system, has been an improvement over the endosulfan mixture applied in 1989 and 1990. Bibliogr.
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