A Strategy for an Area-Wide Control Campaign with an SIT Component to Establish a Tsetse- (Glossina austeni and Glossina brevipalpis) Free South Africa
A strategy is proposed to create an area free of Glossina brevipalpis Newstead and Glossina austeni Newstead in the southern-most tsetse fly belt in the province of KwaZulu-Natal, South Africa. The concept is based upon an area-wide integrated pest management (AW-IPM) approach that integrates several tsetse suppression techniques, such as insecticide impregnated odour-baited targets, mobile targets, the sequential aerosol technique (SAT), and the release of sterile insects (sterile insect technique (SIT)). The prerequisites for the proposed programme are described and include the development of sampling and control tools, ecological studies, entomological field surveys, feasibility studies and the development of adequate tsetse rearing capacity. The proposed AW-IPM strategy suggests the division of the 12 000 square kilometre tsetse-infested area into four zones of manageable size and the successive implementation of four phases (pre-suppression, suppression (population reduction), release of sterile males and post-eradication activities) in each of these zones following the "rolling carpet principle". Assuming a minimum release density of 100 sterile males per square kilometre, tsetse colonies of around 4.5 million producing G. brevipalpis females, and 5.5 million G. austeni would be required to sustain the releases. The entire programme would require an annual budget of USD 3.35 million for the duration of eight years. The creation of a tsetse fly-free area in South Africa and southern Mozambique would result in significant improvements to the livelihood of communal farmers owning around 350 000 cattle.
KEYWORDS KwaZulu-Natal, South Africa, Glossina austeni, Glossina brevipalpis, tsetse-free area, area-wide eradication, feasibility, strategy
KeywordsInternational Atomic Energy Agency Sterile Male Sterile Insect Technique Entomological Research Tsetse Control
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