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Mating performance of Glossina palpalis gambiensis strains from Burkina Faso, Mali, and Senegal

Mutika G.N., Kaboré I., Seck M.T., Sall B., Bouyer J., Parker A.G., Vreysen M.J.B.. 2013. Entomologia Experimentalis et Applicata, 146 (1) : p. 177-185.

DOI: 10.1111/j.1570-7458.2012.01305.x

The mating performance of Glossina palpalis gambiensis Vanderplank (Diptera: Glossinidae) mass-reared in Burkina Faso (BKF strain) was compared with that of target populations originating from the Bamako peri-urban area of the Niger River Basin, Mali (MLI strain) and the Niayes area, Senegal (SEN strain). The tests were carried out using a field cage either set up outdoors in Burkina Faso or inside the laboratory in Austria. The target population strains (MLI and SEN) were a few generations from the wild whereas the laboratory-reared flies (BKF) were adapted to laboratory rearing over many generations. The laboratory-reared BKF strain significantly out-competed the MLI strain in the mating tests, but showed close to equal competitiveness with the SEN strain. At least one-third of possible matings occurred during each observation period. The females from the two target populations readily mated with males from the BKF strain. The selected mating parameters and behaviour in the cage showed that there was mating compatibility between the strains and this absence of obvious mating barriers indicates the potential of using BKF strain males in programmes that have a sterile insect technique (SIT) component targeting the two G. p. gambiensis populations of Mali and Senegal.

Mots-clés : glossina palpalis; lutte intégrée; performance de reproduction; stérilisation; maladie transmise par vecteur; mali; burkina faso; sénégal

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