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Identification of host plants and evaluation of endogenous populations of fruit fly parasitoids in central Senegal

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OmarBob Nash
Title: Identification of host plants and evaluation of endogenous populations of parasitoids of fruit flies in central Senegal
Summary
The production of mangoes is of prime importance in Senegal as well for the local market as for export. However this production is experiencing a drop in quality caused by bites of fruit flies. For a new orientation of the methods of control that could improve their effectiveness, we were interested in the identification of the host plants and the evaluation of the endogenous populations of parasitoids of fruit flies. The work was carried out at 7 sites in the agro-ecological zone of central Senegal from July to October. In each site, fruits were regularly collected and incubated. After hatching pupae extracted from the samples, emergencies are identified and counted. A total quantity of 13284 pupae was harvested with a number of emergence of 7785 fruit flies. The identification of these emergencies revealed the presence of three species of Tephritidae, including Bactrocera dorsalis, Ceratitis Cosya and Ceratitis capitata. Indeed, the species of Tephritidae were found on 5 species of plants: Capsicum frutescens, Cordyla pinnata, Citrus sinensis, Ficus ingens and Mangifera indica. In addition to the mango tree, Cordyla pinnata had a higher infestation rate than other host plants of B. dorsalis and C. cacosia. F. Ingens identified for the first time as a host plant of B. dorsalis in Senegal, is a woody used as a shading plant that has an important place for the multiplication of flies. The presence of parasitoid was not noted on the various samples collected. The plants listed as hosts of fruit flies have periods of fruiting observed outside those of mangoes.
Keywords: Tephritidae, host plants, parasitoids, Mango, central Senegal