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Évaluation des effets des pesticides utilisés en lutte chimique contre le Criquet pèlerin sur les fourmis au Niger. control desert locust are not specific to locusts. They have noxious effects on ecological useful insects like ants. Ants could serve as biological indicators of the presence of a xenobiotic substance, in particular chemical insecticides, in an environment, because the reduction of their population exceeds the 98% 12 days after treatments.

Chemical treatments still constitute the main method used to control desert locust during the invasion phases. In addition to their relatively high costs, these pesticides are not target specific in the majority of the cases; they can have negative effects on the biotic and abiotic components of the ecosystem. The goal of our study, conducted under natural conditions, was the assessment of the ecological effect of ethyl chlorpyrifos and fenitrothion, the most widely used organophosphate pesticides in desert locust control in Niger. To assess the impact of pesticides on the relative abundance of lacertid lizard Acanthodactylus boskianus and Acanthodactylus sp before and after treatments, we used the method of pedestrian transect. The analysis of the variance was used to carry out a statistical comparison based on BACI (Before-After-Control-Impact) method. The experiments were carried out in a randomized complete block design with three replications. The