An Assessment of the Impact of Chemical Insecticides Used to Control Desert Locust (Schistocerca gregaria) (Orthoptera, Acrididae) on Lacertid Lizard Acanthodactylus spp (Sauria, Lacertidae) in Niger

Abstract

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