Acute Toxicity of Locust Insecticides to Two Indigenous Invertebrates from Sahelian Temporary Ponds

摘要

During desert locust plagues large amounts of insecticides are used for control operations. Drift from treatments and accidental overspraying may contaminate small surface waters such as temporary ponds. The present study describes methods for static acute toxicity tests with two abundant organisms that occur in temporary ponds in the African Sahel region: the fairy shrimp Streptocephalus sudanicus Daday(Branchiopoda, Anos- traca, Streptocephalidae)and the backswimmer Anisops sardeus Herrich-Schaffer(Hemipera, Notonectidae). The organisms Were captured in the field and 48-h static toxicity tests were Conducted in the laboratory.