oa Journal of the Entomological Society of Southern Africa - The susceptibility of Pauridia peregrina Timb. (Hymenoptera: Encyrtidae) to some pesticide formulations



While the toxicities of a great many pesticides to insects of economic importance are well known, the effect of these materials on beneficial insect species has received little study. Attention has been drawn to this aspect, however, by the now familiar shortcomings of chemical control measures. The broader implications of imposing insecticides indiscriminately on insect populations include the elevation of some formerly innocuous insects to pest status. Resurgences of pest species at which control was aimed may also occur. Both these phenomena may be attributed to the virtual elimination of natural insect enemies from the environment by broad spectrum insecticides.


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