ショクガタマバエの成虫と幼虫に対する各種農薬の影響

抄録

We tested the effects of 40 insecticides, 11 acaricides, and 13 fungicides on adults of Aphidoletes aphidimyza (Rondani) (Diptera: Cecidomyiidae) by a residual-contact method in test tubes at 24± 1°C in the laboratory. Adults were reared in test tubes treated internally with aqueous dilutions of a pesticide. Some pesticides were also tested on middle-stage larvae by direct dipping. The period of residual toxicity of pesticides that showed high toxicity to adults was tested by rearing larvae on cucumber leaves on which pesticide had been sprayed beforehand. All insecticides showed toxicity to adults. The neonicotinoid group insecticides imidacloprid. nitenpyram, acetamiprid, and thiamethoxam showed high toxicity to adults, but three other insecticides in that group showed moderate toxicity. Chlorfenapyr, cartap, and spinosad showed high toxicity. Some or ganop hosp hate and pyrethroid pesticides showed high toxicity to larvae. Permethrin and chlorfenapyr showed high residual toxicity for more than 7 days after spraying. The residual toxicity of 11 other pesticides became low within 3-7 days. Insecticides in the insect growth regulator group except novaluron, acaricides except tebufenpyrad, fungicides, starch, tolfenpyrad, and indoxacarb showed low or no toxicity.