Document Type : Agricultural Entomology
Authors
1 Azad
2 Department of Agricultural Entomology, Iranian Research Institute of Plant Protection.
3 iranian
Abstract
The wasp Habrobracon hebetor Say, 1836 (Hymenoptera: Braconidae) is one of the important parasitoids which is used for the biological control of moth larvae of the Pyralidae and Noctuidae families, including agricultural, garden and storage pests. In this study, the lethal effects of tetranylprole, flupyradifuran, flubendiamide and spirotetramat insecticides were studied by contact method on adult insects and dipping method on the parasitoid wasp pupa of H. hebetor. Parasitoid wasp rearing was carried out on the larvae of the mediterranean flour moth in a growth chamber with temperature conditions of 27 2, relative humidity 65 5 percent and photoperiod (16:8) hours of light and dark. Bioassay tests were performed on adult insect stages and wasp pupa in 5 repetitions on different days. According to the results, the LC50 on adult insects was estimated to be 233, 966, 5444 and 679 ppm for tetranilyprole, flupyradifuran, flubendiamide and spirotetramat, respectively. The survival rate in the dipping method for the insecticides tetranylyprole, flupyradifuran, flubendiamide and spirotetramat was 32.6,13.3, 16.0 and 19.7 percent, respectively. The study of the effect of the tested pesticides showed that tetranylprole insecticide showed the highest toxicity,while flubendiamide pesticides showed the lowest toxicity on the adult stage. Also, the highest and lowest tolerance against insecticides in the pupa life stage was related to the insecticide flubendiamide, which was more tolerant than the adult stage. If field tests are conducted and these results are confirmed, it seems that flupyradifuran and flubendiamide insecticides can be a suitable option for integrated pest management.
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