Effects of Pesticides on Four Native Generalist Phytoseiid Species（Acari: Phytoseiidae）

Kishimoto Hidenari, Yaginuma Katsuhiko, Toyama Masatoshi

doi:10.1303/jjaez.2018.29

<p>A new artificial arena was developed for efficient toxicological tests of generalist phytoseiid species. The toxicity of 22 insecticides and 7 acaricides was tested against four native species, Amblyseius eharai Amitai and Swirski, Amblyseius tsugawai Ehara, Euseius sojaensis（Ehara）, and Typhlodromus vulgaris Ehara, which are abundantly found in fruit orchards in Japan. Flubendiamide, chlorantraniliprole, cyantraniliprole, diflubenzuron, teflubenzuron, flonicamid, and pyrifluquinazon were harmless or slightly harmful to the survival and fecundity of adult females and immature individuals in all four species tested in this study. Buprofezin and Bacillus thuringiensis were also slightly toxic to adult females and immature individuals except those of E. sojaensis. All neonicotinoids had little effect on the survival of adult females but they reduced the fecundity. Although the effects of neonicotinoids on the fecundity and survival of immature individuals varied among the different chemicals and phytoseiid species, thiacloprid and dinotefuran were moderately toxic to all four species. Thiamethoxam was also moderately toxic for all species except E. sojaensis. Fenitrothion, permethrin, bifenthrin, silafluofen, spinosad, and spinetoram were toxic to all four species. Among acaricides, cyflumetofen and pyflubumide were nontoxic or slightly toxic to all four species. Furthermore, cyenopyrafen was nontoxic or slightly toxic to adult females and immature individuals except immature E. sojaensis.</p>

Effects of Pesticides on Four Native Generalist Phytoseiid Species（Acari: Phytoseiidae）

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