ルビーアカヤドリコバチ第1世代の蛹に対する農薬の影響

抄録

1. Laboratory tests were conducted using dipping method to reveal the effects of insecticides on the second generation pupae of Anicetus benefzcus IsHII et YASUMATSU, the most effective parasite of Ceroplastes rubens MASKELL in citrus groves.
2. The insecticides, which had poisonous effects on the pupae inside the scale body and reduced the emergence of parasites, were Parathion, Malathion and Fussol (monofluoroacetamide 10%). Kelthane, Mikagin (CPAS 25%, DDDS 10%, DCPM 15%), Phencapton (CMP 18 %), EPN, Ekatin (Thiometon 20%), Bayer-4741, Methyldemeton, Dimethoate and Sevin were not effective when applied during the pupal stage of parasites.
3. Parathion and Malathion reduced the emergence of parasites for more than 20 days-after treatments. Fussol was effective only for the first 5 or 10 days.
4. Of the five systemic insecticides tested on pupae of parasites, Fussol was found most effective. It is believed that Fussol is better able to penetrate the covering wax of the scale than the other systemic insecticides.