カイコガ除脳蛹の発育におよぼすイミダゾール化合物投与の影響

概要

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Effect of imidazole compounds (KK-42 and KK-62) on the pupal-adult development of brainless pupae of the silkworm, Bombyx mori, was investigated. The duration of the pupal-adult development of the pupae treated with the imidazole compounds was prolonged. Especially, the influence of the KK-42 treatment on the development was more conspicuous than that of the KK-62 treatment. When KK-42 or KK-62 was applied to the pupae whose brains had been extirpated just after pupation, the pupal-adult development was arrested in almost all of the insects. Higher rates of dauer pupae were obtained by the injection than by the topical application of the imidazole compounds. In the pupae which received more than 25 μg of KK-42 immediately after brain extirpation pupal-adult development was not initiated. However when the brain extirpation was performed 5 days after the KK-42 treatment, the pupae started to develop into adults. Although the application of exogenous 20-hydroxyecdysone was able to induce the pupal-adult development in the KK-42-treated brainless pupae at any time, the response of the animals to the exogenous prothoracicotropic hormone (PTTH) was not restored until 6 to 7 days after the KK-42 treatment. It is suggested that the brainless pupae treated with KK-42 may be useful materials for the bioassay of PTTH and for investigations on insect hormones.
日本応用動物昆虫学会の論文
1988-11-25