Adult Development Induced by the Injection of Non-Hormonal Agents into Brainless Pupae of Silkworms

概要

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Numerous solutions of non-hormonal agents have been injected into debrained test pupae of Bombyx and Samia. Bombyx (N122×C115) pupae were debrained sthortly after pupation and injection was performed within 4-5 weeks after operation. Though intact brainless pupae remained largely unchanged, the pupae injected with non-hormonal solutions underwent adult development with a high rate for 2-4 weeks after the injection. When deionized water or buffers were injected, the emergence rate averaged about 17%. A higher rate was found in pupae injected with a series of light metal solutions or with amino acids. Injection of solutions containing heavy metals led in remarkably high percentage of the test Bombyx to imagos. The highest rate, 67% (average), was found after injection of ferrous or ferric ions.Removal of Samia brain was performed between 12-48 hr after pupation and the resulting diapausing pupae were injected some time between 2-6 months after the operation. The brainless pupae of Samia, unlike Bombyx pupae, scarcely developed into adult form after the injections. However, after injection of solutions containing ferrous or ferric ions, even Samia pupae developed into adults with a percentage rate of five or six.
日本応用動物昆虫学会の論文
1972-12-25