Action of Juvenile Hormone on the Cerebral Neurosecretory Cells of Mamestra brassicae in vivo and in vitro
スポンサーリンク
概要
- 論文の詳細を見る
The action of juvenile hormone (JH) on the accumulation and release of neurosecretory material in the cerebral neurosecretory cells of the cabbage armyworm, Mamestra brassicae, was investigated. When a juvenile hormone analogue (JHA, ZR-515) was injected into a 6-day-old last instar larva immediately followng removal of the prothoracic glands, which normally causes the release of neurosecretory material from type II cerebral neurosecretory cells (type II-NSC), release of this material was inhibited and accumulation was observed in the type II-NSC. Conversely, when JHA was injected into the larva 24 hr after removal, of the prothoracic glands, stainable neurosecretory material did not accumulate in the type II-NSC. Brains from 0-, 8-day-old last instar larvae and 1-day-old pupae cultured in vitro in medium containing JHA accumulated ceurosecretory material in the type II-NSC. While, when the effects of JHA on prothoracicotropic hormone (PTTH) release from the brains was examined by the implantation experiments, and the releasing PTTH from the brains of 0-, 6- and 8-day-old last instar larvae was really inhibited by JHA application. These results suggest that in the limited stages, JH inhibits the release of PTTH which seems to be released from the type II-NSC in M. brassicae, but may not affect the synthesis of neurosecretory material in these cells.
- 日本応用動物昆虫学会の論文
- 1978-08-25
著者
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AGUI Noriaki
Department of Medical Entomology, National Institute of Infectious Diseases
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Hiruma Kiyoshi
Institute Of Agriculture And Forestry University Of Tsukuba
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Hiruma Kiyoshi
Institute Of Agriculture And Forestry The University Of Tsukuba
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Agui Noriaki
Department Of Medical Entomology National Institute Of Health
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Agui Noriaki
Department Of Medical Entomology The National Institute Of Health
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YAGI Shigemi
Institute of Agriculture and Forestry, The University of Tsukuba,
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Yagi Shigemi
Institute Of Agriculture And Forestry The University Of Tsukuba
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