• 한국동물학회지
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• 제35권3호
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• pp.271-276
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• 1992

20-hydroxvecdysone (20-HE) seems to be related in the regulation of vitellogenesis in Drosophifa sp. (robwta species sroup). Although yolk proteins (YPs) synthesis does not occur at a high rate in fat body cells of one daw-old female after eclosion, application of 20-HE to isolated abdomens deprived of anterior endocrine glands stimulated the synthesis and secretion of YPs into the hemolvmph. An injection of 0.3 $\mul$ of a 10-s M 20-HE was sufficient topromote synthesis and secretion of YPs in isolated abdomens. The response of isolated automens to hormones was first detected between 2 hr and 3 hr after treaDent of 10-s M 20-HE. Transcript analysis showed that the effect of 20-HE on yolk protein synthesis was mediated at the level of transcription.