Role of Juvenile Hormone in the Control of Summer Diapause in Adult Poecilocoris lewisi (Heteroptera: Scutelleridae)

青春激素在紅條綠盾背椿象成蟲夏季休眠的調控角色

Ryo Miyawaki ； Shinichi I. Tanaka ； Hideharu Numata

《台灣昆蟲》 26卷1期 (2006/03) Pp. i+1-10

https://doi.org/10.6661/TESFE.2006001

摘要

A radiochemical method was adopted to analyze in vitro products of the corpora allata (CA) of adult females in Poecilocoris lewisi, which showed an adult summer diapause under long-day conditions. Synthetic activity of juvenile hormone (JH) by the CA increased earlier in nondiapause than in diapause adult females. When the CA of a nondiapause adult female was implanted, or a JH analogue, pyriproxyfen, was applied to diapause adult females, their ovaries developed. Therefore, JH plays a crucial role in the hormonal control of adult summer diapause in P. lewisi. Moreover, because ovaries developed to a stage slightly advanced from the diapause stage before the increase in JH-synthetic activity occurred in nondiapause adults, the possibility of the involvement of other factors in the control of ovarian development is also suggested.

關鍵字

juvenile hormone ； corpus allatum ； adult diapause ； summer diapause

並列摘要

紅條綠盾背椿象雌成蟲在長日照環境下，會進行夏眠。本研究利用一種放射性化學分析法，在體外檢測進入夏眠的紅條綠盾背椿象雌成蟲咽喉側腺合成之青春激素。非夏眠雌成蟲咽喉側腺加速合成青春激素的作用比夏眠者發生的早。將非夏眠雌成蟲的咽喉側腺移植至正在夏眠的雌成蟲，或予以注射青春激素類似物（pyriproxyfen），均會引起雌成蟲的卵巢發育。此項結果顯示青春激素在紅條綠盾背椿象夏眠的控制上，扮演關鍵的角色。此外，紅條綠盾背椿象雌成蟲在青春激素合成作用增高之前，其卵巢即發育至一特定階段，而將進入夏眠的雌成蟲，其卵巢發育在此時期較為落後。因此可能有其他因子參與卵巢發育的控制，一併在文中討論。

並列關鍵字

青春激素 ； 咽喉側腺 ； 成蟲休眠 ； 夏季休眠