Biological Institute, Faculty of Science, Nagoya University, Nagoya, 464, Japan.
Proc Natl Acad Sci U S A. 1982 Apr;79(8):2726-30. doi: 10.1073/pnas.79.8.2726.
In the moth Samia cynthia ricini, timing of the release of prothoracicotropic hormone is controlled by a circadian clock in the cephalic organ (brain); while this hormone release is necessary for gut purge, the final timing of this event is controlled by a circadian clock in the prothoracic glands that gates release of ecdysone. The photoreceptor of the prothoracic gland clock(s) is extraocular and evidently in the glands themselves. Demonstration that the clock and its photoreceptor are in the prothoracic glands is based on a mixture of localized illuminations and the transplantation of glands from one larva to another.
在蓖麻蚕 Samia cynthia ricini 中，前胸腺促激素的释放时间由头部器官（大脑）中的生物钟控制；虽然这种激素的释放对于肠道清除是必要的，但这个事件的最终时间是由前胸腺中的生物钟控制的，它控制着蜕皮激素的释放。前胸腺钟（多个钟）的光感受器是眼外的，显然在腺体本身中。时钟及其光感受器位于前胸腺中的证明是基于局部照明的混合物和从一个幼虫到另一个幼虫的腺体移植。
