BECK S D, ALEXANDER N
Science. 1964 Jan 31;143(3605):478-9. doi: 10.1126/science.143.3605.478.
A new endocrine function has been shown to play a role in insect morphogenesis. The hormone named proctodone is secreted by specialized cells of the hindgut and appears to affect the brain, resulting in the activation of the brain hormone-producing system. Proctodone has been found in two lepidopterous species-Ostrinia nubilalis and Galleria mellonella. In the O. nubilalis, proctodone plays a part in both photoperiodism and diapause.
一种新的内分泌功能已被证明在昆虫形态发生中起作用。名为直肠抑制素的激素由后肠的特化细胞分泌，似乎会影响大脑，从而激活产生脑激素的系统。在两种鳞翅目昆虫——欧洲玉米螟和大蜡螟中发现了直肠抑制素。在欧洲玉米螟中，直肠抑制素在光周期现象和滞育中都起作用。
