Domjan M
Behav Neurosci. 1987 Jun;101(3):385-92. doi: 10.1037//0735-7044.101.3.385.
Previous research had shown that reproductively mature male Japanese quail maintained on a 16:08 light/dark (16L:8D) photoperiod spend about 75% of their time throughout daylight hours near a window that provides visual access to a female conspecific. In contrast, females do not display a corresponding tendency to remain near male conspecifics. In Experiment 1, I demonstrated that the social proximity behavior of male Japanese quail declines significantly when photostimulation is restricted to 2 hr daily (02:22 light dark; 2L:22D), but can be restored by reinstituting the 16L:8D schedule. Changes in the photoperiod produced corresponding changes in the size of the cloacal gland, and androgen-dependent organ. The low levels of social proximity behavior and cloacal gland size of males maintained on short daily exposures to light (2L:22D) also could be reversed by sc implants of testosterone (Experiment 2), and this recovery was to some extent sensitive to testosterone dose (Experiment 3). The present studies indicate that social proximity behavior in male Japanese quail is androgen dependent and provide a behavioral assay for neurohormonal studies of sexual behavior that does not depend on brief phasic responses.
先前的研究表明，处于16:08光/暗（16L:8D）光照周期下的生殖成熟雄性日本鹌鹑，在整个白天约75%的时间都待在靠近窗户的地方，通过窗户可以看到同种雌性。相比之下，雌性则没有表现出在同种雄性附近停留的相应倾向。在实验1中，我证明了，当光刺激每天限制在2小时（02:22光照黑暗；2L:22D）时，雄性日本鹌鹑的社会接近行为显著下降，但恢复到16L:8D光照周期时，这种行为可以恢复。光照周期的变化导致泄殖腔腺（一种雄激素依赖器官）的大小发生相应变化。每天短时间光照（2L:22D）下饲养的雄性，其社会接近行为水平较低，泄殖腔腺较小，通过皮下植入睾酮也可以使其恢复（实验2），并且这种恢复在一定程度上对睾酮剂量敏感（实验3）。目前的研究表明，雄性日本鹌鹑的社会接近行为依赖雄激素，并为性行为的神经激素研究提供了一种不依赖于短暂阶段性反应的行为测定方法。
