Popova N K, Amstislavskaia T G, Kucheriavyĭ S A
Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk.
Zh Vyssh Nerv Deiat Im I P Pavlova. 1998 Jan-Feb;48(1):84-90.
Receptive female mouse placed in a cage behind a partition which prevented physical contacts but allowed the female to be smelt and seen produced in CBA and A/He males an elevation of plasma testosterone level and increase in time spent near the partition (TSNP) in attempts to reach the female. Both in CBA and A/He males the TSNP was much higher than in controls with empty adjacent compartment or with a male in it. The number of approaches to the partition was also increased but not sex-depended reflecting the general motor excitement of animals. A 3-4-fold increase in the TSNP preceding blood testosterone elevation was found within the first 10 min of female exposure. It was suggested that sexual motivation in males induced by female exposure was not caused by testosterone increase. The TSNP in male mice produced by female exposure can be used as an adequate index of sexual motivation.
将处于发情期的雌性小鼠置于一个笼子里，笼子被隔板隔开，这阻止了身体接触，但允许雌性小鼠被雄性闻到和看到。在CBA和A/He雄性小鼠中，这会导致血浆睾酮水平升高，并且在试图接近雌性时，靠近隔板的时间（TSNP）增加。在CBA和A/He雄性小鼠中，TSNP都比相邻隔室为空或里面有雄性的对照组高得多。接近隔板的次数也增加了，但不依赖于性别，这反映了动物的一般运动兴奋。在接触雌性的前10分钟内，发现TSNP在血液睾酮升高之前增加了3 - 4倍。有人认为，雌性暴露引起的雄性性动机不是由睾酮增加引起的。雌性暴露引起的雄性小鼠的TSNP可作为性动机的适当指标。
