Huck U W, Lisk R D, Kim S, Evans A B
Biology Program, Sangamon State University, Springfield, Illinois 62708.
Behav Neural Biol. 1989 Jan;51(1):1-10. doi: 10.1016/s0163-1047(89)90608-0.
After repeated exposure to receptive and nonreceptive females, male golden hamsters were tested for olfactory preferences in a four-choice olfactometer. Males discriminated between the odor of anesthetized females in different stages of their estrous cycle when the airstreams carrying the stimulus odors were diluted. Previous failures to demonstrate such an ability were probably due to ceiling effects resulting from laboratory testing. Males preferred the odor of females on the day before receptivity (a day coincident with maximal scent marking by the female) and least preferred the odor of females on diestrus-1 (the day on which females attacked and chased males during pretesting encounters). Detection and quick response to an impending estrus would be especially important for males of a solitary and promiscuous species in which there is a first male mating advantage.
在反复接触处于接受状态和非接受状态的雌性后，雄性金黄地鼠在四选一嗅觉仪中接受嗅觉偏好测试。当携带刺激气味的气流被稀释时，雄性能够区分处于发情周期不同阶段的麻醉雌性的气味。此前未能证明这种能力可能是由于实验室测试产生的上限效应。雄性更喜欢雌性接受前一天的气味（这一天雌性的气味标记最为强烈），最不喜欢动情间期1的雌性气味（在预测试期间雌性攻击并追逐雄性的那一天）。对于具有“首雄交配优势”的独居且滥交物种的雄性来说，检测并快速响应即将到来的发情期尤为重要。
