光周期和性腺激素会影响雄性草原田鼠（Microtus pennsylvanicus）的气味偏好。

Photoperiod and gonadal hormones influence odor preferences of the male meadow vole, Microtus pennsylvanicus.

作者信息

Ferkin M H, Gorman M R

机构信息

Department of Psychology, University of California, Berkeley 94720.

出版信息

Physiol Behav. 1992 May;51(5):1087-91. doi: 10.1016/0031-9384(92)90098-m.

DOI:10.1016/0031-9384(92)90098-m

PMID:1615048

Abstract

Male meadow voles housed in a long photoperiod (14 h light/day, LP) preferred female to male odors, whereas males maintained in a short photoperiod (10 h light/day, SP) did not display preferences for odors of either sex. These odor-preference patterns matched those of free-living males during spring and autumn, respectively. The preference of LP male voles for female over male odors was eliminated by gonadectomy and reinstated by treatment with testosterone. In SP males, although gonadectomy did not affect odor choices, a preference for female odors was induced by testosterone treatment. Treatment with estradiol did not alter odor preferences of LP or SP males. In conjunction with previous result, the present findings suggest that hormonal responsiveness of neural substrates that control odor preferences are sexually dimorphic and may reflect sex differences in reproductive strategies.

摘要

饲养在长光照周期（14小时光照/天，LP）下的雄性草甸田鼠更喜欢雌性气味而非雄性气味，而饲养在短光照周期（10小时光照/天，SP）下的雄性则对两性气味均无偏好。这些气味偏好模式分别与自由生活的雄性在春季和秋季的模式相匹配。LP雄性田鼠对雌性气味而非雄性气味的偏好通过去势被消除，并通过睾酮治疗得以恢复。在SP雄性中，虽然去势不影响气味选择，但睾酮治疗诱导了对雌性气味的偏好。雌二醇治疗并未改变LP或SP雄性的气味偏好。结合先前的结果，目前的研究结果表明，控制气味偏好的神经基质的激素反应具有性别二态性，可能反映了生殖策略中的性别差异。