Perrot-Sinal T S, Heale V R, Ossenkopp K P, Kavaliers M
Neuroscience Program, Department of Psychology, University of Western Ontario (UWO), London, Canada.
Behav Neurosci. 1996 Oct;110(5):1126-32. doi: 10.1037//0735-7044.110.5.1126.
In this study, a multivariate analysis of the locomotor activity of adult, breeding male and female meadow voles (Microtus pennsylvanicus) was conducted. Overall, male voles made more movements and spent more time in the center of the activity chambers than did female voles. The authors further investigated the effects of brief exposure (3 min) to predator (red fox [Vulpes vulpes]) odor and various control odors (butyric acid, extract of orange) on subsequent activity. Control odors had no effects. Immediately following exposure to the fox odor, male voles exhibited significantly lower levels of activity and decreased center time. No significant changes in any activity variable were observed in the female voles following exposure to fox odor. This study provides evidence for sex differences in both basal activity levels of meadow voles and activity following exposure to a predator odor.
在本研究中，对成年、处于繁殖期的雄性和雌性草甸田鼠（Microtus pennsylvanicus）的运动活动进行了多变量分析。总体而言，雄性田鼠比雌性田鼠有更多的活动，并且在活动箱中心花费的时间更多。作者进一步研究了短暂暴露（3分钟）于捕食者（赤狐[Vulpes vulpes]）气味和各种对照气味（丁酸、橙子提取物）对后续活动的影响。对照气味没有影响。在暴露于狐狸气味后，雄性田鼠立即表现出显著较低的活动水平和在中心区域停留时间的减少。暴露于狐狸气味后，雌性田鼠的任何活动变量均未观察到显著变化。这项研究为草甸田鼠的基础活动水平以及暴露于捕食者气味后的活动中的性别差异提供了证据。
