【摘要】 本文主要利用艾虎（Mustila eversmanni）气味作为捕食风险源，于1997年4月至12月在中国科学院西北高原生物研究所生态学实验室，研究其对根田鼠（Microtus oeconomus）社会行为、觅食、繁殖和性激素的影响。结果表明，当暴露于艾虎气味中时，根田鼠产生繁殖迟滞，且交配行为的频率显著降低(P<0.01)。与对照组相比较，雌体亲密行为和两性一般动作的累积时间显著增加（P<0.01）。两性一般动作（P<0.01）、探究活动（雌体：P<0.05；雄体：P <0.01）和自我修饰（P <0.01）的频次显著降低。同时，根田鼠能量的摄入（P<0.05）和体重（P<0.01）都显著降低。雌体的卵巢指数和胎仔重量也显著降低（P<0.01），雄体的附睾精子数则极显著降低（P<0.01）。艾虎气味条件下，根田鼠雌体的血清孕酮显著增加（P<0.01）。更多还原

【Abstract】 From April to December in 1997 at Northwest Plateau Institute of Biology, Chinese Academy of Science, the effect of predation risk on social behavior, feeding, reproduction and sexual hormones of the root voles (Microtus oeconomus) was studied when the root voles (Microtus oeconomus ) were exposed to the odor of fitch (Mustila eversmanni). The results showed that the root voles delayed breeding period and the frequency of the copulation significantly lowered (P<0.01). Comparing with the control group, the accumulated time of amicable behavior in females, and general activity of both sexes increased significantly (P<0.01). The frequencies of general activity (P<0.01), investigating activity (females: P<0.05, males: P<0.01), and self-grooming (P<0.01) of both sexes were less significantly. At the same time, the amount of energy intake (P<0.05) and body weight (P<0.01) of the root voles decreased significantly. The litter weight and ovary index of females decreased (P<0.01). For males the sperm count in epididymides also decreased significantly (P<0.01). The progesterone in the blood serum of root voles females increased significantly under fitch odor (P<0.01).更多还原