金色中仓鼠不存在布鲁斯效应  

No Bruce Effect in the golden hamster ( Mesocricetus auratus)

作　　者：王郁婷[1] 赵心[1] 朱水平[1] 刘定震[1] 

机构地区：[1]北京师范大学生命科学学院,生物多样性与生态工程教育部重点实验室,北京100875

出　　处：《兽类学报》2010年第4期418-423,共6页Acta Theriologica Sinica

基　　金：国家自然科学基金资助项目(30770290);教育部留学回国人员启动基金项目

摘　　要：布鲁斯效应是一种由非配偶雄性的化学信号所诱发的雌性妊娠终止现象,曾被认为是雌性对抗雄性杀婴行为的一种进化策略。布鲁斯效应最初在实验小鼠中发现。后续的研究证明了在实验室条件下多种啮齿类动物中存在布鲁斯效应。布鲁斯效应是否为实验室啮齿类动物中存在的普遍规律,目前尚无定论。本实验首先探讨了布鲁斯效应在金色中仓鼠中是否存在。在交配之后给予实验组雌鼠陌生雄鼠的非直接接触刺激,对照组雌鼠接受配偶雄鼠的非直接接触刺激。同时还测定了雌鼠的体重、胚胎质量以及生理器官(肾上腺、脾脏、卵巢和子宫)质量。结果显示,实验组雌鼠的流产率、体重、胚胎质量、生理器官(肾上腺、脾脏、卵巢、子宫)质量与对照组不存在显著差异。本实验结果表明:陌生雄鼠的化学信号对雌性金色中仓鼠的怀孕状态没有影响,实验室条件下的金色中仓鼠不存在布鲁斯效应。The Bruce Effect is a type of pregnancy block caused by chemosignals emitted by unfamiliar males. It is thought to be an adaptation in females that prevents male from committing infanticide. This phenomenon was first discovered in mice （ Mus musculus） by Hilda M. Bruce,and has been tested in many other species of rodents with mixed results. Whether the Bruce Effect is a common phenomenon in laboratory rodents is unknown. Here,we tested weather the Bruce Effect occurs in golden hamsters （ Mesocricetus auratus） by exposing pregnant female hamsters to either hovel males or their mates one day after mating. We also measured female mass,average embryo mass,adrenal gland,spleen,ovary and uterus to determine if pregnant females became stressed after being exposed to novel males. We found no difference in the percentages of postabort,body weight,embryo mass and the mass of organs （ adrenal gland,spleen,ovary and uterus） between the treatment and control female groups. Our results show that the Bruce Effect does not exist in golden hamsters,and thus is not common to all laboratory animals.

关 键 词：布鲁斯效应 金色中仓鼠 气味暴露 妊娠中断 

分 类 号：Q954[生物学—动物学]