• • 上一篇    下一篇

雌性布氏田鼠对不同共居时间雄性气味的识别与记忆

熊彦 李麒麟 金延飞 张立   

  1. 北京师范大学生命科学学院
  • 出版日期:2013-02-27 发布日期:2013-02-20

Female Brandt’s vole’s memory and recognition of male individual odors in different cohabitation periods

XIONG Yan,LI Qilin,JIN Yanfei,ZHANG Li   

  • Online:2013-02-27 Published:2013-02-20

摘要: 啮齿动物的社会识别包括对化学信号的辨别、学习和记忆。田鼠属动物雌雄成年个体共居一定时间后,可以利用气味信号来识别配偶。本研究将成年雌雄布氏田鼠配对饲养12 h、18 h、24 h,确认发生交配行为形成配对关系后,分开单独饲养6 h,取配偶雄鼠和陌生雄鼠巢垫物作为个体气味,在气味选择箱中观察雌鼠对配偶雄鼠和陌生雄鼠气味信号的探究和选择行为,从而探讨不同共居时间雌性布氏田鼠对配偶气味信号的识别与记忆的影响。研究结果表明:共居时间影响雌性布氏田鼠对配偶气味的识别与记忆;共居时间越长,雌鼠在气味探究和选择时间上对配偶气味偏好越明显;共居24 h 后,雌性布氏田鼠能够识别出配偶雄鼠的气味信号并形成记忆,这样的记忆维持时间至少是6 h。

关键词: 共居, 布氏田鼠, 气味, 识别, 记忆

Abstract: Chemical signals play important roles in the social recognition of rodents including individual identification,learning and memory. Males and females may recognize each other after cohabiting for a period of time. The research studiedthe effect of the cohabitation duration on the memory and the recognition of female Brandt’s vole (Lasiopodomys
brandtii
) . Male and female voles were kept in mating pairs and cohabited for 12 hours,18 hours and 24 hours together. After being separated for 6 hours,both spouse and novel males’individual odors were presented to female voles for a 20 minute odor preference test. The results showed that females spent more time staying in the observation box with spouse odors,and their odor investigating behaviors on spouse male odors were also more than those on novel male odors. The duration and frequency of females’ investigating behaviors were significantly related to the cohabitation duration with their mates. These results suggest that female Brandt’s voles can remember and recognize their mates after 24-hour cohabitation, and the female vole’s olfactory memory can be maintained at least 6 hours or more.

Key words: Brandt’s voles (Lasiopodomys brandti), Cohabitation, Memory, Odor, Recognition