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CHANGE OF SENSORY RESPONSIBILITY DURING THE C0URSE 0F HIBERNA-ING B0UT IN GROUND SQUIRREL CITELLUS DAURICUS

WU Yuying, CAI Yipeng   

  • Online:2006-08-09 Published:2007-07-20

达乌尔黄鼠冬眠阵过程中感觉兴奋性的变化

吴宇英, 蔡益鹏   

  1. 北京大学生物系

Abstract: The sonsitivity of the ground squirrel C.douricus during the course of hibernating bout has been determined by shift of heart rate and body temperature in response to the cutaneous ectrical stimuli.Three distinct types of response were observed:Type I,a transient but obvious increase in heart rate in 5- 10 minutes.no observaible change in Ts.Type I,partial arousal, significant rise in heart rate(20-40/mln.)and Ts(0.2-2.6℃ ), returned to basal line of pre-stimulate level after 20 minutes at least.Type Ⅱ ,ful1 arousa1.rise of heart rate and Ts without any return untill euthermic level,resulted in arouse within about 120 rain.The stimulating intensity needed for evoking the same type of response tended to decline in successive parts of a bout especially in the later part,which indicated the gressive irritability of this animal in hibernating bouts just as some hibernators reported.

Key words: Ground squirrel(Citellus dauricus), Hibernnating bout, Irritability

摘要: 对冬眠阵中的达乌尔黄鼠施加皮肤电刺激,以心率和体温的交化作指标,发现冬眠黄鼠3种类型的兴奋反应。本实验还发现诱发兴奋性反应的刺激强度在冬眠阵后期有明显的下降趋势,说明随冬眠阵进行达乌尔黄鼠的感觉兴奋性是逐步升高的,即具有 “累进的应激性”现象。

关键词: 黄鼠, 冬眠阵, 感觉兴奋性