眼镜蛇人蛰前、蛰眠期和出蛰后血清激素与能量物质代谢的关系

本文研究眼镜蛇入蛰前、蛰眠期及出蛰后血清 T_3,T_4和皮质醇水平与体内能量物质的含量变化关系,探讨其与蛰眠行为的关系。结果表明入蛰前眼镜蛇大量摄食储能过冬,由于血清激素水平降低,控制了体内组织器官的氧化代谢系统,使新陈代谢逐渐下降。蛰眠期血糖血脂明显下降,耗氧量显著减少,呈节能低代谢状态。此期血清激素水平已升高,但低温抑制了体内代谢。出蛰后血清激素水平明显升高且在春暖升温季节使眼镜蛇代谢率升高。

Relationship between Serum Hormone and the Metabolism of Energy Substance in Cobra during Pre-hibernation,Hibernation and Post-hibernation

This study analysed the variations of the serum thyoxine (T_4).triiodothyronine(T_3)and cortisol of cobra(Naja naja Linnaeus)in pre-hibernation hibernation and post hibernation.the variations were compared with the changes of indexes of cobra metabolism in those three periods such as oxygen consumption,serum glucose,serum triglycerlde,glycogen content of liver,and triglyceride content of fat bodies.From pro-hibernation to hibernation the change of metabolic indexes of the cobra indicated that the metabolic rates tends to decline because of the very low levels of the three serum hormones in pre-hibernation and faliing temperature.Low temperature during hibernation limited the activitives of the three serum hormones which were rising at higher levels during hibernation.From hibernation to post-hibernation,the rising temperature allowed the three serum hormones to increase markedly, stimulating metabolism gradually.Therefore the metabolic rate of the cobra during post-hibernation tended to rise again.The metabolic indexes of the cobra in post-hibernation showed a significant increase in the metabolic rate,which had close relation with the high levels of the three serum hormones.The indexes of metabolism of the cobra indicate that it is the hepatic glycogen not fat that hiberhating cobra use as their main energy source.