荒漠沙蜥活动期间的体温节律  

Body Temperature Rhythm in Toad-headed Lizards(Phrynocephalus przewalskii)

作　　者：蒋怡锦 屈彦福[1] JIANG Yi-Jin;QU Yan-Fu(Jiangsu Key Laboratory for Biodiversity and Biotechnology,College of Life Sciences,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]江苏省生物多样性与生物技术重点实验室,南京师范大学生命科学学院,南京310023

出　　处：《动物学杂志》2022年第2期310-315,共6页Chinese Journal of Zoology

摘　　要：爬行动物的体温依赖于外界热环境的变化,本研究以荒漠沙蜥(Phrynocephalus przewalskii)为对象,收集其冬眠前活动期间的体温与地面和离地10 cm的空气温度,研究爬行动物体温节律性变化与环境温度的关系。研究结果表明,荒漠沙蜥在环境温度高于20℃后开始外出活动,其体温随着地面温度和空气温度的上升而逐步上升,但在中午12:00时后体温会低于环境温度且维持在较高的水平,荒漠沙蜥活动期间的体温与地面温度和空气温度具有显著相关性。爬行动物在较短的时间内和较低的环境温度下能够迅速将体温调节至较高的水平,对于保障其充足的捕食时间、有效的逃避天敌和高效的消化功能具有重要意义。Reptiles are ectotherms whose body temperature is impacted by ambient temperatures.We selected the toad-headed lizard(Phrynocephalus przewalskii)as our research objects and collected their activity body temperatures,ground temperatures and air temperatures in the field from September 28 to October 5,2005(Table 1).Statistical analysis showed that there was no significant difference in activity body temperatures between ages and genders.Lizards began to be active when the ambient temperature was higher than 20℃,and the body temperature of lizards increased gradually with time from 8:40 to 12:00(Fig.1).However,after 12:00 pm,the body temperature of lizards was lower than the ground temperature and remained at a high level(Fig.1).The body temperature of lizards during the activity period was significantly correlated with the ground temperature and air temperature(Fig.2).Lizards could quickly adjust their body temperature to a higher level in a short period and at a low ambient temperature,which is of great ecological significance to ensure their sufficient predation time,effective escape from natural enemies as well as efficient digestion.

关 键 词：荒漠沙蜥 活动体温 热生物学 温度节律 

分 类 号：Q958[生物学—动物学]