摘要
对荒漠沙蜥成体代谢率和心率等生理指标的温度适应性进行了研究,旨在检测不同温度下成体荒漠沙蜥的静止代谢率、心率和呼吸频率的差异.结果显示:成体荒漠沙蜥的静止代谢率和心率随外界温度的升高而明显上升,但呼吸频率的上升并不显著.雌雄两性间,雄性蜥蜴呼吸频率对温度变化的依赖性比雌性的略强,且35?C下雄性的代谢率显著高于雌性的.这些生理特征与荒漠沙蜥的生境和活动特点直接相关.我们推测25～35?C荒漠沙蜥可能更多地依赖于提高心率和增加血流量来调整代谢率.
Thermal fitness of resting metabolic rate, heart rate and respiration rates were investigated in adult oviparous lizard Phrynocephalus przewalskii under different temperatures. Resting metabolic rate and heart rate of adult P. przewalskii notably increased with temperature, while respiration rate was not significantly different. Compared with females, the respiration rate of males was more sensitive to temperature, which might be related to the active characteristics of male P. przewalskii, the metabolic rate of males was positively higher than that of females under 35℃. We speculated that P. przewalskii may rely more on increased heart rate and blood flow to adjust its metabolic rate at 25–35℃.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第6期860-863,共4页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(31272313
31071918)
关键词
静止代谢率
心率
呼吸率
温度适应性
荒漠沙蜥
resting metabolic rate
heart rate
respiration rate
thermal fitness
Phrynocephalus przewalskii
