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Thermal preference, thermal tolerance and the thermal dependence of digestive performance in two Phrynocephalus lizards （Agamidae）, with a review of species studied

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Current Zoology 2011年第6期57卷 684-700页

作者： Yanfu QU Hong LI Jianfang GAO Xuefeng XU Xiang JI Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University Nanjing 210046 Jiangsu China Hangzhou Key Laboratory for Animal Adaptation and Evolution School of Life Sciences Hangzhou Normal University Hang zhou 310036 Zhejiang China School of Biology and Food Engineering Chuzhou University Chuzhou 239012 Anhui China

We reported data on thermal preference, thermal tolerance and the thermal dependence of digestive performance for two Phrynocephalus lizards （P. frontalis and P. versicolor）, and compared data among lizards so far studied worldwide. Mean values for selected body temperature （Tsel） and critical thermal maximum （CTMax） were greater in P versicolor, whereas mean values for critical thermal minimum （CTMin） did not differ between the two species. The two lizards differed in food intake, but not in food passage time, apparent digestive coefficient （ADC） and assimilation efficiency （AE）, across the experimental tem- peratures. Four general conclusions can be drawn from published data. Firstly, thermal preference and thermal tolerance differ among lizards differing in distribution, temporal activity pattern and habitat use. Lizards in thermally more variable regions are better able to tolerate low and high temperatures. Diurnal lizards generally select higher body temperatures than nocturnal lizards, and lizards using habitats with direct sun exposure generally selected higher body temperatures and are better able to tolerate high temperatures. Secondly, CTMax is positively correlated with Tsel. Lizards more likely exposed to extremely high temperatures while active select higher body temperatures than those using shaded habitats. Thirdly, the effects of body temperature on food intake, food passage time, ADC and AE differ among lizards, but it seems to be common among lizards that ADC and AE are less thermally sensitive than food intake and food passage time. Lastly, ADC is dependent on the type of food ingested, with insectivorous lizards digesting food more efficiently than herbivorous lizards

关键词： Lizards Selected body temperature Critical thermal limits Food intake Food passage time Apparent digestivecoefficient assimilation efficiency

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Thermal preference,thermal tolerance and the thermal dependence of digestive performance in two Phrynocephalus lizards(Agamidae),with a review of species studied

Thermal preference,thermal tolerance and the thermal depende...

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第七届全国野生动物生态与资源保护学术研讨会

作者： Yan-Fu Qu~1,Hong Li~1,Jian-Fang Gao~2,Xue-Feng Xu~3,Xiang Ji~1 (1.Jiangsu Key Laboratory for Biodiversity and Biotechnology,College of Life Sciences, Nanjing Normal University,Nanjing 210046,Jiangsu,China 2/Hangzhou Key Laboratory for Animal Adaptation and Evolution,School of Life Sciences,Hangzhou Normal University, Hangzhou 310036,Zhejiang,China 3.School of Biology and Food Engineering,Chuzhou University,Chuzhou 239012,Anhui,China)

We reported data on thermal preference,thermal tolerance and the thermal dependence of digestive performance for two Phrynocephalus lizards(*** and ***),and compared data among lizards so far studied *** values for se... 详细信息

关键词： Lizards Selected body temperature Critical thermal limits Food intake Food passage time Apparent digestive coefficient assimilation efficiency

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