水热环境对黑眶蟾蜍幼体存活的影响  

Effects of humidity and temperature on the survival of Juvenile Bufo melanostictus Schneider

作　　者：徐大德[1] 李军[1] 李方满[1] 

机构地区：[1]广东肇庆学院生物学系,肇庆526061

出　　处：《生态科学》2007年第1期59-62,共4页Ecological Science

基　　金：广东省教育厅自然科学基金(Z02076)

摘　　要：禁食后在9种水热条件下,观测了不同温湿度对黑眶蟾蜍(Bufo melanostictus Schneider)幼体存活时间和动用体内贮能情况的影响。黑眶蟾蜍幼体在24℃浅水环境中存活时间长达22d。在高温和干燥条件下幼体的存活时间最短,32℃干燥环境中幼体存活时间不到1d。不同温湿度环境下幼体体内含脂量有显著差异。在高温和干燥环境中幼体存活时间短,动用贮能少,其体内脂肪含量和总能量动用少于其它温湿度环境中的幼体。结果表明,黑眶蟾蜍幼体适宜生活在24℃浅水和湿润环境中,觅食不足并非影响其幼体存活时间的主要因子,而高温和干燥是影响其幼体存活时间的关键因子。The effects of humidity and temperature on the survival period of time and energy-consuming of juvenile Bufo melanostictus Schneider was investigated with 9 different humidity and temperature conditions. Results showed that the optimal humidity and temperature for their surviving is 24℃ in shallow water in which they can survive as long as 22 days while 32℃ high temperature with dry ambient is not suitable for their surviving. The results of their physical energy-consuming changes in different humidity and temperature also showed that the key factor that affects their survival time is not the food shortage but humidity and temperature.

关 键 词：黑眶蟾蜍 幼体 温湿度 存活 

分 类 号：Q958[生物学—动物学]