中华鳖幼鳖的空气呼吸静止代谢率,气体交换比及其与温度的关系

Aerial Respiration and Respiratory Gas Exchange Rate of Juvenile Soft-Shelled Turtle,Trionyx sinensis,Related to Temperature

摘要: 本文观测了23、25、28、30、33、35 ℃下体重20—60 g中华鳖（Trionyx sinensis）幼鳖陆上呼吸时的静止代谢率V〔mlO2/(kg·h)〕和呼吸气体交换比RE，探讨了二者与温度T（℃）的关系。幼鳖在空气中的静止代谢率随温度升高而增加，其相关关系可用下式表示：V=8.2217×100.0459T，R2=0.98。Q10在实验温度范围内并不是固定不变的，23—30 ℃之间Q10约为2.5，而在30—35 ℃之间则增加到3.4。RE随温度升高有下降的趋势，但23—30 ℃之间变化不大，30 ℃以上快速下降。结合前人报道结果，还对中华鳖幼鳖的能量代谢特点进行了讨论。

Abstract: Aerial resting metabolic rates V mlO2/(kg·h) and respiratory gas exchange rates RE of 20-60 g juvenile soft-shelled turtles were measured under 23℃,25℃,28℃,30℃,33℃ and 35℃.The resting metabolic rate in air had a direct ratio with temperature T(℃)and their relationship could be described as:V=8.2217×10 0.0459,R2=0.98.Q10 value was 2.5 between 23-30℃ while it was 3.4 between 30-35℃.RE decreased slowly with increasing temperature between 23-30℃,while above 30℃,a sharp decrease in RE was found.Some metabolic characters of juvenile soft-shelled turtles were discussed.