Kisia S M, Hughes G M
Department of Veterinary Anatomy, University of Nairobi, Kenya.
Acta Biol Hung. 1993;44(4):367-74.
Routine oxygen consumption (Vo2) measurements on 54 specimens (0.055-190.4 g) of a tilapia, Oreochromis niloticus (Trewavas) were carried out using two different types of closed respirometers: a modified cuvette for fish weighing 0.055-0.91 g and ordinary closed chamber respirometer for fish weighing more than 1 g. Vo2 values over the weight range studied had a scaling value of 0.743 which relates closely to the values for the gill respiratory surface area and morphometric oxygen diffusing capacity of O. niloticus in a previous study /13/. This shows that a close relationship exists between changes in structural parameters involved in oxygen uptake and the routine metabolism of O. niloticus with development. The values for routine Vo2 of 1.38 and 7.65 ml/h for 10 g and 100 g fish, respectively (calculated from the regression equation) show that O. niloticus is a moderately active fish.
使用两种不同类型的封闭呼吸计，对54条尼罗罗非鱼（Oreochromis niloticus，Trewavas）样本（体重0.055 - 190.4克）进行了常规耗氧量（Vo2）测量：一种是改良比色皿，用于体重0.055 - 0.91克的鱼；另一种是普通封闭腔室呼吸计，用于体重超过1克的鱼。在所研究的体重范围内，Vo2值的标度值为0.743，这与之前一项研究中尼罗罗非鱼的鳃呼吸表面积和形态计量学氧扩散能力的值密切相关/13/。这表明，尼罗罗非鱼在发育过程中，参与氧气摄取的结构参数变化与常规代谢之间存在密切关系。根据回归方程计算，10克和100克鱼的常规Vo2值分别为1.38和7.65毫升/小时，这表明尼罗罗非鱼是一种中等活跃的鱼类。
