Prasad M S
Acta Physiol Hung. 1986;67(4):367-76.
O2 uptake in Esomus danricus has been determined in relation to body weight, length and thickness of the water-blood diffusion barrier at 27-28 degrees C temperature. Total O2 consumption in larvae was 1311 ml/kg/h but decreased significantly in juvenile fishes (720 ml/kg/h). The increase in the thickness of water-blood diffusion barrier at the secondary gill lamellae of the fish was found to be an important factor for the decrease in VO2. Logarithmic analyses of data for O2 uptake in relation to body weight gave a slope of 0.8865 for larvae and 0.5053 for juveniles. The exponent values of O2 uptake against diffusion barrier for larvae and juveniles were 1.7383 and 2.0956, respectively. The results obtained indicated that fish have an extra device which helps in extracting about 24% of the total VO2 required for the fulfilment of the metabolic oxygen demand of the body.
已在27至28摄氏度的温度下，测定了丹氏似野结鱼的氧气摄取量与体重、体长以及水-血扩散屏障厚度的关系。幼鱼的总耗氧量为1311毫升/千克/小时，但在幼鱼中显著下降（720毫升/千克/小时）。发现鱼的次级鳃小片处水-血扩散屏障厚度的增加是耗氧量下降的一个重要因素。对氧气摄取量与体重关系数据的对数分析得出，幼鱼的斜率为0.8865，幼鱼为0.5053。幼鱼和幼鱼的氧气摄取量相对于扩散屏障的指数值分别为1.7383和2.0956。获得的结果表明，鱼有一种额外的机制，有助于提取约24%的身体代谢需氧量所需的总耗氧量。
