Barbieri E, Ngan P V, Gomes V
Instituto Oceanográfico, USP, Praça do Oceanográfico, São Paulo, Brasil.
Rev Bras Biol. 1998 May;58(2):263-71.
Synthetic agents are important sources of pollution in Brazil, especially in the large urban centers. Of these, SDS has been largely employed as a reference substance in toxicity tests with aquatic organisms. Studies on the effect of this substance on the physiology and behavior of fish are scanty. In this study the metabolism and swimming capacity of Cyprinus carpio, at a given swimming velocity (10.15 cm/sec), were analyzed in relation to acute exposition to different concentrations of SDS (1 ppm, 5 ppm, 10 ppm). The metabolism and swimming capacity of a fish are the product of many integrated complex physiological processes that can be directly related to variations in environmental conditions. The results show that oxygen consumption increases while swimming capacity decreases with increasing concentrations of SDS in all size classes studied. At the highest concentration employed (10 ppm), swimming capacity was reduced 5 times and oxygen consumption increased 2.8 times in relation to the control. In general, the pollutant effects on swimming activity are more pronounced in smaller fish whereas the effects on oxygen consumption is more pronounced in larger ones.
合成剂是巴西重要的污染源，尤其是在大型城市中心。其中，十二烷基硫酸钠（SDS）在水生生物毒性测试中被大量用作参考物质。关于这种物质对鱼类生理和行为影响的研究很少。在本研究中，分析了鲤（Cyprinus carpio）在给定游泳速度（10.15厘米/秒）下，与急性暴露于不同浓度的SDS（1 ppm、5 ppm、10 ppm）相关的代谢和游泳能力。鱼类的代谢和游泳能力是许多综合复杂生理过程的产物，这些过程可能与环境条件的变化直接相关。结果表明，在所研究的所有大小类别中，随着SDS浓度的增加，耗氧量增加而游泳能力下降。在使用的最高浓度（10 ppm）下，与对照组相比，游泳能力降低了5倍，耗氧量增加了2.8倍。一般来说，污染物对游泳活动的影响在较小的鱼类中更为明显，而对耗氧量的影响在较大的鱼类中更为明显。
