喹硫磷引起淡水鱼鲤鱼呼吸频率和食物消耗量的改变。

Quinalphos induced alteration in respiratory rate and food consumption of freshwater fish Cyprinus carpio.

作者信息

Muttappa K, Reddy H R V, Rajesh Mridula, Padmanabha A

出版信息

J Environ Biol. 2014 Mar;35(2):395-8.

Abstract

Acute toxicity of commercial grade organophosphate insecticide, quinalphos (25% emulsified concentration) to common carp (Cyprinus carpio) was tested through bioassay. The acute toxicity of quinalphos to the fingerlings exposed for 96 hr was found to be 2.75 ppm. For sub lethal toxicity study, the fish were exposed to two concentration viz., 1/10th of LC50 (0.275 ppm) and 1/5th of LC50 (0.55 ppm) along with lethal concentration (2.75 ppm) as reference for 48 hr. The carps were under stress and mortality was insignificant in both sub lethal and lethal concentrations. However, considerable variation in respiration rate and food consumption rate was observed in both lethal and sublethal concentrations. The alteration observed in the physiological condition may be a consequence of impaired oxidative metabolism and elevated physiological stress by fish against quinalphos.

摘要

通过生物测定法测试了商业级有机磷杀虫剂喹硫磷（25%乳化浓度）对鲤鱼（Cyprinus carpio）的急性毒性。发现喹硫磷对暴露96小时的鱼苗的急性毒性为2.75 ppm。对于亚致死毒性研究，将鱼暴露于两个浓度，即LC50的1/10（0.275 ppm）和LC50的1/5（0.55 ppm），以及致死浓度（2.75 ppm）作为对照，暴露48小时。鲤鱼处于应激状态，在亚致死和致死浓度下死亡率均不显著。然而，在致死和亚致死浓度下均观察到呼吸速率和食物消耗率有相当大的变化。观察到的生理状况改变可能是鱼类氧化代谢受损以及对喹硫磷生理应激升高的结果。