The acute toxicity (96 h LC50) of two organophosphorus pesticides (OPs), chlorpyrifos (CPF) and dimethoate (DMT) to the early-life stage (fry) of flathead grey mullet, Mugil cephalus (total length, 22±2 mm, wet weight, 285±4 mg) was evaluated. M. cephalus were exposed to concentrations of CPF (2, 4, 6, 8, and 10 μg/L) and DMT (300, 750, 1500, 3000 and 4500 μg/L) for 96 h. Values of 96 h LC50 indicated that CPF (3.45 μg/L; 95 % confidence limits, lower = 2.77 and upper = 4.06 μg/L) was found to be highly toxic to M. cephalus fry compared to DMT (854.10 μg/L; 95 % confidence limits, lower = 558.23 and upper = 1176.77 μg/L). Data obtained during the present study would be helpful in monitoring OP pollution in coastal waters with M. cephalus as key bioindicator species.

中文翻译：

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两种有机磷农药对鲻鲻Mugil cephalus 早期生命阶段的急性毒性（Linnaeus，1758 年）

毒死蜱 (CPF) 和乐果 (DMT) 两种有机磷农药 (OPs) 对鲻鲻鲻(Mugil cephalus，全长22±2 mm，湿重，285±4 毫克）进行了评估。M. cephalus 暴露于 CPF（2、4、6、8 和 10 μg/L）和 DMT（300、750、1500、3000 和 4500 μg/L）浓度下 96 小时。96 小时 LC50 值表明，与 DMT（854.10 μg/L；95% 置信限，下限 = 2.77 和上限 = 4.06 μg/L）相比，CPF（3.45 μg/L；95% 置信限，下限 = 2.77 和上限 = 4.06 μg/L）对头鱼苗具有高毒性； 95% 置信限，下限 = 558.23，上限 = 1176.77 μg/L）。在本研究中获得的数据将有助于监测以头孢菌为关键生物指示物种的沿海水域的 OP 污染。