Hossain Mohammad Amzad, Sutradhar Lipi, Sarker Tumpa Rani, Saha Shuva, Iqbal Mohammed Mahbub
Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
Saudi J Biol Sci. 2022 Jul;29(7):103316. doi: 10.1016/j.sjbs.2022.103316. Epub 2022 May 22.
Chlorpyrifos is a widely applied insecticide that permeates on most waterways and affects aquatic organisms. The growth performances, hematological and histological impacts on Nile tilapia, following a 60 day of exposure to varying concentrations of chlorpyrifos 20 EC (T 08 µgL, T 16 µgL, and T 32 µgL) were compared to a control T 0 µgL. The 96-hour LC50 of chlorpyrifos 20 EC was calculated as 46.80 μgL. The water quality parameters were recorded regularly. The value of dissolved O and NH stayed rather steady, although temperature varied considerably. It was revealed that as chlorpyrifos levels go up, the percentage of weight gain (WG %), specific growth rates (SGR), and survival rate decreases. The control group T had the highest percentages of SGR weight (1.16 ± 0.58) and the T group had the lowest percentages of SGR weight (0.25 ± 0.77). The hematological assessment showed significant differences of hemoglobin concentration, white blood cell counts and red blood cell numbers between chlorpyrifos treatment and control group (). Histological alterations in the liver, gills, and muscle tissues reported to be worse for T as compared to others. There were no statistical differences in GSI, HSI values between control and treatment groups. The chlorpyrifos 20 EC was shown to be highly toxic to at sub-lethal dosages.
毒死蜱是一种广泛应用的杀虫剂，它会渗透到大多数水道中并影响水生生物。将尼罗罗非鱼暴露于不同浓度的毒死蜱20乳油（T 08µgL、T 16µgL和T 32µgL）60天后，比较其生长性能、血液学和组织学影响，并与对照组T 0µgL进行对比。毒死蜱20乳油的96小时半数致死浓度计算为46.80µgL。定期记录水质参数。尽管温度变化很大，但溶解氧和氨的值保持相当稳定。结果表明，随着毒死蜱水平的升高，体重增加百分比（WG%）、特定生长率（SGR）和存活率会降低。对照组T的SGR体重百分比最高（1.16±0.58），而T组的SGR体重百分比最低（0.25±0.77）。血液学评估显示，毒死蜱处理组和对照组之间的血红蛋白浓度、白细胞计数和红细胞数量存在显著差异（）。据报道，与其他组相比，T组肝脏、鳃和肌肉组织的组织学改变更严重。对照组和处理组之间的GSI、HSI值没有统计学差异。结果表明，毒死蜱20乳油在亚致死剂量下对[此处原文缺失具体对象]具有高毒性。
