Acute Toxicities of Six Aquaculture Drugs on Juvenile Opsariichthys bidens
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摘要:
目的 探明常用渔药制剂对马口鱼幼鱼的毒性和安全使用剂量,保障其养殖过程中渔药的安全使用。 方法 在水温25.8~28.3 ℃的室外条件下,采用静水式试验法测定6种常用渔药制剂对马口鱼幼鱼的急性毒性,并通过药物毒性积蓄系数(Medicine toxicity accumulation coefficient,MAC)分析制剂对马口鱼幼鱼的急性致毒效应特征。 结果 6种渔药制剂对马口鱼幼鱼的安全质量浓度从高到低依次为美婷Ⅱ(2.222 mg·L−1)、车轮虫必克(0.790 mg·L−1)、聚维酮碘(0.659 mg·L−1)、拜特新敌磷(0.225 mg·L−1)、拜特指环敌(0.214 mg·L−1)、白点净(0.006 mg·L−1);对马口鱼幼鱼的MAC值均为正值,但其变化趋势不同,表明6种药物积蓄作用强于降减作用,且受试生物对药物敏感程度存在差异。 结论 依据有毒物质对鱼类毒性等级的评价标准,对马口鱼幼鱼,美婷Ⅱ为低毒渔药制剂,车轮虫必克、聚维酮碘、拜特新敌磷和拜特指环敌为中毒渔药制剂,白点净为剧毒渔药制剂。 Abstract:Objective Acute toxicities of 6 aquaculture drugs on juvenile Opsariichthys bidens were determined for safe applications. Method Medicine toxicity accumulation coefficients (MACs) of 6 drugs commonly applied for aquaculture were determined on the fish in a tank at a controlled temperature of 25.8–28.3 ℃. Result The drugs at specific doses displayed varied degrees of safety that ranked as Meiting Ⅱ (2.222 mg·L−1)>Chelunchongbike (0.790 mg·L−1)>povidone iodine (0.659 mg·L−1)>Baitexindilin (0.225 mg·L−1)>Baitezhihuandi (0.214 mg·L−1)>Baidianjing (0.006 mg·L−1). The MACs of these drugs on O. bidens were positive but differed in the toxic effect to the fish due to differentiated accumulation and degradation of as well as sensitivity of the fish to the individual drugs. Conclusion According to the classification standards, Meiting Ⅱ was determined to be low toxic, while Chelunchongbike, povidone iodine, Baitexindilin, and Baitezhihuandi, moderately toxic, and Baidianjing, highly toxic to O. bidens juveniles. -
表 1 试验用渔药种类
Table 1. Aquaculture drugs tested
渔药制剂名称
Drug names主要成分及有效含量
Main components and content生产厂家
Manufacture factory美婷Ⅱ
Meiting Ⅱ皮乐宝(溴硝基丙二醇)、硫酸亚铁
2-Bromo-2-nitro-1,3-propanediol、FeSO4长沙拜特生物科技研究所有限公司
Changsha Beite Biotechnology Research Institute Co., Ltd.聚维酮碘
Povidone iodine聚维酮碘
Povidone iodine(10%)厦门惠盈动物渔业有限公司
Xiamen Huiying Animal and Fishery Co., Ltd.拜特指环敌
Baitezhihuandi甲苯咪唑
Mebendazole(10%)长沙拜特生物科技研究所有限公司
Changsha Beite Biotechnology Research Institute Co., Ltd.拜特新敌磷
BaitexindilinO,O-二甲基-(2,2,2-三氯-1-羟基乙基)磷酸酯
O,O-dimethyl-(2,2,2-trichloro-1-hydroxyethyl)phosponate
(90%)长沙拜特生物科技研究所有限公司
Changsha Beite Biotechnology Research Institute Co., Ltd.车轮虫必克
Chelunchongbike槟榔碱、苦参碱
Arecoline、Matrine山西争跃化工药业有限公司
Shanxi Zhengyue Chemical Pharmaceutical Co., Ltd.白点净
Baidianjing有机铜化合物
Organic copper(10%)山西争跃化工药业有限公司
Shanxi Zhengyue Chemical Pharmaceutical Co., Ltd.表 2 各试验渔药制剂质量浓度
Table 2. Mass concentrations of 6 aquaculture drugs
渔药制剂名称
Drug names药物质量浓度
Mass concentration/(mg·L−1)美婷Ⅱ Meiting Ⅱ 9.880 14.810 22.220 33.330 50.000 75.000 聚维酮碘 Povidone iodine 6.016 6.296 6.597 6.904 7.233 7.574 7.931 拜特指环敌 Baitezhihuandi 2.000 2.090 2.190 2.300 2.410 2.520 2.640 2.760 拜特新敌磷 Baitexindilin 1.490 1.710 1.966 2.260 2.590 2.960 3.390 3.885 车轮虫必克 Chelunchongbike 6.285 7.054 7.920 8.880 9.970 11.200 白点净 Baidianjing 0.046 0.056 0.068 0.083 0.101 0.123 0.150 除美婷Ⅱ和车轮虫必克外,其他药物浓度以有效成分含量计算。由于美婷Ⅱ和车轮虫必克使用说明书上未标注主要成分的有效含量,故药物浓度以制剂浓度为标准进行计算。
Drug concentrations were calculated based on content of active component. On MeitingⅡ and Chelunchongbike, of which no active ingredients contents were given in user manuals, concentrations of total dry weight are shown.表 3 不同渔药制剂对马口鱼幼鱼死亡率的影响
Table 3. Mortality of juvenile O. bidens caused by drug applications
渔药制剂名称
Drug names药物质量浓度
Mass
concentration/
(mg·L−1)死亡率 Mortality rate/% 24 h 48 h 72 h 96 h 美婷Ⅱ
Meiting Ⅱ0 0 0 0 0 9.880 0 0 0 0 14.810 0 20.0 20.0 20.0 22.220 0 20.0 20.0 20.0 33.330 20.0 80.0 100.0 50 80.0 100.0 75.000 100.0 聚维酮碘
Povidone iodine0 0 0 0 0 6.016 0 0 0 0 6.296 0 20.0 20.0 20.0 6.597 20.0 20.0 40.0 80.0 6.904 60.0 60.0 66.7 80.0 7.233 63.3 63.3 73.3 80.0 7.574 96.7 96.7 100.0 7.931 100.0 拜特指环敌
Baitezhihuandi0 0 0 0 0 2.000 0 0 0 0 2.090 0 0 40.0 40.0 2.190 20.0 20.0 40.0 60.0 2.300 20.0 40.0 60.0 100.0 2.410 40.0 40.0 80.0 100.0 2.520 60.0 60.0 100.0 2.640 60.0 100.0 2.760 100.0 拜特新敌磷
Baitexindilin0 0 0 0 0 1.490 0 0 0 0 1.710 10.0 10.0 10.0 10.0 1.966 26.7 26.7 26.7 26.7 2.260 40.0 40.0 40.0 40.0 2.590 60.0 80.0 80.0 80.0 2.960 80.0 90.0 90.0 90.0 3.390 96.7 100.0 3.885 100.0 车轮虫必克
Chelunchongbike0 0 0 0 0 6.285 0 0 0 0 7.054 0 3.3 3.3 20.0 7.920 23.3 23.3 23.3 23.3 8.880 40.0 100.0 9.970 80.0 100.0 11.200 100.0 白点净
Baidianjing0 0 0 0 0 0.046 0 0 0 0 0.056 0 30.0 40.0 40.0 0.068 0 70.0 90.0 90.0 0.083 0 90.0 100.0 0.101 6.7 80.0 100.0 0.123 80.0 100.0 0.150 100.0 表 4 渔药对马口鱼幼鱼的回归方程、半致死浓度和安全质量浓度
Table 4. Regression equations, LC50, and safety concentrations of 6 aquaculture drugs on juvenile O. bidens
渔药制剂名称
Drug names时间
Time/h回归方程
Regression equation半致死浓度
LC50/(mg·L-1)95%置信区间
95% confidence interval/(mg·L-1)药物毒性蓄积
程度系数
MAC/%安全质量浓度
SC/(mg·L-1)美婷Ⅱ
Meiting Ⅱ24 y =204.42x–279.30(R2=0.9530) 40.822 35.412~47.059 2.222 48 y =147.67x–154.88(R2=0.8990) 24.401 20.502~29.043 88.265 72 y =170.43x–179.52(R2=0.7628) 22.218 19.274~25.613 11.734 96 y =170.43x–179.52(R2=0.7628) 22.218 19.274~25.613 0 聚维酮碘
Povidone iodine24 y =1196.40x–956.02(R2=0.9463) 6.932 6.629~7.250 0.659 48 y =1196.40x–956.20(R2=0.9463) 6.932 6.629~7.250 0 72 y =1096.80x–864.45(R2=0.8168) 6.819 6.508~7.145 33.041 96 y =970.78x–745.02(R2=0.8260) 6.590 6.295~6.901 66.959 拜特指环敌
Baitezhihuandi24 y =742.19x–240.05(R2=0.9292) 2.459 2.388~2.533 0.214 48 y =871.50x–280.19(R2=0.9232) 2.393 2.328~2.459 20.820 72 y =710.62x–198.75(R2=0.9130) 2.225 2.166~2.286 52.997 96 y =1580.00x–472.72(R2=0.9838) 2.142 2.100~2.185 26.183 拜特新敌磷
Baitexindilin24 y =282.36x–54.03(R2=0.9881) 2.336 2.038~2.677 0.225 48 y =304.45x–57.04(R2=0.9664) 2.247 1.996~2.529 100 72 y =304.45x–57.04(R2=0.9664) 2.247 1.996~2.529 0 96 y =304.45x–57.04(R2=0.9664) 2.247 1.996~2.529 0 车轮虫必克
Chelunchongbike24 y =506.92x–432.38(R2=0.9793) 8.945 8.482~9.433 0.790 48 y =939.30x –802.36(R2=0.8724) 8.081 7.830~8.341 82.521 72 y =939.30x–802.36(R2=0.8724) 8.081 7.830~8.341 0 96 y =589.99x–479.52(R2=0.7589) 7.898 7.584~8.225 17.479 白点净
Baidianjing24 y =580.60x+588.37(R2=0.8952) 0.118 0.112~0.125 0.006 48 y =222.59x +312.10(R2=0.8571) 0.066 0.060~0.074 88.136 72 y =406.76x +550.10(R2=0.9457) 0.059 0.055~0.063 11.865 96 y =406.76x +550.10(R2=0.9457) 0.059 0.055~0.063 0 -
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