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首页> 外文期刊>The Progressive Fish-Culturist >USE OF THE LAMPRICIDE 3-TRIFLUOROMETHYL-4-NITROPHENOL (TFM) TO CONTROL TADPOLES IN WARMWATER ORNAMENTAL FISH PONDS
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USE OF THE LAMPRICIDE 3-TRIFLUOROMETHYL-4-NITROPHENOL (TFM) TO CONTROL TADPOLES IN WARMWATER ORNAMENTAL FISH PONDS

机译：杀菌剂3-三氟甲基-4-硝基苯酚（TFM）在温水观赏鱼塘中控制水龙头的应用

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Laboratory-based static acute toxicity tests were performed to determine the relative toxicity of TFM to selected species of tadpoles and ornamental fish in soft (mean, 45 mg/L as CaCO3) and hard (mean, 177 mg/L) freshwater Sensitivity was measured as the 96-h LC50, the concentration lethal to half the test animals in 96 h. The sensitivity of larval bullfrogs Rana catesbeiana to TFM was 1.50 mg/L in soft water and 4.20 mg/L in hard water. The 96-h LC50 of TFM for larval southern toads Bufo terrestris was 0.51 mg/L in soft water and 0.70 mg/L in hard water. Toxicity of TFM (96-h LC50) to the fish tested ranged from 1.02 to 7.73 mg/L in soft water and 1.83 to 18.05 mg/L in hard water. Probit analysis indicated that the amount of TFM required to kill 99% of bullfrog larvae was 3.35 mg/L. A 96-h exposure to 3.35 mg/L TFM would also kill 99% of suckermouth catfish Hypostomus plecostomus, 92% of black neon tetras Hyphessobrycon herbertaxelrodi, 90% of tiger barbs Puntius tetrazona, 50% of freshwater angelfish Pterophyllum scalare, 25% of dwarf gouramis Colisa lalia, and 5% of southern platyfish Xiphophorus maculatus. Although there was apparent selectivity when used with certain ornamental fish species, the use of TFM as a tadpole control agent can be nonselective, unpredictable, and expensive.
机译：进行了基于实验室的静态急性毒性试验，以确定TFM对soft（平均为45 mg / L，以CaCO3计）和硬（平均为177 mg / L）淡水中选定的of和观赏鱼的相对毒性。作为96小时的LC50，浓度在96小时内对一半的测试动物具有致命性。幼体牛蛙林蛙对TFM的敏感性在软水中为1.50 mg / L，在硬水中为4.20 mg / L。 TFM在南方蟾蜍幼虫中的96小时LC50为0.51 mg / L（在软水中）和0.70 mg / L（在硬水中）。 TFM（96-h LC50）对测试鱼的毒性在软水中为1.02至7.73 mg / L，在硬水中为1.83至18.05 mg / L。概率分析表明，杀死99％的牛蛙幼虫所需的TFM量为3.35 mg / L。暴露于3.35 mg / L TFM的96小时还可以杀死99％的suck嘴Hy鱼，92％的黑色霓虹灯Hy鱼，90％的虎钩刺Puntius tetrazona，50％的淡水神仙鱼翼龙，25％矮矮人古拉米斯Colisa lalia和5％的南部鳞鱼Xiphophorus maculatus。尽管与某些观赏鱼类一起使用时具有明显的选择性，但使用TFM作为control控制剂可能是非选择性，不可预测且昂贵的。

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