The biflagellated, single-celled parasite Ichthyobodo necator can cause significant losses among fish populations, particularly those cultured in tanks. Treatments of KMnO4 and CuSO4 were evaluated against a naturally occurring I. necator infestation on sunshine bass (female white bass Morone chrysops x male striped bass M. saxatilis) raised in tanks. Four-hour static treatments with 3 mg of KMnO4/L of water (2.5 mg/L above the determined KMnO4 demand) or 2 mg of CuSO4/L of water (total alkalinity = 207 mg/L; total hardness = 95 mg/L) were randomly applied to 4 tanks/treatment (23 fish/tank); the same treatments were reapplied 2 d later. Four tanks were used as positive controls. By 2 d posttreatment (after the second treatment), only 17.4% of the untreated control fish survived, and a sample of the remaining fish was heavily infested with I. necator. All remaining control fish were dead by 5 d posttreatment. The KMnO4 treatment significantly curtailed the initial mortality (survival = 92.4%) and slightly reduced the high parasite loads at 2 d posttreatment. However, fish mortalities increased dramatically over the next 3 d (survival at 5 d posttreatment = 37.5%), and parasite loads from sampled fish remained high. The CuSO4 treatment was effective in significantly lowering the parasite load (almost eliminating I. necator) and maintaining a high fish survival (87.5%) by 5 d posttreatment. The findings in this study clearly demonstrate that CuSO4 is a viable treatment for ichthyobodosis in tanks.

中文翻译：

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硫酸铜和高锰酸钾水槽处理治疗鱼鳞病的阳光鲈鱼的比较

双鞭毛单细胞寄生虫 Ichthyobodo necator 可导致鱼类种群的重大损失，尤其是那些在水箱中养殖的鱼类。KMnO4 和 CuSO4 的处理针对自然发生的 I. necator 侵染对在水箱中饲养的阳光鲈鱼（雌性白鲈 Morone chrysops x 雄性条纹鲈鱼 M. saxatilis）进行了评估。用 3 mg KMnO4/L 水（比确定的 KMnO4 需求量高 2.5 mg/L）或 2 mg CuSO4/L 水（总碱度 = 207 mg/L；总硬度 = 95 mg/L）静态处理四小时) 随机应用于 4 个鱼缸/处理（23 条鱼/鱼缸）；2 d 后再次应用相同的处理。四个罐用作阳性对照。到 2 d 后处理（第二次处理后），未经处理的对照鱼只有 17.4% 存活，其余鱼的样本被 I 严重侵染。necator。所有剩余的对照鱼在处理后 5 天死亡。KMnO4 处理显着降低了初始死亡率（存活率 = 92.4%），并在处理后 2 天略微降低了高寄生虫载量。然而，在接下来的 3 天里，鱼的死亡率急剧增加（治疗后 5 天的存活率 = 37.5%），并且来自采样鱼的寄生虫载量仍然很高。CuSO4 处理可有效地显着降低寄生虫负荷（几乎消除了I. necator）并在处理后5 天保持较高的鱼存活率（87.5%）。本研究的结果清楚地表明，CuSO4 是治疗鱼缸中鱼鳞病的可行方法。4%) 并在治疗后 2 天略微降低高寄生虫载量。然而，在接下来的 3 天里，鱼的死亡率急剧增加（治疗后 5 天的存活率 = 37.5%），并且来自采样鱼的寄生虫载量仍然很高。CuSO4 处理可有效地显着降低寄生虫负荷（几乎消除了I. necator）并在处理后5 天保持较高的鱼存活率（87.5%）。本研究的结果清楚地表明，CuSO4 是治疗鱼缸中鱼鳞病的可行方法。4%) 并在治疗后 2 天略微降低高寄生虫载量。然而，在接下来的 3 天里，鱼的死亡率急剧增加（治疗后 5 天的存活率 = 37.5%），并且来自采样鱼的寄生虫载量仍然很高。CuSO4 处理可有效地显着降低寄生虫负荷（几乎消除了I. necator）并在处理后5 天保持较高的鱼存活率（87.5%）。本研究的结果清楚地表明，CuSO4 是治疗鱼缸中鱼鳞病的可行方法。5%) 后处理 5 天。本研究的结果清楚地表明，CuSO4 是治疗鱼缸中鱼鳞病的可行方法。5%) 后处理 5 天。本研究的结果清楚地表明，CuSO4 是治疗鱼缸中鱼鳞病的可行方法。