Studies on the use of hydrogen peroxide as a method for the control of sea lice on Atlantic salmon.
Studies on the use of hydrogen peroxide as a method for the control of sea lice on Atlantic salmon.
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DOI：
10.1007/bf00118529
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发表时间：
1994-01-01
影响因子：
2.9
通讯作者：
Raynard, R. S.
中科院分区：
文献类型：
--
作者：
Bruno, D. W.;Raynard, R. S.
大西洋鲑鱼（萨尔莫salar）幼鱼在13.5°C下暴露于1.23 ppt过氧化氢20分钟后出现急性毒性，导致2小时内35%的死亡率。在10°C的类似条件下，没有观察到大西洋鲑鱼或金隆头鱼（Ctenolabrus rupestris）的死亡。在接触的鱼的组织中没有发现组织学变化。在10°C下暴露于0.5 ppt过氧化氢后，33%的成年和未成年海虱（鲑虱）被固定或杀死，在2 ppt下上升至98%。一些虱子能够恢复并恢复正常的游泳运动。血淋巴中的气泡导致受影响的虱子漂浮在水面上。过氧化氢对桡足类的毒性发生延迟，在10°C下暴露于1.25 ppt 20分钟后死亡率为10%，在处理后19小时死亡率上升至100%。稀释过氧化氢在20分钟的处理期间是稳定的。曝气和更高的温度增加了海水中工作浓度过氧化氢的长期分解。
Atlantic salmon (Salmo salar) post-smolts exposed to 1.23 ppt hydrogen peroxide for 20 min at 13.5°C suffered an acute toxicity resulting in a 35% mortality within 2 h. Under similar conditions at 10°C no mortalities were observed with Atlantic salmon or goldsinny wrasse (Ctenolabrus rupestris). No histological changes were noted in tissues from exposed fish. 33% of adult and pre-adult sea lice (Lepeophtheirus salmonis) were immobilized or killed following exposure to 0.5 ppt hydrogen peroxide at 10°C, rising to 98% at 2 ppt. Some lice were able to recover and regained normal swimming movements. Gas bubbles within the haemolymph caused affected lice to float on the water surface. A delay in the toxicity of hydrogen peroxide to copepodites occurred, with a 10% mortality following a 20-min exposure to 1.25 ppt at 10°C rising to 100% mortality at 19 h post treatment. Dilute hydrogen peroxide was stable over the 20-min treatment period. Aeration and higher temperatures increased the long-term breakdown of a working concentration of hydrogen peroxide in seawater.