作　　者： ; ; ; ;

机构地区： 中山大学生命科学学院水生经济动物研究所

出　　处： 《中山大学学报（自然科学版）》 2003年第4期59-63,共5页

摘　　要： 20 0 0年 4月研究了斜带石斑 Epinepheluscoioides寄生拟合片盘虫Pseudorhabdosynochusepinepheli的防治方法。海水福尔马林对拟合盘虫的作用表现为 :2 5min处理的半致死浓度为 2 5 0× 10 - 6 ,5 0min处理的半致死浓度为 5 0× 10 - 6 。淡水福尔马林的效果为 :3min的半致死浓度为 83× 10 - 6 ,纯淡水处理的半致死时间为 2 1min。海水福尔马林对斜带石斑的毒性表现为 :30min和 4 5min的半致死浓度分别为 94 0× 10 - 6 和 6 4 5× 10 - 6 。淡水福尔马林对斜带石斑的毒性表现为 :5min和 10min的半致死浓度分别为 130 0× 10 - 6 和 5 0 0× 10 - 6 。福尔马林处理海水中的斜带石斑半致死浓度介于 6 0 0× 10 - 6 ～ 10 0 0× 10 - 6 ,淡水处理对斜带石斑半致死浓度介于 95× 10 - 6 ～ 115×10 - 6 。淡水中斜带石斑的半麻醉和半致死时间分别为 95min和 115min。以上结果表明 :海水和淡水福尔马林对石斑拟合片盘虫的致死浓度 ,处于斜带石斑的安全范围之内。 Prophylactic methods against Pseudorhabdosynochus epinepheli (Monogenea) infection on the fish Epinephelus coioides were investigated in April 2000.The effect of formalin in seawater on P epinepheli was that the semi_lethal concentration is 250×10 -6 for 25 min,and 50×10 -6 for 50 min.The effect of formalin in freshwater on P epinepheli is reported as:the semi_lethal concentration was 83×10 -6 for 3 min.The semi_lethal time for freshwater alone was 21 min.The toxicity of formalin in seawater to E coioides was assessed:the semi_anaesthetic concentration was 940×10 -6 in 30 min and 645×10 -6 in 45 min.The toxicity of formalin in freshwater to E coioides was as follows:the semi_anaesthetic concentration was 1 300×10 -6 in 5 min and 500×10 -6 in 10 min.The semi_lethal formalin concentration to E coioides in seawater was between 600×10 -6 and 1 000×10 -6 ,and in freshwater was between 250×10 -6 and 500×10 -6 .The semi_anaesthetic and semi_lethal time of E coioides in freshwater were 95 min and 115 min respectively.These results demonstrated that the lethal formalin concentrations for P epinepheli in both seawater and freshwater fell in a safe range for E.coioides.

关 键 词： 斜带石斑 石斑拟合片盘 防治方法

领　　域： [农业科学] [农业科学]