论文部分内容阅读
[目的]进一步探讨油茶饼粕在淡水鱼虾蟹病害防治中的应用。[方法]采用单因子梯度法,利用不同浓度的油茶饼粕浸出液对5种有鳞鱼和2种无鳞鱼及青虾和螺蛳等水产动物进行毒性试验。[结果]油茶饼粕浸出液对有鳞鱼鲢、鳙、草鱼、鲤、鲫鱼24和48 h的LC50分别为6.25和5.16 mg/L、5.26和5.12 mg/L、9.74和5.87 mg/L、9.29和7.64 mg/L、11.3和7.55 mg/L;油茶饼粕浸出液对无鳞鱼斑点叉尾鮰、泥鳅在24和48 h的LC50分别为:7.47和5.00 mg/L、26.42和16.80 mg/L;青虾和螺蛳在90 mg/L油茶饼粕浸出液的情况下48 h存活率达100%。油茶饼粕浸出液对淡水鱼类具有显著的毒杀性,而淡水青虾和螺蛳对油茶饼粕浸出液具有较高的耐受性。[结论]利用油茶饼粕浸出液控制混入淡水虾蟹养殖池的野杂鱼和防治病害,具有较好的前景。
[Objective] The purpose was to further explore the application of Camellia cake in the freshwater fish shrimp and crab disease prevention and control. [Method] The toxicity of 5 kinds of scales fish and 2 kinds of scales-free fish and freshwater shrimp and snails were studied by single-factor gradient method. [Result] The LC50 of Camellia cake Meal leachate for 24 and 48 h of silver carp, bighead carp, carp, carp and crucian carp were 6.25 and 5.16 mg / L, 5.26 and 5.12 mg / L, 9.74 and 5.87 mg / L, 9.29 And 7.64 mg / L, 11.3 and 7.55 mg / L, respectively. The LC50 of Camellia oleifera cv. Melaleuca catfish leachate to uncooked Channel fish were 7.47 and 5.00 mg / L, 26.42 and 16.80 mg / L at 24 and 48 h, respectively Shrimp and snails in the 90 mg / L camellia meal leachate 48 h survival rate of 100%. Camellia cake leachate has significant toxicity to freshwater fish, while freshwater freshwater shrimp and snail have higher tolerance to camellia cake leachate. [Conclusion] The use of Camellia cake pulp leachate to control the freshwater shrimp mixed with freshwater shrimp and crab breeding ponds and prevention and treatment of diseases, has a good prospect.