河蟹育苗常见病害综合防治技术

对河蟹育苗期的苗种病因，症状及预防措施进行了综合报道，提出了对弧菌病，丝状菌病，真菌病，固着类纤毛虫病等的诊治方法，预防措施是切断水源和饵料等带入病原体的途径，控制饵料投量，提高投饵技术，从蚤状幼体到大眼幼体各期饵料的适宜投饵喂量，以其日最大摄食量的７０％为宜，并提出亲蟹最好在１１月交配，采取抱卵蟹越冬方式。

Technique for Prevention and Treatment of Common Disease in Seed-rearing of River Crab

The paper summarized the disease cause, symptom and preventing measures of the river crab larvae in the seeding period and put forward methods to make a diagnosis and give treat-ment of the vibriosis, filamentous bacterial disease, fungal disease and sessile ciliata disease. The prevention method is to cut off the pathogen spreading cannal through water source and feeding diets to larvae, to control feeding amount and raise the feeding technique. The biggest feeding dose per day at each stage from Zoaea to Megalopa is as good as 70%. It is also a good way to make the parent crabs mate in November so as to let the brood crabs safely overwintering.