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近几年安徽六安地区河蚌育珠效益显著。但少数养殖户因“蚌瘟”造成河蚌大批死亡,经济损失严重,“蚌瘟”主要是由病原微生物引起的。另外,伤口的感染、工业废水污染、生态环境改变、营养失调等也会引发此病。该病发病季节在4—10月,高峰期在5—7月,症状是:喷水无力,呼吸缓慢,蚌壳边缘出现硬边。严重时,闭壳肌无力,蚌壳开裂0.3～1.0厘米,常有一团痰状粘液。解剖观察,肠道无食,胃内晶杄消失,肝脏呈绿色或灰色,少数病蚌斧足或外套膜出现绿色、枯黄色或粉红色病灶。 目前,对蚌瘟治疗尚缺乏深入研究,一旦发生,治疗很难奏效。因此,搞好蚌瘟预防十分重要。 1、选择抗病力强的河蚌,并根据养殖水体决定河
In recent years, Lu’an, Anhui Lu’an significant benefits. However, a small number of farmers due to “mussel plague” caused a large number of mussel death, economic losses, “mussel plague” is mainly caused by the pathogenic microorganisms. In addition, the wound infection, industrial wastewater pollution, ecological changes, malnutrition, can also cause the disease. The onset of the season in April-October, the peak in May-July, the symptoms are: water spray weakness, slow breathing, clam shell edges appear hard. Severe, closed muscle weakness, claw cracking 0.3 to 1.0 cm, often a mass of sputum mucus. Anatomical observation, no food in the intestine, disappear in the stomach crystal, the liver was green or gray, a small number of diseases Bengxie mantle or mantle appear green, yellowish or pink lesions. At present, the treatment of muscial plague is still lack of in-depth study, in the event of treatment is difficult to work. Therefore, it is very important to do a good job in preventing plague. 1, Choose the mussel mussel with strong disease resistance and decide the river according to the aquaculture water