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美洲(鱼回)通常不易患病,但因其体表无鳞片,胸鳍和背鳍各有一根硬棘,操作稍有不慎,便易使鱼体受伤而被霉菌孢子侵染,产生肤霉病,也叫水霉病。其症状是:霉菌孢子寄生初期,肉眼看不出明显症状,但当菌丝深入肌肉,蔓延扩展时,可见体表有棉絮状东西,同时鱼体游动失常,食欲减退,直至瘦弱而死。美洲(鱼回)患此病很普遍,在每年的4～6月份发生最多,且具有不同程度的死亡。近几年我们引进美洲(鱼回)进行养殖,对肤霉病的产生、预防、治疗作了一定的探索,取得了良好的效果,现总结如下。一、预防措施1.在捕捞、转运和放养操作中要认真仔细,尽量避免使鱼体受伤。2.放养密度要合理,密度过大易产生此病。3.放养前必须对水体进行消毒,如采用石灰等常规消毒方法,
The Americas (fish back) is usually not easy to get sick, but because of its surface scales, pectoral and dorsal fin each have a spines, the operation a little careless, it is easy to make the fish injured by fungal spores, resulting in mold disease , Also called water mold disease. The symptoms are: early mold spores parasitic, the naked eye can not see the obvious symptoms, but when the mycelium in-depth muscles, spreading expansion, visible body surface cotton-stuff, at the same time the swimming swimming disorders, loss of appetite, until thin and die. Americas (fish back) suffering from the disease is widespread, occurring in April and June each year up to a maximum, and with varying degrees of death. In recent years, we introduced the Americas (fish back) for breeding, the production of mildew, prevention, treatment made some exploration, and achieved good results, are summarized as follows. First, preventive measures 1. In fishing, transport and stocking operations should be carefully, try to avoid fish body injury. 2 stocking density to be reasonable, the density is too large prone to the disease. 3. Before stocking the water must be disinfected, such as the use of lime and other conventional disinfection methods,