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近年,由于进行了把广盐性的淡水鱼类放在海水中饲养的研究,从而提高了养殖的经济效益,并成为水产增养殖学上一项重要的课题。把淡水养殖鱼移入海水中驯化饲养时,由于渗透压的增加,使鱼类的生理机能产生明显的变化。可以预料;涉及鱼消化道内的细菌群落,直接、间接都会有某些影响。事实上,把马苏大麻哈鱼、大鳞大麻哈鱼、鲻鱼及齐氏罗非鱼,由淡水移入海水中,由于驯化而引起消化道内营养细菌群落产生显著变化。有的报告还说:可以形成海水鱼类所特有的消化道内细菌群落。但是这
In recent years, due to the study of raising salt-water freshwater fish in seawater, the economic benefits of aquaculture have been raised and an important issue for aquaculture has been raised. When freshwater cultured fish are domesticated and reared in seawater, the physiological function of the fish is significantly changed due to the increase of the osmotic pressure. It can be expected that bacterial communities involved in the fish digestive tract have some direct and indirect effects. In fact, shifting the freshwater to seawater from the Masu salmon, Scampi salmon, mackerel and tzi tilapia resulted in significant changes in the vegetative bacterial community within the digestive tract due to domestication. Some reports also said: can form marine bacteria unique to the digestive tract bacteria community. But this