淡水鱼类 鳃和皮肤吸水；粪便和尿液损失盐分。 肾脏排水，鳃上的氯细胞（吸盐细胞）从水中吸 收盐分，从食物补充盐分。 absorbs water through gills(and skin) body fluids ca.300 mOsm/kg, medium <5 mOsm/kg obtains salts through salts lost removes much water and "chloride cells in gills via feces some salt via dilute urine and with food FIGURE 13-1.Diagram summarizing osmoregulation of freshwater teleost. 11 鳃和皮肤吸水；粪便和尿液损失盐分。 肾脏排水，鳃上的氯细胞（吸盐细胞）从水中吸 收盐分，从食物补充盐分。 淡水鱼类