摘要
一、引言 氢离子浓度(pH值)的变化对于水生生物，特别是鱼类的生活常常被认为是直接或间接发生影响的因子之一。1920年，M．E．Jewell氏开始注意到水质的氢离子浓度变化对于两栖类蝌蚪代谢和再生作用的影响，他发现最适宜的氢离子浓度是中性或接近中性，
The effect of hydrogen ion concentrahon (pH) on fish, under certain circumstances, is closely connected with the amount of oxygen dissolved in waten. The auther has designed a controlling apparatus which can be regulated under conditions of dissolved oxygen and other physical and chemical factors most favorable for fish, to investigate the survival adaptability to pH of fish by altering the pH of the water. 412 fingelings being tested for 60—144 hours show that the survival adaptability of Mylopharyngodon piceus, Ctenopharyngodon idellus, Hypophthalmichthys molltrix and Aristechtys nobilis is within the pH range 4.6—10.2, and that of cyprinus carpio is within the pH range 4.4—10.4. It is also found that the individuals of each species have a certain transitional scope between the limits of the surviving and the totally lethal pH range, during which the fish is most sensitive to even slight changes in pH.
