Effects of pH on survival, phosphorus concentration, adenylate energy charge and Na(+)-K(+) ATPase activities of Penaeus chinensis Osbeck juveniles.
Penaeus chinensis (Osbeck) juveniles were maintained for 14 days at pH 6.0, 7.0, 7.6, 8.0 and 8.5, respectively. The effects of pH on survival, phosphorus concentration, adenylate energy charge (AEC) and Na(+)-K(+) adenosine triphosphatase (ATPase) activities of prawns were investigated. The results showed that survival of P. chinensis was impaired at low and high pH levels. The total phosphate level and AEC in abdominal muscle increased with pH level in range of 6.0-7.6 reaching the maximum values at pH 7.6. Thereafter, the levels declined with increasing pH level in range of 7.6-8.5. The change of Na(+)-K(+) ATPase activity in gill of prawn was similar to that of total phosphorus content and AEC in muscle of prawn at different pH. The effect of pH on Na(+)-K(+) ATPase activity in the muscle was lower than on that in gill.
College of Life Science, Hebei University, Baoding 071002, People's Republic of China. wangwn@mail.hbu.edu.cn
Wei-Na
WN
Wang
An-Li
AL
Wang
Li
L
Chen
Yuan
Y
Liu
Ru-Yong
RY
Sun
D000818:Animals; D003445:Crustacea / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology*; D005880:Gills / Q000502:physiology; D006863:Hydrogen-Ion Concentration; D009132:Muscles / Q000502:physiology; D010758:Phosphorus / Q000032:analysis*; D000254:Sodium-Potassium-Exchanging ATPase / Q000187:drug effects / Q000494:pharmacology*; D016019:Survival Analysis
D010758:Phosphorus; D000254:Sodium-Potassium-Exchanging ATPase