Under different temperatures, the oxygen consumption rate, asphyxiation point and biochemical indices of Esox lucius were 9tudied by the method of respiratory chamber. The results showed that: Under different temperature of 3℃, 8 ℃, 13℃ and 18 ℃ , the oxygen consumption rates of Esox lucius increased immediately as temperature rose(p < 0.01), (0.0047 ± 0.000017) mg/g · h was the lowest oxygen consumption rate at 3 ℃, (0.029 ±0. 0011)mg/g · h was the highest oxygen consumption rate at 18 ℃. Under constant temperature of 13℃, the mean oxygen consumption rate of Esox lucius which had average body weight (653. 8 ± 88. 1) g was (0.020 ± 0.0031) mg/g · h. The lowest oxygen consumption rate was at 3:00pm, and the highest oxygen consumption rate was at 11 :00am. The change of Q10 value proved that oxygen consumption rate was sensitive to temperature. Q10 was minimum at 13 ~ 18 ℃, this temperature was optimum to growth of Esox lucius. The higher the temperature, the faster the breathing was. At 18℃ respiratory frequency of Esox lucius was (68.50 ±3.58) (time/min), the minimum was (29.00 ±4. 31) (time/min) at3 ℃. The suffocation point of Esox lucius increased with the increasing of water temperatures. The suffocation reached the highest point of 1. 68 mg/L at 13℃ and reached the lowest point of 0. 82 mg/L at 3 ℃ .The contents of hepatic glycogen decreased immediately with the increasing of water temperatures(P < 0.05), from (67. 70 ± 6. 66) mg/g to (41.83 ± 3.72) mg/g. The content of lactic acid also decreased immediately with the increasing of water temperatures, from (0. 36 ±0. 0041)mmol/gprot to (0. 15 ± 0.0034) mmol/gprot. The activity of acid phosphatase and alkaline phosphatase weakened in the hepatopancereas when the water temperatures increased, from (21.51 ±0. 69)U/gprot and (22. 34 ±0.43)U/gprot to ( 19. 04 ±0. 62)U/gprot and (18. 10±0.41)U/gprot, respectively.
Esox luciusoxygen consumption rateasphyxiation pointbiochemical indices
NETL
NSTL
维普
万方数据
