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在水温24.3～26℃时,测定斑鳜鱼苗(1.27～1.51cm,0.0384g)的耗氧情况,计算鱼苗的耗氧速率与窒息点。结果表明:斑鳜鱼苗耐低氧能力较弱26℃时其窒息点为1.73mg/l;斑鳜鱼苗水温25℃左右时,昼夜耗氧率差异不特别显著,其晚间耗氧率高于白天,凌晨左右达到最大值。在水温24.3～26℃时,斑鳜的耗氧率为983.14～1498.29mg/(kg.h),其窒息点这1.7mg/L。
At the water temperature of 24.3 ~ 26 ℃, the oxygen consumption of spot catfish fry (1.27 ~ 1.51cm, 0.0384g) was measured, and the oxygen consumption rate and suffocation point of fry were calculated. The results showed that the low oxygen tolerance of C. macrophylla had a suffocation point of 1.73 mg / l at 26 ℃. When the water temperature of C. maculata was about 25 ℃, the difference in daytime and nighttime oxygen consumption was not significant, and its nighttime oxygen consumption rate was higher than that of daytime , Reach the maximum in the morning or so. At the water temperature of 24.3 ~ 26 ℃, the oxygen consumption rate of cantharidin was 983.14 ~ 1498.29mg / (kg.h), and the suffocation point was 1.7mg / L.