Table 3.

Gluconeogenic enzyme specific activities (i.u. mg−1 protein) in liver of Fundulus grandis held under normal and reduced oxygen levels for 4 weeks at 27°C

EnzymeNormoxiaHypoxia
MDH4.37±0.935.50±1.04**
PEPCK0.026±0.0120.024±0.013
FBPase0.046±0.0080.056±0.008**
G6Pase0.046±0.0100.044±0.011
  • MDH, malate dehydrogenase; PEPCK, phosphoenolpyruvate carboxykinase; FBPase, fructose-1,6-bisphosphatase; G6Pase, glucose-6-phosphatase.

    Values are least-squared means (±1 s.d.) from two-way ANOVA testing the effects of dissolved oxygen (DO) treatment and sex of fish.

    Sample sizes were 16 to 19 for normoxia and 22 for hypoxia. Significantly different between normoxia and hypoxia, *P≤0.05; **P≤0.001.