Respiration of the Winnipeg Goldeye (Hiodon alosoides)

Publisher Website
Google Scholar
Abstract
The respiratory metabolism of groups of goldeye was measured during rest and sustained swimming activity at 5, 10, and 15 C under conditions of continuous reduction in oxygen by the metabolism of the fish. The oxygen consumption fell progressively during swimming at all temperatures indicating dependence of metabolism on oxygen supply at all pO2 levels. During rest the oxygen consumption was relatively independent of pO2 until certain critical levels were reached. Respiration became markedly limited by CO2 in the medium when the pCO2 exceeded 50 mm Hg. It is apparent that survival possibilities of goldeye would be limited by pO2 and pCO2 between 20–40 mm Hg during the winter.