Effect of closed v. intermittent-flow respirometry on hypoxia tolerance in th…

This study compares the critical oxygen saturation (O2crit) levels of the shiner perch Cymatogaster aggregata obtained using two different methods wherein hypoxia is induced either by the fish’s respiration (closed respirometry) or by degassing oxygen with nitrogen (intermittent-flow respirometry). Fish exhibited loss of equilibrium at a higher O2 saturation in the closed respirometry method …