An automatic respirometer for determining oxygen uptake in crayfish (Austropotamobius pallipes (Lereboullet)) over periods of 3-4 days.

Abstract

1. An automatic respirometer has been developed for continuous measurements over 3-4 days on 1-15 g crayfish. The sensor is a modified Mackereth oxygen electrode. Respiration is recorded on a millivolt potentiometric pen recorder during closed periods when the O2 concentration in the medium falls to a predetermined level. A solenoid-operated valve is then… (More)

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