Influence de la température et du poids unitaire sur la demande en oxygène de la truite arc-en-ciel (Salmo gairdnerii R.) en eau douce

Multiple correlation analysis is applied to a series of oxygen demand measurements on rainbow trout. It confirms that temperature and fish size are determining factors in standard feeding conditions. Two types of oxygen demand adjustment have been tested in relation with these two parameters. The final choice was an exponential law for temperature influence, which allows the introduction of the Q-10 concept. Its value is halved passing from a temperature below 10°C to a temperature above 12 C.