[Changes in the internal temperature and the cardiac rhythm of the Saharian lizard, Varanus griseus Daud., using radiotelemetry]. / Etude de l'évolution de la température interne et du rythme cardiaque chez le lézard saharien: Varanus griseus Daud. par radiotélémétrie

The evolution of the internal temperature and of the heart rate, recorded by telemetry, has been studied on Varanus griseus, by using transmitters of reduced size, in the natural conditions of Sahara. A parallelism between these two parameters exists. However, an anticipation of the heart rate increase during sun basking has been established. The hearing and cooling dynamics have been specified; a hypothesis on the mechanism of winter dormancy entrance has been proposed.