[Thermodynamic studies of ontogenic rhythms of energy exchange in the alyte (an anuran amphibian)].
The total energy flux in an Amphibian was measured using a microcalorimetric technique throughout different stages of development. Simultaneous records of the individual activity (actography) allowed us to study circadian rhythms and their variations during ontogenesis. Acrophase of the energy exchanges take place at the beginning of the night in adults, tadpoles and juveniles of more than 9 months. However, there was a shift in the acrophase of the circadian rhythm in juveniles aged between 7 and 9 months. This could be an adaptation process which regulate competition within populations of the same species.
D000375:Aging; D000818:Animals; D001001:Anura / Q000254:growth & development*; D004734:Energy Metabolism; D010507:Periodicity; D013816:Thermodynamics
Etude thermodynamique de l'ontogenèse des rhythmes de dépense énergétique chez l'alyte (amphibien anoure).