The discussion centers on the effects of temperature on enzymes in poikilotherms, exploring how these organisms adapt their metabolic processes to varying environmental temperatures. It includes considerations of enzyme activity, metabolic rates, and behavioral adaptations.
Participants express various viewpoints on how poikilotherms manage temperature effects on enzyme activity and metabolism, indicating that multiple competing views remain without a clear consensus.
Some claims rely on species-specific temperature optima and metabolic adaptations, which may not apply universally across all poikilotherm species.
This discussion may be of interest to those studying biology, ecology, or animal physiology, particularly in understanding the adaptations of poikilothermic organisms to their environments.
https://en.wikipedia.org/wiki/PoikilothermFor an important chemical reaction, poikilotherms may have four to ten enzyme systems that operate at different temperatures.[4] As a result, poikilotherms often have larger, more complex genomes than homeotherms in the same ecological niche. Frogs are a notable example of this effect, though their complex development is likely more important.[5]
Because their metabolism is variable and generally below that of homeothermic animals, sustained high-energy activities like powered flight in large animals or maintaining a large brain is generally beyond poikilotherm animals.[6] The metabolism of poikilotherms favors strategies such as sit-and-wait hunting over chasing prey for larger animals with high movement cost. As they do not use their metabolisms to heat or cool themselves, total energy requirement over time is low. For the same body weight, poikilotherms need only 5 to 10% of the energy of homeotherms.[7]