0145 How Did Mammalian Sleep Patterns Evolve? Temporal Niche Pursuit In An Evolutionary Model Of Sleep

[摘要] IntroductionEarly mammalian ancestors are thought to have been primarily or exclusively nocturnal to avoid antagonistic interactions with terrestrial dinosaurs. However, fossil evidence indicates that many terrestrial dinosaur predators had invaded the nocturnal niche by the late Mesozoic. Moreover, there is evidence that nocturnality evolved multiple time independently in the early mammalian lineage. These findings suggest a dynamic co-evolution of temporal niche among dinosaurs and early mammals. To investigate this scenario, we used a neurophysiological model of sleep-regulatory circuits to simulate the evolution of sleep patterns in an agent-based predator-prey system.

[学科分类] 生理学