Circadian Rhythms in Amphibians and Reptiles: Ecological Implications
Circadian Rhythms in Amphibians and Reptiles: Ecological Implications
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DOI：
10.1080/09291010412331313278
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发表时间：
2004-02
影响因子：
1.1
通讯作者：
T. Oishi;K. Nagai;Y. Harada;M. Naruse;M. Ohtani;E. Kawano;S. Tamotsu
中科院分区：
文献类型：
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作者：
T. Oishi;K. Nagai;Y. Harada;M. Naruse;M. Ohtani;E. Kawano;S. Tamotsu
回顾了野外和半自然条件下两栖动物和爬行动物的昼夜节律及其潜在机制，包括环境线索的夹带方式和驱动节律的振荡器。对于两栖动物和爬行动物的野外行为节律研究还很少。在无尾两栖动物中，非洲爪蟾成虫表现出比蝌蚪更强的夜间运动活动。这表明两栖动物在不同生命阶段所表现出的活动模式差异具有生态意义，因为同一环境中成体和幼体之间的差异可能有助于部分地将幼体与成体的同类相食现象隔离开来。与两栖动物相比，爬行动物的自由奔跑节奏更加强劲，持续时间也更长。在两栖动物和爬行动物中，多光感受器参与昼夜节律的光夹带。眼睛、松果体复合体和深部大脑由多振荡器系统和多光感受器系统组成。
Circadian rhythms of amphibians and reptiles in the field and under semi-natural conditions and the underlying mechanisms, including the ways of entrainment to environmental cues and the oscillators driving the rhythms, have been reviewed. Studies on the behavioral rhythms in the field are meager in both amphibians and reptiles. In anuran amphibians, Xenopus adults showed more robust nocturnal locomotor activity than did tadpoles. This indicates the ecological significance of the differences in activity pattern shown by amphibians at different life stages, because differences between adults and young in the same environment may serve to isolate partially the young from the adults' cannibalism. In reptiles, free-running rhythms are more robust and continue for a longer time compared to amphibians. In both amphibians and reptiles, multi-photoreceptors are involved in photo-entrainment of circadian rhythms. The eyes, pineal complex and deep brain comprise a multi-oscillator system as well as a multi-photoreceptor system.