吃饭后的睡眠在短睡的墨西哥洞穴鱼中
Kathryn Gallman1, Aakriti Rastogi1, Owen North1
1Department of Biology, Texas A&M University, College Station, TX 77840.
bioRxiv : the preprint server for biology
|July 15, 2024
概括
吃饭后的睡眠,或吃饭后的睡眠增加,在墨西哥洞穴鱼和水面鱼的幼虫中观察到. 这表明睡眠-食相互作用甚至在那些已经进化为少睡的人群中仍然存在.
科学领域:
- 行为生物学 行为生物学
- 进化生物学是进化的生物学.
- 神经科学是一个神经科学.
背景情况:
- 睡眠和食行为对于生存至关重要,并且在各种物种中得到保护.
- 许多物种在食物稀缺时减少睡眠,以最大限度地增加食时间.
- 餐后睡眠,即饭后睡眠的增加,在各种动物中观察到,但其演变并未得到充分理解.
研究的目的:
- 为了研究墨西哥 (Astyanax mexicanus) 中睡眠-食相互作用的演变.
- 为了检查食对幼虫和成年表面鱼和两个洞穴鱼种群的睡眠模式的影响.
- 为了确定在进化了睡眠减少的洞穴鱼种群中是否保留食后睡眠.
主要方法:
- 研究了幼虫和成年墨西哥 (表面和洞穴种群) 的睡眠和食行为.
- 监控睡眠时间和时间,与食事件相关.
- 通过不同生命阶段和环境适应来比较食后睡眠反应.
主要成果:
- 幼虫表面和洞穴鱼表现出食后睡眠,增加了饭后的睡眠.
- 睡眠量和食物大小没有相关性,食后睡眠独立于食时间.
- 成长的地表和洞穴鱼没有显示可检测的食后睡眠,可能是由于它们在没有食物的情况下长时间生存的能力.
结论:
- 提供了鱼类模型中食后睡眠的第一个证据,特别是墨西哥四虫幼虫.
- 表明,尽管睡眠丧失的演变,洞穴鱼种群的睡眠-食相互作用仍在维持.
- 假设食后睡眠可能对脆弱幼虫的能量储蓄和生存至关重要.
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