氧化状态的变化,但不是结构和生理发展,与不断变化的本体遗传环境相关
Joshua M Allen1, Brett L Hodinka1, Raven A Barbera1
1Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.
The Journal of experimental biology
|June 30, 2023
概括
发育阶段对欧洲鸟的特征道化有影响. 虽然结构和生理特征表现出强度,但抗氧化能力变得对飞行近期的环境变化敏感.
科学领域:
- * 进化生物学 进化生物学
- * 发育生物学 发育生物学
- * 鸟类学 鸟类学
背景情况:
- * 道化,特征发展对环境变化的强度,对于健康至关重要.
- * 了解发育阶段如何影响道化至关重要,尤其是在像鸟这样的生命阶段过渡期间.
- *以前的研究很少考虑发育阶段对特征道化的影响.
研究的目的:
- * 调查欧洲 (Sturnus vulgaris) 在两个发育阶段对环境变化的形态和生理特征的敏感性.
- * 为了确定在早期发育过程中观察到的特征道化是否会在晚期发育过程中持续存在,特别是在飞前的时期.
主要方法:
- * 试验操纵欧洲鸟化时的繁殖规模.
- * 在发育晚期 (接近鸟期) 期间,在高质量和低质量环境之间交叉养.
- *在两个时间点 (15日和20日) 测量身体尺寸 (质量,体,翅膀长度),有氧能力和氧化状态.
主要成果:
- *减少的小重量更大,在非对称质量 (第15天) 时具有较低的活性氧代谢物.
- *结构大小,有氧能力和抗氧化能力在很大程度上不受早期发育中的实验繁殖规模的影响.
- * 结构和生理特征的道化持续到晚期发育,但抗氧化能力对交叉培养治疗表现出敏感性.
- *在早期发育期间扩大的繁殖中,在交叉养后保持了高水平的活性氧代谢物,这表明转移氧化成本.
结论:
- *特征特异性道化随着发育阶段的变化而变化,随着新生的方法,抗氧化能力对环境变得更加敏感.
- * 在低质量的环境中进行道化开发可能会产生氧化成本,即使条件有所改善,这种成本仍然存在.
- *出生环境对发育的影响依赖于阶段,突出显示了整个生物体生命周期中特征强度的复杂性.
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