10种鱼类在早期发育过程中的生态静态度的本体遗传变化
Kelsea N Downs1, Patrick T Kelly1, Alfredo Ascanio1
1Department of Biology, Miami University, Oxford, Ohio, USA.
Ecology
|October 2, 2023
概括
脊椎动物的身体组成,包括碳,和,在早期发育过程中发生显著变化. 这些元素变化在各个物种中是一致的,特别是在生命早期,影响生长和营养循环.
科学领域:
- 生态生态学 生态生态学
- 发展生物学 发展生物学
- 生物地质化学生物地质化学
背景情况:
- 脊椎动物身体的元素组成在本体发生过程中发生变化,特别是随着骨的形成.
- 人们对早期发育阶段元素组成的物种变异知之甚少.
- 元素比率影响生长限制和营养循环的贡献.
研究的目的:
- 在鱼类中量化全身元素组成 (碳,,,,) 和比例的本体变异.
- 研究这些变化如何与不同物种的相对大小和年龄有关.
- 了解对生长和营养循环的影响.
主要方法:
- 测量了从胚胎到2-3个月的10种鱼类中碳,,,和RNA的全身度.
- 分析了从胚胎到2-3个月龄的本体遗传趋势.
- 检查了相对于年龄和相对尺寸 (身体长度/成人长度) 的趋势.
主要成果:
- 身体和在不同物种的早期发育 (胚胎到大约5-8%的成年人大小) 中迅速增加.
- 在这个早期时期,身体碳,C:N,C:P和N:P的比率下降.
- 体内在物种之间变化较大;RNA在幼虫中达到峰值,然后下降.
- 在~5-8%的成年人体大小后,构成变化是最小的,大多数变化发生在1个月前.
结论:
- 早期的体质变化在体内固体测量是非常一致的跨鱼类物种.
- 这些动态很可能是由元素分配到骨和其他组织的保留约束驱动的.
- 早期发育期的固体测量显著影响个人生长和生态系统的营养循环.
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