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Updated: Jul 24, 2026
08:02
Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
Published on: May 7, 2016
在两种后古老时代的克莱德中脱离进化和生态的时间模式
F K McKinney1, S Lidgard, J J Sepkoski
1Department of Geology, Appalachian State University, Boone, NC 28608-2067, USA. mckinneyfk@appstate.edu
Science (New York, N.Y.)
|August 7, 1998
概括
进化成功和生态主导地位在数百万年内可能会有很大的差异. 单靠对分类学多样性的计算,还不能完全捕捉到像Cyclostomata和Cheilostomata这样的动物类的生态重要性.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 海洋生态海洋生态学
背景情况:
- 分类学多样性计数是跟踪化石记录中的宏观进化模式的标准.
- 类动物,特别是环类和类,是重要的海洋无脊椎动物,具有独特的进化历史.
- 以前的研究通常依赖于多样性指标,可能会忽视生态动态.
研究的目的:
- 调查Cyclostomata和Cheilostomata之间具有相对生态重要性的世俗模式.
- 为了确定标准的多样性指标是否准确地反映了化石动物中的生态主导地位.
- 为了评估在白纪-第三纪大灭绝之后的Cheilostomata的生态恢复.
主要方法:
- 在地质时间尺度上对化石动物的发生和多样性数据的分析.
- 基因多样性和动物内部物种丰富度与生态重要性指标的比较.
- 在白纪-第三纪的边界上检查类组合的变化.
主要成果:
- 一般的多样性和物种丰富度指标并不完全代表Cyclostomata和Cheilostomata的生态重要性.
- 在白纪-第三纪灭绝事件后,Cheilostomata的延迟生态恢复在多样性编译中并不明显.
- 数百万年来,人们观察到进化成功 (多样性) 和生态主导之间的脱.
结论:
- 标准的多样性计数不足以充分理解宏观进化生态动态.
- 进化成功和生态主导地位可以是不同的和异步的,甚至在长时间内.
- 需要重新考虑评估化石记录中的进化和生态模式的指标.
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