总证据的遗传学分析解决了神灵 (Stomatopoda) 的进化时间表,并提供了对它们的分子和形态进化速率的见解
Cara Van Der Wal1, Shane T Ahyong2, Maxim W D Adams3
1School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia; Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2000, Australia.
Molecular phylogenetics and evolution
|April 7, 2025
概括
曼蒂斯 (Stomatopoda) 已在1.43亿年前进化,其特殊的附属体很早就出现了. 将形态和分子数据结合起来,揭示了对这些海洋捕食者的进化见解.
科学领域:
- 海洋生物学 海洋生物学
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
背景情况:
- 声 (Stomatopoda) 或神灵是多样化的海洋捕食者,具有复杂的视觉系统和狩猎附属物.
- 了解它们的进化历史对于理解海洋生物多样性和适应至关重要.
研究的目的:
- 为了推断 Stomatopoda 秩序内的进化关系.
- 为了估计主要的口足足类谱系的分歧时间.
- 为了研究专门的附录和进化速率的进化.
主要方法:
- 用77个形态特征,整个线粒体基因组和三个核标记物的综合数据集进行了基因组学分析.
- 贝叶斯的放松分子时钟分析与基于化石的校准.
- 对形态和分子进化速率的检查.
主要成果:
- 冠群Unipeltata口足类动物大约在1.43亿年前 (中生代) 出现.
- 在Unipeltata血统中,专门的粉碎和刺的附件很早就发展了.
- 在形态和分子进化速率之间没有发现相关性,但在形态进化中观察到高跨系变异.
结论:
- 将形态和分子数据结合起来,为Stomatopoda提供了强大的家族遗传推断.
- 专门的附属体的早期进化突出显示了 mantis shrimps 中的关键适应辐射.
- 形态进化的高变化表明,在这个群体内有多样化的进化途径.
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