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幼儿园网络蜘蛛 (Araneae: Pisauridae) 的分子遗传学
Sarah A Morris1, Nicolas A Hazzi2, Gustavo Hormiga1
1Department of Biological Sciences, The George Washington University, 2029 G St. NW, Washington, DC 20052, USA.
Molecular phylogenetics and evolution
|November 21, 2024
概括
幼儿园网络蜘蛛家族Pisauridae不是单体的. 研究人员建议恢复Dolomedidae家族,包括某些属,澄清Pisauridae子家族.
科学领域:
- 类学和进化生物学.
- 分子遗传学和分类学.
背景情况:
- 松鼠科 (幼儿园网络蜘蛛) 是一个分布在全球的家族,具有多样化的生命历史.
- 之前的研究质疑了Pisauridae的单一性,缺乏明确的形态突变.
- 在Pisauridae中,分家族划分一直是一个持续的分类学挑战.
研究的目的:
- 通过使用九个遗传标记和超级保存元素 (UCEs) 来推断Pisauridae的强大的族系.
- 为了测试Pisauridae家族的单类动物,并解决家族内关系.
- 建议对一个单体鱼类和相关家族进行分类学修订.
主要方法:
- 通过使用9个遗传标记物 (12S,16S,18S,28S,actin,COI,histon H3,ITS2,NADH) 对81种种种类 (59种Pisauridae) 的遗传学分析.
- 集成超保存元素 (UCEs) 来增强遗传学分辨率.
- 使用最大概率和基因凝聚分析推断进化关系.
主要成果:
- 遗传学分析强烈表明,目前定义的Pisauridae家族不是单属的.
- 这项研究支持Dolomedidae家族的复活,包括Dolomedes和Bradystichus等属.
- 提供了三种Pisauridae亚科 (Halinae,Thaumasiinae,Pisaurinae) 的遗传学界限;十个属仍然是不确定的.
结论:
- 目前Pisauridae的划分需要修订,因为它不是单一的.
- 根据分子和形态学证据,建议恢复Dolomedidae家族并重新分类特定的属.
- 讨论了Dolomedidae及其子家族的诊断特征,以及排除的属的分类说明.
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