哺乳学中的2西格玛属概念:拉西乌鲁斯的教训
Amy B Baird1, Janet K Braun2, Mark D Engstrom3
1Department of Natural Sciences, University of Houston - Downtown, Houston, Texas, United States of America.
PloS one
|June 25, 2025
概括
这项研究提出了一个新的"二西格玛属概念"来分类蝙蝠,使用遗传分歧来定义属. 根据这种新的遗传学方法,拉西乌林蝙蝠最好分为三种属.
科学领域:
- 分类学和系统学.
- 分子进化分子进化
- 哺乳动物学 哺乳动物学
背景情况:
- 种类概念已经确立,但更高的分类学群定义,如属,缺乏共识.
- 属级对于科学命名来说至关重要,需要一种稳定且具有生物学意义的分类方法.
- 关于Lasiurine蝙蝠中属的数量存在分歧,根据形态学和遗传数据,建议范围从1到3个.
研究的目的:
- 探索使用Lasiurine蝙蝠作为模型系统的通用级分类学.
- 开发一种一致且具有生物学意义的方法来确定仿制品的地位.
- 提出基于遗传差异的"二西格玛属概念",用于基于基因差异的属级分类.
主要方法:
- 基因差异的比较分析使用细胞染色体b (Cytb) 序列在白类蝙蝠.
- 遗传学分析以确定姐妹属及其分歧水平.
- 应用"二西格玛属概念",定义属基于遗传距离相对于平均值和标准偏差的姐妹属差异在一个更高的分类学类别.
主要成果:
- 在Vespertilioninae中,使用Cytb的姐妹属之间的平均遗传距离为20.68%±3.89%.
- 拟议的新属需要与其姐妹属的遗传距离>12.90%.
- 拉西类蝙蝠表现出 31.14% ± 1.64% 的姐妹属差异,使他们被归类为更高的类别 (部落),内部血统被归类为属 (21.77% 和 22.91% 的差异).
结论:
- 类蝙蝠最好分为三个不同的属,以确保它们的子家族内的分类学一致性.
- "2西格玛属概念"为属级分类学提供了一个统计学上稳健的和遗传学上的方法.
- 拟议的方法,利用遗传分歧值,可以应用于其他蝙蝠子家族和潜在的其他类型.
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