来自加勒比海岛屿 (Squamata,Diploglossidae,Celestinae) 的一个新的森林动物群
Molly Schools1, S Blair Hedges2
1Department of Biology; Center for Biodiversity; 1925 N 12th St Suite 502; Philadelphia; PA 19122; USA. molly.schools@temple.edu.
Zootaxa
|April 2, 2025
概括
这项研究修订了加勒比森林 (Diploglossidae),定义了35种新物种,将总数增加到90种. 超过一半的这些特有爬行动物受到威胁,其中一些可能因息地丧失和入侵掠食者而灭绝.
科学领域:
- 类学 类学 类学 类学
- 进化生物学 进化生物学
- 分子系统学 分子系统学
背景情况:
- 新热带森林 (Diploglossidae) 的分类是有争议的,因为诊断特征和遗传数据有限.
- 之前的分子研究虽然强大,但每种只采样了少数个体,揭示了非单体物种和高遗传分歧,需要新的物种定义.
研究的目的:
- 对来自开曼群岛,牙买加和西班牙群岛的加勒比天森林 (Diploglossidae) 进行系统的修订.
- 通过一种新的分离时间方法定义新物种,将分子和形态数据纳入其中.
主要方法:
- 分析了372个个体的DNA序列数据和958个标本的形态数据.
- 从博物馆标本中提取了DNA,包括可以追溯到近200年的历史型号.
- 开发并应用了一种基于分歧时间的新物种划分方法.
主要成果:
- 定义了17个新物种,17个亚种被提升,一个物种从同义词中删除,导致35个新认可的物种.
- 天的物种数量从25种增加到59种,Diploglossidae的总数增加到90种,其中63种是加勒比海岛屿的特有物种.
- 加勒比地区54%的天鱼物种受到威胁 (14%处于危险之中,17%处于危险之中,2%易受伤害),超过爬行动物的平均水平.
结论:
- 广泛的森林砍伐和小印度蒙古的引入严重影响了加勒比森林.
- 三种危物种可能因人类活动而灭绝,其他几种物种需要立即采取保护措施.
- 这项研究强调了地面息,白天生活的双虫对入侵掠食者和息地退化的脆弱性.
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