的特有性模式:来自马卡罗尼西亚的属Xanthoparmelia的另一个范式转移的例子
Israel Pérez-Vargas1, Javier Tuero-Septién1, Nereida M Rancel-Rodríguez1
1Department of Botany, Ecology and Plant Physiology, Faculty of Pharmacy, University of La Laguna, Apdo Postal 456, 38200 La Laguna, Canary Islands, Spain.
Journal of fungi (Basel, Switzerland)
|March 27, 2024
概括
一种新的虫物种,Xanthoparmelia ramosae,是格兰卡纳利亚岛的特有物种,挑战了关于真菌分布的传统观点. 它的发现,与遗传数据一起,揭示了与东非真菌有着惊人的进化联系.
科学领域:
- 菌类学 菌类学是指菌类学.
- 进化生物学 进化生物学
- 岛屿生物地理 岛屿生物地理
背景情况:
- 传统上,形真菌被认为具有广泛的分布范围,特有物种被认为是罕见的.
- "小的东西无处不在"的范式影响了密码组的这个假设.
- 最近的发现,特别是在海洋岛屿上,正在挑战这种长期以来的观点.
研究的目的:
- 描述一种新的鱼物种,Xanthoparmelia ramosae,是格兰卡纳利亚岛的特有物种.
- 为了研究这个新物种的进化历史和生物地理分离.
- 挑战传统的范式的广泛分布范围在形形成的真菌.
主要方法:
- 进行了形态,化学和宏观气候分析.
- 三种分子标记物 (ITS rDNA,nuLSU rDNA和mtSSU) 用于遗传学分析.
- 使用约会分析来估计分歧时间.
主要成果:
- Xanthophamelia ramosae被描述为一种新物种,是格兰卡纳利亚岛的特有物种.
- 遗传学分析显示,X. ramosae与来自东非的种群聚集在一起,这表明存在显著的生物地理断层.
- 约会分析表明,在普略世时代,它与非洲的亲戚有所分离.
结论:
- 发现X. ramosae支持越来越多的证据表明土著鱼物种存在,特别是在岛上.
- 观测到的格兰·卡纳里亚和东非之间的断层,可以追溯到普略世,表明遗物理论作为一个潜在的解释.
- 需要进一步研究非洲的藻学知识缺口,以充分探索这种血统的生物地理历史.
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