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美元鸟 (Eurystomus orientalis) 和蓝色滚珠鸟 (Eurystomus azureus) 综合体中的遗传学多样化的模式

Ulf S Johansson¹, Martin Irestedt², Per G P Ericson²

¹Department of Zoology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden.

Molecular phylogenetics and evolution

|August 23, 2023

概括

美元鸟和蓝色滚子的遗传和形态差异揭示了复杂的物种. 存在几种不同的遗传系,挑战当前的物种分类,并建议新的物种地位.

科学领域:

鸟类学鸟类学是一门学科.
进化生物学进化生物学
遗传学遗传学是一个

背景情况:

品种化涉及遗传隔离和形态差异化,这两者并不总是一致的.
美元鸟 (Eurystomus orientalis) 和 Azure Roller (Eurystomus azureus) 综合体就是一个很好的例子,尽管它们有不同的形态,但 Azure Roller 在遗传上嵌入了美元鸟中.

研究的目的:

为了研究美元鸟/蓝色滚轮复合体内的遗传关系.
用基因组和线粒体数据估计分歧时间并推断进化史.

主要方法:

分析了6475个全基因组内部区域和完整的线粒体基因组.
应用连接和多物种凝聚的植物遗传学方法.

主要成果:

在复合体内确定了至少七种不同的遗传系,与形态变异不完全一致.
索洛蒙尼斯亚种是一种独特的血统,在70万多年前被分离出来.
蓝色滚子嵌在美元鸟中,形成了澳大利亚和新几内亚美元鸟的血统姐妹;亚洲大陆美元鸟存在着深刻的遗传分裂;在瓦拉西亚 (连接) 中支持一个独特的遗传类.

结论:

目前将美元鸟/蓝色滚筒复合体分为两种物种的分类受到遗传发现的挑战.
在基因上孤立的亚种solomonensis保证了物种地位.
需要进一步的研究来重新评估复合体内的其他独特遗传系的物种地位.

关键词:

生物地理学生物地理学生物地理学科拉西科科 (Coraciidae) 是一个鱼家族.人类的家谱 (Phylogeny) 是一个学科.规格规格规格规格种类划界物种的划界方法分类学分类学是指分类学.

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