当前位置: X-MOL 学术Mol. Phylogenet. Evol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cryptic diversity and non-adaptive radiation of montane New Guinea skinks (Papuascincus; Scincidae).
Molecular Phylogenetics and Evolution ( IF 3.6 ) Pub Date : 2020-01-31 , DOI: 10.1016/j.ympev.2020.106749
Alex Slavenko 1 , Karin Tamar 2 , Oliver J S Tallowin 3 , Allen Allison 4 , Fred Kraus 5 , Salvador Carranza 2 , Shai Meiri 6
Affiliation  

New Guinea, the world's largest and highest tropical island, has a rich but poorly known biota. Papuascincus is a genus of skinks endemic to New Guinea's mountain regions, comprising two wide-ranging species and two species known only from their type series. The phylogeny of the genus has never been examined and the relationships among its species - as well as between it and closely related taxa - are hitherto unknown. We performed the first large-scale molecular-phylogenetic study of Papuascincus, including sampling across the genus' range in Papua New Guinea. We sequenced three mitochondrial and two nuclear markers from 65 specimens of Papuascincus and reconstructed their phylogenetic relationships. We also performed species-delimitation analyses, estimated divergence times and ancestral biogeography, and examined body-size evolution within the genus. Papuascincus was strongly supported as monophyletic. It began radiating during the mid-Miocene in the area now comprising the Central Cordillera of New Guinea, then dispersed eastward colonising the Papuan Peninsula. We found evidence of extensive cryptic diversity within the genus, with between nine and 20 supported genetic lineages. These were estimated using three methods of species delimitation and predominantly occur in allopatry. Distribution and body-size divergence patterns indicated that character displacement in size took place during the evolutionary history of Papuascincus. We conclude that the genus requires comprehensive taxonomic revision and likely represents a species-rich lineage of montane skinks.

中文翻译:

山地新几内亚石龙子(Papuascincus; Scincidae)的隐身多样性和非适应性辐射。

新几内亚是世界上最大,最高的热带岛屿,拥有丰富而鲜为人知的生物群系。Papuascincus是新几内亚山区特有的石龙子属,包括两个广泛的物种和两个仅从其类型系列得知的物种。该属的系统发育从未被检查过,其种类之间以及与近缘类群之间的关系迄今仍是未知的。我们进行了第一项大规模的巴布亚克分子分子系统发育研究,包括在巴布亚新几内亚的属范围内进行采样。我们对来自巴布亚种的65个标本的三个线粒体和两个核标记进行了测序,并重建了它们的系统发生关系。我们还进行了物种定界分析,估计的发散时间和祖先生物地理学,并检查了属内的体型进化。Papuascincus被强烈支持为单系统的。它开始在中新世中期开始辐射,现在包括新几内亚的中央山脉地区,然后向东扩散,定居在巴布亚半岛。我们发现了该属内广泛的隐秘多样性的证据,其中有9至20个受支持的遗传谱系。这些估计是使用三种物种划界方法进行的,并且主要发生在异色学中。分布和体型差异模式表明,在巴布亚斯的进化史上,字符的大小发生了位移。我们得出的结论是,该属需要全面的生物分类学修订,并且很可能代表了山ane皮的物种丰富的血统。它开始在中新世中期开始辐射,现在包括新几内亚的中央山脉地区,然后向东扩散,定居在巴布亚半岛。我们发现了该属内广泛的隐秘多样性的证据,其中有9至20个受支持的遗传谱系。这些估计是使用三种物种划界方法进行的,并且主要发生在异色学中。分布和体型差异模式表明,在巴布亚斯的进化史上,字符的大小发生了位移。我们得出的结论是,该属需要全面的生物分类学修订,并且很可能代表了山ane皮的物种丰富的血统。它开始在中新世中期开始辐射,现在包括新几内亚的中央山脉地区,然后向东扩散,定居在巴布亚半岛。我们发现了该属内广泛的隐秘多样性的证据,其中有9至20个受支持的遗传谱系。这些估计是使用三种物种划界方法进行的,并且主要发生在异色学中。分布和体型差异模式表明,在巴布亚斯的进化史上,字符的大小发生了位移。我们得出的结论是,该属需要全面的生物分类学修订,并且很可能代表了山ane皮的物种丰富的血统。我们发现了该属内广泛的隐秘多样性的证据,其中有9至20个受支持的遗传谱系。这些估计是使用三种物种划界方法进行的,并且主要发生在异色学中。分布和体型差异模式表明,在巴布亚斯的进化史上,字符的大小发生了位移。我们得出的结论是,该属需要全面的生物分类学修订,并且很可能代表了山ane皮的物种丰富的血统。我们发现了该属内广泛的隐秘多样性的证据,其中有9至20个受支持的遗传谱系。这些估计是使用三种物种划界方法进行的,并且主要发生在异色学中。分布和体型差异模式表明,在巴布亚斯的进化史上,字符的大小发生了位移。我们得出的结论是,该属需要全面的生物分类学修订,并且很可能代表了山ane皮的物种丰富的血统。
更新日期:2020-01-31
down
wechat
bug