Abstract

A large proportion of the biodiversity of Amazonia, one of the most diverse rainforest areas in the world, is yet to be formally described. One such case is the Neotropical frog genus Adenomera. We here evaluate the species richness and historical biogeography of the Adenomera heyeri clade by integrating molecular phylogenetic and species delimitation analyses with morphological and acoustic data. Our results uncovered ten new candidate species with interfluve-associated distributions across Amazonia. In this study, six of these are formally named and described. The new species partly correspond to previously identified candidate lineages ‘sp. F’ and ‘sp. G’ and also to previously unreported lineages. Because of their rarity and unequal sampling effort of the A. heyeri clade across Amazonia, conservation assessments for the six newly described species are still premature. Regarding the biogeography of the A. heyeri clade, our data support a northern Amazonian origin with two independent dispersals into the South American Dry Diagonal. Although riverine barriers have a relevant role as environmental filters by isolating lineages in interfluves, dispersal rather than vicariance must have played a central role in the diversification of this frog clade.

中文翻译：

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Adenomera heyeri进化枝（Leptodactylidae）的新热带泡沫嵌套青蛙的系统学和历史生物地理学，并描述了六个新的亚马逊物种

摘要

作为世界上最多样化的热带雨林地区之一，亚马逊地区的生物多样性中有很大一部分尚未正式描述。新热带蛙属Adenomera就是其中一种。我们在这里通过将分子系统发育和物种定界分析与形态学和声学数据相结合，来评估黑麦天牛进化枝的物种丰富度和历史生物地理学。我们的研究结果发现了十个新的候选物种，它们在亚马逊地区具有相互关联的分布。在这项研究中，其中六个正式命名和描述。新物种部分对应于先前确定的候选谱系。F”和“ sp。G'以及以前未报告的血统。由于它们的稀有性和A. heyeri的不平等采样工作在整个亚马逊河的进化枝上，对这六个新描述物种的保护评估仍为时过早。关于黑叶猪笼草进化枝的生物地理学，我们的数据支持了北亚马逊地区的起源，并有两个独立的分散体进入了南美干对角线。尽管河流屏障通过隔离插曲中的世系而具有作为环境过滤器的相关作用，但在这种青蛙进化枝的多样化中，分散作用而不是统一作用必须发挥了核心作用。