期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 37, 期 3, 页码 674-685出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2005.05.001
关键词
Amphibia; Ranidae; Cacosterninae; Petropedetinae; Pyxicephalinae; Raninae; Tomopterninae; molecular phylogeny; conservation priorities; biodiversity hotspot; Africa
In sub-Saharan Africa, amphibians are represented by a large number of endemic frog genera and species of incompletely clarified phylogenetic relationships. This applies especially to African frogs of the family Ranidae. We provide a molecular phylogenetic hypothesis for ranids, including 11 of the 12 African endemic genera. Analysis of nuclear (rag-1, rag-2, and rhodopsin genes) and mitochondrial markers (12S and 16S ribosomal RNA genes) provide evidence for an endemic clade of African genera of high morphological and ecological diversity thus far assigned to up to five different subfamilies: Afrana, Cacosternum, Natalobatrachus, Pyxi-cephalus, Strongylopus, and Tomopterna. This clade has its highest species diversity in southern Africa, suggesting a possible biogeographic connection with the Cape Floral Region. Bayesian estimates of divergence times place the initial diversification of the southern African ranid clade at similar to 62-85 million years ago, concurrent with the onset of the radiation of Afrotherian mammals. These and other African ranids (Conraua, Petropedetes, Phrynobatrachus, and Pytchadena) are placed basally within the Ranoidae with respect to the Eurasian groups, which suggests an African origin for this whole epifamily. (c) 2005 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据