Evans B J, Greenbaum E, Kusamba C, Carter T F, Tobias M L, Mendel S A, Kelley D B
Department of Biology, Center for Environmental Genomics, McMaster University, Hamilton, ON, Canada.
J Zool (1987). 2011 Apr 1;283(4):276-290. doi: 10.1111/j.1469-7998.2010.00769.x.
We describe a new octoploid species of African clawed frog (Xenopus) from the Lendu Plateau in the northern Albertine Rift of eastern Democratic Republic of the Congo. This species is the sister taxon of Xenopus vestitus (another octoploid), but is distinguished by a unique morphology, vocalization and molecular divergence in mitochondrial and autosomal DNA. Using a comprehensive genetic sample, we provide new information on the species ranges and intra-specific diversity of African clawed frogs from the Albertine Rift, including the details of a small range extension for the critically endangered Xenopus itombwensis and previously uncharacterized variation in Xenopus laevis. We also detail a new method for generating cytogenetic preparations in the field that can be stored at room temperature for up to 3 weeks. While extending our understanding of the extant diversity in the Albertine Rift, this new species highlights components of species diversity in ancestral African clawed frogs that are not represented by known extant descendants.
我们描述了一种来自刚果民主共和国东部阿尔贝蒂尼裂谷北部伦杜高原的非洲爪蟾（非洲爪蟾属）新八倍体物种。该物种是非洲饰纹爪蟾（另一种八倍体）的姐妹分类群，但在形态、鸣声以及线粒体和常染色体DNA的分子差异方面具有独特之处。我们利用全面的基因样本，提供了有关阿尔贝蒂尼裂谷非洲爪蟾物种分布范围和种内多样性的新信息，包括极度濒危的伊通布韦非洲爪蟾小范围分布扩展的细节以及非洲爪蟾此前未被描述的变异情况。我们还详细介绍了一种在野外制备细胞遗传学标本的新方法，该标本可在室温下保存长达3周。在扩展我们对阿尔贝蒂尼裂谷现存多样性理解的同时，这个新物种凸显了非洲爪蟾祖先物种多样性中未被已知现存后代所代表的部分。
