A revision of the crustacean genus Eurycercus with genetic and morphological evidence for a new species, Eurycercus beringi, from Alaska, 2011

This data contains genetic sequences of crustaceans from the mitochondrial genome in support of the discovery and description of a new species of crustacean in Alaska, Eurycercus beringi.
We carried out a detailed anatomical and genetical analysis of Holarctic crustaceans of the freshwater genus Eurycercus in order to understand the biodiversity and potential implications of recent environmental change and surface water loss in the Arctic. We described new species and revised the subgenus. The genus is an important source of food for fish, waterfowl, and wading birds. Eurycercus is also used in paleolimnology to reconstruct past environmental conditions. We aimed for thorough geographic coverage of subarctic and arctic Siberia, Greenland, Alaska and Canada. The genetic results support the revision of the genus Eurycercus and the novel species E. beringi.

本数据集包含甲壳类动物的线粒体基因组（mitochondrial genome）基因序列，旨在支持阿拉斯加新甲壳类物种——白令真枝角类（Eurycercus beringi）的发现与描述。为揭示北极地区生物多样性特征，以及近期环境变化与地表水流失的潜在影响，我们对淡水真枝角属（Eurycercus）的全北区甲壳类动物开展了详细的解剖学与遗传学分析。我们描述了新物种，并对亚属分类进行了修订。该属动物是鱼类、水禽及涉禽的重要食物来源。真枝角属还被应用于古湖沼学（paleolimnology）研究，以重建历史环境条件。我们力求覆盖西伯利亚亚北极与北极地区、格陵兰岛、阿拉斯加及加拿大的完整地理范围。遗传学分析结果为真枝角属的分类修订及新物种E. beringi的确立提供了支持。