Nebela jiuhuensis nov sp (Amoebozoa; Arcellinida; Hyalospheniidae): A New Member of the Nebela saccifera - equicalceus - ansata Group Described from Sphagnum Peatlands in South-Central China
Nebela jiuhuensis nov sp (Amoebozoa; Arcellinida; Hyalospheniidae): A New Member of the Nebela saccifera - equicalceus - ansata Group Described from Sphagnum Peatlands in South-Central China
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Nebela jiuhuensis nov sp（Amoebozoa；Arcellinida；Hyalospheniidae）：中国中南部泥炭地 Nebela saccifera - equalcalceus - ansata 群的新成员
DOI：
10.1111/jeu.12300
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发表时间：
2016
影响因子：
2.2
通讯作者：
Mitchell Edward A. D.
中科院分区：
文献类型：
--
作者：
Qin Yangmin;Man Baiying;Kosakyan Anush;Lara Enrique;Gu Yansheng;Wang Hongmei;Mitchell Edward A. D.
透明蝶是高纬度泥炭地和森林腐殖质中最常见和最显著的无瓣变形虫之一。这些遗属变形虫作为生物指示物被广泛研究，并越来越多地被用作微生物生物地理学的模型。然而，泥炭地的多样性和生态数据在地理上的分布仍然非常不均匀：值得注意的是，低纬度泥炭地的数据缺乏。本文描述了中国中南部长江中游泥炭地的一新种Nebela jiuhuensis，它具有独特的形态特征。试验（壳体）具有中空的角状横向延伸，也发现了inN。saccifera， N. equicalceus (=N。hippocrepis)啊。三种主要分布于北美东部沼泽地带的大型物种。线粒体细胞色素氧化酶（COI）数据证实n。与形态非常相似的北美种有密切关系。更遥远的地方。ansatawithin。penardianagroup。这些物种都存在于生长在贫瘠沼泽的湿苔藓中。早先在韩国泥炭地发现的形态相似标本的报告表明，n。九川可能分布在东亚（中国和韩国）类似的泥炭地。在中国泥炭地发现如此引人注目的新物种表明，许多新的珍稀变形虫物种尚未被发现，包括潜在的区域特有物种。此外，人类活动（如排水、农业和污染）已经减少了已知的野生动物栖息地。因此，它可以被认为是当地濒危物种。因此，我们建议，这种地理分布可能有限，栖息地要求特定的非常显眼的微生物应该被视为微生物生物地理学和当地环境保护和管理的旗舰物种。
Hyalospheniids are among the most common and conspicuous testate amoebae in high‐latitude peatlands and forest humus. These testate amoebae were widely studied as bioindicators and are increasingly used as models in microbial biogeography. However, data on their diversity and ecology are still very unevenly distributed geographically: notably, data are lacking for low‐latitude peatlands. We describe here a new species,Nebela jiuhuensis, from peatlands near the Middle Yangtze River reach of south‐central China with characteristic morphology. The test (shell) has hollow horn‐like lateral extensions also found inN. saccifera, N. equicalceus (=N. hippocrepis),andN. ansata, three large species restricted mostly toSphagnumpeatlands of Eastern North America. Mitochondrial cytochrome oxidase (COI) data confirm thatN. jiuhuensisis closely related to the morphologically very similar North American speciesN. sacciferaand more distantly toN. ansatawithin theN. penardianagroup. These species are all found in wet mosses growing in poor fens. Earlier reports of morphologically similar specimens found in South Korea peatlands suggest thatN. jiuhuensismay be distributed in comparable peatlands in Eastern Asia (China and Korea). The discovery of such a conspicuous new species in Chinese peatlands suggests that many new testate amoebae species are yet to be discovered, including potential regional endemics. Furthermore, human activities (e.g., drainage, agriculture, and pollution) have reduced the known habitat ofN. jiuhuensis, which can thus be considered as locally endangered. We, therefore, suggest that this very conspicuous micro‐organism with a probably limited geographical distribution and specific habitat requirement should be considered as a flagship species for microbial biogeography as well as local environmental conservation and management.