Small is beautiful: diversity of freshwater ostracods (Crustacea, Ostracoda) in marginal habitats of the province of Parma (Northern Italy)
Small is beautiful: diversity of freshwater ostracods (Crustacea, Ostracoda) in marginal habitats of the province of Parma (Northern Italy)
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小即是美：帕尔马省（意大利北部）边缘栖息地淡水介形类（甲壳类、介形类）的多样性
DOI：
10.4081/jlimnol.2006.121
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发表时间：
2006
影响因子：
1.6
通讯作者：
V. Pieri
中科院分区：
文献类型：
--
作者：
G. Rossetti;K. Martens;C. Meisch;Stefano Tavernelli;V. Pieri
2004年5月至2005年12月，对帕尔马省小型淡水生境中介形类的分布进行了研究。水池、池塘、浅水湖、喷泉、泉水、沟渠、运河和溪流是本次调查中最常见的水系类型。总共有90个地点位于24至1557平方米之间。共采集样本125份。41个样品中不含介形类，7个样品因未成熟标本或空瓣膜而未被考虑。结果，对58个地点的77个样本进行了分析。只要有可能，就根据瓣膜和肢体的形态在物种水平上进行介形虫鉴定。共记录38个分类单元，分属于熊猫科、斑腿蜂科、网头蜂科和网头蜂科20属。这大约占到了意大利估计的非海洋介形类物种数量的三分之一。提供了阀门的扫描电子显微镜图像。每个站点的最大物种数量为6个。最常见的种类是异型异形线虫、真彩色真彩色线虫、草地假孔藻、眼球线虫和石斑鱼。特别相关的是在意大利发生了已知分布有限的物种，即。孟加拉羊肚菌，簇毛泡菜，Candona cf.Lindneri、Fabaeformisandona breuili和Physcypra kraepelini。还报道了Candona属的一假定新种，这里留有开放命名。我们的结果突出了所谓的“边缘”水生生境作为潜在的生物多样性热点的重要性，尽管淡水生态学家和分类学家普遍对在这些环境中进行科学调查缺乏兴趣。
A study on the distribution of ostracods in small freshwater habitats of the province of Parma was conducted from May 2004 to December 2005. Vernal pools, ponds, shallow lakes, fountains, springs, ditches, canals, and streams were among the most common types of aquatic systems included in this survey. Altogether, 90 sites located between 24 and 1557 m a.s.l. were visited, and 125 samples were collected. 41 samples did not contain ostracods, and 7 samples were not considered because only immature specimens or empty valves were found. Consequently, 77 samples from 58 sites were analysed. Whenever possible, ostracod identification was done at the species level based on the morphology of both valves and limbs. Thirty-eight taxa from 20 genera belonging to the families Candonidae, Ilyocyprididae, Cyprididae, and Notodromadidae were recorded. This roughly accounts for one-third of the estimated number of non-marine ostracod species in Italy. Scanning electron microscopy images of valves are provided. The maximum number of species per site was six. The most frequent species were Heterocypris incongruens, Eucypris virens, Pseudocandona pratensis, Cypria ophthalmica, and Tonnacypris lutaria. Of particular relevance is the occurrence of species with a limited known distribution in Italy, viz. Ilyocypris monstrifica, Potamocypris villosa, Candona cf. lindneri, Fabaeformiscandona breuili and Physocypria kraepelini. A putative new species of the genus Candona, here left in open nomenclature, is also reported. Our results highlight the importance of so-called "marginal" aquatic habitats as potential biodiversity hotspots, in spite of the general lack of interest shown by freshwater ecologists and taxonomists in undertaking scientific investigations in these environments.