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首页> 外文期刊>Belgian Journal of Zoology >First record of Synurella ambulans (Muller 1846)(Amphipoda: Crangonictidae) in Belgium
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First record of Synurella ambulans (Muller 1846)(Amphipoda: Crangonictidae) in Belgium

机译：比利时Synurella ambulans（Muller 1846）（两栖动物：Crangonictidae）的第一个记录

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Macroinvertebrates are one of the groups that are monitored to assess biological water quality: In Flanders (Belgium),they have been sampled during the past 20 years by the Flemish Environment Agency. As a consequence,a large collection of more than 20,000 samples is currently available. More than 2,500 samples containing crustaceans, from the period 1989-2008 and distributed all over Flanders, were investigated at the Laboratory of Environmental Toxicology and Aquatic Ecology (Ghent University) in the scope of an ongoing PhD related to the spread and impact of exotic macro-crustaceans in Flanders.Analysis of these samples revealed that Synurella ambulans (Muller 1846) was sampled for the first time in Belgium in 2003 and again in 2004. However, because identifications were previously limited to the family level,0the species remained unnoticed until 2009. These samples with S. ambulans from 2003 and 2004 were taken by handnet, as described by Gabriels et al. (1) by the Flemish Environment Agency in three places in Snellegem (province Western Flanders). Two of the sampling locations were situated in a small stream (Walbeek) in Vloethemveld,which is in a former military domain that is currently classified as a nature reserve. The third location was in a stream (Kastanjebeek) directly connected to the first one. Both streams run dry during summer and contain dense vegetation in the riverbed.General characteristics of the water are a circumneutral pH (7.0-7.5), a low conductivity (310-395μS/cm) and a high oxygen concentration (7.3-9.1mg/L). The ecological water quality of both streams is moderate, with a MMIF of 0.55 (Multi-metric Macroinvertebrate Index Flanders, (1)). Some taxa sensitive to pollution, such as Trichoptera and Plecoptera, were also present inthe samples. In total, the three samples contained 96 individuals (adults and juveniles) of S. ambulans. Two of the samples were collected at the beginning of May and one sample at the end of April. Several females of S. ambulans carried eggs and 18 juveniles were sampled, indicating that S. ambulans reproduces in these streams. It is unclear how S. ambulans reached this location. One of the possible avenues is anthropogenic introduction via fish ponds, which are situated nearby.
机译：大型无脊椎动物是进行监测以评估生物水质量的组之一：在法兰德斯（比利时），法兰德斯环境局在过去20年中对它们进行了采样。结果，当前有超过20,000个样本的大量收集。在1989年至2008年期间，在根特大学环境毒理学和水生生态学实验室（根特大学）调查了2500多个含有甲壳类动物的样本，这些样本分布在整个法兰德斯，涉及与外来物种的扩散和影响有关的正在进行的博士学位法兰德斯族甲壳类动物。对这些样品的分析表明，2003年在比利时和2004年首次在比利时首次采样到了Synurella ambulans（Muller 1846）。但是，由于以前的鉴定仅限于家族，因此直到2009年该物种仍未被发现如Gabriels等人（2003年）所述，这些样品是2003年和2004年的带链球菌的样本，是通过手网采集的。 （1）由弗拉芒环境局在Snellegem（西弗拉芒省）的三个地方进行。其中两个采样地点位于弗洛特姆维尔德（Vloethemveld）的一条小溪中（沃尔贝克（Walbeek）），该地块属于前军事领域，目前被归类为自然保护区。第三个位置位于直接连接第一个位置的溪流（Kastanjebeek）中。两种水在夏季干dry，河床植被茂密，水的一般特征是pH值在7.0-7.5之间，电导率低（310-395μS/ cm），氧浓度高（7.3-9.1mg / cm）。 L）。两种河流的生态水质均中等，MMIF为0.55（多尺度大型无脊椎动物指数法兰德斯，（1））。样品中还存在一些对污染敏感的分类单元，例如毛鳞翅目和鞘翅目。总共，这三个样本包含96个人（成人和青少年）的门诊链球菌。 5月初收集了两个样本，4月底收集了一个样本。几只雌性链球菌携带卵，并取样了18个少年，这表明它们在这些溪流中繁殖。目前尚不清楚S. ambulans如何到达此位置。一种可能的途径是通过附近的鱼塘进行人为引进。

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