In the foothill zone-Sabanejewia balcanica (Karaman 1922), in the lowland zone-Sabanejewia bulgarica (Drensky, 1928): Myth or reality?,Ecology and Evolution

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In the foothill zone-Sabanejewia balcanica (Karaman 1922), in the lowland zone-Sabanejewia bulgarica (Drensky, 1928): Myth or reality?
Ecology and Evolution ( IF 2.3 ) Pub Date : 2020-07-03 , DOI: 10.1002/ece3.6529
Peter Križek ₁ , Jan Mendel ₂ , Jakub Fedorčák ₁ , Ján Koščo ₁

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The status of golden loaches (genus Sabanejewia ) in the region of Central Europe and Balkans is still ambiguous. The greatest controversy is caused by species Sabanejewia balcanica and S. bulgarica . Both species are characterized by a wide spectrum of morphological variability and overlapping of distinguishing features, which then lead to difficulties in their determination. Previous phylogenetic studies aimed on the resolving of their taxonomic status did not include samples from their type localities and so led to a lack of their true distribution in this region. Therefore, the main aim of this study was to identify taxonomic status of golden loaches populations in the region of the middle Danube basin and adjacent areas on the model territory of Slovakia. For this purpose, we used novelty approach (morphological, molecular, and microhabitat) and we also included the missing samples from the type localities of both species. Based on mtDNA all the Slovakian samples reflected haplotype richness revealed on the type locality of S. bulgarica , although the genetic distances from other representatives of the genus Sabanejewia occurring are not significant. Within the morphology, we have revealed a great measure of variability in studied populations, which is largely caused by different habitat conditions and thus representing a phenotypic plasticity of these fish.

中文翻译：

在山麓地带——Sabanejewia balcanica (Karaman 1922)，在低地地带——Sabanejewia bulgarica (Drensky, 1928)：神话还是现实？

金泥鳅（ Sabanejewia属）在中欧和巴尔干地区的地位仍然不明确。最大的争议是由Sabanejewia balcanica和S. bulgarica物种引起的。这两个物种都具有广泛的形态变异性和区分特征的重叠，这导致了确定它们的困难。先前旨在解决其分类地位的系统发育研究并未包括其模式产地的样本，因此导致缺乏其在该地区的真实分布。因此，本研究的主要目的是确定斯洛伐克示范领土多瑙河盆地中部地区和邻近地区金泥鳅种群的分类状况。为此，我们使用了新颖的方法（形态、分子和微生境），并且还纳入了两个物种模式产地的缺失样本。基于 mtDNA，所有斯洛伐克样本都反映了保加利亚沙门氏菌模式产地所揭示的单倍型丰富度，尽管与出现的Sabanejewia属其他代表的遗传距离并不显着。在形态学方面，我们揭示了所研究种群的巨大变异性，这很大程度上是由不同的栖息地条件引起的，因此代表了这些鱼的表型可塑性。

更新日期：2020-07-30

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