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Environmental DNA reveals cryptic diversity within the subterranean amphipod genus Pseudocrangonyx Akatsuka & Komai, 1922 (Amphipoda: Crangonyctoidea: Pseudocrangonyctidae) from central Japan
Journal of Crustacean Biology ( IF 1.2 ) Pub Date : 2020-05-29 , DOI: 10.1093/jcbiol/ruaa028
Satoru Yonezawa 1 , Takafumi Nakano 2 , Naoyuki Nakahama 3 , Ko Tomikawa 4 , Yuji Isagi 1
Affiliation  

An environmental DNA (eDNA) detection method confirms the presence of the subterranean amphipod genus PseudocrangonyxAkatsuka & Komai, 1922 in the city of Kyoto, Honshu, Japan for the first time in more than 90 years. Phylogenetic trees using partial sequences of the 16S rRNA gene of eDNA samples from Kyoto and specimens collected from various locations in Japan and Korea highlight that two genetically distinct taxonomic units inhabit Kyoto’s subterranean environments. Results reveal that the ranges of distinct phylogroups of Pseudocrangonyx widely overlap with each other around Lake Biwa in central western Honshu. The eDNA results increase our understanding of the species richness and complicated evolutionary history of these stygobitic amphipods.

中文翻译:

环境DNA揭示了来自日本中部的地下两栖动物类假单胞菌Pseudocrangonyx Akatsuka&Komai,1922年(两栖动物:Crangonyctoidea:Pseudocrangonyctidae)内的神秘多样性。

一种环境DNA(eDNA)检测方法证实了地下两栖动物类Pseudocrangonyx的存在Akatsuka&Komai,1922年,在日本本州的京都市,这是90多年来第一次。系统发育树使用了来自京都的eDNA样本的16S rRNA基因的部分序列以及从日本和韩国的不同地点收集的样本,突显出两个遗传上不同的生物分类单元居住在京都的地下环境中。结果显示,本州中部西部琵琶湖周围的假单胞菌属的不同系统群的范围广泛重叠。eDNA的结果加深​​了我们对这些定律两栖类两足动物的物种丰富性和复杂进化史的理解。
更新日期:2020-07-21
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