Turanov Sergei V, Kartavtsev Yuri Ph
Laboratory of Molecular Systematic, A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia.
Chair of Water Biological Resources and Aquaculture, Far Eastern State Technical Fisheries University, 690087 Vladivostok, Russia.
Genome. 2021 Oct;64(10):927-936. doi: 10.1139/gen-2020-0192. Epub 2021 Apr 14.
The seas of the North Pacific Ocean are characterized by a large variety of fish fauna, including endemic species. Molecular genetic methods, often based on DNA barcoding approaches, have been recently used to determine species boundaries and identify cryptic diversity within these species. This study complements the DNA barcode library of fish from the Northeast Pacific area. A library based on 154 sequences of the mitochondrial gene from 44 species was assembled and analyzed. It was found that 39 species (89%) can be unambiguously identified by the clear thresholds forming a barcoding gap. Deviations from the standard 2% threshold value resulted in detection of the species in the sample, which is not typical for the eastern part of the Bering Sea. This barcoding gap also made it possible to identify naturally occurring low values of interspecific divergence of eulittoral taxa and the deep-sea genus . Synonymy of the genus in favor of the genus is suggested based on both the original and previously published data.
北太平洋海域以种类繁多的鱼类区系为特征，包括特有物种。分子遗传学方法，通常基于DNA条形码技术，最近已被用于确定物种界限并识别这些物种中的隐秘多样性。本研究补充了东北太平洋地区鱼类的DNA条形码文库。构建并分析了一个基于44个物种的线粒体基因154个序列的文库。结果发现，39个物种（89%）可以通过形成条形码间隙的清晰阈值明确鉴定。与标准2%阈值的偏差导致在样本中检测到该物种，这在白令海东部并不典型。这种条形码间隙还使得能够识别潮间带分类群和深海属物种间自然存在的低分化值。基于原始数据和先前发表的数据，建议将属同义化为属。
