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A molecular approach towards taxonomic identification of elasmobranch species from Maltese fisheries landings

机译:来自马耳他渔业着陆的Elasmobranch物种的分子方法

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AbstractThe mitochondrial genome, through the application of DNA barcoding, provides a powerful tool for identifying species even when specimens are either incomplete or belong to species that exhibit cryptic diversity. In fisheries management accurate identification of whole or part of the specimens landed is a fundamental requirement for the conservation of species affected directly or indirectly by the fisheries activities. In this study cytochromecoxidase subunit I (COI) and NADH dehydrogenase subunit 2 (ND2) sequences were used to genetically distinguish 36 elasmobranch species collected from Maltese (Central Mediterranean) commercial fisheries landings. Each species was analysed using these two mtDNA loci where COI (610bp) and ND2 (990bp) efficiently distinguished between the various species studied, leading to the identification of 101 haplotypes, with the intraspecificp-distance ranging between 0 and 0.75% (mean 0.10%, SD ±0.13%). This study enhances the molecular data available on elasmobranchs by providing new ND2 sequences for various species, while providing both COI and ND2 data for poorly studied Mediterranean species including: the large pelagic sharksAlopias vulpinus,A. superciliosus,Carcharhinus altimus,C. plumbeus,Carcharadon carcharias,Isurus oxyrinchus,Prionace glaucaandOdontaspis ferox; the smaller demersal sharksSomniosus rostratus,Squatina aculeata,S. oculataa
机译:<![cdata [ 抽象 通过应用DNA条形码的应用,即使样品也是如此,也为识别物种提供了强大的工具不完整或属于表现出隐秘多样性的物种。在渔业管理中,整个或部分标本的准确识别是渔业活动直接或间接影响物种保护的基本要求。在该研究中,细胞色素 C 氧化酶亚基I(COI)和NADH脱氢酶亚基2(ND2)序列用于遗传区分36种从马耳他(中央地中海)商业渔业着陆收集的36种Elasmobranch物种。使用这两个MTDNA基因座进行分析每种物种,其中COI(610bp)和Nd2(990bp)有效地区分各种物种,导致鉴定101个单倍型,具有内侧的 p - 距离0和0.75%(平均值0.10%,SD±0.13%)。本研究通过为各种物种提供新的ND2序列,增强了Elasmobranchs上可用的分子数据,同时为学习的地中海物种提供了COI和ND2数据,包括:大型骨库鲨鱼 alopiasVulpinus a。 SuperCilioSus Carcharhinus Altimus c。 Plumbeus Carcharadon Carcharias iSurus oxyrinchus 斜视胶原glauca odontaspis ferox ;较小的过度鲨鱼 somniosus rostratus squatina aculeata s。 Oculata a

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