生物技术通报 ›› 2018, Vol. 34 ›› Issue (12): 56-62.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0580

• 技术与方法 • 上一篇    下一篇

环境DNA技术在鱼类资源研究中的应用

郝雅宾, 张爱菊, 刘金殿, 顾志敏   

  1. 浙江省淡水水产研究所 农业农村部淡水渔业健康养殖重点实验室 浙江省淡水水产遗传育种重点实验室 中国水产科学研究院东海水产研究所浙江研究中心,湖州 313001
  • 收稿日期:2018-06-23 出版日期:2018-12-26 发布日期:2018-12-24
  • 作者简介:郝雅宾,男,硕士,工程师,研究方向:水生生物资源保护与开发;E-mail:hao_ya_bin@126.com
  • 基金资助:
    浙江省科技厅公益技术应用研究项目(2017C33103)

Application of Environmental DNA Technology in the Study of Fish Resources

HAO Ya-bin ZHANG Ai-ju LIU Jin-dian GU Zhi-min   

  1. Zhejiang Institute of Freshwater Fisheries,Ministry of Agriculture and Rural Affairs Key Laboratory of Healthy Freshwater Aquaculture,Key Laboratory of Freshwater Aquaculture Genetic and Breeding of Zhejiang Province,Zhejiang Research Center of East China Sea Fishery Research Institute,Huzhou 313001
  • Received:2018-06-23 Published:2018-12-26 Online:2018-12-24

摘要: 环境DNA(Environmental DNA,eDNA)是指从生物体生活环境中直接提取到的不同物种DNA片段的总和,eDNA在鱼类资源研究上越来越热,主要是在鱼类的特异性基因识别片段的基础上,与利用分子手段检测eDNA所获得的识别片段进行比对,进而确定水环境中鱼类是否存在的一种技术,是一种新型的生物资源调查手段。与传统方法相比,eDNA技术具高灵敏、低成本、无损伤等优点,能够快速的检测出入侵种、濒危种及稀有种等种类,但也存在一些不足之处,如不能获得目标物种存在或不存在的实时数据、不能获得物种各生长阶段等的生物学特征以及种群结构、不能将“纯种”与杂交种区分开来。eDNA技术对于鱼类资源研究具有颠覆性意义,并展现出良好的发展势头。主要综述了基于eDNA技术在鱼类物种多样性研究、资源量估算和种群分布等研究中的应用进展,以期为渔业资源研究提供一些思考。可以预期,eDNA技术与传统调查方法相结合将成为鱼类资源研究的一个发展趋势。

关键词: 环境DNA, eDNA技术, 鱼类资源

Abstract: Environmental DNA(eDNA)refers to the sum of DNA fragments of different species extracted directly from the living environment of organisms,and eDNA is becoming more and more popular in the study of fish resources. It is a novel investigation approach for biological resources,i.e.,whether or not existence of fish species in a water environment can be determined,based on the identification of specific gene fragments of fish and by aligning with the identification fragments obtained via molecular methods to detect eDNA. Compared with traditional methods,eDNA technology has the advantages of high sensitivity,low cost,and no damage. It can quickly detect invasive species,endangered species,and rare species. However,there are some deficiencies for it,for instance,the real-time data whether target species exist or not cannot be acquired,biological characteristics such as the growth stages of species as well as population structure cannot be obtained,“purebreds” cannot be distinguished from hybrids. The eDNA technology is of subversive significance to the study of fish resources and shows a good momentum of development. This article mainly reviews the application of eDNA technology in the research of fish species diversity,resource estimation and population distribution,aiming at providing some ideas for the study of fishery resources. It can be expected that the combination of eDNA technology and traditional survey methods will become a development trend for fish resources research.

Key words: environmental DNA, eDNA technology, fish resources