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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2013 Vol.32 No.3

Application of DNA Barcoding in insect taxonomy
Author of the article:SONG Nan1,2#, LIU Jie3#, CAI Wanzhi2, ZHAO Zhongyi1*
Author's Workplace:(1. Henan Bureau of Entry-exit Inspection and Quarantine, Zhengzhou 450003, China; 2. Department of Entomology, China Agricultural University, Beijing 100094, China; 3. Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China)
Key Words:DNA barcoding; insect taxonomy; species identification; existing problem
Abstract:DNA barcoding is a new technique in the field of taxonomy. This technique is based on a fragment of DNA sequence, such as the mitochondrial CO gene, on which we can identify organisms by assessing its similarity to a set of reference taxa. The CO gene is conservative enough to be amplified by the “universal primers”. Meanwhile, diversity in nucleotide sequences of the same gene region of CO permits the discrimination of closely allied species. In recent years, DNA barcoding had been widely applied to the insect taxonomy, especially in species identification of different insects and biodiversity researches. DNA barcoding is generally considered as a reliable, cost-effective and easy tool in molecular identification, yet it has faced several taxonomic and molecular problems. Firstly, DNA barcoding should be used as a tool for species identification instead of species definition. Secondly, there are several issues in the DNA barcoding methodologies including gene locus selection, compatibility with traditional taxonomic system, and pseudogenes as well. This paper aims to review the DNA barcoding technique and its applications in insect taxonomy. Some problems and possible solutions in this technique will be analyzed as well.
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