›› 2013, Vol. 40 ›› Issue (9): 8-15.

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Molecular Biological Identification of Dermacentor nuttalli and Dermacentor marginatus

LV Ji-zhou1, WANG Zhen-bao2, YUAN Xiang-fen1, WU Shao-qiang1   

  1. 1. Institute of Animal Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100029, China;
    2. Yili Entry-exit Inspection and Quarantine Bureau, Yili 835000, China
  • Received:2013-01-31 Online:2013-09-20 Published:2013-09-18

Abstract: This study was to establish a method for identifying Dermacentor nuttalli (D.nuttalli) and Dermacentor marginatus (D.marginatus) with molecular markers, and to study the phylogenetic relationship of these two species of ticks. Ticks were collected from domestic animals in Xinjiang province and classified by morphology characters. Then 16S rRNA and COⅠ of ticks were amplified by PCR and subsequently sequenced. Phylogenetic trees were constructed by Mega 5.0 and Mrbayes 3.2. On the phylogenetic trees based on 16S rRNA, D.nuttalli was clustered together with their respective class D.nuttalli, and D.marginatus formed a distinct branch. Moreover, D.marginatus was clustered with their respective class D.marginatus, and D.nuttalli formed a distinct branch on the phylogenetic trees based on COⅠ. Based on morphology and combined with molecular biology identification the method was a simple, accuracy method for the identification of D.nuttalli and D.marginatus.

Key words: COⅠ; 16S rRNA; Dermacentor nuttalli; Dermacentor marginatus; molecular identification

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