Molecular identification and phylogenetic analysis of 44 species of fleas in Qinghai Province, western China based on mtDNA COI gene sequence
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ACTA ENTOMOLOGICA SINICA  2018, Vol. 61 Issue (4): 488-497    DOI: 10.16380/j.kcxb.2018.04.011
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Molecular identification and phylogenetic analysis of 44 species of fleas in Qinghai Province, western China based on mtDNA COI gene sequence
MA Ying1, LI Hai-Long1, HE Jian1, ZHAO Yan-Mei1, YANG Han-Qing1, LU Liang2,*, LIU Qi-Yong2
(1. Qinghai Institute for Endemic Disease Prevention and Control, Xining 811602, China; 2. National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102200, China)
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Abstract 【Aim】 DNA barcoding method was used to identify flea samples from Qinghai Province, western China in order to make up the deficiency of the traditional morphological classification method in this study. 【Methods】 The partial fragments (about 600 bp) of the mtDNA COI gene of 182 flea individuals that belong to 3 superfamilies, 6 families, 22 genera and 44 species were amplified by PCR, sequenced and aligned. The intra-and inter-species genetic distances were calculated with K2P model, and a phylogenetic tree was constructed with the neighbor-joining (NJ) method. 【Results】 Totally 182 COI gene sequences (GenBank accession no.: MG138154-MG138335) were sequenced successfully. The inter-species genetic distance (4%-12%) was significantly greater than the intra-species genetic distance (0.01%-2.90%). The NJ tree obtained showed that samples of the same species formed monophyletic groups with high support value, and inter-species branches were clear. 【Conclusion】 The results confirm that COI gene can be used in molecular identification of fleas.
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MA Ying
Li-Hai-Long
HE Jian
ZHAO Yan-Mei
YANG Han-Qing
LU Liang
LIU Qi-Yong
Key wordsCOI gene   flea   DNA barcoding   molecular identification   phylogeny   Qinghai     
Cite this article:   
MA Ying, Li-Hai-Long,HE Jian et al. Molecular identification and phylogenetic analysis of 44 species of fleas in Qinghai Province, western China based on mtDNA COI gene sequence[J]. ACTA ENTOMOLOGICA SINICA, 2018, 61(4): 488-497.
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http://www.insect.org.cn/EN/10.16380/j.kcxb.2018.04.011      or     http://www.insect.org.cn/EN/Y2018/V61/I4/488
 
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