热带病与寄生虫学 ›› 2020, Vol. 18 ›› Issue (3): 145-150.

• 论著 • 上一篇    下一篇

广东省首次红带锥蝽分布调查与分析

廖宇煌1,卢文成1,毛强1,张启明1,何宇驰2,邓卓晖1∗   

  1. 1. 广东省疾病预防控制中心,广州 511430; 2. 湛江市疾病预防控制中心
  • 出版日期:2020-08-12 发布日期:2020-08-12
  • 通信作者: ∗通讯作者,邓卓晖,E-mail:zhdeng@ cdcp.org.cn
  • 作者简介:廖宇煌,男,硕士,医师,研究方向:寄生虫病预防控制。E-mail:lyhedu2010@ 126. com
  • 基金资助:
    广东省医学科学技术研究基金(B2020140)

Initial investigation and analysis on the distribution of Triatoma rubrofasciata in Guangdong Province

LIAO Yu-huang1 , LU Wen-cheng1 , MAO Qiang1 , ZHANG Qi-ming1 , HE Yu-chi2 , DENG Zhuo-hui1∗   

  1. 1. Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China; 2. Zhanjiang Center for Disease Control and Prevention
  • Online:2020-08-12 Published:2020-08-12
  • Contact: ∗Corresponding author, E-mail: zhdeng@cdcp.org.cn

摘要: 目的 了解红带锥蝽在广东省的地理分布、形态学特征和分子生物学特征。方法 选取粤西地区和珠江三角洲地区8 个地市共23 个县(市、区)开展调查,采取光诱法和人诱法进行搜捕。对捕获的锥蝽进行形态学和分子生物学鉴定,提取锥蝽基因组DNA,PCR 扩增细胞色素b(Cytb)基因,测序并进行序列比对。结果 调查共捕获红带锥蝽273 只,其中若虫36 只,成虫237 只,分布在广东省的8 个地市共23 个县(市、区)。经形态学特征和基因序列分析,采集到的锥蝽为红带锥蝽,与广西合浦红带锥蝽Cytb 基因(GenBank: MH368018. 1)序列同源性最高,为94. 91%。调查共收集到9 起锥蝽叮咬人的事件报告。结论 红带锥蝽广泛分布于广东省粤西地区和珠三角地区,居民被叮咬的事件时有发生,应加强对红带锥蝽的监测和控制。

关键词: 红带锥蝽, 调查, 地理分布, 形态特征, 广东省

Abstract: Objective To describe the geographical distribution of Triatoma rubrofasciata (T. rubrofasciata) in Guangdong Province, and to identify the morphological and molecular biological characteristics of this species. Methods The investigation was carried out in 23 counties of 8 cities in western Guangdong and Pearl River Delta. T. rubrofasciatae were collected by manual inspections and light trapping, and subjected to orphological identification using light microscopy. The DNA of T. rubrofasciata was extracted, and Cytb gene was amplified and sequenced with PCR and aligned with that in the GenBank. Results A total of 273 triatomines, 36 of which were nymphae and 237 were adults, were captured from 23 different counties in 8 cities in Guangdong. All collected bugs were identified as T. rubrofasciata by morphology. The phylogenetic tree based on the Cytb gene showed that the sequence of T. rubrofasciata from Guangdong was highly coincident with that of this species from Hepu County of Guangxi Province. The sequence homology was up to 94. 91% (GenBank:MH368018. 1). In addition, nine incidences of triatomines bite were observed during the investigation. Conclusion T.rubrofasciata is widely distributed in western areas and the Pearl River Delta of Guangdong Province, and the incidence of T.rubrofasciata bite often occur in residents in these areas, which suggests that enhanced surveillance and control of T.rubrofasciata are necessary.

Key words: Triatoma rubrofasciata, Investigation, Geographical distribution, Morphological characteristic, Guangdong Province

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