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<p>The <i>Aedes</i> (<i>Stegomyia</i>) <i>albopictus</i> (Skuse, 1895) (Diptera: Culicidae) is one of the major vectors for Dengue and Chikungunya. However, our study uncovered another mosquito species morphologically similar to <i>Ae. albopictus</i> but is genetically different. The male genitalia of this species possess minute differences in the IX tergum with <i>Ae. albopictus</i>. Nucleotide diversity and mean genetic distance analysis confirmed the genetic difference from <i>Ae. albopictus</i> and other <i>Aedes</i> species. However, this species has a significant degree of genetic similarity with the cryptic species of <i>Ae. albopictus</i> earlier reported from Vietnam and China. The time tree revealed the median divergence time of this species and <i>Ae. albopictus</i> species to be approximately 36.13&#xa0;million years ago. This study marks the discovery of an <i>Aedes nr. Albopictus</i> species resembling <i>Ae. albopictus</i> in India and third in the world, also reports the distinct morphological feature of the male genitalia for the first time. Our study indicates the sympatric behavior of this species as it shares the breeding habitat of <i>Ae. albopictus</i>. The absence of endosymbiont <i>Wolbachia</i> in this species raises the possibility of reproductive isolation with <i>Ae. albopictus</i> leading to sympatric speciation and increasing virus-carrying capability for this species, having significant implications for vector-borne disease control.</p>

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Detection of a sympatric cryptic species mimicking Aedes albopictus (Diptera: Culicidae) in dengue and Chikungunya endemic forest villages of Tripura, India, posing a daunting challenge for vector research

  • 期刊论文

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  • 发表日期：

    2025年4月24日

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  • Saurav Biswas,
  • Jadab Rajkonwar,
  • Sasmita Rani Jena,
  • Phiroz Gogoi,
  • Tulika Nirmolia,
  • Sathishkumar Vinayagam,
  • Gautam Hazarika,
  • Ashwarya Kumari Sihag,
  • Bhaskar Borah,
  • Rocky Pebam,
  • Harpreet Kaur,
  • Kalpana Baruah,
  • Kanwar Narain,
  • Sarala K Subbarao,
  • Dibya Ranjan Bhattacharyya,
  • Biswajyoti Borkakoty,
  • Ipsita Pal Bhowmick

摘要

The Aedes (Stegomyia) albopictus (Skuse, 1895) (Diptera: Culicidae) is one of the major vectors for Dengue and Chikungunya. However, our study uncovered another mosquito species morphologically similar to Ae. albopictus but is genetically different. The male genitalia of this species possess minute differences in the IX tergum with Ae. albopictus. Nucleotide diversity and mean genetic distance analysis confirmed the genetic difference from Ae. albopictus and other Aedes species. However, this species has a significant degree of genetic similarity with the cryptic species of Ae. albopictus earlier reported from Vietnam and China. The time tree revealed the median divergence time of this species and Ae. albopictus species to be approximately 36.13 million years ago. This study marks the discovery of an Aedes nr. Albopictus species resembling Ae. albopictus in India and third in the world, also reports the distinct morphological feature of the male genitalia for the first time. Our study indicates the sympatric behavior of this species as it shares the breeding habitat of Ae. albopictus. The absence of endosymbiont Wolbachia in this species raises the possibility of reproductive isolation with Ae. albopictus leading to sympatric speciation and increasing virus-carrying capability for this species, having significant implications for vector-borne disease control.