Identification of <i>Culex quinquefasciatus</i> and their hybrids in Tokyo Metropolis area

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  • 東京都（島しょ部を除く）で捕集されたネッタイイエカとその交雑種
  • トウキョウト(トウショブ オ ノゾク)デ ホシュウ サレタ ネッタイイエカ ト ソノ コウザツシュ

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Abstract

<p>Surveillance of vector mosquitoes has been conducted in Tokyo since 2004, and Aedes albopictus and Culex pipiens complex were identified as the dominant and widely-distributed species in Tokyo Metropolis. We performed PCR-based identification of the Cx. pipiens complex that we collected using CO2 baited-traps from 25 sites in Tokyo Metropolis area between 2018 and 2019. In 2019 mosquito larvae were collected from catch basins at 9 sites, reared to adult, and a part of the emerged Cx. pipiens comlex were identified by PCR-based method. As a result, Cx. quinquefasciatus and the hybrids between Cx. quinquefasciatus and Cx. pipiens complex (excluding Cx. quinquefasciatus) were identified in Tokyo Metropolis area for the first time. Continuous field survey is required whether Cx. quinquefasciatus have already been distributed or not in Tokyo Metropolis.</p>

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