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<p><i>Aedes aegypti</i> and <i>Ae. albopictus</i> are the main dengue vectors in tropical and subtropical areas of the world. In Argentina, <i>Ae. aegypti</i> has a wide distribution in subtropical and temperate regions, whereas <i>Ae. albopictus</i> is restricted to subtropical ones. To explore the hypothesis that <i>Ae. albopictus</i> has a more restricted distribution than <i>Ae. aegypti</i> in the study area, we proposed to analyze the spatial and temporal distribution of both species in Eldorado, Misiones, and Argentina, and the influence of climatic variables and habitat characteristics on their abundances. Larvae and pupae were collected monthly (May 2016 to April 2018) in repair shops, cemeteries, households, and a natural park, collecting 20,057 larvae/pupae of <i>Ae. aegypti</i> and 3,150 of <i>Ae. albopictus</i>. Both species were detected throughout the sampling period and showed significant temporal variation in abundance. <i>Aedes aegypti</i> exhibited higher abundances in households, tire repair shops, and cemeteries, whereas <i>Ae</i>. <i>albopictus</i> was more abundant in households and cemeteries. Habitat categories (presence of <i>Aedes albopictus</i> only, <i>Ae</i>. <i>aegypti</i> only, or both species) differed significantly among larval habitat types and environments. The abundance of <i>Ae</i>. <i>aegypti</i> was significantly associated with larval habitat type, presence of organic matter, container size, and minimum temperature with an 8-week time lag. In contrast, <i>Ae</i>. <i>albopictus</i> abundance was significantly influenced by month, larval habitat type, water color, and maximum relative humidity with an 8-week time lag, with additional marginal effects of minimum temperature and precipitation.</p>

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Climatic and Microenvironmental Variables Associated with the Abundance of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in a Subtropical Region of Argentina

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Ana Carolina Alonso,
  • María Victoria Micieli,
  • Carla Noel Alvarez,
  • Faraone Janinna,
  • Liliana Galindo,
  • Javier Orlando Gimenez,
  • Aiara Belén Yensen Junco,
  • Marina Stein

摘要

Aedes aegypti and Ae. albopictus are the main dengue vectors in tropical and subtropical areas of the world. In Argentina, Ae. aegypti has a wide distribution in subtropical and temperate regions, whereas Ae. albopictus is restricted to subtropical ones. To explore the hypothesis that Ae. albopictus has a more restricted distribution than Ae. aegypti in the study area, we proposed to analyze the spatial and temporal distribution of both species in Eldorado, Misiones, and Argentina, and the influence of climatic variables and habitat characteristics on their abundances. Larvae and pupae were collected monthly (May 2016 to April 2018) in repair shops, cemeteries, households, and a natural park, collecting 20,057 larvae/pupae of Ae. aegypti and 3,150 of Ae. albopictus. Both species were detected throughout the sampling period and showed significant temporal variation in abundance. Aedes aegypti exhibited higher abundances in households, tire repair shops, and cemeteries, whereas Ae. albopictus was more abundant in households and cemeteries. Habitat categories (presence of Aedes albopictus only, Ae. aegypti only, or both species) differed significantly among larval habitat types and environments. The abundance of Ae. aegypti was significantly associated with larval habitat type, presence of organic matter, container size, and minimum temperature with an 8-week time lag. In contrast, Ae. albopictus abundance was significantly influenced by month, larval habitat type, water color, and maximum relative humidity with an 8-week time lag, with additional marginal effects of minimum temperature and precipitation.