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Changes in larval mosquito microbiota reveal non-target effects of insecticide treatments in hurricane-created habitats

    1. [1] Millersville University

      Millersville University

      Borough of Millersville, Estados Unidos

    2. [2] Michigan State University

      Michigan State University

      City of East Lansing, Estados Unidos

    3. [3] Hunterdon County Division of Health, Flemington, USA
  • Localización: Microbial ecology, ISSN-e 1432-184X, ISSN 0095-3628, Vol. 76, Nº. 3, 2018, págs. 719-728
  • Idioma: inglés
  • Texto completo no disponible (Saber más ...)
  • Resumen
    • Ephemeral aquatic habitats and their associated microbial communities (microbiomes) play important roles in the growth and development of numerous aquatic insects, including mosquitoes (Diptera). Biological control agents, such as Bacillus thuringiensis israelensis (Bti) or insect growth regulators (e.g., methoprene), are commonly used to control mosquitoes in these habitats. However, it is unknown how commonly used control compounds affect the mosquito internal microbiome and potentially alter their life history traits. The objectives of this study were threefold: characterize the internal microbiota of Aedes larvae (Culicidae) in ephemeral forested mosquito habitat using high-throughput amplicon based sequencing, assess how mosquito control treatments affect the internal microbial communities of larval mosquitoes, and determine if changes to the microbiome resulted from direct or indirect treatment effects. The larval microbiome varied in community composition and diversity with development stage and treatment, suggesting potential effects of control compounds on insect microbial ecology. While microbial community differences due to Bti treatment were a result of indirect effects on larval development, methoprene had significant impacts on bacterial and algal taxa that could not be explained by indirect treatment effects. These results provide new information on the interactions between pesticide treatments and insect microbial communities.


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