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ViewAttendees 6

Student 10-Minute Paper

Medical, Urban, and Veterinary Entomology

Student Competition

Student

Grad Competition MUVE: Vector Control and Surveillance

Environmental factors and competition influence invasive Aedes prevalance and larval habitat choice in urbanized landscapes

Monday, November 6, 2023
8:36 AM – 8:48 AM ET
Location: Gaylord National Resort & Convention Center, Potomac 1-2
In-Person Student Competition

    Presenting Author(s)

  • BN

    Benjamin L. Nyman (he/him/his)

    Graduate Student
    University of California
    Riverside, California

    • Co-Author(s)

  • AG

    Alec C. Gerry

    Professor of Entomology / Extension Specialist
    University of California
    Riverside, California

  • KA

    Kurt Anderson

    Associate Professor
    University of California
    Riverside, California

The global disease burden of mosquito vectored pathogens is projected to expand under current climate and landuse change conditions, creating a growing need for research into the interactions between these mosquitoes and the environments they occupy. In southern California, Aedes aegypti, Aedes albopictus, and recently , have all established overlapping populations, creating nuisance burdens and potential for local transmission of diseases like dengue and zika. As these species all compete for similar aquatic larval habitats and adult resources, their distributions may be influenced by not only environmental factors, but competition, or an interaction of both. To examine these interactions, mosquitoes were surveyed in a control district where Ae. aegypti and Ae. albopictus commonly co-occur at varying rates across a diverse urban-surburban landscape. Not only were adults captured in baited BG-Sentinel traps, but water holding bromeliads were also left out at several sites to collect data on oviposition in small phytotelmata. Each week from August through October traps were set out and collected and plants decanted for larvae and refilled in cooperation with the San Gabriel Valley MVCD. This collection data was then modeled against environmental data including climate, land use, and demographics. Important metrics examined were the influence of factors on overall Aedes prevalence, Aedes species distribution, and correlation between adult catch and larvae. Data and covariates were also used to generate a joint species distribution model incorporating the environmental variables with competition. Greater understanding of these relationships is vital to accurately predicting current and future disease risk.