Baltimore Ecosystem Study Institute of Ecosystem Studies

2014 BES Annual Meeting Presentation and Poster Abstracts

Microclimate impacts on oviposition and larval development of mosquitoes in Baltimore City and County
Persichetti, Jason
Co-Authors: Shannon LaDeau and Heather Goodman

Abstract: Persistent standing water is required for the development of immature mosquitoes. As such, microclimate factors including temperature and precipitation greatly influence the suitability of potential aquatic habitats. Additionally, the proportion of eggs hatching, rate of larval development and proportion of pupae surviving to adults are all influenced by water temperature. In general, rates of survival and development increase with increasing temperatures within a suitable range, with sharp declines at temperatures that are too high. Ovitraps were deployed in 2011, 2012, and 2013 along an urban to rural gradient from Baltimore City to Baltimore County along with iButton temperature loggers that collect hourly temperature data. At urban sites, temperature was elevated compared to more rural sites. The effects of temperature on the species composition and abundance of larvae in ovitraps in relation to temperature was examined with an increased production of pupae at urban sites noted. There was considerable variation in oviposition and differences in peak populations of mosquitoes.