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Poster Session

GIS/GPS

Poster Session

P-28 - Assessing aerobic treatment units for mosquito habitat compatibility and pollutants

Wednesday, March 5, 2025
12:15 PM – 1:45 PM AST
Location: Hall A
Abstract:
There are 600+ miles of roadside ditches in St. Tammany Parish, LA that individual household sewage is discharged into. Estimates from prior years indicate ~60% of the aerobic treatment units in these onsite systems may be nonfunctioning, creating habitats attractive to ovipositing Culex quinquefasciatus. In collaboration with the parish’s Department of Environmental Services, we investigated whether onsite sewage system functionality has an impact on mosquito/mosquitofish presence, and its correlation to water quality parameters.


The Department of Environmental Services visited ~1000 properties in 2024 and determined the type of system installed, the functioning status, and where effluent was discharged. Water quality (pH, dissolved oxygen, dissolved solids, oxidative reduction potential) and the presence of mosquitoes/mosquitofish were observed and measured from ditches at each. The effect of covariates on fish presence, mosquito presence, and water quality will be compared upon completion in late 2024.