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Operations, Response and Planning for Vector Control

Operations, Response and Planning for Vector Control

202 - Assessment of Common Carbon Dioxide Sources Used for Mosquito Trapping

Wednesday, March 5, 2025
4:50 PM – 5:00 PM AST
Location: 208 A
Abstract: Carbon dioxide (CO2) is a powerful attractant for host-seeking mosquitoes. Two common sources of carbon dioxide used for mosquito trapping are dry ice and compressed gas cylinders. When dry ice is placed in the field it is typically contained in an insulated container and allowed to sublime over the course of an evening whereas compressed cylinders are fitted with a regulator and set to release a steady flow of gas. These methods may at times be used interchangeably, but it is not clear whether these methods are equivalent. To assess the differences between dry ice and compressed gas cylinders, the carbon dioxide plume from each source was measured using a transect of CO2 sensors to compare their respective enhancements. The level of enhancement was observed over the release period to assess plume differences between dry ice and compressed gas cylinder release types. The impact of meteorological conditions throughout the mosquito trapping season was used to characterize the potential application for each CO2 source.