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Fig. 2 | Malaria Journal

Fig. 2

From: Lure, retain, and catch malaria mosquitoes. How heat and humidity improve odour-baited trap performance

Fig. 2

Experimental setup of the mosquito-tracking experiments, and analysis method for visualizing the three-dimensional flight dynamics in two-dimensional heat maps. a Schematic of the M-Tego with a removed slice to make the inside visible. The fan inside the inlet generates a circulating airflow by sucking air inside (blue arrows), mixing it with the odour blend and CO2, and then pushing air away from the trap (green arrows). Additionally, the trap can be filled with 1 L of warm water and heat can be generated by a Nichrome heating wire at the top of the inlet. b Top-down view of the experimental setting used for recording mosquito flight behaviour around the M-Tego. The filmed region is delimited by the angles of view of the 3 cameras (dashed grey lines). Flight tracks recorded during one trial are visualized in blue. Method for projecting three-dimensional rings around the trap (c) into two-dimensional surfaces (d). c The filmed volume was divided in three-dimensional rings of equal volume and centred around the trap axis of symmetry. d Each ring is projected into a cell in a two-dimensional parametric space comprising the vertical position (z-coordinate) and the radial distance to the trap’s axis of symmetry. In this way, heat maps of various metrics have been computed to visualize flight behaviour

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