Figure 2

Experimental set-up for direct observation tests. A. Set-up used to assess catch rates at horizontal and vertical sticky-net surfaces - only the horizontal experimental set-up is shown. The dashed blue line represents the clear Perspex screen (200 × 150 cm) separating the observer from the experimental set-up. B. Detail of modification used to investigate potential non-contact repellency of the sticky-net treatment. The distance between the two net surfaces was 2 cm. In control trials, two layers of untreated net were used.