Abstract
A simple method was used to compare the catches of seven different pairs of light-emitting moth-traps. Numbers of macro-moth individuals and species caught nightly by each member of a pair were recorded in comparisons that lasted between ten and 79 nights. A Robinson trap made significantly larger catches than a Skinner trap with an identical bulb, and a Robinson trap at ground level made significantly larger catches than an identical trap at a height of 90 cm. A 125 W MV bulb made significantly larger catches than an equivalent Wood's glass bulb or a multiple LED dome. No significant differences were found between a Robinson trap with a 125 W MV bulb and one with an 80 W MV bulb, or between two commercial brands of 125 W MV bulbs, or between two identical 125 W MV bulbs. This last comparison showed significant differences between the two sites used for these trials, apparently caused by a large flowering Buddleia at the more productive site. The findings suggest that catches may be maximised by using Robinson moth traps with 125 W MV bulbs, rather than the other traps or light sources tested here, and by placing them on the ground close to flowering Buddleia or other nectar-rich shrubs.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call