Close‐range behaviour of male pea moths, Cydia nigricana, responding to sex pheromone re‐released via the substrate
1988
Perry, J. N. | Wall, C. | Clark, Suzanne J.
The close‐range orientation behaviour of male pea moths, Cydia nigricana (F.) (Lepidoptera: Tortricidae), to a substrate contaminated with synthetic sex pheromone was studied in the field. The substrate was a sheet of polypropylene ‘grass’ on a 1 m diam arena, on the upwind edge of which a pheromone trap had been placed previously for 1 h. After removal of the trap, moths continued to be attracted to the arena and to the vacated trap position. Video‐recorded tracks showed that the moths behaved anemotactically whilst on the arena. When the arena was revolved so that the vacated trap position was on the downwind edge, moths continued to fly upwind on the arena, even though they were flying away from the original trap position and down a concentration gradient.
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