, Volume 48, Issue 3, pp 325-330
Date: 26 May 2013

Performance of polyethylene tubes as pheromone lures for the sorghum plant bug, Stenotus rubrovittatus (Hemiptera: Heteroptera: Miridae)

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The sorghum plant bug, Stenotus rubrovittatus (Matsumura) (Hemiptera: Heteroptera: Miridae), is a pest that infests rice in many regions of Japan. Three sex attractant pheromone components—hexyl butyrate, (E)-2-hexenyl butyrate, and (E)-4-oxo-2-hexenal—were identified in S. rubrovittatus. Because the longevity of a synthetic rubber septum dispenser is not sufficient for it to be an effective S. rubrovittatus pheromone lure, the performances of an alternative pheromone dispenser—a polyethylene tube—was examined. Hexyl butyrate and (E)-2-hexenyl butyrate are essential components of S. rubrovittatus male attraction, and the application of (E)-4-oxo-2-hexenal strongly enhanced the attractiveness of such “tube-type” lures. A 5:1:10 blend of hexyl butyrate, (E)-2-hexenyl butyrate, and (E)-4-oxo-2-hexenal was found to be the best blend ratio for male attraction in the tube-type lures. Tube-type lures attracted more males than rubber lures. Furthermore, the attractiveness of the tube-type lures was maintained for more than 28 days in the field. These results suggest that tube-type lures made of polyethylene plastic are suitable for monitoring S. rubrovittatus in fields.