Attraction of stink bug (Hemiptera: Pentatomidae) nymphs to Euschistus aggregation pheromone in the field
Keywords:
Chinavia, peanut, pecan, peach, pheromone-baited trap, monitoring toolAbstract
Phytophagous stink bugs (Hemiptera: Pentatomidae) are primary pests in most fruit, vegetable, grain, and row crops worldwide. Pheromones have been identified and synthesized for several species of economically important stink bug pests. When yellow pyramid traps are baited with lures containing these pheromones, significantly more stink bug adults are captured in the field than without lures. Our specific objective for this study was to examine the attractiveness of the Euschistus aggregation pheromone, methyl (E,Z)-2,4-decadienoate (MDD), to stink bug nymphs by using yellow pyramid traps baited and not baited with MDD lures in peanut fields and alongside pecan and peach orchards. At orchard locations, captured nymphs were predominantly Euschistus servus (Say) followed by E. tristigmus (Say), E. ictericus (L.), and Thyanta custator custator (F.). In peanut, E. servus, E. tristigmus, and Chinavia hilaris (Say) nymphs were caught in traps. Nymphal capture of E. servus, E. tristigmus, and C. hilaris was significantly higher in traps with MDD lures than in non-baited traps demonstrating that these nymphs were attracted to the synthetic aggregation pheromone. Pyramid traps baited with aggregation pheromone can be used as monitoring tools to assess the presence and seasonal development of certain stink bug pest species on crop and non-crop host plants and perhaps to predict timing of dispersal into and/or out of a crop.
Resumen
Los chinches fitófagos (Hemiptera: Pentatomidae) son plagas principales en la mayoría de frutas, vegetales, granos y cultivos en hileras en todo el mundo. Se han identificado y sintetizado feromonas para varias especies de chinches plaga de importancia económica. Cuando se ceban trampas pirámide amarillas con señuelos que contienen estas feromonas, un número significativamente mayor de las chinches adultos son capturados en el campo que sin señuelos. Nuestro objetivo específico de este estudio fue examinar la capacidad de atracción de la feromona de agregación de Euschistus, metilo (E,Z) -2,4-decadienoato (MDD), a las ninfas de chinches hediondas utilizando trampas pirámide amarillas cebadas con el señuelo MDD y sin cebo en los campos de maní y al lado de pacana y melocotón. En los lugares de la huerta, las ninfas capturadas fueron predominantemente Euschistus servus (Say), seguido de E. tristigmus (Say), E. ictericus (L.) y Thyanta custator custator (F.). En cacahuete, ninfas de E. servus, E. tristigmus y Chinavia hilaris (Say) fueron capturadas en trampas. La captura de las ninfas de E. servus, E. tristigmus y C. hilaris fue significativamente mayor en las trampas con cebos de MDD que en trampas sin cebo lo que demuestra que estas ninfas fueron atraídas por la feromona de agregación sintética. La trampas de pirámide cebadas con la feromona de agregación se pueden utilizar como una herramienta de monitoreo para evaluar la presencia y el desarrollo estacional de ciertas especies de chinches plaga de las plantas de cultivo y no de cultivo y quizás para predecir el momento de la dispersión dentro y/o fuera de un cultivo.
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