A physical barrier reduces capture of Euschistus servus (Hemiptera: Pentatomidae) in pheromone-baited traps near peach trees
Keywords:
stink bug, attraction, dispersal, flight, Prunus persicaAbstract
Many species of stink bugs (Hemiptera: Pentatomidae) are pests of many crop plants and the polyphagous nature of these pests facilitates their movement across farmscapes. However, when feeding, their movement generally entails short distance moves within the height of the host plant. During 2014 and 2015, we used a tall barrier fence around peach trees to determine if this structure would deter adult Euschistus servus (Say) (Hemiptera: Pentatomidae) from being attracted to a pheromone-baited trap near the tree. Each year, cumulative data showed a significant decrease in capture of E. servus in traps enclosed with the barrier fence compared to traps near trees without the fence. Differences in treatments between sampling dates were not always significant. Overall, the barrier fence did reduce attraction of E. servus to pheromone-baited traps near peach trees. Future studies will assess the effect of physical barriers enclosing larger areas of an orchard on stink bug movement into peach, and if fruit injury is reduced.
Sumario
Muchas especies de chinches (Hemiptera: Pentatomidae) son plagas de muchos cultivos y la naturaleza polífaga de estas plagas facilita su movimiento por los campos agrícolas. Sin embargo, cuando se alimentan, su movimiento generalmente implica movimientos de corta distancia dentro de la altura de la planta hospedera. Durante el 2014 y 2015, utilizamos una cerca alta alrededor de árboles de durazno (melocoton) para determinar si esta estructura disuadiría a los adultos de Euschistus servus (Say) (Hemiptera: Pentatomidae) de ser atraídos por una trampa con cebo de feromonas cerca del árbol. Cada año, los datos acumulativos mostraron una disminución significativa en la captura de E. servus en las trampas encerradas adentro del cerco en comparación con las trampas a la par de los árboles sin cerco. Las diferencias en los tratamientos entre las fechas de muestreo no siempre fueron significativas. En general, el cerco redujo la atracción de E. servus a las trampas con cebo de feromonas cerca de los árboles de durazno. Los estudios futuros evaluarán el efecto de las barreras físicas que encierran áreas más grandes de un huerto sobre el movimiento de las chinches hediondas en el melocotón, y si se reduce el daño a las frutas.
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