Resumen de Efficiency of capture of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) with mosquito killer light traps

Enio Nunez, Leandro Silva Barbosa, Fernanda Avelino Capistrano

• español

  Tuta absoluta (Meyrick) es una plaga cosmopolita que afecta hojas y frutos, causando daños a los cultivos. Se utilizan diversas técnicas de control para eliminar adultos y larvas; sin embargo, ninguno de ellos es completamente efectivo. Así, este estudio probó el uso de una trampa de luz con una lámpara ultravioleta y un dispositivo eléctrico para controlar T. absoluta en un invernadero de tomate (‘Grazianni’) ubicado en Paty do Alferes (Brasil), y registró el mejor período de captura. Para ello, se colocaron tres trampas para mosquitos modelo FIX dentro del invernadero (2.4 m de altura, 1.2 m de separación) durante un ciclo lunar. La captura se evaluó en los siguientes horarios: de 7:00 pm a 10:30 pm, de 10:30 pm a 02:00 am y de 02:00 a 05:30 am. Se recogieron un total de 6,886 especímenes. El intervalo de tiempo de 7:00-10:30 pm resultó en la mayor abundancia capturada (54.3%), similar a datos previos sobre el período de vuelo de T. absoluta. Estos resultados contribuyen al Manejo Integrado de Plagas del cultivo de tomate, una alternativa al uso exclusivo de métodos de control químico que no logran controlar eficientemente a la polilla del tomate.

• English

  Tuta absoluta (Meyrick) is a cosmopolitan pest that affects leaves and fruits, causing damage to crops. Various control techniques are used to eliminate adults and larvae; however, none of themis completely effective. Thus, this study tested the use of a light trap with an ultraviolet lamp and an electrical device to control T. absoluta in a tomato greenhouse (‘Grazianni’) located in Paty do Alferes (Brazil) and recorded the best capture period. For this, three FIX model mosquito traps were placed inside the greenhouse (2.4 m high, 1.2 m apart) during one lunar cycle. The catch was evaluated in the following time periods: from 7:00 pm to 10:30 pm, from 10:30 pm to 02:00 am, and from 02:00 to 05:30 am. A total of 6,886 specimens were collected. The time interval from 7:00-10:30 pm resulted in the highest abundance captured (54.3%), similar to previous data on the flight period of T. absoluta. These results contribute to the Integrated Pest Management of the tomato crop, an alternative to the exclusive use of chemical control methods which fail to efficiently control the tomato moth.