Light-emitting Diodes (LED) as Luminous Lure for Adult Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Abstract

The capture of insects through luminous sources can represent another option for integrated pest management (IPM). The purpose of this study was to verify the attractiveness of different-colored Light-Emitting Diodes (LED) on adult Spodoptera frugiperda. The research was conducted at the Entomology Laboratory of Plant Breeding and Environmental Sciences Department, Federal University of Paraíba’s Agricultural Sciences Center – CCA/UFPB, Areia-PB. An environment composed of two plastic containers connected by a PVC pipe was assembled for this study. Adult subjects of S. frugiperda were inserted into one of these containers, and the opposite container was used to house the lamp. Ultra LED lamps were used as light source. Different colors of light viz., yellow, green, white, red, and blue, each one of them with specific wavelengths, illuminance, and exposure period were used. The study revealed that the attractiveness rate for adult subjects of S. frugiperda varied by the LED lamp colors and the exposure period. The green-colored lamp showed a greater attractiveness rate (31.22 and 49.91% at the times of 24 and 48 hours, respectively), which was followed by the white- and yellow-colored lamps. The red (25.75%) and blue (7.4%) colors, with an exposure period of 48 hours, showed the lower rates. The attractiveness of S. frugiperda gradually increased over the exposure period for the treatments with the green, yellow, white, and red colored LEDs. The green LED lamp, followed by the yellow and white LED, was proved to be the most attractive ones for adults of this species.