Eficacia de diferentes diodos emisores de luz (LEDs) unidos a trampas adhesivas amarillas para la captura de la mosca blanca Trialeurodes vaporariorum

Abstract

RESUMENTeniendo en cuenta que algunos adultos de insectos muestran preferencia a ciertas longitudes de onda, se ha considerado este comportamiento para desarrollar herramientas de monitoreo y estrategias de control de insectos plaga. Como ejemplo de ello, las tarjetas adhesivas amarillas han sido ampliamente usadas para monitorear población de moscas blancas a campo como invernadero. Este estudio tuvo como objetivo evaluar la efectividad de trampas adhesivas amarillas provistas con luces emitidas por diodos (LEDs) para el trampeo de adultos moscas blancas Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae). Los ensayos se llevaron a cabo en la EEA INTA Concordia en condiciones de umbráculo, donde se ubicaron jaulas de cría con plantas de tabaco, Solanum tabacum (L.) y poroto, Phaseolus vulgaris (L.) desde Junio hasta Julio del 2013. Las trampas adhesivas amarillas tuvieron una superficie de 64cm 2 provistas con (LEDs) de diferentes longitudes de onda promedio (525 nm verde y 380 nm UV) y sin LED como testigo. Los ensayos mostraron que los adultos de mosca blanca fueron significativamente (α >0.05) más atraídos por las trampas equipadas con LED 525 nm verde (134 ± 7.4 adultos/tarjeta) comparadas con trampas equipadas con LED 380 nm UV (105 ± 7.4 adultos/tarjeta) y trampas sin LED (85.17 ± 7.4 adultos/tarjeta). Estos resultados muestran que los adultos de T. vaporariorum son atraídos a trampas dotadas con LED verde, las cuales podrían tener un promisorio uso en invernadero como detección, monitoreo y control de mosca blanca. Castresana and puhl -Light-emitting diodes (LEDs) for whitefly capture ABSTRACTSince adult insects respond to particular wavelengths, some investigations have proposed to use such behavior as potential target for novel monitoring and pest control tools.Yellow sticky cards have been commonly used for monitoring whiteflies population in open-fields as well as in greenhouses. However, the attractiveness depends on various factors such as the reflected intensity (brightness) and the hues of yellow color (wavelength) of the trap surface, which is often influenced by environmental conditions and may sometimes affect the capture of white flies.There fore, the use of light emitting diodes (LEDs) can be a significant complementary tool to strengthen attractiveness and the selectivity of these cards. This research was carried out to investigate the efficacy of the yellow sticky traps equipped with LEDs in the capturing mechanism of adult whiteflies Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae and were supplemented with LED sof different wavelengths, namely green LEDs (525 nm), UV (380 nm) and without LED sas control treatment. The trials showed that adults of T. vaporariorum on average preferred (α>0,05) traps equipped with green LEDs (525nm),which could have a promising use in greenhouses for the identification, monitoring and control of whiteflies.

A Greenhouse Test to Explore and Evaluate Light-Emitting Diode (LED) Insect Traps in the Monitoring and Control of Trialeurodes vaporariorum

“…However, in our field test, the yellow sticky card equipped with UV LED lights caught the least number of greenhouse whiteflies in a 24 h observation period. This weak attractiveness of the UV LED light was consistent with the results of some cage tests [14,16]. Yellow sticky cards alone were more attractive to greenhouse whiteflies than those supplemented with UV LED lights, both during the day and at night time.…”

“…Some studies have shown that LED lights served as attractants [11][12][13][14][15] and increased the trapping efficacy of many insects, including greenhouse whiteflies, tobacco whiteflies, sweet potato whiteflies, thrips, and fungus gnats. However, most studies have been laboratory or confined cage studies, and field studies are still quite limited [16][17][18][19]. In this study, we used the greenhouse whitefly Trialeurodes vaporariorum (Westwood), an important pest worldwide, as a target insect to explore and evaluate the application potential of LED lights for the mass trapping of small diurnal insects in a greenhouse field test.…”

“…"Migratory behavior" was elicited the most by ultraviolet (UV) light [25,[27][28][29]. UV light was attractive to the greenhouse whitefly, especially in the dark, but it was less attractive than the green-yellow spectrum [8,13,16]. In a choice cage test, adult greenhouse whiteflies showed a preference for the UV-green LED complex over the green LED alone [14].…”

“…In a choice cage test, adult greenhouse whiteflies showed a preference for the UV-green LED complex over the green LED alone [14]. Most previous cage studies of LED traps used green and UV LEDs in their tests [13,14,16,17,19]. The most sensitive behavioral spectrum is not always the most sensitive light receptor spectrum [25]; it is the integration of visual stimuli inputs in the central nervous system that results in the peculiar phototactic response exhibited by the species [8].…”