Efficacy of new commercial traps and the lure CeraTrap® against Anastrepha obliqua (Diptera: Tephritidae)
Keywords:
Anastrepha obliqua, CeraTrap, McPhail trap, mass trapping, monitoringAbstract
Traps, lures, and trap/lure combinations were tested against the West Indian fruit fly, Anastrepha obliqua Macquart (Diptera: Tephritidae). The study aimed to evaluate the efficiency of possible trap/lure substitutes for the traditional McPhail glass trap baited with hydrolyzed protein, which is the trap/lure combination approved for monitoring this pest in Mexico. CeraTrap®, an enzymatically hydrolyzed protein, caught as many or more A. obliqua flies as McPhail traps baited with the chemically hydrolyzed protein, Captor®, or with the dry lure, Biolure. When fly densities were high, the average capture was 3 times greater for CeraTrap than for the other lures. Sex ratios were generally female-biased and similar among all lures tested. The CeraTrap lure was not replaced during the course of the experiment and good attraction and preservation of captured specimens were observed after one month of use. CeraTrap attracted more lacewings (Neuroptera: Chrysopidae) than other lures. When commercial traps baited with liquid lures were evaluated under cage conditions, traps with lateral holes, such as Maxitrap and Tephri trap, captured more flies than traps with open bottom access. New commercial traps baited with CeraTrap were significantly more efficient than McPhail traps baited with hydrolyzed protein in hog plum (Spondias mombin L.; Sapindales: Anacardiaceae) but similar in mango (Mangifera indica L.; Sapindales: Anacardiaceae). We conclude that the CeraTrap lure is an efficient lure when used in combination with other inexpensive simple traps for monitoring this pest, including during periods of low population density.
Trampas, cebos y diferentes combinaciones de trampas y cebos fueron evaluados con la mosca de las Indias Occidentales, Anastrepha obliqua Macquart (Diptera: Tephritidae), para determinar un posible sustituto de la tradicional trampa McPhail de vidrio cebada con proteína hidrolizada, la cual está incluida como la combinación trampa/cebo oficial para el monitoreo de esta mosca en México. CeraTrap®, un cebo de proteínas de hidrólisis enzimática, capturó tantas moscas o más moscas de A. obliqua que trampas McPhail cebadas con la proteína de hidrólisis química Captor® o el cebo seco Biolure®. Cuando las poblaciones de mosca fueron altas, se observó un promedio de capturas tres veces superior para CeraTrap que con los otros cebos. El ratio de sexos estuvo inclinado generalmente hacia hembras y fue similar entre los cebos evaluados. CeraTrap no fue reemplazado durante el transcurso del experimento y mantuvo buena atracción y preservación de los especímenes después de un mes de uso. CeraTrap atrajo más crisopas (Neuroptera: Chrysopidae) que otros cebos. Cuando trampas comerciales cebadas con cebos líquidos fueron evaluadas en condiciones de jaula, trampas con orificios laterales como la trampa Maxitrap y Tephritrap capturaron más moscas que trampas con acceso invaginado. Nuevas combinaciones de trampas con CeraTrap resultaron ser significativamente más efectivas que la trampa McPhail con proteína hidrolizada en jobo (Spondias mombin L.; Sapindales: Anacardiaceae) pero similares en mango (Mangifera indica L.; Sapindales: Anacardiaceae). Concluimos que CeraTrap tiene el potencial de uso para el monitoreo de esta plaga, incluso en periodos de bajas densidades poblacionales.
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