A new live trap for the acoustically orienting parasitoid fly Emblemasoma erro (Diptera: Sarcophagidae)
Keywords:
eavesdropping, bioacoustics, host finding, insect trap, OrmiaAbstract
Parasitoids that locate their hosts by eavesdropping on the acoustic signals of other insects can be collected in traps baited with audio signals that mimic the sounds of the parasitoid’s hosts. I describe a new acoustic trap designed to capture Emblemasoma erro Aldrich (Diptera: Sarcophagidae), an eavesdropping parasitoid of cicadas whose phonotactic behavior differs from that of the acoustic parasitoids targeted by previous trap designs. Specifically, unlike some other acoustic parasitoids, E. erro often remains at an artificial sound source only a few seconds, so the new trap features multiple, oblique side entrance funnels with large outer apertures that allow E. erro to rapidly access the trap’s interior. The trap also has a modular design that allows the broadcast loudspeaker to be used independently of the trapping apparatus, and the trap is lightweight and easily transported in the field.
Sumario
Los parasitoides que localizan sus hospederos por escuchar las señales acústicas de otros insectos pueden recogerse en trampas cebadas con señales de audio que imitan los sonidos de los hospederos del parasitoide. Describo una nueva trampa acústica diseñada para capturar Emblemasoma erro Aldrich (Diptera: Sarcophagidae), un parasitoide de las cigarras cuyo comportamiento fonotáctica difiere de la de los parasitoides acústicos que fueron el enfoque de los diseños de trampas anteriores. Específicamente, a diferencia de algunos otros parasitoides acústicas, E. erro a menudo se detiene en una fuente de sonido artificial sólo por unos pocos segundos, por lo que las nuevas características de la trampa presenta embudos oblicuos múltiples a la entrada lateral con grandes aberturas exteriores que permiten a E. erro acceder rápidamente el interior de la trampa. La trampa también tiene un diseño modular que permite al parlante ser utilizado independientemente del aparato de captura, y la trampa es de poco peso y es fácil de transportar en el campo.
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