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RECENT DEVELOPMENTS IN THE USE OF ACOUSTIC SENSORS AND SIGNAL PROCESSING TOOLS TO TARGET EARLY INFESTATIONS OF RED PALM WEEVIL IN AGRICULTURAL ENVIRONMENTS

Richard W. Mankin
The Florida Entomologist
Vol. 94, No. 4 (December, 2011), pp. 761-765
Stable URL: http://www.jstor.org/stable/23065826
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
RECENT DEVELOPMENTS IN THE USE OF ACOUSTIC SENSORS AND SIGNAL PROCESSING TOOLS TO TARGET EARLY INFESTATIONS OF RED PALM WEEVIL IN AGRICULTURAL ENVIRONMENTS
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Abstract

Much of the damage caused by red palm weevil larvae to date palms, ornamental palms, and palm offshoots could be mitigated by early detection and treatment of infestations. Acoustic technology has potential to enable early detection, but the short, high-frequency sound impulses produced by red palm weevil larvae can be difficult to distinguish from certain similar sounds produced by other insects or small animals, or by wind-induced tapping noises. Considerable research has been conducted to develop instruments and signal processing software that selectively amplify insect-produced sounds and identify signal features that distinguish sounds produced by a particular target insect from those produced by other causes. Progress has been made in identifying unique spectral and temporal patterns in the sounds produced by larvae during movement and feeding activities. This report describes some of the new instrumentation and signal analyses available for early, reliable detection of red palm weevil larvae in groves and greenhouses. Gran parte de los daños causados por las larvas del gorgojo rojo de las palmas a las palmeras dátiles, palmas ornamentales y los retoños de palmas podrían ser mitigados mediante la detección temprana y el tratamiento de las infestaciones. La tecnología acústica tiene el potencial de permitir la detección temprana, pero los impulsos cortos de alta frecuencia de sonido producidas por las larvas del gorgojo rojo de las palmas pueden ser difíciles de distinguir de ciertos sonidos similares producidos por otros insectos o animales pequeños o los toques de sonido producidos por el viento. Se han realizado muchas investigaciones para desarrollar instrumentos y software (programas de computadora) de procesamiento de señales que amplifican selectivamente los sonidos producidos por insectos e identificar las características de las señales que distingue a los sonidos producidos por el insecto clave en particular de los producidos por otras causas. Se ha avanzado en la identificación de patrones espectrales y temporales únicos de los sonidos producidos por las larvas durante las actividades de movimiento y la alimentación. Este informe describe algunos de los nuevos instrumentos y análisis de señales para la detección temprana y fiable de las larvas del gorgojo rojo de las palmas en las plantaciones e invernaderos.

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