A field-based method to estimate densities of Laricobius nigrinus (Coleoptera: Derodontidae), an introduced predator of hemlock woolly adelgid (Hemiptera: Adelgidae)
Keywords:
Adelges tsugae, biological control, sampling, population estimationAbstract
Summary
This study investigated the use of emergence traps to assess densities of Laricobius nigrinus Fender (Coleoptera: Derodontidae), a predator of hemlock woolly adelgid (Hemiptera: Adelgidae), in an area of release and establishment. Results indicate that traps effectively collect emerging adults and allow systematic population estimates of L. nigrinus. The incorporation of this method in future monitoring efforts could enable population estimates across the release range of L. nigrinus, thereby enhancing the evaluation of establishment and long-term persistence of this predator.
Sumario
Este estudio investigó el uso de trampas de emergencia para evaluar la densidad de Laricobius nigrinus Fender (Coleoptera: Derodontidae), un depredador del pulgón de la tsuga (Hemiptera: Adelgidae), en un área de liberación y establecimiento. Los resultados indican que las trampas pueden capturar de manera efectiva a los adultos emergentes y permiten la estimación sistemática de la población de L. nigrinus. La incorporación de este método en los esfuerzos de vigilancia futuras podrían permitir a la estimación de la población en toda el área de liberación de L. nigrinus, mejorando de este modo la evaluación de establecimiento y persistencia a largo plazo de este depredador.
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