A field-based method to estimate densities of Laricobius nigrinus (Coleoptera: Derodontidae), an introduced predator of hemlock woolly adelgid (Hemiptera: Adelgidae)

Authors

  • Gregory J. Wiggins University of Tennessee, Department of Entomology and Plant Pathology, Knoxville, Tennessee 37996, USA
  • Jerome F. Grant University of Tennessee, Department of Entomology and Plant Pathology, Knoxville, Tennessee 37996, USA
  • James R. Rhea USDA Forest Service, Forest Health Protection, Asheville, North Carolina 28804, USA
  • Abdul Hakeem Texas A&M AgriLife Research and Extension Center, Lubbock, Texas 79403, USA
  • Paris L. Lambdin University of Tennessee, Department of Entomology and Plant Pathology, Knoxville, Tennessee 37996, USA

Keywords:

Adelges tsugae, biological control, sampling, population estimation

Abstract

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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Author Biography

Gregory J. Wiggins, University of Tennessee, Department of Entomology and Plant Pathology, Knoxville, Tennessee 37996, USA

Department of Entomology and Plant Pathology

Research Assistant Professor

Downloads

Published

2016-12-31

Issue

Vol. 99, No. 4 (December 2016)

Section

Scientific Notes

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