Journal of Pest Science

, Volume 86, Issue 1, pp 115–123

Categorization and numerical assessment of wireworm mobility over time following exposure to bifenthrin

Original Paper

DOI: 10.1007/s10340-011-0381-2

Cite this article as:
van Herk, W.G. & Vernon, R.S. J Pest Sci (2013) 86: 115. doi:10.1007/s10340-011-0381-2


We discuss the effect of the pyrethroid insecticide bifenthrin incorporated into soil at 100, 200, and 300 g AI/ha on late-instar larvae of the dusky wireworm, Agriotes obscurus (Coleoptera: Elateridae), and present a method of assessing wireworm health and mobility over time. Wireworms became moribund within 1 h of placement in soil amended with bifenthrin at all rates. After 2 weeks of morbidity in amended soils, wireworms recovered within 7 days of being placed in clean soil. A considerable proportion (0.13–0.93) of wireworms placed in amended soil moved to the soil surface and remained there for 2 weeks or more in a moribund state; wireworms transferred to clean soil no longer moved to the soil surface. Eight distinct mobility categories were observed and are described, and a new method for assessing wireworm health and mobility over time is discussed.


Agriotes obscurusInsect behaviorInsecticideMorbidityPyrethroidPest control

Copyright information

© Her Majesty the Queen in Right of Canada 2011

Authors and Affiliations

  1. 1.Pacific Agri-Food Research CentreAgriculture and Agri-Food CanadaAgassizCanada