Temperature-activity relationships in Meligethes aeneus: implications for pest management
Article first published online: 26 AUG 2014
© 2014 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Pest Management Science
Volume 71, Issue 3, pages 459–466, March 2015
How to Cite
Ferguson, A. W., Nevard, L. M., Clark, S. J. and Cook, S. M. (2015), Temperature-activity relationships in Meligethes aeneus: implications for pest management. Pest. Manag. Sci., 71: 459–466. doi: 10.1002/ps.3860
- Issue published online: 10 FEB 2015
- Article first published online: 26 AUG 2014
- Accepted manuscript online: 23 JUL 2014 03:54AM EST
- Manuscript Accepted: 15 JUL 2014
- Manuscript Revised: 19 JUN 2014
- Manuscript Received: 10 FEB 2014
- Defra Sustainable Arable LINK programme. Grant Number: LK09108
- UK Department for Environment, Food and Rural Affairs
- UK Health and Safety Executive
- HGCA division of the UK Agriculture and Horticulture Development Board
- Lawes Agricultural Trust Summer Bursary
- UK Biotechnology and Biological Sciences Research Council (BBSRC)
- flight threshold;
- Brassica napus;
- decision support;
- risk assessment
Pollen beetle (Meligethes aeneus F.) management in oilseed rape (Brassica napus L.) has become an urgent issue in the light of insecticide resistance. Risk prediction advice has relied upon flight temperature thresholds, while risk assessment uses simple economic thresholds. However, there is variation in the reported temperature of migration, and economic thresholds vary widely across Europe, probably owing to climatic factors interacting with beetle activity and plant compensation for damage. The effect of temperature on flight, feeding and oviposition activity of M. aeneus was examined in controlled conditions.
Escape from a release vial was taken as evidence of flight and was supported by video observations. The propensity to fly followed a sigmoid temperature–response curve between 6 and 23 °C; the 10, 25 and 50% flight temperature thresholds were 12.0–12.5 °C, 13.6–14.2 °C and 15.5–16.2 °C, respectively. Thresholds were slightly higher in the second of two flight bioassays, suggesting an effect of beetle age. Strong positive relationships were found between temperature (6–20 °C) and the rates of feeding and oviposition on flower buds of oilseed rape.
These temperature relationships could be used to improve M. aeneus migration risk assessment, refine weather-based decision support systems and modulate damage thresholds according to rates of bud damage. © 2014 Society of Chemical Industry