Dynamics of pollen beetle (Brassicogethes aeneus) immigration and colonization of oilseed rape (Brassica napus) in Europe

A - Papers appearing in refereed journals

Bick, E., Sigsgaard, L., Torrance, M. T., Helmreich, S., Still, L., Beck, B., Rashid, R. E., Lemmich, J., Nikolajsen, T. and Cook, S. M. 2024. Dynamics of pollen beetle (Brassicogethes aeneus) immigration and colonization of oilseed rape (Brassica napus) in Europe. Pest Management Science. 80 (5), pp. 2306-2313. https://doi.org/10.1002/ps.7538

AuthorsBick, E., Sigsgaard, L., Torrance, M. T., Helmreich, S., Still, L., Beck, B., Rashid, R. E., Lemmich, J., Nikolajsen, T. and Cook, S. M.
Abstract

BACKGROUND
Understanding the dynamics of pest immigration into an agroecosystem enables effective and timely management strategies. The pollen beetle (Brassicogethes aeneus) is a primary pest of the inflorescence stages of oilseed rape (Brassica napus). This study investigated the spatial and temporal dynamics of pollen beetle immigration into oilseed rape fields in Denmark and the UK using multiple methods, including optical sensors.

RESULTS
In all fields, pollen beetles were found to be aggregated and beetle density was related to plant growth stage, with more beetles occurring on plants after the budding stage than before inflorescence development. Optical sensors were the most efficient monitoring method, recording pollen beetles 2 and 4 days ahead of water traps and counts from plant scouting, respectively.

CONCLUSION
Optical sensors are a promising tool for early warning of insect pest immigration. The aggregation pattern of pollen beetles post immigration could be used to precisely target control in oilseed rape crops. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

KeywordsMonitoring ; Optical sensors; Meligethes aeneus; Rapeseed; Pesticide reduction; Sustainable agriculture; Integrated pest management; Precision agriculture
Year of Publication2024
JournalPest Management Science
Journal citation80 (5), pp. 2306-2313
Digital Object Identifier (DOI)https://doi.org/10.1002/ps.7538
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
Publisher's version
Supplemental file
Output statusPublished
Publication dates
Online21 Jun 2023
Publication process dates
Accepted14 May 2023
PublisherWiley
ISSN1526-498X

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