Comparison of baiting strategies in common vole management

Author:

Jacoblinnert Kyra12ORCID,Goedecker Caspar3,Halle Stefan3,Schenke Detlef4,Imholt Christian1,Jacob Jens1

Affiliation:

1. Julius Kuehn‐Institute, Federal Research Institute for Cultivated Plants Institute for Epidemiology and Pathogen Diagnostics – Rodent Research Muenster Germany

2. Department of Behavioural Biology University of Osnabrueck Osnabrueck Germany

3. Friedrich Schiller University Jena Institute of Ecology and Evolution Jena Germany

4. Julius Kuehn‐Institute, Federal Research Centre for Cultivated Plants, Institute for Ecological Chemistry Plant Analysis and Stored Product Protection Berlin Germany

Abstract

AbstractBACKGROUNDWorldwide, pest rodents can cause extensive damage to agriculture, forestry, food storage, and infrastructure and pose a risk to public health and livestock due to the spread of zoonotic pathogens. In Europe, the most common pest rodent species is the common vole (Microtus arvalis). Management during periodic outbreaks largely relies on rodenticidal bait with zinc phosphide. Efficient baiting with rodenticides or possibly anti‐fertility products in the future require baiting methods that allow a sufficient proportion of the population to consume an effective dose of bait. We used a bait with the quantitative marker ethyl‐iophenoxic acid (Et‐IPA) to evaluate baiting strategies in enclosure experiments. This wheat‐based bait with Et‐IPA was placed in bait boxes or directly into the tunnel system entrances in different seasons and common vole abundances. Voles were live‐trapped, individually marked and blood samples were collected to relate Et‐IPA blood residues to bait uptake.RESULTSThe percentage of animals consuming bait was not heavily affected by the baiting strategy but voles had higher Et‐IPA blood residues if tunnel baiting was used in autumn and if bait boxes were used in winter. Non‐reproductive as well as lighter animals tended to have higher Et‐IPA blood residues than reproductive individuals, whereas sex had no effect. Population density had a negative effect on the probability of residues present as well as on Et‐IPA blood concentration.CONCLUSIONThe results of this study might help to improve baiting techniques to manage overabundant rodent pest species regardless of the compounds to be delivered. © 2024 Julius Kühn‐Institut. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Publisher

Wiley

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