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Accumulation of Anticoagulant Rodenticides in a Non-target Insectivore, the European hedgehog (Erinaceus europaeus)

Dowding, Claire V.; Shore, Richard F.; Worgan, Andrew; Baker, Philip J.; Harris, Stephen. 2010 Accumulation of Anticoagulant Rodenticides in a Non-target Insectivore, the European hedgehog (Erinaceus europaeus). Environmental Pollution, 158 (1). 161-166. 10.1016/j.envpol.2009.07.017

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Abstract/Summary

Studies on exposure of non-targets to anticoagulant rodenticides have largely focussed on predatory birds and mammals; insectivores have rarely been studied. We investigated the exposure of 120 European hedgehogs (Erinaceus europaeus) from throughout Britain to first- and second-generation anticoagulant rodenticides (FGARs and SGARs) using high performance liquid chromatography coupled with fluorescence detection (HPLC) and liquid-chromatography mass spectrometry (LCMS). The proportion of hedgehogs with liver SGAR concentrations detected by HPLC was 3-13% per compound, 23% overall. LCMS identified much higher prevalence for difenacoum and bromadiolone, mainly because of greater ability to detect low level contamination. The overall proportion of hedgehogs with LCMS-detected residues was 57.5% (SGARs alone) and 66.7% (FGARs and SGARs combined); 27 (22.5%) hedgehogs contained >1 rodenticide. Exposure of insectivores and predators to anticoagulant rodenticides appears to be similar. The greater sensitivity of LCMS suggests that hitherto exposure of non-targets is likely to have been under-estimated using HPLC techniques.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.envpol.2009.07.017
Programmes: CEH Topics & Objectives 2009 onwards > Biogeochemistry > BGC Topic 1 - Monitoring and Interpretation of Biogeochemical and Climate Changes > BGC - 1.1 - Monitor concentrations, fluxes, physico-chemical forms of current and emerging pollutants ...
CEH Sections: Shore
ISSN: 0269-7491
Additional Keywords: - and second-generation anticoagulant rodenticide, insectivore, brodifacoum, bromadiolone, difenacoum, flocoumafen, coumatetralyl, warfarin, non-target
NORA Subject Terms: Ecology and Environment
Date made live: 19 Apr 2010 09:49
URI: http://nora.nerc.ac.uk/id/eprint/7856

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