Intraspecific and geographical variation in rodenticide exposure among common kestrels in Tenerife (Canary Islands)

Carrillo-Hidalgo, José; Martín-Cruz, Beatriz; Henríquez-Hernández, Luis Alberto; Rial-Berriel, Cristian; Acosta-Dacal, Andrea; Zumbado-Peña, Manuel; Luzardo, Octavio P.

doi:10.1016/j.scitotenv.2023.168551

Cited by 3 publications

(2 citation statements)

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“…An increase in brodifacoum in raptors was also observed in the Canary Islands (Spain), despite the reclassification of anticoagulant rodenticides applied from the first of March 2018 (Commission Regulation (EU) 2016/1179), restricting the accessibility of rodenticide baits with >30 ppm of anticoagulant for amateur use. 63 Similarly, the measures on the use of SGARs only in bait box since 2013 did not reduce exposure of raptors to SGARs in France. 64 In the United States, although the accessibility of SGARs to nonprofessional applicators is not allowed since the middle of the 2010s, the prevalence of brodifacoum in red-tailed hawks remained almost 100%, and the others increased.…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

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Significant Turning Point: Common Buzzard (Buteo buteo) Exposure to Second-Generation Anticoagulant Rodenticides in the United Kingdom

Ozaki,

Movalli,

Cincinelli

et al. 2024

Environ. Sci. Technol.

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Second-generation anticoagulant rodenticides (SGARs) are widely used to control rodent populations, resulting in the serious secondary exposure of predators to these contaminants. In the United Kingdom (UK), professional use and purchase of SGARs were revised in the 2010s. Certain highly toxic SGARs have been authorized since then to be used outdoors around buildings as resistance-breaking chemicals under risk mitigation procedures. However, it is still uncertain whether and how these regulatory changes have influenced the secondary exposure of birds of prey to SGARs. Based on biomonitoring of the UK Common Buzzard (Buteo buteo) collected from 2001 to 2019, we assessed the temporal trend of exposure to SGARs and statistically determined potential turning points. The magnitude of difenacoum decreased over time with a seasonal fluctuation, while the magnitude and prevalence of more toxic brodifacoum, authorized to be used outdoors around buildings after the regulatory changes, increased. The summer of 2016 was statistically identified as a turning point for exposure to brodifacoum and summed SGARs that increased after this point. This time point coincided with the aforementioned regulatory changes. Our findings suggest a possible shift in SGAR use to brodifacoum from difenacoum over the decades, which may pose higher risks of impacts on wildlife.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%