Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers

The widespread use of second-generation anticoagulant rodenticides (SGARs) and their high persistence in animal tissues has led to these compounds becoming ubiquitous in rodent-predator-scavenger food webs. Exposure to SGARs has usually been investigated in wildlife species found dead, and despite g...

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Autores: Oliva-Vidal, Pilar, Martínez, José María, Sánchez-Barbudo, Inés S., Camarero, Pablo R., Colomer, M. Àngels (Maria Àngels), Margalida, Antoni, Mateo, Rafael
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/84432
Acceso en línea:https://doi.org/10.1016/j.envpol.2022.120385
http://hdl.handle.net/10459.1/84432
Access Level:acceso abierto
Palabra clave:Anticoagulant rodenticides
Non-target species
Raptors
Scavengers
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spelling Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengersOliva-Vidal, PilarMartínez, José MaríaSánchez-Barbudo, Inés S.Camarero, Pablo R.Colomer, M. Àngels (Maria Àngels)Margalida, AntoniMateo, RafaelAnticoagulant rodenticidesNon-target speciesRaptorsScavengersThe widespread use of second-generation anticoagulant rodenticides (SGARs) and their high persistence in animal tissues has led to these compounds becoming ubiquitous in rodent-predator-scavenger food webs. Exposure to SGARs has usually been investigated in wildlife species found dead, and despite growing evidence of the potential risk of secondary poisoning of predators and scavengers, the current worldwide exposure of free-living scavenging birds to SGARs remains scarcely investigated. We present the first active monitoring of blood SGAR concentrations and prevalence in the four European obligate (i.e., vultures) and facultative (red and black kites) avian scavengers in NE Spain. We analysed 261 free-living birds and detected SGARs in 39.1% (n = 102) of individuals. Both SGAR prevalence and concentrations (ΣSGARs) were related to the age and foraging behaviour of the species studied. Black kites showed the highest prevalence (100%), followed by red kites (66.7%), Egyptian (64.2%), bearded (20.9%), griffon (16.9%) and cinereous (6.3%) vultures. Overall, both the prevalence and average ΣSGARs were higher in non-nestlings than nestlings, and in species such as kites and Egyptian vultures foraging in anthropic landscapes (e.g., landfill sites and livestock farms) and exploiting small/medium-sized carrions. Brodifacoum was most prevalent (28.8%), followed by difenacoum (16.1%), flocoumafen (12.3%) and bromadiolone (7.3%). In SGAR-positive birds, the ΣSGAR (mean ± SE) was 7.52 ± 0.95 ng mL−1; the highest level detected being 53.50 ng mL−1. The most abundant diastereomer forms were trans-bromadiolone and flocoumafen, and cis-brodifacoum and difenacoum, showing that lower impact formulations could reduce secondary exposures of non-target species. Our findings suggest that SGARs can bioaccumulate in scavenging birds, showing the potential risk to avian scavenging guilds in Europe and elsewhere. We highlight the need for further studies on the potential adverse effects associated with concentrations of SGARSs in the blood to better interpret active monitoring studies of free-living birds.POV and AM were funded within the framework of the project RTI2018- 099609-B-C22, from the I + D + I National Plan funded by the Ministry of Science, Innovation and Universities. SGAR analyses have been performed with the own resources obtained from the Service of Toxicological Analysis at IREC (CGP170122, University of Castilla-La Mancha). PRC benefited from a contract of the Research Plan of the University of Castilla-La Mancha funded by European Fund for the Regional Development.Elsevier2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1016/j.envpol.2022.120385http://hdl.handle.net/10459.1/84432reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésMINECO/PN2017-2020/RTI2018‐099609‐B‐C22Reproducció del document publicat a https://doi.org/10.1016/j.envpol.2022.120385Environmental Pollution, 2022, vol. 315, núm.120385, p.1-11cc-by-nc-nd (c) Oliva-Vidal et al., 2022info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/844322026-06-24T12:42:17Z
dc.title.none.fl_str_mv Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
title Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
spellingShingle Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
Oliva-Vidal, Pilar
Anticoagulant rodenticides
Non-target species
Raptors
Scavengers
title_short Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
title_full Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
title_fullStr Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
title_full_unstemmed Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
title_sort Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
dc.creator.none.fl_str_mv Oliva-Vidal, Pilar
Martínez, José María
Sánchez-Barbudo, Inés S.
Camarero, Pablo R.
Colomer, M. Àngels (Maria Àngels)
Margalida, Antoni
Mateo, Rafael
author Oliva-Vidal, Pilar
author_facet Oliva-Vidal, Pilar
Martínez, José María
Sánchez-Barbudo, Inés S.
Camarero, Pablo R.
Colomer, M. Àngels (Maria Àngels)
Margalida, Antoni
Mateo, Rafael
author_role author
author2 Martínez, José María
Sánchez-Barbudo, Inés S.
Camarero, Pablo R.
Colomer, M. Àngels (Maria Àngels)
Margalida, Antoni
Mateo, Rafael
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Anticoagulant rodenticides
Non-target species
Raptors
Scavengers
topic Anticoagulant rodenticides
Non-target species
Raptors
Scavengers
description The widespread use of second-generation anticoagulant rodenticides (SGARs) and their high persistence in animal tissues has led to these compounds becoming ubiquitous in rodent-predator-scavenger food webs. Exposure to SGARs has usually been investigated in wildlife species found dead, and despite growing evidence of the potential risk of secondary poisoning of predators and scavengers, the current worldwide exposure of free-living scavenging birds to SGARs remains scarcely investigated. We present the first active monitoring of blood SGAR concentrations and prevalence in the four European obligate (i.e., vultures) and facultative (red and black kites) avian scavengers in NE Spain. We analysed 261 free-living birds and detected SGARs in 39.1% (n = 102) of individuals. Both SGAR prevalence and concentrations (ΣSGARs) were related to the age and foraging behaviour of the species studied. Black kites showed the highest prevalence (100%), followed by red kites (66.7%), Egyptian (64.2%), bearded (20.9%), griffon (16.9%) and cinereous (6.3%) vultures. Overall, both the prevalence and average ΣSGARs were higher in non-nestlings than nestlings, and in species such as kites and Egyptian vultures foraging in anthropic landscapes (e.g., landfill sites and livestock farms) and exploiting small/medium-sized carrions. Brodifacoum was most prevalent (28.8%), followed by difenacoum (16.1%), flocoumafen (12.3%) and bromadiolone (7.3%). In SGAR-positive birds, the ΣSGAR (mean ± SE) was 7.52 ± 0.95 ng mL−1; the highest level detected being 53.50 ng mL−1. The most abundant diastereomer forms were trans-bromadiolone and flocoumafen, and cis-brodifacoum and difenacoum, showing that lower impact formulations could reduce secondary exposures of non-target species. Our findings suggest that SGARs can bioaccumulate in scavenging birds, showing the potential risk to avian scavenging guilds in Europe and elsewhere. We highlight the need for further studies on the potential adverse effects associated with concentrations of SGARSs in the blood to better interpret active monitoring studies of free-living birds.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.envpol.2022.120385
http://hdl.handle.net/10459.1/84432
url https://doi.org/10.1016/j.envpol.2022.120385
http://hdl.handle.net/10459.1/84432
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv MINECO/PN2017-2020/RTI2018‐099609‐B‐C22
Reproducció del document publicat a https://doi.org/10.1016/j.envpol.2022.120385
Environmental Pollution, 2022, vol. 315, núm.120385, p.1-11
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Oliva-Vidal et al., 2022
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Oliva-Vidal et al., 2022
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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