Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States.
Raptors, including eagles, are geographically widespread and sit atop the food chain, thereby serving an important role in maintaining ecosystem balance. After facing population declines associated with exposure to organochlorine insecticides such as dichlorodiphenyltrichloroethane (DDT), bald eagle...
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ftdoajarticles:oai:doaj.org/article:7bb0332c4b5947d5ab5d21bf81717f36 2023-05-15T18:49:20+02:00 Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. Kevin D Niedringhaus Nicole M Nemeth Samantha Gibbs Jared Zimmerman Lisa Shender Kate Slankard Heather Fenton Bahnson Charlie Martha Frances Dalton Elizabeth J Elsmo Robert Poppenga Brian Millsap Mark G Ruder 2021-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0246134 https://doaj.org/article/7bb0332c4b5947d5ab5d21bf81717f36 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0246134 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0246134 https://doaj.org/article/7bb0332c4b5947d5ab5d21bf81717f36 PLoS ONE, Vol 16, Iss 4, p e0246134 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1371/journal.pone.0246134 2022-12-31T07:59:08Z Raptors, including eagles, are geographically widespread and sit atop the food chain, thereby serving an important role in maintaining ecosystem balance. After facing population declines associated with exposure to organochlorine insecticides such as dichlorodiphenyltrichloroethane (DDT), bald eagles (Haliaeetus leucocephalus) have recovered from the brink of extinction. However, both bald and golden eagles (Aquila chrysaetos) are exposed to a variety of other toxic compounds in the environment that could have population impacts. Few studies have focused on anticoagulant rodenticide (AR) exposure in eagles. Therefore, the purpose of this study was to determine the types of ARs that eagles are exposed to in the USA and better define the extent of toxicosis (i.e., fatal illness due to compound exposure). Diagnostic case records from bald and golden eagles submitted to the Southeastern Cooperative Wildlife Disease Study (University of Georgia) 2014 through 2018 were reviewed. Overall, 303 eagles were examined, and the livers from 116 bald eagles and 17 golden eagles were tested for ARs. The percentage of AR exposure (i.e., detectable levels but not associated with mortality) in eagles was high; ARs were detected in 109 (82%) eagles, including 96 (83%) bald eagles and 13 (77%) golden eagles. Anticoagulant rodenticide toxicosis was determined to be the cause of mortality in 12 (4%) of the 303 eagles examined, including 11 bald eagles and 1 golden eagle. Six different AR compounds were detected in these eagles, with brodifacoum and bromadiolone most frequently detected (81% and 25% of eagles tested, respectively). These results suggest that some ARs, most notably brodifacoum, are widespread in the environment and are commonly consumed by eagles. This highlights the need for research to understand the pathways of AR exposure in eagles, which may help inform policy and regulatory actions to mitigate AR exposure risk. Article in Journal/Newspaper Aquila chrysaetos golden eagle Directory of Open Access Journals: DOAJ Articles PLOS ONE 16 4 e0246134 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Kevin D Niedringhaus Nicole M Nemeth Samantha Gibbs Jared Zimmerman Lisa Shender Kate Slankard Heather Fenton Bahnson Charlie Martha Frances Dalton Elizabeth J Elsmo Robert Poppenga Brian Millsap Mark G Ruder Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. |
topic_facet |
Medicine R Science Q |
description |
Raptors, including eagles, are geographically widespread and sit atop the food chain, thereby serving an important role in maintaining ecosystem balance. After facing population declines associated with exposure to organochlorine insecticides such as dichlorodiphenyltrichloroethane (DDT), bald eagles (Haliaeetus leucocephalus) have recovered from the brink of extinction. However, both bald and golden eagles (Aquila chrysaetos) are exposed to a variety of other toxic compounds in the environment that could have population impacts. Few studies have focused on anticoagulant rodenticide (AR) exposure in eagles. Therefore, the purpose of this study was to determine the types of ARs that eagles are exposed to in the USA and better define the extent of toxicosis (i.e., fatal illness due to compound exposure). Diagnostic case records from bald and golden eagles submitted to the Southeastern Cooperative Wildlife Disease Study (University of Georgia) 2014 through 2018 were reviewed. Overall, 303 eagles were examined, and the livers from 116 bald eagles and 17 golden eagles were tested for ARs. The percentage of AR exposure (i.e., detectable levels but not associated with mortality) in eagles was high; ARs were detected in 109 (82%) eagles, including 96 (83%) bald eagles and 13 (77%) golden eagles. Anticoagulant rodenticide toxicosis was determined to be the cause of mortality in 12 (4%) of the 303 eagles examined, including 11 bald eagles and 1 golden eagle. Six different AR compounds were detected in these eagles, with brodifacoum and bromadiolone most frequently detected (81% and 25% of eagles tested, respectively). These results suggest that some ARs, most notably brodifacoum, are widespread in the environment and are commonly consumed by eagles. This highlights the need for research to understand the pathways of AR exposure in eagles, which may help inform policy and regulatory actions to mitigate AR exposure risk. |
format |
Article in Journal/Newspaper |
author |
Kevin D Niedringhaus Nicole M Nemeth Samantha Gibbs Jared Zimmerman Lisa Shender Kate Slankard Heather Fenton Bahnson Charlie Martha Frances Dalton Elizabeth J Elsmo Robert Poppenga Brian Millsap Mark G Ruder |
author_facet |
Kevin D Niedringhaus Nicole M Nemeth Samantha Gibbs Jared Zimmerman Lisa Shender Kate Slankard Heather Fenton Bahnson Charlie Martha Frances Dalton Elizabeth J Elsmo Robert Poppenga Brian Millsap Mark G Ruder |
author_sort |
Kevin D Niedringhaus |
title |
Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. |
title_short |
Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. |
title_full |
Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. |
title_fullStr |
Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. |
title_full_unstemmed |
Anticoagulant rodenticide exposure and toxicosis in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) in the United States. |
title_sort |
anticoagulant rodenticide exposure and toxicosis in bald eagles (haliaeetus leucocephalus) and golden eagles (aquila chrysaetos) in the united states. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
https://doi.org/10.1371/journal.pone.0246134 https://doaj.org/article/7bb0332c4b5947d5ab5d21bf81717f36 |
genre |
Aquila chrysaetos golden eagle |
genre_facet |
Aquila chrysaetos golden eagle |
op_source |
PLoS ONE, Vol 16, Iss 4, p e0246134 (2021) |
op_relation |
https://doi.org/10.1371/journal.pone.0246134 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0246134 https://doaj.org/article/7bb0332c4b5947d5ab5d21bf81717f36 |
op_doi |
https://doi.org/10.1371/journal.pone.0246134 |
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PLOS ONE |
container_volume |
16 |
container_issue |
4 |
container_start_page |
e0246134 |
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