Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska
To eradicate invasive Norway rats, an aerial broadcast of the rodenticide Brodifacoum-25W Conservation was conducted on 2,777-ha Rat Island, within the Aleutian Islands Unit of Alaska Maritime National Wildlife Refuge, between 29 September and 5 October 2008. During subsequent visits to Rat Island (...
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Language: | English |
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ftcdlib:qt02v7t4mw 2023-05-15T17:43:03+02:00 Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska Ebbert , Steve Burek-Huntington , Kathy 153 - 160 2010-01-01 application/pdf http://www.escholarship.org/uc/item/02v7t4mw english eng eScholarship, University of California qt02v7t4mw http://www.escholarship.org/uc/item/02v7t4mw public Ebbert , Steve; & Burek-Huntington , Kathy. (2010). Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska. Proceedings of the Vertebrate Pest Conference, 24(24), 153 - 160. doi:10.5070/V424110700. Retrieved from: http://www.escholarship.org/uc/item/02v7t4mw aerial broadcast Alaska Aleutian Islands bird deaths brodifacoum ecosystem restoration eradication invasive non-target poisoning Norway rat pesticides Rat Island Rattus norvegicus rodenticides secondary poisoning Life Sciences article 2010 ftcdlib https://doi.org/10.5070/V424110700 2019-04-05T22:52:20Z To eradicate invasive Norway rats, an aerial broadcast of the rodenticide Brodifacoum-25W Conservation was conducted on 2,777-ha Rat Island, within the Aleutian Islands Unit of Alaska Maritime National Wildlife Refuge, between 29 September and 5 October 2008. During subsequent visits to Rat Island (in spring and fall 2009) to check for evidence of remaining rats and to look for evidence of nontarget mortality, personnel found an unexpectedly high number of dead birds: more than 420 carcasses, mostly glaucous-winged gulls and bald eagles, but also included 24 other species. Some carcasses had tissue suitable for analysis and were collected. Seventy bird carcasses were necropsied and cause of death was determined for 50 birds; 45 died of brodifacoum toxicosis. Necropsy determined almost all gulls and eagles had extensive hemorrhaging, consistent with brodifacoum poisoning. All eagles and all but 1 gull tested positive for brodifacoum residues. Positive tests for brodifacoum also were recorded for single specimens of emperor goose, northern fulmar, pelagic cormorant, peregrine falcon, rock sandpiper, and gray-crowned rosy finch. Two Lapland longspurs tested positive for exposure to brodifacoum. Nontarget bird mortality from brodifacoum exposure at Rat Island was higher than predicted in the Environmental Assessment. Article in Journal/Newspaper Northern Fulmar peregrine falcon Alaska Aleutian Islands Lapland University of California: eScholarship Falcon Rock ENVELOPE(-130.370,-130.370,54.216,54.216) Finch ENVELOPE(167.383,167.383,-72.567,-72.567) Fulmar ENVELOPE(-46.016,-46.016,-60.616,-60.616) Norway Proceedings of the Vertebrate Pest Conference 24 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
aerial broadcast Alaska Aleutian Islands bird deaths brodifacoum ecosystem restoration eradication invasive non-target poisoning Norway rat pesticides Rat Island Rattus norvegicus rodenticides secondary poisoning Life Sciences |
spellingShingle |
aerial broadcast Alaska Aleutian Islands bird deaths brodifacoum ecosystem restoration eradication invasive non-target poisoning Norway rat pesticides Rat Island Rattus norvegicus rodenticides secondary poisoning Life Sciences Ebbert , Steve Burek-Huntington , Kathy Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska |
topic_facet |
aerial broadcast Alaska Aleutian Islands bird deaths brodifacoum ecosystem restoration eradication invasive non-target poisoning Norway rat pesticides Rat Island Rattus norvegicus rodenticides secondary poisoning Life Sciences |
description |
To eradicate invasive Norway rats, an aerial broadcast of the rodenticide Brodifacoum-25W Conservation was conducted on 2,777-ha Rat Island, within the Aleutian Islands Unit of Alaska Maritime National Wildlife Refuge, between 29 September and 5 October 2008. During subsequent visits to Rat Island (in spring and fall 2009) to check for evidence of remaining rats and to look for evidence of nontarget mortality, personnel found an unexpectedly high number of dead birds: more than 420 carcasses, mostly glaucous-winged gulls and bald eagles, but also included 24 other species. Some carcasses had tissue suitable for analysis and were collected. Seventy bird carcasses were necropsied and cause of death was determined for 50 birds; 45 died of brodifacoum toxicosis. Necropsy determined almost all gulls and eagles had extensive hemorrhaging, consistent with brodifacoum poisoning. All eagles and all but 1 gull tested positive for brodifacoum residues. Positive tests for brodifacoum also were recorded for single specimens of emperor goose, northern fulmar, pelagic cormorant, peregrine falcon, rock sandpiper, and gray-crowned rosy finch. Two Lapland longspurs tested positive for exposure to brodifacoum. Nontarget bird mortality from brodifacoum exposure at Rat Island was higher than predicted in the Environmental Assessment. |
format |
Article in Journal/Newspaper |
author |
Ebbert , Steve Burek-Huntington , Kathy |
author_facet |
Ebbert , Steve Burek-Huntington , Kathy |
author_sort |
Ebbert , Steve |
title |
Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska |
title_short |
Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska |
title_full |
Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska |
title_fullStr |
Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska |
title_full_unstemmed |
Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska |
title_sort |
anticoagulant residual concentration and poisoning in birds following a large-scale aerial application of 25 ppm brodifacoum bait for rat eradication on rat island, alaska |
publisher |
eScholarship, University of California |
publishDate |
2010 |
url |
http://www.escholarship.org/uc/item/02v7t4mw |
op_coverage |
153 - 160 |
long_lat |
ENVELOPE(-130.370,-130.370,54.216,54.216) ENVELOPE(167.383,167.383,-72.567,-72.567) ENVELOPE(-46.016,-46.016,-60.616,-60.616) |
geographic |
Falcon Rock Finch Fulmar Norway |
geographic_facet |
Falcon Rock Finch Fulmar Norway |
genre |
Northern Fulmar peregrine falcon Alaska Aleutian Islands Lapland |
genre_facet |
Northern Fulmar peregrine falcon Alaska Aleutian Islands Lapland |
op_source |
Ebbert , Steve; & Burek-Huntington , Kathy. (2010). Anticoagulant Residual Concentration and Poisoning in Birds Following a Large-Scale Aerial Application of 25 ppm Brodifacoum Bait for Rat Eradication on Rat Island, Alaska. Proceedings of the Vertebrate Pest Conference, 24(24), 153 - 160. doi:10.5070/V424110700. Retrieved from: http://www.escholarship.org/uc/item/02v7t4mw |
op_relation |
qt02v7t4mw http://www.escholarship.org/uc/item/02v7t4mw |
op_rights |
public |
op_doi |
https://doi.org/10.5070/V424110700 |
container_title |
Proceedings of the Vertebrate Pest Conference |
container_volume |
24 |
_version_ |
1766145032249671680 |