Outbreaks of avian cholera in Hope Bay, Antarctica

Autores
Leotta, Gerardo Aníbal; Chinen, Isabel; Vigo, Germán Blas; Pecoraro, Marcelo Ricardo Ítalo; Rivas, Marta
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
During austral summers 1999–2000 and 2000–01, two outbreaks of avian cholera occurred in the Hope Bay area (63u249S, 56u599W), located on the tip of the Antarctic Peninsula. Eighty-six dead birds were found: five kelp gulls (Larus dominicanus), 36 skuas (Stercorarius sp.), and 45 Adelie penguins (Pygoscelis adeliae). The carcasses were studied using clinical, pathological, and microbiological criteria. Water samples from ponds where birds were settled and samples from 90 healthy birds also were analyzed during the second outbreak. Pasteurella multocida isolates were identified by biochemical tests, capsular type, somatic serotype, and susceptibility to nine antibiotics. Molecular subtyping was performed by ApaI and SmaI pulsedfield gel electrophoresis (PFGE) and enterobacterial repetitive intergenic consensus (ERICPCR). In February 2000, mortality in skuas was 16% and 2% in kelp gulls. In the 2000–01 breeding season, mortality in south polar skuas was 47%, 24% in brown skuas, 1.4% in kelp gulls, and 0.01% in Adelie penguins. All birds had lesions of avian cholera. In kelp gulls the presentation was chronic, whereas skuas and penguins suffered subacute and acute disease, respectively. Fiftyfive isolates recovered from dead birds and one from water were identified as P. multocida gallicida, type A:1. The strains presented a unique molecular pattern by PFGE and ERIC-PCR. A possible hypothesis to explain the origin of the outbreaks was that nonbreeder kelp gulls carried P. multocida gallicida to Hope Bay, and avian cholera was transmitted through water to skuas and penguins. This study reports avian cholera in new bird species, their potential role in the transmission of the disease, and the different responses of these species to the disease.
Facultad de Ciencias Veterinarias
Materia
Ciencias Veterinarias
Adelie penguin
Antarctica
avian cholera
ERIC-PCR
kelp gull
Pasteurella multocida
PFGE
skua
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/133058

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network_name_str SEDICI (UNLP)
spelling Outbreaks of avian cholera in Hope Bay, AntarcticaLeotta, Gerardo AníbalChinen, IsabelVigo, Germán BlasPecoraro, Marcelo Ricardo ÍtaloRivas, MartaCiencias VeterinariasAdelie penguinAntarcticaavian choleraERIC-PCRkelp gullPasteurella multocidaPFGEskuaDuring austral summers 1999–2000 and 2000–01, two outbreaks of avian cholera occurred in the Hope Bay area (63u249S, 56u599W), located on the tip of the Antarctic Peninsula. Eighty-six dead birds were found: five kelp gulls (Larus dominicanus), 36 skuas (Stercorarius sp.), and 45 Adelie penguins (Pygoscelis adeliae). The carcasses were studied using clinical, pathological, and microbiological criteria. Water samples from ponds where birds were settled and samples from 90 healthy birds also were analyzed during the second outbreak. Pasteurella multocida isolates were identified by biochemical tests, capsular type, somatic serotype, and susceptibility to nine antibiotics. Molecular subtyping was performed by ApaI and SmaI pulsedfield gel electrophoresis (PFGE) and enterobacterial repetitive intergenic consensus (ERICPCR). In February 2000, mortality in skuas was 16% and 2% in kelp gulls. In the 2000–01 breeding season, mortality in south polar skuas was 47%, 24% in brown skuas, 1.4% in kelp gulls, and 0.01% in Adelie penguins. All birds had lesions of avian cholera. In kelp gulls the presentation was chronic, whereas skuas and penguins suffered subacute and acute disease, respectively. Fiftyfive isolates recovered from dead birds and one from water were identified as P. multocida gallicida, type A:1. The strains presented a unique molecular pattern by PFGE and ERIC-PCR. A possible hypothesis to explain the origin of the outbreaks was that nonbreeder kelp gulls carried P. multocida gallicida to Hope Bay, and avian cholera was transmitted through water to skuas and penguins. This study reports avian cholera in new bird species, their potential role in the transmission of the disease, and the different responses of these species to the disease.Facultad de Ciencias Veterinarias2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf259-270http://sedici.unlp.edu.ar/handle/10915/133058enginfo:eu-repo/semantics/altIdentifier/issn/0090-3558info:eu-repo/semantics/altIdentifier/doi/10.7589/0090-3558-42.2.259info:eu-repo/semantics/altIdentifier/pmid/16870848info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:52Zoai:sedici.unlp.edu.ar:10915/133058Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:53.235SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Outbreaks of avian cholera in Hope Bay, Antarctica
title Outbreaks of avian cholera in Hope Bay, Antarctica
spellingShingle Outbreaks of avian cholera in Hope Bay, Antarctica
Leotta, Gerardo Aníbal
Ciencias Veterinarias
Adelie penguin
Antarctica
avian cholera
ERIC-PCR
kelp gull
Pasteurella multocida
PFGE
skua
title_short Outbreaks of avian cholera in Hope Bay, Antarctica
title_full Outbreaks of avian cholera in Hope Bay, Antarctica
title_fullStr Outbreaks of avian cholera in Hope Bay, Antarctica
title_full_unstemmed Outbreaks of avian cholera in Hope Bay, Antarctica
title_sort Outbreaks of avian cholera in Hope Bay, Antarctica
dc.creator.none.fl_str_mv Leotta, Gerardo Aníbal
Chinen, Isabel
Vigo, Germán Blas
Pecoraro, Marcelo Ricardo Ítalo
Rivas, Marta
author Leotta, Gerardo Aníbal
author_facet Leotta, Gerardo Aníbal
Chinen, Isabel
Vigo, Germán Blas
Pecoraro, Marcelo Ricardo Ítalo
Rivas, Marta
author_role author
author2 Chinen, Isabel
Vigo, Germán Blas
Pecoraro, Marcelo Ricardo Ítalo
Rivas, Marta
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Veterinarias
Adelie penguin
Antarctica
avian cholera
ERIC-PCR
kelp gull
Pasteurella multocida
PFGE
skua
topic Ciencias Veterinarias
Adelie penguin
Antarctica
avian cholera
ERIC-PCR
kelp gull
Pasteurella multocida
PFGE
skua
dc.description.none.fl_txt_mv During austral summers 1999–2000 and 2000–01, two outbreaks of avian cholera occurred in the Hope Bay area (63u249S, 56u599W), located on the tip of the Antarctic Peninsula. Eighty-six dead birds were found: five kelp gulls (Larus dominicanus), 36 skuas (Stercorarius sp.), and 45 Adelie penguins (Pygoscelis adeliae). The carcasses were studied using clinical, pathological, and microbiological criteria. Water samples from ponds where birds were settled and samples from 90 healthy birds also were analyzed during the second outbreak. Pasteurella multocida isolates were identified by biochemical tests, capsular type, somatic serotype, and susceptibility to nine antibiotics. Molecular subtyping was performed by ApaI and SmaI pulsedfield gel electrophoresis (PFGE) and enterobacterial repetitive intergenic consensus (ERICPCR). In February 2000, mortality in skuas was 16% and 2% in kelp gulls. In the 2000–01 breeding season, mortality in south polar skuas was 47%, 24% in brown skuas, 1.4% in kelp gulls, and 0.01% in Adelie penguins. All birds had lesions of avian cholera. In kelp gulls the presentation was chronic, whereas skuas and penguins suffered subacute and acute disease, respectively. Fiftyfive isolates recovered from dead birds and one from water were identified as P. multocida gallicida, type A:1. The strains presented a unique molecular pattern by PFGE and ERIC-PCR. A possible hypothesis to explain the origin of the outbreaks was that nonbreeder kelp gulls carried P. multocida gallicida to Hope Bay, and avian cholera was transmitted through water to skuas and penguins. This study reports avian cholera in new bird species, their potential role in the transmission of the disease, and the different responses of these species to the disease.
Facultad de Ciencias Veterinarias
description During austral summers 1999–2000 and 2000–01, two outbreaks of avian cholera occurred in the Hope Bay area (63u249S, 56u599W), located on the tip of the Antarctic Peninsula. Eighty-six dead birds were found: five kelp gulls (Larus dominicanus), 36 skuas (Stercorarius sp.), and 45 Adelie penguins (Pygoscelis adeliae). The carcasses were studied using clinical, pathological, and microbiological criteria. Water samples from ponds where birds were settled and samples from 90 healthy birds also were analyzed during the second outbreak. Pasteurella multocida isolates were identified by biochemical tests, capsular type, somatic serotype, and susceptibility to nine antibiotics. Molecular subtyping was performed by ApaI and SmaI pulsedfield gel electrophoresis (PFGE) and enterobacterial repetitive intergenic consensus (ERICPCR). In February 2000, mortality in skuas was 16% and 2% in kelp gulls. In the 2000–01 breeding season, mortality in south polar skuas was 47%, 24% in brown skuas, 1.4% in kelp gulls, and 0.01% in Adelie penguins. All birds had lesions of avian cholera. In kelp gulls the presentation was chronic, whereas skuas and penguins suffered subacute and acute disease, respectively. Fiftyfive isolates recovered from dead birds and one from water were identified as P. multocida gallicida, type A:1. The strains presented a unique molecular pattern by PFGE and ERIC-PCR. A possible hypothesis to explain the origin of the outbreaks was that nonbreeder kelp gulls carried P. multocida gallicida to Hope Bay, and avian cholera was transmitted through water to skuas and penguins. This study reports avian cholera in new bird species, their potential role in the transmission of the disease, and the different responses of these species to the disease.
publishDate 2006
dc.date.none.fl_str_mv 2006
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:eu-repo/semantics/altIdentifier/doi/10.7589/0090-3558-42.2.259
info:eu-repo/semantics/altIdentifier/pmid/16870848
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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259-270
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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