Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean
TFM One Health Campylobacter and Salmonella are among the most commonly reported zoonoses in the EU and USA and have a strong impact on public health. Poultry are considered the main reservoir and source of infection for humans, but wild birds also play an important role in the epidemiology of these...
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ftuabarcelonapb:oai:ddd.uab.cat:259723 2023-12-03T10:13:53+01:00 Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean Ribes Mengual, Irene Universitat Autònoma de Barcelona. Facultat de Veterinària Darwich Soliva, Laila 2021 application/pdf https://ddd.uab.cat/record/259723 eng eng https://ddd.uab.cat/record/259723 urn:oai:ddd.uab.cat:259723 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/4.0/ Zoonosi Treball de fi de postgrau 2021 ftuabarcelonapb 2023-11-08T00:54:44Z TFM One Health Campylobacter and Salmonella are among the most commonly reported zoonoses in the EU and USA and have a strong impact on public health. Poultry are considered the main reservoir and source of infection for humans, but wild birds also play an important role in the epidemiology of these pathogens as they are usually asymptomatic carriers able to maintain infection and disperse them over long distances through migratory movements. Antarctic and sub-Antarctic regions were long thought to be protected from pathogens introduction, but recent studies have reported the presence of human and animal pathogens. To gain insight into the epidemiology of Campylobacter and Salmonella in seabirds inhabiting the Southern Ocean, 60 samples from different species of seabirds were sampled at Crozet, Amsterdam and Kerguelen islands during December 2020. We analysed them by direct PCR detection, obtaining an overall prevalence of 16.67% for Campylobacter and 6.67% for Salmonella. Furthermore, 54 Campylobacter isolates and 29 Salmonella isolates recovered from previous samplings were also included in the study to determine the Campylobacter species and Salmonella serovars, and to assess their genetic diversity by means of RFLP, PFGE and ERIC-PCR. Campylobacter species mainly included were C. lari and C. jejuni. Molecular typing techniques showed a high genetic diversity among the Campylobacter isolates, but also some clusters suggest a certain connectivity among Southern Ocean localities and a lack of host specificity. Salmonella serovars identified were Typhimurium, Enteritidis, Newport and Chincol, which showed a low genetic diversity. The presence of some Campylobacter genotypes and Salmonella serovars suggest that events of reverse zoonoses have occurred in the region. Our results highlight the role of seabirds, especially skuas, as disseminators of pathogens through their foraging and migration movements, as well as the need of further studies to assess the impact of human activity on the introduction of new ... Other/Unknown Material Antarc* Antarctic Kerguelen Islands Southern Ocean Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Antarctic Southern Ocean Kerguelen Kerguelen Islands |
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Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
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language |
English |
topic |
Zoonosi |
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Zoonosi Ribes Mengual, Irene Universitat Autònoma de Barcelona. Facultat de Veterinària Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean |
topic_facet |
Zoonosi |
description |
TFM One Health Campylobacter and Salmonella are among the most commonly reported zoonoses in the EU and USA and have a strong impact on public health. Poultry are considered the main reservoir and source of infection for humans, but wild birds also play an important role in the epidemiology of these pathogens as they are usually asymptomatic carriers able to maintain infection and disperse them over long distances through migratory movements. Antarctic and sub-Antarctic regions were long thought to be protected from pathogens introduction, but recent studies have reported the presence of human and animal pathogens. To gain insight into the epidemiology of Campylobacter and Salmonella in seabirds inhabiting the Southern Ocean, 60 samples from different species of seabirds were sampled at Crozet, Amsterdam and Kerguelen islands during December 2020. We analysed them by direct PCR detection, obtaining an overall prevalence of 16.67% for Campylobacter and 6.67% for Salmonella. Furthermore, 54 Campylobacter isolates and 29 Salmonella isolates recovered from previous samplings were also included in the study to determine the Campylobacter species and Salmonella serovars, and to assess their genetic diversity by means of RFLP, PFGE and ERIC-PCR. Campylobacter species mainly included were C. lari and C. jejuni. Molecular typing techniques showed a high genetic diversity among the Campylobacter isolates, but also some clusters suggest a certain connectivity among Southern Ocean localities and a lack of host specificity. Salmonella serovars identified were Typhimurium, Enteritidis, Newport and Chincol, which showed a low genetic diversity. The presence of some Campylobacter genotypes and Salmonella serovars suggest that events of reverse zoonoses have occurred in the region. Our results highlight the role of seabirds, especially skuas, as disseminators of pathogens through their foraging and migration movements, as well as the need of further studies to assess the impact of human activity on the introduction of new ... |
author2 |
Darwich Soliva, Laila |
format |
Other/Unknown Material |
author |
Ribes Mengual, Irene Universitat Autònoma de Barcelona. Facultat de Veterinària |
author_facet |
Ribes Mengual, Irene Universitat Autònoma de Barcelona. Facultat de Veterinària |
author_sort |
Ribes Mengual, Irene |
title |
Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean |
title_short |
Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean |
title_full |
Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean |
title_fullStr |
Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean |
title_full_unstemmed |
Epidemiology of zoonotic enteric bacteria in seabirds from Southern Ocean |
title_sort |
epidemiology of zoonotic enteric bacteria in seabirds from southern ocean |
publishDate |
2021 |
url |
https://ddd.uab.cat/record/259723 |
geographic |
Antarctic Southern Ocean Kerguelen Kerguelen Islands |
geographic_facet |
Antarctic Southern Ocean Kerguelen Kerguelen Islands |
genre |
Antarc* Antarctic Kerguelen Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Kerguelen Islands Southern Ocean |
op_relation |
https://ddd.uab.cat/record/259723 urn:oai:ddd.uab.cat:259723 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/4.0/ |
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1784260868079353856 |