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Intestinal spirocha...
Intestinal spirochaetes (genus Brachyspira) colonise wild birds in the southern Atlantic region and Antarctica
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- Jansson, Desirée (author)
- Department of Animal Health and Antimicrobial Strategies, National Veterinary Institute, Uppsala, Sweden,National Veterinary Institute (SVA)
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- Mushtaq, Mamoona (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjursgenetik (HGEN),Department of Animal Breeding and Genetics
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- Johansson, Karl-Erik (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Inst för biomedicin och veterinär folkhälsovetenskap,Department of Biomedical Science and Veterinary Public Health
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- Bonnedahl, Jonas (author)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Department of Infectious Diseases, Kalmar County Hospital, Kalmar, Sweden; Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden,Linnéuniversitetet, Institutionen för biologi och miljö (BOM)
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- Waldenström, Jonas (author)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS,Linnéuniversitetet, Institutionen för biologi och miljö (BOM),Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden
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- Andersson, Dan I. (author)
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
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- Broman, Tina (author)
- Division of CBRN Defence and SecurityFOI – Swedish Defence Research Agency, Umeå, Sweden
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- Berg, Charlotte (author)
- Swedish University of Agricultural Sciences,Department of Animal Environment and HealthSwedish University of Agricultural Sciences, Skara, Sweden
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- Olsen, Björn (author)
- Uppsala universitet,Infektionssjukdomar,Section of Infectious Diseases Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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- Berg, Lotta (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjurens miljö och hälsa (HMH),Department of Animal Environment and Health
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(creator_code:org_t)
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- 2015-11-18
- 2015
- English.
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In: Infection Ecology & Epidemiology. - : Informa UK Limited. - 2000-8686. ; 5
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Abstract
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- INTRODUCTION: The genus Brachyspira contains well-known enteric pathogens of veterinary significance, suggested agents of colonic disease in humans, and one potentially zoonotic agent. There are recent studies showing that Brachyspira are more widespread in the wildlife community than previously thought. There are no records of this genus in wildlife from the southern Atlantic region and Antarctica. Our aim was therefore, to determine whether intestinal spirochaetes of genus Brachyspira colonise marine and coastal birds in this region.METHOD: Faecal samples were collected from marine and coastal birds in the southern Atlantic region, including sub-Antarctic islands and Antarctica, in 2002, 2009, and 2012, with the aim to isolate and characterise zoonotic agents. In total, 205 samples from 11 bird species were selectively cultured for intestinal spirochaetes of genus Brachyspira. To identify isolates to species level, they were subjected to phenotyping, species-specific polymerase chain reactions, sequencing of partial 16S rRNA, NADH oxidase (nox), and tlyA genes, and phylogenetic analysis. Antimicrobial susceptibility tests were performed.RESULTS: Fourteen unique strains were obtained from 10 birds of three species: four snowy sheathbills (Chionis albus), three kelp geese (Chloephaga hybrida subsp. malvinarum), and three brown skua (Stercorarius antarcticus subsp. lonnbergi) sampled on the Falkland Islands, Tierra del Fuego in Argentina, South Georgia, South Shetland Islands, and the Antarctic Peninsula. Five Brachyspira strains were closely related to potentially enteropathogenic Brachyspira sp. of chickens: B. intermedia (n=2, from snowy sheathbills), and B. alvinipulli (n=3, from a kelp goose and two snowy sheathbills). Three strains from kelp geese were most similar to the presumed non-pathogenic species 'B. pulli' and B. murdochii, whereas the remaining six strains could not be attributed to currently known species. No isolates related to human strains were found. None of the tested strains showed decreased susceptibility to tiamulin, valnemulin, doxycycline, tylvalosin, lincomycin, or tylosin.CONCLUSIONS: This is the first report of intestinal spirochaetes from this region. Despite limitations of current diagnostic methods, our results, together with earlier studies, show that Brachyspira spp., including potentially pathogenic strains, occur globally among free-living avian hosts, and that this genus encompasses a higher degree of biodiversity than previously recognised.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Keyword
- Antarctica
- Antimicrobial susceptibility
- Brachyspira
- Brown skua
- Kelp goose
- Intestinal spirochaete
- Phylogeny
- Snowy sheathbill
- Southern Atlantic region
- Sub-Antarctic islands
- Zoonotic Ecology
- Zoonotisk ekologi
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Jansson, Desirée
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Mushtaq, Mamoona
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Johansson, Karl- ...
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Bonnedahl, Jonas
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Waldenström, Jon ...
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Andersson, Dan I ...
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Broman, Tina
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Berg, Charlotte
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Olsen, Björn
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Berg, Lotta
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Microbiology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Zoology
- Articles in the publication
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Infection Ecolog ...
- By the university
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Linnaeus University
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Uppsala University
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Linköping University
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Swedish University of Agricultural Sciences