Dataset Information

Detection of Chlamydiaceae in Swiss wild birds sampled at a bird rehabilitation centre.

ABSTRACT: Background:Annually, 800-1500 wild birds are admitted to the rehabilitation centre of the Swiss Ornithological Institute, Sempach, Lucerne, Switzerland. The workers of the centre come in close contact with the avian patients and might therefore be exposed to zoonotic agents shed by these birds, such as Chlamydia psittaci. Methods:In the present study, 91 choanal, 91 cloacal and 267 faecal swabs from 339 wild birds of 42 species were investigated using a stepwise diagnostic approach. Results:Chlamydiaceae were detected in 0.9 per cent (0.3-2.6 per cent) of birds (n=3), all of them members of the Columbidae family. The Chlamydiaceae species of two of these birds (one Eurasian collared dove, one fancy pigeon) were identified as C psittaci types B and E by PCR and outer membrane protein A genotyping. Conclusion:The findings of the current study suggest that zoonotic transmission of Chlamydiaceae is very unlikely for songbird and waterfowl species tested herein, while pigeons might pose a risk to workers at rehabilitation centres.

SUBMITTER: Stalder S

PROVIDER: S-EPMC7662422 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Detection of <i>Chlamydiaceae</i> in Swiss wild birds sampled at a bird rehabilitation centre.

Stalder Sandro S Marti Hanna H Borel Nicole N Mattmann Prisca P Vogler Barbara B Wolfrum Nina N Albini Sarah S

Veterinary record open 20201112 1

<h4>Background</h4>Annually, 800-1500 wild birds are admitted to the rehabilitation centre of the Swiss Ornithological Institute, Sempach, Lucerne, Switzerland. The workers of the centre come in close contact with the avian patients and might therefore be exposed to zoonotic agents shed by these birds, such as <i>Chlamydia psittaci</i>.<h4>Methods</h4>In the present study, 91 choanal, 91 cloacal and 267 faecal swabs from 339 wild birds of 42 species were investigated using a stepwise diagnostic ...[more]

PMID: 33224510

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Project description:Wild migratory birds are essential for sustaining healthy ecosystems, but the effects of a rehabilitation period on their gut microbiomes are still unclear. Here, we performed longitudinal sampling, 16S rRNA sequencing, and antibiotic resistance monitoring of the gut microbiome of six species of wild migratory birds protected as natural monuments in South Korea that are subject to short- or long-term rehabilitation periods. Overall, gut microbiome diversity was significantly decreased in the early stages of rehabilitation, and it did not recover to a level comparable to that of wild birds. Moreover, while the abundance of short-chain fatty acid-producing bacteria decreased, that of zoonotic pathogens increased, indicating rehabilitation-induced dysbiosis. The metabolic pathways involved in the degradation of aromatic pollutants were significantly downregulated, suggesting the depletion of pollutant-degrading microorganisms. Antibiotic resistance of Escherichia coli significantly increased during rehabilitation, particularly ciprofloxacin and tetracycline resistance, and seven of the rehabilitated wild birds acquired multidrug resistance. The diet and habitat changes experienced by wild migratory birds during rehabilitation may have induced the observed gut microbiome dysbiosis and acquisition of antibiotic resistance. These rehabilitation-induced alterations might affect the adaptability of wild birds to their natural environments and contribute to the spread of antibiotic resistance after their release. IMPORTANCE Wild migratory birds are key for ecosystem health but highly sensitive to anthropogenic activities. Therefore, wild migratory birds often undergo rehabilitation to prevent species extinction or biodiversity monitoring. However, the impact of rehabilitation on the gut microbiome of wild migratory birds, which is closely associated with host fitness, remains unclear. For the migratory bird species considered natural monuments in South Korea evaluated here, such impacts could include rehabilitation-induced gut microbiome dysbiosis and acquisition of antibiotic resistance, with possible repercussions on the adaptability of wild birds and spread of antibiotic resistance in the environment after their release. Therefore, the dynamics of the gut microbiome and antibiotic resistance should be considered for implementing sustainable rehabilitation strategies.

Dataset Information

Detection of Chlamydiaceae in Swiss wild birds sampled at a bird rehabilitation centre.

Publications

Detection of <i>Chlamydiaceae</i> in Swiss wild birds sampled at a bird rehabilitation centre.

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