| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Occurrence, quantification, and genotyping of Mycoplasma conjunctivae in wild Caprinae with and without infectious keratoconjunctivitis |
| Autor/-in: | Mavrot, Fabien Vilei, Edy M. Marreros, Nelson Signer, Claudio Frey, Joachim Ryser-Degiorgis, Marie-Pierre |
| DOI: | 10.7589/0090-3558-48.3.619 |
| Erschienen in: | Journal of Wildlife Diseases |
| Band(Heft): | 48 |
| Heft: | 3 |
| Seite(n): | 619 |
| Seiten bis: | 631 |
| Erscheinungsdatum: | 2012 |
| Verlag / Hrsg. Institution: | Wildlife Disease Association |
| ISSN: | 0090-3558 1943-3700 |
| Sprache: | Englisch |
| Fachgebiet (DDC): | 571: Physiologie und verwandte Themen 590: Tiere (Zoologie) |
| Zusammenfassung: | Mycoplasma conjunctivae, the causative agent of infectious keratoconjunctivitis (IKC), was recently detected in asymptomatic Alpine ibex (Capra ibex ibex). This suggested that an external source of infection may not be required for an IKC outbreak in wildlife but might be initiated by healthy carriers, which contradicted previous serologic investigations in chamois. Our aims were to 1) assess the prevalence of M. conjunctivae among asymptomatic ibex and Alpine chamois (Rupicapra rupicapra rupicapra) and its frequency in IKC-affected animals, 2) determine mycoplasma loads in different disease stages, and 3) characterize the M. conjunctivae strains involved. Eye swabs from 654 asymptomatic and 204 symptomatic animals were collected in diverse Swiss regions between 2008 and 2010, and tested by TaqMan real-time PCR. Data analysis was performed considering various patterns of IKC occurrence in the respective sampling regions. Strains from 24 animals were compared by cluster analysis. Prevalence of M. conjunctivae was 5.6% (95% confidence interval [CI]: 3.7-8.1%) in asymptomatic ibex and 5.8% (CI: 3.0-9.9%) in asymptomatic chamois, with significant differences between years and regions in both species. Detection frequency in symptomatic animals was significantly higher during IKC outbreaks than in nonepidemic situations (i.e., regular but low incidence or sporadic occurrence). Mycoplasma load was significantly lower in eyes from healthy carriers and animals with mild signs than from animals with moderate and severe signs. Although some strains were found in both asymptomatic and diseased animals of the same species, others apparently differed in their pathogenic potential depending on the infected species. Overall, we found a widespread occurrence of M. conjunctivae in wild Caprinae with and without IKC signs. Our results confirm the central role of M. conjunctivae in outbreaks but suggest that other infectious agents may be involved in IKC cases in nonepidemic situations. Additionally, presence and severity of signs are related to the quantity of M. conjunctivae in the eyes rather than to the strain. We propose that individual or environmental factors influence the clinical expression of the disease and that persistence of M. conjunctivae in populations of wild Caprinae cannot be excluded. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/15462 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | Life Sciences und Facility Management |
| Organisationseinheit: | Institut für Umwelt und Natürliche Ressourcen (IUNR) |
| Enthalten in den Sammlungen: | Publikationen Life Sciences und Facility Management |
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Mavrot, F., Vilei, E. M., Marreros, N., Signer, C., Frey, J., & Ryser-Degiorgis, M.-P. (2012). Occurrence, quantification, and genotyping of Mycoplasma conjunctivae in wild Caprinae with and without infectious keratoconjunctivitis. Journal of Wildlife Diseases, 48(3), 619–631. https://doi.org/10.7589/0090-3558-48.3.619
Mavrot, F. et al. (2012) ‘Occurrence, quantification, and genotyping of Mycoplasma conjunctivae in wild Caprinae with and without infectious keratoconjunctivitis’, Journal of Wildlife Diseases, 48(3), pp. 619–631. Available at: https://doi.org/10.7589/0090-3558-48.3.619.
F. Mavrot, E. M. Vilei, N. Marreros, C. Signer, J. Frey, and M.-P. Ryser-Degiorgis, “Occurrence, quantification, and genotyping of Mycoplasma conjunctivae in wild Caprinae with and without infectious keratoconjunctivitis,” Journal of Wildlife Diseases, vol. 48, no. 3, pp. 619–631, 2012, doi: 10.7589/0090-3558-48.3.619.
MAVROT, Fabien, Edy M. VILEI, Nelson MARREROS, Claudio SIGNER, Joachim FREY und Marie-Pierre RYSER-DEGIORGIS, 2012. Occurrence, quantification, and genotyping of Mycoplasma conjunctivae in wild Caprinae with and without infectious keratoconjunctivitis. Journal of Wildlife Diseases. 2012. Bd. 48, Nr. 3, S. 619–631. DOI 10.7589/0090-3558-48.3.619
Mavrot, Fabien, Edy M. Vilei, Nelson Marreros, Claudio Signer, Joachim Frey, and Marie-Pierre Ryser-Degiorgis. 2012. “Occurrence, Quantification, and Genotyping of Mycoplasma Conjunctivae in Wild Caprinae with and without Infectious Keratoconjunctivitis.” Journal of Wildlife Diseases 48 (3): 619–31. https://doi.org/10.7589/0090-3558-48.3.619.
Mavrot, Fabien, et al. “Occurrence, Quantification, and Genotyping of Mycoplasma Conjunctivae in Wild Caprinae with and without Infectious Keratoconjunctivitis.” Journal of Wildlife Diseases, vol. 48, no. 3, 2012, pp. 619–31, https://doi.org/10.7589/0090-3558-48.3.619.
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