Francisellosis in ornamental African cichlids in Austria
| Autor: | Lewisch, E., Dressier, A., Simon Menanteau-Ledouble, Saleh, M., El-Matbouli, M. |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Zdroj: | Lewisch, E, Dressier, A, Menanteau-Ledouble, S, Saleh, M & El-Matbouli, M 2014, ' Francisellosis in ornamental African cichlids in Austria ', Bulletin of the European Association of Fish Pathologists, vol. 34, no. 2, pp. 63-70 . Scopus-Elsevier |
| Popis: | While bacteria of the genus Francisella have been reported for many years in association with diseases and mortalities in farmed fish, they have yet to be recognised as a threat to ornamental fish. Here, we describe the isolation of Francisella noatunensis subsp. orientalis that was found to be associated with sporadic mortalities over the course of several years in various ornamental Malawi cichlids from an Austrian breeding facility. The fish displayed unspecific external clinical signs including anorexia, dyspnea, and abdominal distension, quickly followed by death. Pathoanatomical and histological examination revealed an enlarged spleen, pale viscera and ascites, and, in some cases, granulomas, predominantly in the spleen. DNA extracted from different tissues was sequenced and subsequent Blast alignment showed a 99% level of homology with F. noatunensis subsp. orientalis. Culture of this fastidious bacterium was performed on a modified cystein heart agar. Until now, F. noatunensis subsp. orientalis had not been described in relationship with disease and mortality in ornamental fish. Considering the worldwide trade with ornamental African cichlids and the difficulties of diagnosing this disease by routine examination, it seems likely that francisellosis might be widely distributed and its prevalence underestimated. |
| Databáze: | OpenAIRE |
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