Recovery of Bacillus mycoides,B. pseudomycoides and Aeromonas hydrophila from common carp (Cyprinus carpio) and rainbow trout (Oncorhynchus mykiss) with gill disease |
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| Authors: | P Orozova I Sirakov D A Austin B Austin |
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| Affiliation: | 1. National Reference Laboratory for Fish, Molluscs and Crustacean Diseases, National Diagnostic Science and Research Veterinary Medical Institute, Sofia, Bulgaria;2. Department of Microbiology, Medical University ‐ Sofia, Sofia, Bulgaria;3. School of Life Sciences, Heriot‐Watt University, Riccarton, Edinburgh, Scotland, UK;4. Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK |
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| Abstract: | During a 3‐month period from June to the end of August 2016, ~5% mortalities were observed in a farm with rainbow trout (Oncorhynchus mykiss Walbaum) and one farm of common carp (Cyprinus carpio L.) in Bulgaria. The disease was manifested by gill ulcers/rot, asphyxiation and bloody ascites. Aeromonas hydrophila was isolated from the internal organs of all the diseased fish. Bacillus mycoides or B. pseudomycoides were recovered from the gill lesions on diseased carp and rainbow trout, respectively, with identification achieved by conventional phenotyping and by sequencing of the 16S rRNA gene. In vivo experiments confirmed that all three organisms were pathogenic to rainbow trout. |
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| Keywords: |
Aeromonas hydrophila
B pseudomycoides
Bacillus mycoides
co‐infection gill disease |
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