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Blake L, Jordan AB, Nicholls S, Soto E, Iwanowicz L, Suepaul R, Oura C, Phillips Savage ACN. Identification of Potentially Novel Mycobacterium Spp. In Freshwater Ornamental Fish in Trinidad and Tobago. JOURNAL OF FISH DISEASES 2025; 48:e14079. [PMID: 39777693 DOI: 10.1111/jfd.14079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2024] [Revised: 12/12/2024] [Accepted: 12/20/2024] [Indexed: 01/11/2025]
Abstract
Potentially zoonotic Mycobacterium spp. are impacting freshwater ornamental fish in Trinidad and Tobago. Clinical cases presented at the Aquatic Animal Health Unit of The University of the West Indies, School of Veterinary Medicine, from September 2011 to September 2018 indicated the presence of piscine mycobacteriosis in freshwater ornamental fish from locations throughout Trinidad and Tobago. Subsequently, an investigation was conducted from June 2018 to December 2021 to identify the specific Mycobacterium spp. involved. Nested polymerase chain reaction (PCR) was used to amplify and later sequence the 723 bp of the rpoB. Analysis of region V of the rpoB offers similar discriminatory power as concatenation or whole genome analysis of Mycobacterium spp., and serves as an acceptable method for differentiating and discriminating between species in this genus. With respect to tank-reared freshwater ornamental fish, this study identified M. fortuitum (98.8% identity), M. liflandii (100% identity), M. stomatepiae (97.2% identity), M. pseudoshottsii related (96.9% identity), two M. stomatepiae related (95.4% and 96.7% identity), M. immunogenum related (93.4% identity), and 17 M. insubricum related (91.4%-95.2% identity). Additionally, seven mycobacteria related to M. insubricum were identified in wild-caught guppies. These findings suggest that both known, and potentially novel Mycobacterium spp. are circulating, and adversely impacting the local populations of freshwater ornamental fish in Trinidad and Tobago.
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Affiliation(s)
- Lemar Blake
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, W.I, Trinidad and Tobago
| | - Arianne Brown Jordan
- Department of Para-Clinical Sciences, Biochemistry Unit, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, W.I, Trinidad and Tobago
| | - Soren Nicholls
- Department of Para-Clinical Sciences, Biochemistry Unit, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, W.I, Trinidad and Tobago
| | - Esteban Soto
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, California, USA
| | - Luke Iwanowicz
- U.S. Department of Agriculture/Agricultural Research Service, National Center for Cool and Cold Water Aquaculture, Leetown, West Virginia, USA
| | - Rod Suepaul
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, W.I, Trinidad and Tobago
| | - Christopher Oura
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, W.I, Trinidad and Tobago
| | - Ayanna Carla N Phillips Savage
- Department of Clinical Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, W.I, Trinidad and Tobago
- Department of Population Health Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
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Janda JM. Proposed nomenclature or classification changes for bacteria of medical importance: taxonomic update 5. Diagn Microbiol Infect Dis 2020; 97:115047. [PMID: 32321664 DOI: 10.1016/j.diagmicrobio.2020.115047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 01/23/2023]
Abstract
A key aspect of medical, public health, and diagnostic microbiology laboratories is the accurate identification and rapid reporting and communication to medical staff regarding patients with infectious agents of clinical importance. Microbial taxonomy continues to change at a very rapid rate in the era of molecular diagnostics including whole genome sequencing. This update focuses on taxonomic changes and proposals that may be of medical importance from 2018 to 2020.
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Affiliation(s)
- J Michael Janda
- Public Health Laboratory, Public Health Services Department, Kern County, Bakersfield, CA 93306-3302.
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