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Duman M, Satıcıoğlu IB, Janda JM. A Review of the Industrial Importance, Common Bacterial Diseases, and Zoonotic Risks of Freshwater Aquarium Fish. Vector Borne Zoonotic Dis 2024; 24:69-85. [PMID: 38133524 DOI: 10.1089/vbz.2023.0094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Background: The ever-increasing popularity of home aquariums, most often involving freshwater varieties, has exploded in recent years partially due to the Coronavirus pandemic and related to stay-at-home public health precautions for social distancing. With this ever-increasing popularity of aquariums as a hobby, and whether this involves freshwater or marine fish species, a number of important economic, ecological, and public health issues arise for both fish and hobbyists alike. Materials and Methods: This review highlights the history and genesis of aquariums as both a hobby and an important economic factor (industrial, commercial) for many countries on a global basis. Types of aquarium fish are described, and culture conditions leading to homeostasis in aquatic environments are detailed. When these conditions are not met and aquatic systems are out of balance, the disease can result due to stressed fish. Results: Major bacterial diseases associated with freshwater aquarium fish are reviewed, as are potential human infections related to the care and maintenance of home aquaria. Conclusion: Besides, scientific information was also combined with the false facts of hobbyists who tried to identify and treat diseases during an outbreak in the aquarium. Finally, unresolved issues and important misconceptions regarding the field are discussed.
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Affiliation(s)
- Muhammed Duman
- Aquatic Animal Disease Department, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Izzet Burçin Satıcıoğlu
- Aquatic Animal Disease Department, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - J Michael Janda
- Department of Public Health Services, Kern County, Bakersfield, California, USA
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Au-Yeung C, Lam KL, Chan KW, Mo WY. Uses of Antibiotics in Ornamental Fish in Hong Kong and the Antibiotic Resistance in the Associated Zoonotic Pathogens. J Xenobiot 2022; 12:365-377. [PMID: 36547470 PMCID: PMC9783315 DOI: 10.3390/jox12040026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/20/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
The use of antibiotics in ornamental fish is not regulated, as they are not intended for human consumption. Although antibiotic resistant bacteria have been detected in ornamental fish worldwide, there have been no studies to look at the situation in Hong Kong. Therefore, the present study was conducted to investigate the use of antibiotics in ornamental fish. Ornamental fish were purchased from five local pet fish shops and the antibiotics in carriage water were quantified using liquid chromatography tandem mass spectrometry. Moreover, Aeromonas and Pseudomonas spp. present in carriage water were isolated and their minimum inhibitory concentrations against selected antibiotics were determined. Results indicated that among the twenty antibiotics screened, doxycycline (0.0155-0.0836 µg L-1), oxytetracycline (0.0102-29.0 µg L-1), tetracycline (0.0350-0.244 µg L-1), enrofloxacin (0.00107-0.247 µg L-1), and oxalinic acid (n.d.-0.514 µg L-1) were detected in all sampled shops. Additionally, MIC results revealed that some of the Aeromonas and Pseudomonas spp. isolates were highly resistant to all antibiotics selected. Our findings confirmed that multiple antibiotics are being used in ornamental fish and the associated bacteria are resistant to selected antibiotics, suggesting that this could be a significant transmission route of antibiotic resistant bacteria to household indoor environments.
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Guilder J, Copp GH, Thrush MA, Stinton N, Murphy D, Murray J, Tidbury HJ. Threats to UK freshwaters under climate change: Commonly traded aquatic ornamental species and their potential pathogens and parasites. NEOBIOTA 2022. [DOI: 10.3897/neobiota.76.80215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The aquatic ornamental industry, whilst providing socio-economic benefits, is a known introduction pathway for non-native species, which if invasive, can cause direct impacts to native species and ecosystems and also drive disease emergence by extending the geographic range of associated parasites and pathogens and by facilitating host-switching, spillover and spill-back. Although current UK temperatures are typically below those necessary for the survival and establishment of commonly-traded tropical, and some sub-tropical, non-native ornamental species, the higher water temperatures predicted under climate-change scenarios are likely to increase the probability of survival and establishment. Our study aimed primarily to identify which of the commonly-traded non-native ornamental aquatic species (fish and invertebrates), and their pathogens and parasites, are likely to benefit in terms of survival and establishment in UK waters under predicted future climate conditions. Out of 233 ornamental species identified as traded in the UK, 24 were screened, via literature search, for potential parasites and pathogens (PPPs) due to their increased risk of survival and establishment under climate change. We found a total of 155 PPPs, the majority of which were platyhelminths, viruses and bacteria. While many of the identified PPPs were already known to occur in UK waters, PPPs currently absent from UK waters and with zoonotic potential were also identified. Results are discussed in the context of understanding potential impact, in addition to provision of evidence to inform risk assessment and mitigation approaches.
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Varela K, Brown JA, Lipton B, Dunn J, Stanek D, Behravesh CB, Chapman H, Conger TH, Vanover T, Edling T, Holzbauer S, Lennox AM, Lindquist S, Loerzel S, Mehlenbacher S, Mitchell M, Murphy M, Olsen CW, Yager CM. A Review of Zoonotic Disease Threats to Pet Owners: A Compendium of Measures to Prevent Zoonotic Diseases Associated with Non-Traditional Pets: Rodents and Other Small Mammals, Reptiles, Amphibians, Backyard Poultry, and Other Selected Animals. Vector Borne Zoonotic Dis 2022; 22:303-360. [PMID: 35724316 PMCID: PMC9248330 DOI: 10.1089/vbz.2022.0022] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Kate Varela
- One Health Office, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Jennifer A. Brown
- National Association of State Public Health Veterinarians
- Indiana Department of Health
| | - Beth Lipton
- National Association of State Public Health Veterinarians
- Seattle & King County Public Health
| | - John Dunn
- National Association of State Public Health Veterinarians
- Tennessee Department of Health
| | - Danielle Stanek
- National Association of State Public Health Veterinarians
- Florida Department of Health
| | | | - Helena Chapman
- Division of Infectious Diseases and Global Medicine, University of Florida College of Medicine
- American Association for the Advancement of Science at NASA Applied Sciences
| | - Terry H. Conger
- U.S. Department of Agriculture Animal (USDA) and Plant Health Inspection Service (APHIS) Veterinary Services
| | | | | | - Stacy Holzbauer
- Minnesota Department of Health
- CDC Preparedness and Response Career Epidemiology Field Officer Program
| | | | | | | | | | - Mark Mitchell
- Louisiana State University School of Veterinary Medicine, Veterinary Clinical Sciences
| | - Michael Murphy
- Food and Drug Administration Center for Veterinary Medicine
| | - Christopher W. Olsen
- AVMA Council on Public Health
- Department of Pathobiological Sciences, University of Wisconsin-Madison School of Veterinary Medicine
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Ziarati M, Zorriehzahra MJ, Hassantabar F, Mehrabi Z, Dhawan M, Sharun K, Emran TB, Dhama K, Chaicumpa W, Shamsi S. Zoonotic diseases of fish and their prevention and control. Vet Q 2022; 42:95-118. [PMID: 35635057 PMCID: PMC9397527 DOI: 10.1080/01652176.2022.2080298] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Fish and aquatic-derived zoonotic diseases have caused considerable problems in the aquaculture industry and fishery worldwide. In particular, zoonotic diseases can pose widespread threats to humans. With the world’s growing population and potential global trade of aquaculture and fish, the risk of environmental contamination and development of fish and aquatic-derived zoonoses in humans are increasing. The important causes of zoonoses include bacteria, parasites, viruses, and fungi. The zoonotic bacterial agents are divided into two main groups: Gram-positive (Mycobacteriaceae, Streptococcaceae, Erysipelothricaceae families) and Gram-negative (Aeromonadaceae, Vibrionaceae, Pseudomondaceae, Enterobacteriaceae, and Hafniaceae families). The premier parasitic agents include cestodes (tapeworm; e.g. Diphyllobothrium spp.), trematodes (fluke; e.g. Opisthorchis spp.), and nematodes (round worm; e.g. Anisakis spp.). In addition, protozoan organisms such as Cryptosporidium spp. are also considered fish-derived zoonotic pathogens. Two groups of fish-associated fungi causing basidiobolomycosis and sporotrichosis also pose a zoonotic risk for humans. The majority of the fish-derived zoonotic diseases are transmitted to humans mainly via the consumption of improperly cooked or raw fish or fish products. Therefore, the incidence of zoonotic diseases can be reduced by properly processing fish and fish products, e.g. by thermal (heat/freezing) treatment. The prevalence of zoonotic agents in fishes varies seasonally and should be regularly monitored to evaluate the prevalence of pathogens in both wild and cultured fish populations. This review focuses on the fish zoonotic agents/diseases and their control and prevention.
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Affiliation(s)
- Mina Ziarati
- Department of Microbiology, Jahrom Branch, Islamic Azad University, Jahrom, I.R. Iran
| | - Mohammad Jalil Zorriehzahra
- Department of Scientific Information and Communication, Iranian Fisheries Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, I.R. Iran
| | - Fatemeh Hassantabar
- Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural Sciences and Natural Resources University Sari, I.R. Iran
| | | | - Manish Dhawan
- Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, India
- The Trafford Group of Colleges, Manchester WA14 5PQ, United Kingdom
| | - Khan Sharun
- Division of Surgery, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Wanpen Chaicumpa
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Shokoofeh Shamsi
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia
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Silveira T, Kütter MT, Martins CMG, Marins LF, Boyle RT, Campos VF, Remião MH. First Record of Clinostomum sp. (Digenea: Clinostomidae) in Danio rerio (Actinopterygii: Cyprinidae) and the Implication of Using Zebrafish from Pet Stores on Research. Zebrafish 2021; 18:139-148. [PMID: 33656385 DOI: 10.1089/zeb.2020.1950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Many scientific studies still use zebrafish from pet stores as animal models, even cutting-edge researches. However, these animals differ genotypically and phenotypically between them. The importance of the use of standardized models is widely recognized. Besides that, another consequence of using zebrafish from unknown origins is the acquisition of parasitized animals. This study aimed to relate the infection by Clinostomum sp. in zebrafish. Animals sold as "high standard" were acquired from a commercial company. Swimming alterations and superficial yellow dots were observed in five zebrafish with clinical signs, which were isolated, euthanized, and necropsied. Muscular yellow cysts with metacercaria associated with lesions were observed. The muscular cysts were responsible for the superficial yellow dots as well as the swimming alterations. The prevalence was 2.5%, and the mean infection intensity was 7 digeneans/host. The cysts measured a mean of 1251.43 μm long × 784.28 μm wide. Metacercariae measured a mean of 4847 μm long × 1353 μm wide. This first report about infection by Clinostomum sp. in zebrafish is globally relevant since the host and the parasite genus currently overlap worldwide. Furthermore, this study sheds light on the importance of the specific pathogen-free commercial creations or laboratory-reared zebrafish for research.
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Affiliation(s)
- Tony Silveira
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Mateus T Kütter
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Camila M G Martins
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Luis Fernando Marins
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Robert T Boyle
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Vinicius F Campos
- Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas-UFPEL, Capão do Leão, Brazil
| | - Mariana H Remião
- Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas-UFPEL, Capão do Leão, Brazil
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Ibrahim A, Hassan D, Kelany N, Kotb S, Soliman M. Validation of Three Different Sterilization Methods of Tilapia Skin Dressing: Impact on Microbiological Enumeration and Collagen Content. Front Vet Sci 2020; 7:597751. [PMID: 33426019 PMCID: PMC7785820 DOI: 10.3389/fvets.2020.597751] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/02/2020] [Indexed: 11/13/2022] Open
Abstract
Tilapia fish skin has demonstrated promise as a stable and practical biological dressing to be used in wound and burn management. However, the appropriate sterilization technique of the Tilapia fish skin is crucial before its clinical application. The standard sterilization technique must eliminate harmful pathogens but maintain the structural and biochemical properties that could compromise the dressing function. This study investigated and compared the efficiency of three sterilizing agents; chlorhexidine gluconate 4% (CHG), povidone iodine 10% (PVP-I), and silver nanoparticles (25 μg/mL) (AgNPs), at three different times (5, 10, and 15 min) on Tilapia fish skin based on the microbial count, histological and collagen properties. Among the sterilization procedures, AgNPs showed rapid and complete antimicrobial activity, with a 100% reduction in microbial growth of the fish skin throughout the treated times. Furthermore, AgNPs did not impair the cellular structure or collagen fibers content of the fish skin. However, CHG and PVP-I caused alterations in the collagen content. This study demonstrated that the AgNPs treatment of Tilapia fish skin provided sterile skin while preserving the histological properties and structural integrity. These findings provide an efficient and quick sterilization method suitable for Tilapia fish skin that could be adopted as a biological dressing.
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Affiliation(s)
- Ahmed Ibrahim
- Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Dalia Hassan
- Department of Animal and Poultry Hygiene, and Environmental Sanitation, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Noura Kelany
- Department of Animal and Poultry Hygiene, and Environmental Sanitation, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Saber Kotb
- Department of Animal and Poultry Hygiene, and Environmental Sanitation, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Mahmoud Soliman
- Department of Veterinary Pathology and Clinical Pathology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt.,Laboratory of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
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Compri M, Mader R, Mazzolini E, de Angelis G, Mutters NT, Babu Rajendran N, Galia L, Tacconelli E, Schrijver R. White Paper: Bridging the gap between surveillance data and antimicrobial stewardship in the animal sector-practical guidance from the JPIAMR ARCH and COMBACTE-MAGNET EPI-Net networks. J Antimicrob Chemother 2020; 75:ii52-ii66. [PMID: 33280048 PMCID: PMC7719408 DOI: 10.1093/jac/dkaa429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The JPIAMR ARCH and COMBACTE-MAGNET EPI-Net networks have joined efforts to formulate a set of target actions to link the surveillance of antimicrobial usage (AMU) and antimicrobial resistance (AMR) with antimicrobial stewardship (AMS) activities in four different settings. This White Paper focuses on the veterinary setting and embraces the One Health approach. METHODS A review of the literature was carried out addressing research questions in three areas: AMS leadership and accountability; AMU surveillance and AMS; and AMR surveillance and AMS. Consensus on target actions was reached through a RAND-modified Delphi process involving over 40 experts in infectious diseases, clinical microbiology, AMS, veterinary medicine and public health, from 18 countries. RESULTS/DISCUSSION Forty-six target actions were developed and qualified as essential or desirable. Essential actions included the setup of AMS teams in all veterinary settings, building government-supported AMS programmes and following specific requirements on the production, collection and communication of AMU and AMR data. Activities of AMS teams should be tailored to the local situation and capacities, and be linked to local or national surveillance systems and infection control programmes. Several research priorities were also identified, such as the need to develop more clinical breakpoints in veterinary medicine. CONCLUSIONS This White Paper offers a practical tool to veterinary practitioners and policy makers to improve AMS in the One Health approach, thanks to surveillance data generated in the veterinary setting. This work may also be useful to medical doctors wishing to better understand the specificities of the veterinary setting and facilitate cross-sectoral collaborations.
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Affiliation(s)
- Monica Compri
- Infectious Diseases Section, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Rodolphe Mader
- University of Lyon, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Lyon, Antimicrobial Resistance and Bacterial Virulence Unit, Lyon, France
| | - Elena Mazzolini
- Department of Epidemiology, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, Italy
| | - Giulia de Angelis
- Dipartimento di Scienze Biotecnologiche di base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Nico T Mutters
- Institute for Hygiene and Public Health, Bonn University Hospital, Bonn, Germany
| | - Nithya Babu Rajendran
- Infectious Diseases, Department of Internal Medicine I, Tübingen University Hospital, Tübingen, Germany
- German Centre for Infection Research (DZIF), Clinical Research Unit for healthcare associated infections, Tübingen, Germany
| | - Liliana Galia
- Infectious Diseases Section, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Evelina Tacconelli
- Infectious Diseases Section, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
- Infectious Diseases, Department of Internal Medicine I, Tübingen University Hospital, Tübingen, Germany
- German Centre for Infection Research (DZIF), Clinical Research Unit for healthcare associated infections, Tübingen, Germany
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9
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Main bacterial species causing clinical disease in ornamental freshwater fish in Brazil. Folia Microbiol (Praha) 2020; 66:231-239. [PMID: 33185813 DOI: 10.1007/s12223-020-00837-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 11/05/2020] [Indexed: 10/23/2022]
Abstract
Bacterial diseases are common in ornamental fish, more frequently associated with ubiquitous bacteria from the aquarium environment. The disease can lead to fish mortality and cause high economic losses if not rapidly controlled. The aim of this study was to identify the main causative bacterial agents of infection in ornamental fish with different clinical signs. A total of 126 freshwater fish, from 12 families and 38 species, with clinical signs were collected in a wholesaler in São Paulo, SP, Brazil. Samples were taken from the eye, skin ulcers, kidneys, and gills, plated on MacConkey, CHROMagar Orientation, and blood agar and incubated under aerobic and anaerobic conditions. Bacterial identification was performed by MALDI-TOF mass spectrometry. From the 126 studied animals, 112 were positive for bacterial isolation. Among the positive animals, 32.1% presented infection caused by a single bacterial species, while in the remaining 67.9%, two to six different bacterial species were identified. A total of 259 bacterial strains were obtained and classified among 46 bacterial species. The species of higher frequency were Aeromonas veronii (26.3%), Aeromonas hydrophilla (16.2%), Shewanella putrefaciens (7.3%), Citrobacter freundii (8.1%), Vibrio albensis (5.8%), and Klebsiella pneumoniae (4.2%). MALDI-TOF MS showed to be a rapid method for diagnosis of bacterial disease outbreaks in ornamental fish establishments.
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10
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Cheok YY, Puah SM, Chua KH, Tan JAMA. Isolation and molecular identification of Aeromonas species from the tank water of ornamental fishes. Acta Vet Hung 2020; 68:130-139. [PMID: 33055305 DOI: 10.1556/004.2020.00029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/09/2020] [Indexed: 11/19/2022]
Abstract
Aeromonads are recognised as important pathogens of fishes. In this study, ten water samples were randomly collected from pet shops' fish tanks and home aquaria inhabited by several fish species (silver arowana, koi, goldfish, catfish, pictus fish, silver shark and silver dollar fish). Altogether 298 colonies were isolated using Aeromonas selective agar. A total of 154 isolates were then confirmed as belonging to the genus Aeromonas using the GCAT gene. Using ERIC-PCR, a total of 40 duplicate isolates were excluded from the study and 114 isolates were subjected to PCR-RFLP targeting the RNA polymerase sigma factor (rpoD) gene using lab-on-chip. A total of 13 different Aeromonas species were identified. The most prevalent species were A. veronii (27%, 31/114), followed by A. dhakensis (17%, 19/114), A. finlandiensis (9%, 10/114), A. caviae (8%, 9/114), A. hydrophila (4%, 4/114), A. jandaei (4%, 4/114), A. rivuli (3%, 3/114), A. enteropelogens (2%, 2/114), A. tecta (2%, 2/114), A. allosaccharophila (1%, 1/114), A. eucrenophila (1%, 1/114), A. media (1%, 1/114) and A. diversa (1%, 1/114). Twenty-six isolates (23%) were unidentifiable at species level. The present study demonstrates that Aeromonas species are highly diverse in freshwater fish tanks, and suggests the potential risks posed by the isolated bacteria to the health of ornamental fish species.
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Affiliation(s)
- Yi Ying Cheok
- 1Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Suat Moi Puah
- 1Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Kek Heng Chua
- 1Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia
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12
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Preena PG, Arathi D, Raj NS, Arun Kumar TV, Arun Raja S, Reshma RN, Raja Swaminathan T. Diversity of antimicrobial-resistant pathogens from a freshwater ornamental fish farm. Lett Appl Microbiol 2019; 71:108-116. [PMID: 31602688 DOI: 10.1111/lam.13231] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/04/2019] [Accepted: 10/06/2019] [Indexed: 12/01/2022]
Abstract
The indiscriminate use of antimicrobials in aquaculture results in antibiotic selection pressure and proliferation of antimicrobial resistant (AMR) bacteria. Frequent assessment of antimicrobial resistance in aquaculture environment is inevitable so as to reduce the passage of clinically important AMR from aquatic to other environment. The present study analysed the antimicrobial resistance of pathogens associated with diseased koi carp and goldfish from an ornamental fish farm. Phenotypic and genotypic characterization of the recovered isolates from both fishes revealed significant pathogens in aquaculture such as Aeromonas, Edwardsiella tarda, Acinetobacter, Lactococcus, Citrobacter, Enterobacter and Comamonas. Shannon-Wiener diversity of koi isolates (2·359) was found to be higher than that of goldfish (1·864). Antibiotic susceptibility testing using disc diffusion with 47 antibiotics revealed significant resistance pattern of Acinetobacter, Comamonas, Klebsiella and Enterobacter from goldfish and Edwardsiella, Aeromonas, Lactococcus, Enterobacter and Acinetobacter from koi with higher multiple antibiotic resistance indexes (>0·3). The minimum inhibitory concentration of antibiotics for the major resistant isolates was found to be very high with >256 μg. All the isolates were susceptible to amoxicillin, kanamycin, cefepime, cefexime, cefotaxime, ceftazidime, doripenem, ciprofloxacin and norfloxacin, recommending their successful application in the farm. SIGNIFICANCE AND IMPACT OF THE STUDY: Antimicrobial resistance is a major threat faced in aquaculture industry. The current study provides baseline information regarding the antibiotic resistance patterns of diverse pathogens recovered from ornamental koi carp and goldfish. The higher MAR index of pathogens and greater MIC of antibiotics for the resistant isolates highlighted the intense use of antibiotics in aquaculture farm. The potential of the pathogens to exhibit resistance even towards the new generation antibiotics remind the need of prudent use of antibiotics and continuous monitoring and surveillance programmes.
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Affiliation(s)
- P G Preena
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
| | - D Arathi
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
| | - N Sundar Raj
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
| | - T V Arun Kumar
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
| | - S Arun Raja
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
| | - R N Reshma
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
| | - T Raja Swaminathan
- Peninsular and Marine Fish Genetic Resources Centre of ICAR-NBFGR, Kochi, India
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13
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Stimulated Growth and Innate Immunity in Brook Charr ( Salvelinus fontinalis) Treated with a General Probiotic (Bactocell ®) and Two Endogenous Probiotics That Inhibit Aeromonas salmonicida In Vitro. Microorganisms 2019; 7:microorganisms7070193. [PMID: 31284626 PMCID: PMC6681104 DOI: 10.3390/microorganisms7070193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/02/2019] [Accepted: 07/05/2019] [Indexed: 11/17/2022] Open
Abstract
Aeromonas salmonicida subsp. salmonicida is a Gram-negative bacterium causing furunculosis, an opportunistic infection of farmed salmonid fish. Current treatment methods against furunculosis rely heavily on antibiotherapy. However, strains of this opportunistic fish pathogen were found to possess genes that confer resistance to major antibiotics including those used to cure furunculosis. Therefore, dispensing bacterial symbionts as probiotics to susceptible hosts appears to be a promising alternative. Here, we present the genomic characterization and in vivo safety assessment of two brook charr (Salvelinus fontinalis) bacterial symbionts that inhibited A. salmonicida subsp. salmonicida growth in vitro (Pseudomonas fluorescens ML11A and Aeromonas sobria TM18) as well as a commercialized probiotic, Pediococcus acidilactici MA18/5M (Bactocell®). The genomic sequences of ML11A and TM18 obtained by whole-genome shotgun sequencing lack key virulence factor genes found in related pathogenic strains. Their genomic sequences are also devoid of genes involved in the inactivation (or target modification of) several key antimicrobial compounds used in salmonid aquaculture. Finally, when administered daily to live brook charr fingerlings, ML11A, TM18 and Bactocell® helped improve several physiological condition metrics such as mean body weight, Fulton's condition factor and blood plasma lysozyme activity (an indicator for innate immune activity).
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Antibiotic susceptibility pattern of bacteria isolated from freshwater ornamental fish, guppy showing bacterial disease. Biologia (Bratisl) 2019. [DOI: 10.2478/s11756-019-00261-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Nurul ANA, Muhammad DD, Okomoda VT, Nur AAB. 16S rRNA-Based metagenomic analysis of microbial communities associated with wild Labroides dimidiatus from Karah Island, Terengganu, Malaysia. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2019; 21:e00303. [PMID: 30671359 PMCID: PMC6328009 DOI: 10.1016/j.btre.2019.e00303] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 12/28/2018] [Accepted: 01/03/2019] [Indexed: 02/03/2023]
Abstract
This study was designed to evaluate the bacterial composition of the Labroides dimidiatus and its surrounding water. Fish and carriage water samples were obtained from corals of the Karah Island in Terengganu Malaysia. DNA was extracted and the bacteria communities on the skin mucus and stomach as well as water sample were classified (to family level) using the 16S rRNA-based metagenomics analysis. 1,426,740 amplicon sequence reads corresponding to 508 total operational taxonomic units were obtained from the three metagenomics libraries in this study. The Proteobacteria, Bacteroidetes, Firmicutes, Actinobacteria and Fusobacteria were the most dominant bacterial phyla in all samples. A total of 36 different classes and 132 families were identified, many of which had shared presence in all samples while others were exclusive to different sample. Thirty-three of these were identified as pathogenic zoonotic bacterial. The results obtained indicate a strong influence of host environment on the composition of its microbiota. Knowing the composition of the microbiota is the first step toward exploring proper management of this ornamental fish in captivity.
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Affiliation(s)
- Ashyikin Noor Ahmad Nurul
- School of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Danish-Daniel Muhammad
- School of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Victor Tosin Okomoda
- Department of Fisheries and Aquaculture, University of Agriculture Makurdi, PMB, 2373, Benue State, Nigeria
| | - Ariffin Asma Bt. Nur
- School of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
- Institute of Tropical Aquaculture, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
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Wimalasena SHMP, Pathirana HNKS, Shin GW, De Silva BCJ, Hossain S, Heo GJ. Characterization of Quinolone-Resistant Determinants in Tribe Proteeae Isolated from Pet Turtles with High Prevalence of qnrD and Novel gyrB Mutations. Microb Drug Resist 2018; 25:611-618. [PMID: 30427748 DOI: 10.1089/mdr.2018.0041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Development of antibiotic resistance in bacteria has challenged significantly in both veterinary and human medicine. In this study, we analyzed the potential risk of pet turtles harboring tribe Proteeae as a source of quinolone-resistant determinants, including plasmid-mediated quinolone resistance (PMQR) genes and target gene alterations in the quinolone resistance-determining region (QRDR). Antimicrobial susceptibility of 54 Proteeae isolates against ciprofloxacin, ofloxacin, levofloxacin, and nalidixic acid was examined. The PMQR genes and QRDR alterations were identified using conventional PCR assays and sequencing. Four isolates were resistant to all quinolones tested in this study. Nine isolates showed resistance to nalidixic acid and showed either intermediate resistance or susceptibility to other tested quinolones. All isolates resistant to one or more tested quinolones harbored mutations in gyrB and some also had gyrA and parC mutations. Of 54, 12 Proteeae isolates displayed the novel E466D, N440T, Q411S, and F417L mutations in gyrB. Among the PMQR genes, 41 (76%) isolates harbored the qnrD gene with the highest prevalence, whereas aac(6')Ib-cr, qnrS, qnrA, and qnrB genes were detected in 28 (52%), 9 (17.0%), 7 (13.0%), and 1 (1.9%) study isolates, respectively. The QRDR analysis of selected mutants revealed that increasing quinolone selective pressure led to a predominance of gyrA mutants. All results indicate that a healthy pet turtle can play as a potential reservoir for quinolone-resistant Proteeae, which it might cause public health risk on pet owners.
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Affiliation(s)
| | | | - Gee-Wook Shin
- 2 Bio-Safety Research Institute, College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
| | | | - Sabrina Hossain
- 1 Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - Gang-Joon Heo
- 1 Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
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Sunil V, Harris AW, Sine B, Holt AM, Noseworthy AL, Sider D, Jamieson FB, White S, Johnston C, Spohn O. Investigation of a community cluster of cutaneous Mycobacterium marinum infection, an emerging zoonotic pathogen in aquaculture industry, Haliburton, Kawartha, Pine Ridge District Health Unit, Ontario, Canada, July-August 2015. Zoonoses Public Health 2018; 66:164-168. [PMID: 30144283 DOI: 10.1111/zph.12521] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/04/2018] [Accepted: 08/05/2018] [Indexed: 11/29/2022]
Abstract
In July 2015, a cluster of five suspect cases of clinically diagnosed Mycobacterium marinum (M. marinum) skin infections were reported to the Haliburton, Kawartha, Pine Ridge District Health Unit (HKPRDHU), Ontario, Canada, with two additional cases subsequently identified through case finding. All seven cases presented with cutaneous lesions located on the finger, hand and/or elbow regions typical of M. marinum infection. Specimens were collected by skin biopsy for two of the seven cases; both cases tested positive for M. marinum by molecular detection (hsp65 gene amplification and sequencing), and one was confirmed positive for M. marinum by culture. All seven cases reported handling raw shrimp from an aquaculture facility in the Health Unit's jurisdiction. M. marinum is not a reportable disease in Ontario, and there are no known previous reports of a cluster of M. marinum reported in Ontario, Canada. A cluster investigation working group was struck that included representation from various agencies including Public Health Ontario (PHO), Public Health Ontario Laboratories (PHOL), Ontario Ministry of Agriculture and Rural Affairs (OMAFRA) and the two health units involved in case investigations. Several public health and aquaculture farming recommendations were made to mitigate further risks associated with handling of raw shrimp from the facility. Several challenges were faced during the investigation process. The paper discusses these challenges and public health recommendations made in order to mitigate occupational and public health risks related to the hazard identified.
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Affiliation(s)
- Vidya Sunil
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - Andrew W Harris
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - Bob Sine
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - Anne Marie Holt
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - A Lynn Noseworthy
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - Doug Sider
- Public Health Ontario, Toronto, Ontario, Canada
| | | | - Shelley White
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - Cassandra Johnston
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
| | - Olivia Spohn
- Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Ontario, Canada
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18
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Yezli S, Yassin Y, Mushi A, Maashi F, Aljabri N, Mohamed G, Bieh K, Awam A, Alotaibi B. Knowledge, attitude and practice (KAP) survey regarding antibiotic use among pilgrims attending the 2015 Hajj mass gathering. Travel Med Infect Dis 2018; 28:52-58. [PMID: 30118860 DOI: 10.1016/j.tmaid.2018.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 07/30/2018] [Accepted: 08/14/2018] [Indexed: 11/25/2022]
Abstract
BACKGROUND Overuse and misuse of antibiotics have been reported in Hajj. However, little is known about Knowledge, Attitude and Practice (KAP) of pilgrims themselves in relation to these agents. METHODS Adult pilgrims from seven countries attending the 2015 Hajj were interviewed using a structured KAP questionnaire. RESULTS KAP information was collected from 1476 pilgrims. Misconceptions regarding antibiotics included that they: cure all diseases (24.6%); cure common cold and flu (63.0%); are used to stop fever (47.3%); have no side effects (43.2%). Negative attitudes included prophylactic use (50%), self-medication (43.2%), non-compliance with therapy (63.5%) and storage of left-overs for future use (54.1%). In practice, 87.3% of pilgrims admitted to using non-prescribed antibiotics, only 19.3% use antibiotic as directed by their doctor and 54% do not usually check the expiry date of antibiotics before use. Over 60% brought antibiotics from their home country to KSA and 39.2% acquired non-prescribed antibiotics in Saudi Arabia. KAP scores were higher among the younger age group (≤43 years old) and among those with healthcare-related work or education and increased with increasing levels of education. CONCLUSIONS Multifaceted and multidisciplinary approaches, both in KSA and in pilgrims' countries of origin, are needed to address antibiotic misuse during Hajj.
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Affiliation(s)
- Saber Yezli
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia.
| | - Yara Yassin
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia
| | - Abdulaziz Mushi
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia
| | - Fuad Maashi
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia
| | | | - Gamal Mohamed
- Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Kingsley Bieh
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia
| | - Awam Awam
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia
| | - Badriah Alotaibi
- The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia
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Wimalasena S, De Silva B, Hossain S, Pathirana H, Heo GJ. Prevalence and characterisation of quinolone resistance genes in Aeromonas spp. isolated from pet turtles in South Korea. J Glob Antimicrob Resist 2017; 11:34-38. [DOI: 10.1016/j.jgar.2017.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 05/16/2017] [Accepted: 06/01/2017] [Indexed: 01/30/2023] Open
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20
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Chung TH, Yi SW, Shin GW. Antibiotic resistance and repetitive-element PCR fingerprinting in Aeromonas veronii isolates. JOURNAL OF FISH DISEASES 2017; 40:821-829. [PMID: 27690177 DOI: 10.1111/jfd.12564] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/28/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
This study evaluated antibiotic resistance and the related genes in total 47 Aeromonas veronii isolates from pet fish, eel (Anguilla japonica) and koi (Cyprinus carpio) in Korea. In comparison with the antibiotic susceptibilities of isolates from eel and koi, those of pet fish were more resistant to ceftiofur, aminoglycosides, tetracycline and nitrofurantoin. And isolates from pet fish showed high prevalences of class 1 integron, quinolones and tetracycline resistance determinants than those from eel and koi. Repetitive-element palindromic PCR (rep-PCR) showed larger diversities among A. veronii isolates. Collectively, pet fish may be a reservoir for multiple clones of A. veronii involved in antibiotic resistance. In this aspect, imported fish in the aquaculture trade should be steadily and continually screened for bacterial antibiotic resistance and related genes.
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Affiliation(s)
- T-H Chung
- Department of Animal Science, Joongbu University, Geumsan-gun, Korea
| | - S-W Yi
- Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
| | - G-W Shin
- Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
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21
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Popović NT, Kazazić SP, Strunjak-Perović I, Čož-Rakovac R. Differentiation of environmental aquatic bacterial isolates by MALDI-TOF MS. ENVIRONMENTAL RESEARCH 2017; 152:7-16. [PMID: 27741451 DOI: 10.1016/j.envres.2016.09.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 09/20/2016] [Accepted: 09/24/2016] [Indexed: 05/20/2023]
Abstract
Identification of bacteria in aquatic and environmental applications, for monitoring purposes and research, for health assessments and therapy considerations of farmed and free-living aquatic organisms, still relies on conventional phenotypic and biochemical protocols. Although molecular techniques based on DNA amplification and sequencing are finding ways into diagnostic laboratories, they are time-consuming, costly and difficult in the case of multiplex assays. Matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS) is a rapid and accurate proteomic method reliable for identification of unknown bacteria to the genus and species level. Upon extension of databases, it will certainly find its position in environmental sciences. The paper presents an overview of the principle of the method, its effectiveness in comparison with conventional and molecular identification procedures, and applicability on environmental and aquatic isolates, discussing its advantages and shortcomings, as well as possible future implementations.
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Affiliation(s)
- Natalija Topić Popović
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Rudjer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
| | - Snježana P Kazazić
- Laboratory for Mass Spectrometry, Division of Physical Chemistry, Rudjer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia.
| | - Ivančica Strunjak-Perović
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Rudjer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
| | - Rozelindra Čož-Rakovac
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Rudjer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
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22
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Di Ianni F, Dodi PL, Cabassi CS, Pelizzone I, Sala A, Cavirani S, Parmigiani E, Quintavalla F, Taddei S. Conjunctival flora of clinically normal and diseased turtles and tortoises. BMC Vet Res 2015; 11:91. [PMID: 25889261 PMCID: PMC4397695 DOI: 10.1186/s12917-015-0405-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Accepted: 03/30/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In captive breed turtles and tortoises conjunctival disease is common. Our aim was to investigate the bacterial and fungal flora present in the eyes of healthy and pathological chelonians and to compare findings in turtles with those in tortoises. RESULTS Samples were taken from the conjunctival sacs of 34, diseased and healthy, chelonians (18 tortoises and 16 turtles) and submitted to bacterial and fungal investigation. All samples showed bacterial growth. Thirteen animals (38%), harboured a single bacterial species as sole isolate and twenty-one animals (62%) harboured more than one species. Detection of multiple bacterial infection was clearly greater in tortoises compared to turtles. Most frequently isolated bacterial species were Bacillus spp. (13 isolates), Staphylococcus xylosus (10 isolates), Sphingomonas paucimobilis (6 isolates), Staphylococcus sciuri and Aeromonas hydrophila/caviae (each 5 isolates), Ochrobactrum anthropi (3 isolates), Citrobacter freundii, Enterobacter cloacae and Pseudomonas luteola (each 2 isolates). Only one isolate of Kocuria varians/rosea, Staphylococcus aureus, Staphylococcus auricularis, Staphylococcus haemolyticus, Staphylococcus lentus, Morganella morganii, Pasteurella multocida, Pasteurella pneumotropica/haemolytica, Proteus spp., Pseudomonas putida, Salmonella enterica ssp. arizonae, Stenotrophomonas maltophilia and Vibrio parahaemolyticus was evidenced. The presence in 8 animals of Mycoplasma spp. and in 1 animal with severe conjunctivitis of Chlamydia spp. was detected by PCR. Candida spp. was also isolated from two healthy animals. CONCLUSIONS A clear predominance of Gram positive isolates in tortoises and Gram negative isolates in turtles was found. However, we cannot ascribe the observed difference to the diversity of animal species, as other factors, including especially different characteristics of the living environments, may play a role. Almost all bacterial species isolated may have clinical significance, mostly as opportunistic pathogens, both for humans and animals. That chelonians are often carrier of bacteria with zoonotic potential is a well-known fact, in particular with regard to Salmonella spp. Therefore, it is not surprising the detection of a strain of Salmonella enterica ssp. arizonae in the eye of one of the animals tested. Worthy of note is the finding of Chlamydia spp. in a severe case of conjunctivitis, though we cannot epidemiologically assess a cause-effect relationship between presence of chlamydia and disease.
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Affiliation(s)
- Francesco Di Ianni
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Pier Luigi Dodi
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Clotilde Silvia Cabassi
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Igor Pelizzone
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Andrea Sala
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Sandro Cavirani
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Enrico Parmigiani
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Fausto Quintavalla
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
| | - Simone Taddei
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, via del Taglio 10, 43126, Parma, Italy.
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Labro MT, Bryskier JM. Antibacterial resistance: an emerging ‘zoonosis’? Expert Rev Anti Infect Ther 2014; 12:1441-61. [DOI: 10.1586/14787210.2014.976611] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Gauthier DT. Bacterial zoonoses of fishes: a review and appraisal of evidence for linkages between fish and human infections. Vet J 2014; 203:27-35. [PMID: 25466575 DOI: 10.1016/j.tvjl.2014.10.028] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 10/18/2014] [Accepted: 10/22/2014] [Indexed: 11/24/2022]
Abstract
Human contact with and consumption of fishes presents hazards from a range of bacterial zoonotic infections. Whereas many bacterial pathogens have been presented as fish-borne zoonoses on the basis of epidemiological and phenotypic evidence, genetic identity between fish and human isolates is not frequently examined or does not provide support for transmission between these hosts. In order to accurately assess the zoonotic risk from exposure to fishes in the context of aquaculture, wild fisheries and ornamental aquaria, it is important to critically examine evidence of linkages between bacteria infecting fishes and humans. This article reviews bacteria typically presented as fish-borne zoonoses, and examines the current strength of evidence for this classification. Of bacteria generally described as fish-borne zoonoses, only Mycobacterium spp., Streptococcus iniae, Clostridium botulinum, and Vibrio vulnificus appear to be well-supported as zoonoses in the strict sense. Erysipelothrix rhusiopathiae, while transmissible from fishes to humans, does not cause disease in fishes and is therefore excluded from the list. Some epidemiological and/or molecular linkages have been made between other bacteria infecting both fishes and humans, but more work is needed to elucidate routes of transmission and the identity of these pathogens in their respective hosts at the genomic level.
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Affiliation(s)
- David T Gauthier
- Department of Biological Sciences, Old Dominion University, Norfolk, Virginia 23529, USA.
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25
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Favaro L, Scanzio T, Varello K, Caffara M, Righetti M, Bozzetta E, Prearo M. Mixed mycobacterial infection in an adult koi carp Cyprinus carpio L. JOURNAL OF FISH DISEASES 2014; 37:753-755. [PMID: 23937602 DOI: 10.1111/jfd.12159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 06/28/2013] [Accepted: 06/30/2013] [Indexed: 06/02/2023]
Affiliation(s)
- L Favaro
- Istituto Zooprofilattico Sperimentale del Piemonte Liguria e Valle d'Aosta, Torino, Italy
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Mohammed HH, Arias CR. Epidemiology of columnaris disease affecting fishes within the same watershed. DISEASES OF AQUATIC ORGANISMS 2014; 109:201-211. [PMID: 24991846 DOI: 10.3354/dao02739] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the southeastern USA, columnaris disease (caused by Flavobacterium columnare) typically affects catfish raised in earthen ponds from early spring until late summer. Recently, unusually severe outbreaks of columnaris disease occurred at the E. W. Shell Fisheries Center located in Auburn, AL, USA. During these outbreaks, catfish and other aquaculture and sport fish species that were in ponds located within the same watershed were affected. Our objective was to investigate the genetic diversity among F. columnare isolates recovered from different sites, sources, and dates to clarify the origin of these outbreaks and, ultimately, to better understand the epidemiology of columnaris disease. A total of 102 F. columnare isolates were recovered from catfishes (channel catfish Ictalurus puntactus, blue catfish I. furcatus, and their hybrid), bluegill Lepomis microchirus, Nile tilapia Oreochromis niloticus, largemouth bass Micropterus salmoides, egg masses, and water during columnaris outbreaks (from spring 2010 to summer 2012). Putative F. columnare colonies were identified following standard protocols. All isolates were ascribed to Genomovar II following restriction fragment length polymorphism analysis of the 16S rRNA gene. Genetic variability among the isolates was revealed by amplified fragment length polymorphism. Date of isolation explained most of the variability among our isolates, while host was the least influential parameter, denoting a lack of host specificity within Genomovar II isolates. The susceptibility of each of the isolates against commonly used antibiotics was tested by antibiogram. Our data showed that 19.6 and 12.7% of the isolates were resistant to oxytetracycline and kanamycin, respectively.
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Affiliation(s)
- Haitham H Mohammed
- Aquatic Microbiology Laboratory, School of Fisheries, Aquaculture and Aquatic Sciences, 203 Swingle Hall, Auburn University, Auburn, Alabama 36849, USA
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27
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Draft Genome Sequence of Aeromonas hydrophila Strain Ae34, Isolated from a Septicemic and Moribund Koi Carp (Cyprinus carpio koi), a Freshwater Aquarium Fish. GENOME ANNOUNCEMENTS 2014; 2:2/3/e00572-14. [PMID: 24926056 PMCID: PMC4056299 DOI: 10.1128/genomea.00572-14] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Aeromonas hydrophila is an important opportunistic pathogen that infects a variety of aquatic and terrestrial animals, including humans. We report here the draft genome sequence of A. hydrophila Ae34, a multidrug-resistant isolate from the kidney of a moribund koi carp (Ciprinus carpio koi) with signs of hemorrhagic septicemia.
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28
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Slany M, Makovcova J, Jezek P, Bodnarova M, Pavlik I. Relative prevalence of Mycobacterium marinum in fish collected from aquaria and natural freshwaters in central Europe. JOURNAL OF FISH DISEASES 2014; 37:527-533. [PMID: 23952681 DOI: 10.1111/jfd.12135] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 04/23/2013] [Indexed: 06/02/2023]
Abstract
A survey was carried out on occurrence of Mycobacterium marinum in fish kept in aquaria and those living in their natural environment. Species-specific qPCR targeting the erp and IS2404 genes together with the conventional culture method were used. The analysis of 72 ornamental fish (n = 216 samples: gills, muscle and intestine) collected from aquaria revealed the presence of M. marinum in 30 individuals (41.7%) of whom 17 (23.6%) were later culture positive. Culture-independent detection revealed the presence of M. marinum in 16 of 83 environmental samples (19.3%) collected in aquaria. The presence of viable M. marinum cells was later confirmed in 5 samples (6.0%). No qPCR or culture positivity was observed when 123 groundwater fish and their corresponding environmental samples (n = 142) were analysed.
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Affiliation(s)
- M Slany
- Veterinary Research Institute, Mycobacteriology Unit, O.I.E. Reference laboratories for Paratuberculosis and Avian Tuberculosis, Brno, Czech Republic
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29
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Dobiasova H, Kutilova I, Piackova V, Vesely T, Cizek A, Dolejska M. Ornamental fish as a source of plasmid-mediated quinolone resistance genes and antibiotic resistance plasmids. Vet Microbiol 2014; 171:413-21. [PMID: 24629900 DOI: 10.1016/j.vetmic.2014.02.011] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 02/02/2014] [Accepted: 02/05/2014] [Indexed: 11/17/2022]
Abstract
Growing ornamental fish industry is associated with public health concerns including extensive antibiotic use accompanied by increasing antibiotic resistance. The aim of this study was to analyze Aeromonas isolates from imported tropical ornamental fish and coldwater koi carps bred in the Czech Republic to assess the potential risk of ornamental fish as a source of plasmid-mediated quinolone resistance genes (PMQR) and antibiotic resistance plasmids. A collection of Aeromonas spp. with reduced susceptibility to ciprofloxacin (MIC ≥ 0.05 mg/L) was selected for the detection of PMQR genes. Isolates harbouring PMQR genes were further analyzed for the additional antibiotic resistance, integron content, clonality, biofilm production and transferability of PMQR genes by conjugation and transformation. Comparative analysis of plasmids carrying PMQR genes was performed. Fifteen (19%, n=80) isolates from koi carps and 18 (24%, n=76) isolates from imported ornamental fish were positive for qnrS2, aac(6')-Ib-cr or qnrB17 genes. PMQR-positive isolates from imported ornamental fish showed higher MIC levels to quinolones, multiresistance and diverse content of antibiotic resistance genes and integrons compared to the isolates from the carps. Related IncU plasmids harbouring qnrS2 and aac(6')-Ib-cr genes were found in Aeromonas spp. from imported ornamental fish and koi carps from various geographical areas. Ornamental fish may represent a potential source of multiresistant bacteria and mobile genetic elements for the environment and for humans.
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Affiliation(s)
- Hana Dobiasova
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic; CEITEC VFU, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Iva Kutilova
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic
| | - Veronika Piackova
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Zatisi 728/II, 389 25 Vodnany, Czech Republic
| | - Tomas Vesely
- Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic
| | - Alois Cizek
- CEITEC VFU, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic; Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Monika Dolejska
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic; CEITEC VFU, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1/3, 612 42 Brno, Czech Republic.
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30
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Feehery GR, Yigit E, Oyola SO, Langhorst BW, Schmidt VT, Stewart FJ, Dimalanta ET, Amaral-Zettler LA, Davis T, Quail MA, Pradhan S. A method for selectively enriching microbial DNA from contaminating vertebrate host DNA. PLoS One 2013; 8:e76096. [PMID: 24204593 PMCID: PMC3810253 DOI: 10.1371/journal.pone.0076096] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 08/20/2013] [Indexed: 12/05/2022] Open
Abstract
DNA samples derived from vertebrate skin, bodily cavities and body fluids contain both host and microbial DNA; the latter often present as a minor component. Consequently, DNA sequencing of a microbiome sample frequently yields reads originating from the microbe(s) of interest, but with a vast excess of host genome-derived reads. In this study, we used a methyl-CpG binding domain (MBD) to separate methylated host DNA from microbial DNA based on differences in CpG methylation density. MBD fused to the Fc region of a human antibody (MBD-Fc) binds strongly to protein A paramagnetic beads, forming an effective one-step enrichment complex that was used to remove human or fish host DNA from bacterial and protistan DNA for subsequent sequencing and analysis. We report enrichment of DNA samples from human saliva, human blood, a mock malaria-infected blood sample and a black molly fish. When reads were mapped to reference genomes, sequence reads aligning to host genomes decreased 50-fold, while bacterial and Plasmodium DNA sequences reads increased 8-11.5-fold. The Shannon-Wiener diversity index was calculated for 149 bacterial species in saliva before and after enrichment. Unenriched saliva had an index of 4.72, while the enriched sample had an index of 4.80. The similarity of these indices demonstrates that bacterial species diversity and relative phylotype abundance remain conserved in enriched samples. Enrichment using the MBD-Fc method holds promise for targeted microbiome sequence analysis across a broad range of sample types.
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Affiliation(s)
- George R. Feehery
- New England Biolabs Inc., Ipswich, Massachusetts, United States of America
| | - Erbay Yigit
- New England Biolabs Inc., Ipswich, Massachusetts, United States of America
| | | | | | - Victor T. Schmidt
- The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
| | - Fiona J. Stewart
- New England Biolabs Inc., Ipswich, Massachusetts, United States of America
| | | | - Linda A. Amaral-Zettler
- The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
- Department of Geological Sciences, Brown University, Providence, Rhode Island, United States of America
| | - Theodore Davis
- New England Biolabs Inc., Ipswich, Massachusetts, United States of America
| | | | - Sriharsa Pradhan
- New England Biolabs Inc., Ipswich, Massachusetts, United States of America
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31
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Pruden A, Larsson DJ, Amézquita A, Collignon P, Brandt KK, Graham DW, Lazorchak JM, Suzuki S, Silley P, Snape JR, Topp E, Zhang T, Zhu YG. Management options for reducing the release of antibiotics and antibiotic resistance genes to the environment. ENVIRONMENTAL HEALTH PERSPECTIVES 2013; 121:878-85. [PMID: 23735422 PMCID: PMC3734499 DOI: 10.1289/ehp.1206446] [Citation(s) in RCA: 446] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 05/30/2013] [Indexed: 05/18/2023]
Abstract
BACKGROUND There is growing concern worldwide about the role of polluted soil and water environments in the development and dissemination of antibiotic resistance. OBJECTIVE Our aim in this study was to identify management options for reducing the spread of antibiotics and antibiotic-resistance determinants via environmental pathways, with the ultimate goal of extending the useful life span of antibiotics. We also examined incentives and disincentives for action. METHODS We focused on management options with respect to limiting agricultural sources; treatment of domestic, hospital, and industrial wastewater; and aquaculture. DISCUSSION We identified several options, such as nutrient management, runoff control, and infrastructure upgrades. Where appropriate, a cross-section of examples from various regions of the world is provided. The importance of monitoring and validating effectiveness of management strategies is also highlighted. Finally, we describe a case study in Sweden that illustrates the critical role of communication to engage stakeholders and promote action. CONCLUSIONS Environmental releases of antibiotics and antibiotic-resistant bacteria can in many cases be reduced at little or no cost. Some management options are synergistic with existing policies and goals. The anticipated benefit is an extended useful life span for current and future antibiotics. Although risk reductions are often difficult to quantify, the severity of accelerating worldwide morbidity and mortality rates associated with antibiotic resistance strongly indicate the need for action.
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Affiliation(s)
- Amy Pruden
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia, USA
| | - D.G. Joakim Larsson
- Institute for Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Alejandro Amézquita
- Unilever-Safety & Environmental Assurance Centre, Sharnbrook, United Kingdom
| | - Peter Collignon
- Australian National University, Canberra, Australia
- Canberra Hospital, Canberra, Australia
| | - Kristian K. Brandt
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - David W. Graham
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - James M. Lazorchak
- Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, USA
| | - Satoru Suzuki
- Center for Marine Environmental Studies, Ehime University, Matsuyama, Ehime, Japan
| | - Peter Silley
- MB Consult Limited, Southampton, United Kingdom
- University of Bradford, Bradford, United Kingdom
| | - Jason R. Snape
- AstraZeneca, Brixham Environmental Laboratory, Brixham, United Kingdom
| | - Edward Topp
- Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Tong Zhang
- Department of Civil Engineering, University of Hong Kong, Hong Kong
| | - Yong-Guan Zhu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
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Declercq AM, Boyen F, Van den Broeck W, Bossier P, Karsi A, Haesebrouck F, Decostere A. Antimicrobial susceptibility pattern of Flavobacterium columnare isolates collected worldwide from 17 fish species. JOURNAL OF FISH DISEASES 2013; 36:45-55. [PMID: 22957716 DOI: 10.1111/j.1365-2761.2012.01410.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 04/24/2012] [Accepted: 06/09/2012] [Indexed: 06/01/2023]
Abstract
Flavobacterium columnare is the causative agent of columnaris disease in diverse fish species worldwide. Although columnaris is an important disease, the antimicrobial susceptibility pattern of F. columnare is not well studied. Thus, the purpose of this study was to test the in vitro antimicrobial susceptibility of 97 F. columnare isolates collected worldwide between 1987 and 2011 from 17 fish species. The broth microdilution technique was utilized for reliable testing of these fastidious organisms. None of the isolates displayed acquired resistance to florfenicol, gentamicin, ormetoprim-sulfadimethoxine and trimethoprim-sulfamethoxazole. Acquired resistance to chloramphenicol was detected in 1%, to nitrofuran in 5%, to oxytetracycline in 11% and to enrofloxacin, flumequine and oxolinic acid in 10%, 16% and 16% of the isolates, respectively, as reflected by a bimodal or trimodal distribution of their minimum inhibitory concentrations (MICs). One isolate showed acquired resistance towards several antimicrobial agents including erythromycin. Another isolate revealed acquired resistance towards - amongst others - ampicillin. The isolates displaying acquired resistance originated from ornamental fish species or Vietnamese catfish, except for two isolates coming from wild channel catfish in which acquired resistance was encountered towards oxytetracycline only. Fifty per cent of the resistant isolates from ornamental fish were shown to have acquired resistance against three classes of antimicrobial agents, assigning these isolates as multiple resistant. These data might indicate less prudent use of antimicrobials especially in ornamental fish species.
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Affiliation(s)
- A M Declercq
- Department of Morphology, Ghent University, Merelbeke, Belgium
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33
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Smith KF, Schmidt V, Rosen GE, Amaral-Zettler L. Microbial diversity and potential pathogens in ornamental fish aquarium water. PLoS One 2012; 7:e39971. [PMID: 22970112 PMCID: PMC3435374 DOI: 10.1371/journal.pone.0039971] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 06/05/2012] [Indexed: 12/12/2022] Open
Abstract
Ornamental fishes are among the most popular and fastest growing categories of pets in the United States (U.S.). The global scope and scale of the ornamental fish trade and growing popularity of pet fish in the U.S. are strong indicators of the myriad economic and social benefits the pet industry provides. Relatively little is known about the microbial communities associated with these ornamental fishes or the aquarium water in which they are transported and housed. Using conventional molecular approaches and next generation high-throughput amplicon sequencing of 16S ribosomal RNA gene hypervariable regions, we characterized the bacterial community of aquarium water containing common goldfish (Carassius auratus) and Chinese algae eaters (Gyrinocheilus aymonieri) purchased from seven pet/aquarium shops in Rhode Island and identified the presence of potential pathogens. Our survey identified a total of 30 phyla, the most common being Proteobacteria (52%), Bacteroidetes (18%) and Planctomycetes (6%), with the top four phyla representing >80% of all sequences. Sequences from our water samples were most closely related to eleven bacterial species that have the potential to cause disease in fishes, humans and other species: Coxiella burnetii, Flavobacterium columnare, Legionella birminghamensis, L. pneumophila, Vibrio cholerae, V. mimicus. V. vulnificus, Aeromonas schubertii, A. veronii, A. hydrophila and Plesiomonas shigelloides. Our results, combined with evidence from the literature, suggest aquarium tank water harboring ornamental fish are an understudied source for novel microbial communities and pathogens that pose potential risks to the pet industry, fishes in trade, humans and other species.
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Affiliation(s)
- Katherine F. Smith
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
| | - Victor Schmidt
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
- The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | - Gail E. Rosen
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
- Columbia University Center for Infection and Immunity, Mailman School of Public Health, New York, New York, United States of America
| | - Linda Amaral-Zettler
- The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
- Department of Geological Sciences, Brown University, Providence, Rhode Island, United States of America
- * E-mail:
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Genetic diversity and population structure of Mycobacterium marinum: new insights into host and environmental specificities. J Clin Microbiol 2012; 50:3627-34. [PMID: 22952269 DOI: 10.1128/jcm.01274-12] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Mycobacterium marinum causes a systemic tuberculosis-like disease in fish and skin infections in humans that can spread to deeper structures, resulting in tenosynovitis, arthritis, and osteomyelitis. However, little information is available concerning (i) the intraspecific genetic diversity of M. marinum isolated from humans and animals; (ii) M. marinum genotype circulation in the different ecosystems, and (iii) the link between M. marinum genetic diversity and hosts (humans and fish). Here, we conducted a genetic study on 89 M. marinum isolates from humans (n = 68) and fish (n = 21) by using mycobacterial interspersed repetitive units-variable number of tandem repeats (MIRU-VNTR) typing. The results show that the M. marinum population is genetically structured not only according to the host but also according to the ecosystem as well as to tissue tropism in humans. This suggests the existence of different genetic pools in the function of the biological and ecological compartments. Moreover, the presence of only certain M. marinum genotypes in humans suggests a different zoonotic potential of the M. marinum genotypes. Considering that the infection is linked to aquarium activity, a significant genetic difference was also detected when the human tissue tropism of M. marinum was taken into consideration, with a higher genetic polymorphism in strains isolated from patients with cutaneous forms than from individuals with deeper-structure infection. It appears that only few genotypes can produce deeper infections in humans, suggesting that the immune system might play a filtering role.
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