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Diniz SLP, Oliveira Filho HS, Santos KMOL, Duarte JLC, Oliveira RL, Pierezan F, Armién AG, Leal de Araújo J. Gross, histologic, and ultrastructural features of iridophoromas in Siamese fighting fish ( Betta splendens). Vet Pathol 2024:3009858241281887. [PMID: 39382086 DOI: 10.1177/03009858241281887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
Pigment-containing and light-reflecting cell neoplasms, generically termed chromatophoromas, affect fish, reptiles, and amphibians. Chromatophoromas of light-reflecting cells are named iridophoromas. In this study, we aimed to describe the gross, histologic, and ultrastructural findings of 71 cases of iridophoromas in farmed Siamese fighting fish (Betta splendens). Macroscopically, iridophoromas appeared as whitish, gray, or black friable masses or plaques in the fin, trunk/tail, or head of the fish. Forty-five tumors (63%) were malignant and invaded the adjacent skeletal muscle and/or metastasized to other organs, whereas 26 (37%) tumors were restricted only to the skin, but due to the cytologic similarity to the malignant counterpart, we were not able to classify them as malignant or benign. Sixty-five (91%) tumors were classified as iridophoromas, whereas 6 (8%) were diagnosed as mixed chromatophoromas. Despite immunolabeling for PNL-2, melan A, or S-100 failing to demonstrate antigen expression, ultrastructural analysis identified light-reflecting neoplastic cells, unequivocally confirming iridophoromas as the predominant tumor. The high incidence of iridophoromas in Siamese fighting fish from the same breeding facility, coupled with a higher occurrence in royal blue and fancy copper color patterns and in young males, suggests a potential genetic/hereditary factor in the tumorigenesis of these neoplasms.
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Costa VA, Holmes EC. Diversity, evolution, and emergence of fish viruses. J Virol 2024; 98:e0011824. [PMID: 38785422 PMCID: PMC11237817 DOI: 10.1128/jvi.00118-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024] Open
Abstract
The production of aquatic animals has more than doubled over the last 50 years and is anticipated to continually increase. While fish are recognized as a valuable and sustainable source of nutrition, particularly in the context of human population growth and climate change, the rapid expansion of aquaculture coincides with the emergence of highly pathogenic viruses that often spread globally through aquacultural practices. Here, we provide an overview of the fish virome and its relevance for disease emergence, with a focus on the insights gained through metagenomic sequencing, noting potential areas for future study. In particular, we describe the diversity and evolution of fish viruses, for which the majority have no known disease associations, and demonstrate how viruses emerge in fish populations, most notably at an expanding domestic-wild interface. We also show how wild fish are a powerful and tractable model system to study virus ecology and evolution more broadly and can be used to identify the major factors that shape vertebrate viromes. Central to this is a process of virus-host co-divergence that proceeds over many millions of years, combined with ongoing cross-species virus transmission.
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Affiliation(s)
- Vincenzo A. Costa
- Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Edward C. Holmes
- Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
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3
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Xue S, Liu X, Liu Y, Lu C, Jia L, Yu Y, Liu H, Yang S, Zeng Z, Li H, Qin J, Wang Y, Sun J. Determination and Characterization of Novel Papillomavirus and Parvovirus Associated with Mass Mortality of Chinese Tongue Sole ( Cynoglossus semilaevis) in China. Viruses 2024; 16:705. [PMID: 38793587 PMCID: PMC11125579 DOI: 10.3390/v16050705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 04/28/2024] [Accepted: 04/28/2024] [Indexed: 05/26/2024] Open
Abstract
A massive mortality event concerning farmed Chinese tongue soles occurred in Tianjin, China, and the causative agent remains unknown. Here, a novel Cynoglossus semilaevis papillomavirus (CsPaV) and parvovirus (CsPV) were simultaneously isolated and identified from diseased fish via electron microscopy, virus isolation, genome sequencing, experimental challenges, and fluorescence in situ hybridization (FISH). Electron microscopy showed large numbers of virus particles present in the tissues of diseased fish. Viruses that were isolated and propagated in flounder gill cells (FG) induced typical cytopathic effects (CPE). The cumulative mortality of fish given intraperitoneal injections reached 100% at 7 dpi. The complete genomes of CsPaV and CsPV comprised 5939 bp and 3663 bp, respectively, and the genomes shared no nucleotide sequence similarities with other viruses. Phylogenetic analysis based on the L1 and NS1 protein sequences revealed that CsPaV and CsPV were novel members of the Papillomaviridae and Parvoviridae families. The FISH results showed positive signals in the spleen tissues of infected fish, and both viruses could co-infect single cells. This study represents the first report where novel papillomavirus and parvovirus are identified in farmed marine cultured fish, and it provides a basis for further studies on the prevention and treatment of emerging viral diseases.
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Affiliation(s)
- Shuxia Xue
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Xinrui Liu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Yuru Liu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Chang Lu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Lei Jia
- Tianjin Fishery Institute, Tianjin 300221, China; (L.J.); (Y.Y.); (H.L.)
| | - Yanguang Yu
- Tianjin Fishery Institute, Tianjin 300221, China; (L.J.); (Y.Y.); (H.L.)
| | - Houfu Liu
- Tianjin Fishery Institute, Tianjin 300221, China; (L.J.); (Y.Y.); (H.L.)
| | - Siyu Yang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Zhu Zeng
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Hui Li
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Jiatong Qin
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Yuxuan Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
| | - Jinsheng Sun
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China; (S.X.); (X.L.); (Y.L.); (C.L.); (S.Y.); (Z.Z.); (H.L.); (J.Q.); (Y.W.)
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Blake L, Phillips Savage AC, Soto E, Oura C, Brown-Jordan A, Raines C, Buck CB, Iwanowicz LR. Complete genome sequence of a novel papillomavirus in Siamese fighting fish ( Betta splendens) from Trinidad and Tobago. Microbiol Resour Announc 2024; 13:e0099923. [PMID: 38299841 DOI: 10.1128/mra.00999-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/18/2024] [Indexed: 02/02/2024] Open
Abstract
Here, we announce the complete genome of a previously undescribed papillomavirus from a betta fish, Betta splendens. The genome is 5,671 bp with a GC content of 38.2%. Variants were detected in public databases. This genome is most similar to papillomaviruses that infect sea bass (52.9 % nucleotide identity).
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Affiliation(s)
- Lemar Blake
- The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - A Carla Phillips Savage
- The University of the West Indies, St. Augustine, Trinidad and Tobago
- Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, USA
| | - Esteban Soto
- Department of Medicine and Epidemiology, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Christopher Oura
- The University of the West Indies, St. Augustine, Trinidad and Tobago
| | | | - Clayton Raines
- US Geological Survey, Eastern Ecological Science Center, Kearneysville, West Virginia, USA
| | - Christopher B Buck
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Luke R Iwanowicz
- US Geological Survey, Eastern Ecological Science Center, Kearneysville, West Virginia, USA
- USDA-ARS, National Center for Cool and Cold Water Aquaculture, Kearneysville, West Virginia, USA
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Xi Y, Jiang X, Xie X, Zhao M, Zhang H, Qin K, Wang X, Liu Y, Yang S, Shen Q, Ji L, Shang P, Zhang W, Shan T. Viromics Reveals the High Diversity of Viruses from Fishes of the Tibet Highland. Microbiol Spectr 2023; 11:e0094623. [PMID: 37219423 PMCID: PMC10269613 DOI: 10.1128/spectrum.00946-23] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/09/2023] [Indexed: 05/24/2023] Open
Abstract
Aquaculture is important for food security and nutrition. The economy has recently been significantly threatened and the risk of zoonoses significantly increased by aquatic diseases, and the ongoing introduction of new aquatic pathogens, particularly viruses, continues to represent a hazard. Yet, our knowledge of the diversity and abundance of fish viruses is still limited. Here, we conducted a metagenomic survey of different species of healthy fishes caught in the Lhasa River, Tibet, China, and sampled intestinal contents, gills, and tissues. To be more precise, by identifying and analyzing viral genomes, we aim to determine the abundance, diversity, and evolutionary relationships of viruses in fish with other potential hosts. Our analysis identified 28 potentially novel viruses, 22 of which may be associated with vertebrates, across seven viral families. During our research, we found several new strains of viruses in fish, including papillomavirus, hepadnavirus, and hepevirus. Additionally, we discovered two viral families, Circoviridae and Parvoviridae, which were prevalent and closely related to viruses that infect mammals. These findings further expand our understanding of highland fish viruses and highlight the emerging view that fish harbor large, unknown viruses. IMPORTANCE The economy and zoonoses have recently been significantly threatened by aquatic diseases. Yet, our knowledge of the diversity and abundance of fish viruses is still limited. We identified the wide genetic diversity of viruses that these fish were harboring. Since there are currently few studies on the virome of fish living in the Tibet highland, our research adds to the body of knowledge. This discovery lays the groundwork for future studies on the virome of fish species and other highland animals, preserving the ecological equilibrium on the plateau.
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Affiliation(s)
- Yuan Xi
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xiaojie Jiang
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xinrui Xie
- Animal Science College, Tibet Agriculture and Animal Husbandry University, Nyingchi, Tibet, China
| | - Min Zhao
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Han Zhang
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Kailin Qin
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xiaochun Wang
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yuwei Liu
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Shixing Yang
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Quan Shen
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Likai Ji
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Peng Shang
- Animal Science College, Tibet Agriculture and Animal Husbandry University, Nyingchi, Tibet, China
| | - Wen Zhang
- Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Tongling Shan
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
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Tarján ZL, Doszpoly A, Eszterbauer E, Benkő M. Partial genetic characterisation of a novel alloherpesvirus detected by PCR in a farmed wels catfish (Silurus glanis). Acta Vet Hung 2022; 70:321-327. [PMID: 36469305 DOI: 10.1556/004.2022.00038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/04/2022] [Indexed: 12/23/2022]
Abstract
By a broad-range PCR, we detected a novel herpesvirus (HV) in the specimen of a wels catfish (Silurus glanis) presenting disseminated, carp pox-like dermal lesions all over its body. The sequence analysis of the 463-bp PCR product from the viral DNA polymerase gene indicated the presence of a hitherto unknown virus, a putative member of the family Alloherpesviridae in the sample. Another PCR, targeting the terminase gene of fish HVs, provided an additional genomic fragment of over 1,000 bp. Surprisingly, the sequence of a co-amplified, off-target PCR product revealed its origin from a putative gene homologous to ORF87 and ORF45 of cyprinid HVs and anguillid herpesvirus 1 (AngHV-1), respectively. With specific primers, designed according to the genomic maps of the cyprinid and anguillid HVs, a genomic fragment of 15 kb was also amplified and sequenced by primer walking. In phylogeny inferences, based on several genes, the putative wels catfish HV clustered closest to various cyprinid HVs or to AngHV-1. The novel virus, named as silurid herpesvirus 2, represents a distinct species in the genus Cyprinivirus. However, its association with the skin disease remains unclear.
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Affiliation(s)
- Zoltán László Tarján
- Veterinary Medical Research Institute, Eötvös Loránd Research Network, Hungária krt. 21, H-1143 Budapest, Hungary
| | - Andor Doszpoly
- Veterinary Medical Research Institute, Eötvös Loránd Research Network, Hungária krt. 21, H-1143 Budapest, Hungary
| | - Edit Eszterbauer
- Veterinary Medical Research Institute, Eötvös Loránd Research Network, Hungária krt. 21, H-1143 Budapest, Hungary
| | - Mária Benkő
- Veterinary Medical Research Institute, Eötvös Loránd Research Network, Hungária krt. 21, H-1143 Budapest, Hungary
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Kraberger S, Austin C, Farkas K, Desvignes T, Postlethwait JH, Fontenele RS, Schmidlin K, Bradley RW, Warzybok P, Van Doorslaer K, Davison W, Buck CB, Varsani A. Discovery of novel fish papillomaviruses: From the Antarctic to the commercial fish market. Virology 2022; 565:65-72. [PMID: 34739918 PMCID: PMC8713439 DOI: 10.1016/j.virol.2021.10.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 01/04/2023]
Abstract
Fish papillomaviruses form a newly discovered group broadly recognized as the Secondpapillomavirinae subfamily. This study expands the documented genomes of the fish papillomaviruses from six to 16, including one from the Antarctic emerald notothen, seven from commercial market fishes, one from data mining of sea bream sequence data, and one from a western gull cloacal swab that is likely diet derived. The genomes of secondpapillomaviruses are ∼6 kilobasepairs (kb), which is substantially smaller than the ∼8 kb of terrestrial vertebrate papillomaviruses. Each genome encodes a clear homolog of the four canonical papillomavirus genes, E1, E2, L1, and L2. In addition, we identified open reading frames (ORFs) with short linear peptide motifs reminiscent of E6/E7 oncoproteins. Fish papillomaviruses are extremely diverse and phylogenetically distant from other papillomaviruses suggesting a model in which terrestrial vertebrate-infecting papillomaviruses arose after an evolutionary bottleneck event, possibly during the water-to-land transition.
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Affiliation(s)
- Simona Kraberger
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Charlotte Austin
- School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand
| | - Kata Farkas
- School of Natural Sciences, Bangor University, Bangor, LL57 2UW, UK
| | - Thomas Desvignes
- Institute of Neuroscience, University of Oregon, Eugene OR 97403, USA
| | | | - Rafaela S. Fontenele
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Kara Schmidlin
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Russell W. Bradley
- Santa Rosa Island Research Station, California State University Channel Islands, Camarillo CA 93012, USA
| | - Pete Warzybok
- Point Blue Conservation Science, Petaluma, California, CA 94954, USA
| | - Koenraad Van Doorslaer
- School of Animal and Comparative Biomedical Sciences, The BIO5 Institute; Department of Immunobiology; Cancer Biology Graduate Interdisciplinary Program; UA Cancer Center, University of Arizona, Tucson, AZ 85724, USA
| | - William Davison
- School of Natural Sciences, Bangor University, Bangor, LL57 2UW, UK
| | - Christopher B. Buck
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA,corresponding authors Christopher B. Buck, Arvind Varsani
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA,Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, 7925, Cape Town, South Africa,corresponding authors Christopher B. Buck, Arvind Varsani
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Saleh M, Sellyei B, Kovács G, Székely C. Viruses Infecting the European Catfish ( Silurus glanis). Viruses 2021; 13:1865. [PMID: 34578446 PMCID: PMC8473376 DOI: 10.3390/v13091865] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 12/23/2022] Open
Abstract
In aquaculture, disease management and pathogen control are key for a successful fish farming industry. In past years, European catfish farming has been flourishing. However, devastating fish pathogens including limiting fish viruses are considered a big threat to further expanding of the industry. Even though mainly the ranavirus (Iridoviridea) and circovirus (Circoviridea) infections are considered well- described in European catfish, more other agents including herpes-, rhabdo or papillomaviruses are also observed in the tissues of catfish with or without any symptoms. The etiological role of these viruses has been unclear until now. Hence, there is a requisite for more detailed information about the latter and the development of preventive and therapeutic approaches to complete them. In this review, we summarize recent knowledge about viruses that affect the European catfish and describe their origin, distribution, molecular characterisation, and phylogenetic classification. We also highlight the knowledge gaps, which need more in-depth investigations in the future.
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Affiliation(s)
- Mona Saleh
- Clinical Division of Fish Medicine, University of Veterinary Medicine, 1220 Vienna, Austria
| | - Boglárka Sellyei
- Fish Pathology and Parasitology Research Team, Veterinary Medical Research Institute, Hungária krt. 21., 1143 Budapest, Hungary; (B.S.); (C.S.)
| | - Gyula Kovács
- Research Institute for Fisheries and Aquaculture (HAKI), Hungarian University of Agriculture and Life Sciences, Anna-liget utca 35., 5540 Szarvas, Hungary;
| | - Csaba Székely
- Fish Pathology and Parasitology Research Team, Veterinary Medical Research Institute, Hungária krt. 21., 1143 Budapest, Hungary; (B.S.); (C.S.)
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