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Veterinary Sciences
Special Issues
Fish Diseases and Immunity
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Fish Diseases and Immunity

A special issue of Veterinary Sciences (ISSN 2306-7381). This special issue belongs to the section "Veterinary Microbiology, Parasitology and Immunology".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 6598

Special Issue Editors

Dr. Saurabh Dubey

E-Mail Website1 Website2
Guest Editor
Faculty of Veterinary Medicine, Norwegian University of Life Sciences, P.O. Box 5003, 1433 Ås, Norway
Interests: fish microbiology; fish immunology; microbial genomics; antimicrobial resistance and nanotechnology
Prof. Dr. Hetron Mweemba Munang’andu

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Guest Editor
Faculty of Biosciences and Aquaculture, Nord University, 8049 Bodø, Norway
Interests: fish viral disease; fish vaccinology and immunology; bacterial genomics; metagenomics
Dr. Kizito Kahoza Mugimba

E-Mail Website
Guest Editor
Department of Biotechnical and Diagnostic Sciences, College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala P.O. Box 7062, Uganda
Interests: fish microbiology; immunology; virology

Special Issue Information

Dear Colleagues,

Disease is one of the major constraints in the fish farming industry, and it has an adverse impact on global food security. Diseases caused by different pathogens that include different bacteria species, viruses, fungi, and parasites are endemic in aquaculture in different countries. As such, different approaches are being used to control diseases caused by these pathogens. These approaches include the use of antibiotics leading to an increase in studies on antimicrobial resistance (AMR) in aquaculture. On the other hand, vaccination is considered to be the most environmentally friendly disease-control strategy, which has paved the way for various studies on immunology and vaccinology studies of various farmed aquatic organisms. These disease control strategies have immensely contributed to expanding the areas of research in aquaculture. Thus, this Special Issue of Veterinary Sciences will focus on original research on various topics including host–pathogen interactions, immunology, vaccinology, and antimicrobials.

We welcome all contributions related to the control of the fish diseases, food safety, vaccine development, and immunology of different aquatic organisms.

Dr. Saurabh Dubey
Prof. Dr. Hetron Mweemba Munang’andu
Dr. Kizito Kahoza Mugimba
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Veterinary Sciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

 

Keywords

  • fish disease
  • fish microbiology
  • fish immunology
  • antimicrobial resistance

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Published Papers (2 papers)

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Research

20 pages, 1750 KiB  
Article
Lactiplantibacillus argentoratensis and Candida tropicalis Isolated from the Gastrointestinal Tract of Fish Exhibited Inhibitory Effects against Pathogenic Bacteria of Nile Tilapia
by Noppadon Siangpro, Songkran Chuakrut, Wanna Sirimanapong, Somboon Tanasupawat, Wongsakorn Phongsopitanun, Bunyarit Meksiriporn, Jarungwit Boonnorat, Siripun Sarin, Siriwat Kucharoenphaibul and Rumpa Jutakanoke
Vet. Sci. 2023, 10(2), 129; https://doi.org/10.3390/vetsci10020129 - 7 Feb 2023
Cited by 5 | Viewed by 3198
Abstract
Nile tilapia is one of the most consumed farmed fish in the world. The outbreak of pathogenic bacterial diseases causes high mortality rates and economic losses in Nile tilapia farming. Antibiotic administrations are commonly utilized to inhibit and prevent bacterial infections. However, antibiotics [...] Read more.
Nile tilapia is one of the most consumed farmed fish in the world. The outbreak of pathogenic bacterial diseases causes high mortality rates and economic losses in Nile tilapia farming. Antibiotic administrations are commonly utilized to inhibit and prevent bacterial infections. However, antibiotics are expensive and cause serious concerns for antibiotic resistance in fish that can be potentially transferred to humans. As an alternative solution, probiotics can be used to prevent infection of pathogenic bacteria in fish. In this work, both bacteria and yeast were isolated from fish gastrointestinal tracts and their inhibitory activity against Nile tilapia pathogenic bacteria was evaluated, as well as other probiotic properties. In this study, 66 bacteria and 176 acid tolerant yeasts were isolated from fish gastrointestinal tracts. Of all isolated microorganisms, 39 bacterial and 15 yeast isolates with inhibitory effect against pathogens were then examined for their probiotic properties (acidic and bile salt resistance, adhesion potential, and biofilm formation), formation of antibacterial factor survival rate under simulated gastrointestinal fluid, and safety evaluation. AT8/5 bacterial isolate demonstrated probiotic properties and the highest inhibition against all 54 tested pathogens while YON3/2 yeast isolate outperformed the inhibitory effect among all yeast isolates. These two probiotic isolates were further identified by 16S rDNA and the D1/D2 domain of 26S rDNA sequence analysis for bacterial and yeast identification, respectively. AT8/5 and YON3/2 showed the highest similarity to Lactiplantibacillus argentoratensis and Candida tropicalis, respectively. This is the first report on isolated L. argentoratensis and C. tropicalis with antipathogenic bacteria of Nile tilapia properties. Collectively, AT8/5 and YON3/2 could be potentially used as promising alternatives to existing antibiotic methods to prevent pathogenic bacteria infection in Nile tilapia farming. Full article
(This article belongs to the Special Issue Fish Diseases and Immunity)
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14 pages, 1672 KiB  
Article
Characterization of a Novel Infectious Pancreatic Necrosis Virus (IPNV) from Genogroup 6 Identified in Sea Trout (Salmo trutta) from Lake Vänern, Sweden
by B. David Persson, Jacob Günther Schmidt, Mikhayil Hakhverdyan, Mikael Leijon, Niels Jørgen Olesen and Charlotte Axén
Vet. Sci. 2023, 10(1), 58; https://doi.org/10.3390/vetsci10010058 - 14 Jan 2023
Cited by 2 | Viewed by 2646
Abstract
In November 2016, infectious pancreatic necrosis virus (IPNV) was isolated from a broodstock female of landlocked sea trout (Salmo trutta) in Lake Vänern in Sweden. VP2 gene sequencing placed the IPNV isolate in genogroup 6, for which pathogenicity is largely unknown. [...] Read more.
In November 2016, infectious pancreatic necrosis virus (IPNV) was isolated from a broodstock female of landlocked sea trout (Salmo trutta) in Lake Vänern in Sweden. VP2 gene sequencing placed the IPNV isolate in genogroup 6, for which pathogenicity is largely unknown. Lake Vänern hosts landlocked sea trout and salmon populations that are endangered, and thus the introduction of new pathogens poses a major threat. In this study we characterized the novel isolate by conducting an infection trial on three salmonid species present in Lake Vänern, whole genome sequencing of the isolate, and prevalence studies in the wild sea trout and salmon in Lake Vänern. During the infection trial, the pathogenicity of the Swedish isolate was compared to that of a pathogenic genogroup 5 isolate. Dead or moribund fish were collected, pooled, and analyzed by cell culture to identify infected individuals. In the trial, the Swedish isolate was detected in fewer sample pools in all three species compared to the genogroup 5 isolate. In addition, the prevalence studies showed a low prevalence (0.2–0.5%) of the virus in the feral salmonids in Lake Vänern. Together the data suggest that the novel Swedish IPNV genogroup 6 isolate is only mildly pathogenic to salmonids. Full article
(This article belongs to the Special Issue Fish Diseases and Immunity)
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