Infectious Diseases in Aquaculture

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Veterinary Microbiology".

Deadline for manuscript submissions: 28 February 2025 | Viewed by 708

Special Issue Editor


E-Mail Website
Guest Editor
Instituto Politecnico Nacional-CIIDIR Sinaloa, Blvd Juan de Dios Batiz Paredes 250, Colonia San Joachin, Guasave 81101, Sinaloa, Mexico
Interests: shrimp; viral diseases; pathology; evaluation of control methods

Special Issue Information

Dear Colleagues,

Aquaculture is an animal production industry. In 2023, its worth was USD 195 billion, producing 185 million tonnes of aquatic animals and 38 million tonnes of algae. This activity is threatened by infectious diseases precipitated by microbial agents such as viruses, bacteria, protozoa and fungi. Infectious disease starts when a pathogen enters a susceptible host, using the host’s cells and tissues to thrive and multiply, causing disease and often mortality. Depending on the pathogen’s requirement to multiply and survive at the expense of the host, they are considered either obligatory or opportunistic. Infectious diseases often cause massive mortalities and huge economic losses to aquaculture operations concerning crustaceans, mollusks, fish and other organisms. To reduce the impact of infectious diseases in aquaculture, various strategies should be developed and evaluated. These include rapid and sensitive diagnostic techniques, the modulation of the defense system of aquatic organisms, and an evaluation of experimental control methods. This Special Issue covers various aspects of infectious diseases such as novel diagnostic methods, emerging pathogens, and novel methods for disease control.

Dr. Cesar Marcial Escobedo-Bonilla
Guest Editor

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. Microorganisms 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 2700 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

  • aquaculture
  • infectious diseases
  • pathogens
  • diagnostics
  • control methods

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

16 pages, 8810 KiB  
Article
Streptococcus agalactiae Infection in Wild Trahira (Hoplias malabaricus) and Farmed Arapaima (Arapaima gigas) in Brazil: An Interspecies Transmission in Aquatic Environments Shared with Nile Tilapia (Oreochromis niloticus)
by Carlos Augusto Gomes Leal, Rafael Gariglio Clark Xavier, Guilherme Alves de Queiroz, Tarcísio Martins França Silva, Júnia Pacheco Teixeira, Flávia Figueira Aburjaile and Guilherme Campos Tavares
Microorganisms 2024, 12(12), 2393; https://doi.org/10.3390/microorganisms12122393 - 22 Nov 2024
Viewed by 79
Abstract
Streptococcus agalactiae is an important pathogen responsible for cases of high mortality in farmed and wild fish worldwide. In Brazil, this bacterium has been commonly associated with outbreaks in Nile tilapia farms, but other native fish species are also susceptible. Since floating cages [...] Read more.
Streptococcus agalactiae is an important pathogen responsible for cases of high mortality in farmed and wild fish worldwide. In Brazil, this bacterium has been commonly associated with outbreaks in Nile tilapia farms, but other native fish species are also susceptible. Since floating cages are one of the most common culture systems used in the country, the close contact between farmed tilapia and native fish species presents a risk concerning the transmission of this pathogen. In this study, we characterized a mortality outbreak in free-living trahira and in farmed arapaima, as well as the genetic and antimicrobial susceptibility patterns of the isolates obtained. During the outbreaks, moribund fish were sampled and subjected to bacterial examination, after which the isolates were identified via MALDI-ToF analysis. Genotyping was evaluated using repetitive sequence-based PCR (REP-PCR) and multilocus sequence typing (MLST). Antimicrobial susceptibility was evaluated using disc diffusion assays. In addition, whole-genome analysis also was performed. S. agalactiae was identified in all diseased fish, all of which belonged to serotype Ib; however, trahira strains were classified as non-typeable lineages in the MLST assay, while arapaima strains were classified as ST260. These isolates were shown to be similar to the main genotype found in Nile tilapia in Brazil, using REP-PCR, MLST and phylogenomic analysis. The pathogenicity of the bacterium was confirmed by Koch’s postulates for both fish species. The antimicrobial susceptibility assay showed variable results to the same antibiotics among the isolates, prompting four of the isolates to be classified as multidrug-resistant. This study represents the first report of a natural outbreak of Streptococcus agalactiae infection in wild trahira and farmed arapaima inhabiting the same aquatic environment as Nile tilapia. Full article
(This article belongs to the Special Issue Infectious Diseases in Aquaculture)
Show Figures

Figure 1

Back to TopTop