Parasites in Aquaculture

A Special Issue of Fishes (ISSN 2410-3888) belonging to the section "Fish Pathology and Parasitology".

Deadline for manuscript submissions: closed (10 July 2026) | Viewed by 810

Editor


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Guest Editor
ISEM (Institute of Evolutionary Science) of Montpellier, Université de Montpellier, CNRS, IRD, EPHE, 31095 Montpellier, France
Interests: emerging infectious diseases; biodiversity; bacteriology; virology; parasitology; aquatic ecosystems; invasive species; one health
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Special Issue Information

Dear Colleagues,

The journal Fishes is preparing a Special Issue entitled “Parasites in Aquaculture”.

Aquaculture plays a major role in global food security, which is one of the main concerns of the United Nations 2030 Agenda for Sustainable Development Goals. International aid and development agencies have promoted aquaculture as a promising sector for protein production, and it has been estimated by the Food and Agriculture Organization of the United Nations (FAO) that one billion people worldwide depend on fish proteins. Whilst aquaculture has been practiced for over 3000 years, the emerging infectious disease risk remains one of the major constraints to its sustainability, with potential major consequences on food security, global health and the economy. However, disease risk analysis requires extensive information and knowledge on the epidemiological factors of diseases, including lethality, infectivity and virulence. Moreover, parasitic infections contribute to a growing number of infections in aquaculture, but these infections are still understudied compared with bacterial and viral ones. There is a lack of information on the prevalence and diversity of parasitic infections in aquaculture production systems, and the absence of simple health monitoring methods has long hindered the implementation of streamlined infection risk management. However, infection risk assessment is attracting growing interest, notably for the implementation of (i) animal transport policies within and between countries and to develop legislative strategies in order to manage the risk of disease emergence, and (ii) health surveillance programmes.

This Special Issue collects studies that aim to boost our knowledge of all types of parasitic infections in the aquaculture sector. A wide range of aspects are welcome, such as the ecology, life cycle, host range, mechanisms of infection, prevalence and virulence of parasites infecting farmed aquatic animals.

Dr. Marine Combe
Guest Editor

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 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

  • parasites
  • farmed aquatic animals
  • infections
  • prevalence
  • virulence
  • diversity
  • disease emergence
  • disease ecology
  • disease management

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Published Papers (1 paper)

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Research

10 pages, 9766 KB  
Communication
First Detection and Seasonal Dynamics of Proliferative Kidney Disease in Northwestern Italy
by Annalisa Cotugno, Paolo Pastorino, Lucio Fariano, Sara Glorio Patrucco, Fabio Bondavalli, Giorgia Zicarelli, Giulia Milanese, Martina Alessandra Gini, Giuseppe Esposito, Cinzia Bergamino, Pier Luigi Acutis, Elena Bozzetta, Marino Prearo and Silvia Colussi
Fishes 2026, 11(8), 476; https://doi.org/10.3390/fishes11080476 - 14 Aug 2026
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Abstract
Proliferative kidney disease (PKD), caused by the myxozoan parasite Tetracapsuloides bryosalmonae, represents a major threat to salmonid populations and aquaculture, particularly under warming environmental conditions. In Italy, its distribution remains poorly documented. This study aimed to update the epidemiological status of PKD [...] Read more.
Proliferative kidney disease (PKD), caused by the myxozoan parasite Tetracapsuloides bryosalmonae, represents a major threat to salmonid populations and aquaculture, particularly under warming environmental conditions. In Italy, its distribution remains poorly documented. This study aimed to update the epidemiological status of PKD by investigating its occurrence in a trout farm (Piedmont, northwestern Italy), a previously unreported area. A total of 787 individuals of Oncorhynchus mykiss were sampled between May and October 2024 across three seasonal periods. Fish were examined using necropsy, bacteriological, and molecular analyses. Water temperature ranged from 12.4 to 20.3 °C, showing a clear seasonal trend. Overall PKD prevalence was 42.3%, with significant temporal variation, increasing from 23.0% in early summer to 73.0% in late summer, and declining to 3.9% in autumn. A multivariable logistic regression model showed that PKD-positive fish had a lower probability of presenting macroscopic lesions, while sampling period was the main predictor of infection. These results revealed a temporal mismatch between pathological and molecular findings, highlighting the need for further histopathological validation of the observed seasonal patterns. This study provides the first evidence of PKD in southwestern Piedmont, extending the currently documented distribution of the disease in Italy and highlighting the need for enhanced surveillance under climate change. Full article
(This article belongs to the Special Issue Parasites in Aquaculture)
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