Salmon Farming

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Sustainable Aquaculture".

Deadline for manuscript submissions: 20 October 2025 | Viewed by 553

Special Issue Editors


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Guest Editor
Centro i~Mar, Universidad de Los Lagos, Puerto Montt 5480000, Chile
Interests: fish physiology

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Guest Editor
Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
Interests: ecotoxicology; fish biology; signaling pathways; fish physiology; fish metabolism; fish stress; fish osmoregulation; aquaculture
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Special Issue Information

Dear Colleagues,

This Special Issue will explore the complex interplay between physiology, health, stress, welfare, and sustainability in salmon farming, with a particular emphasis on addressing challenges posed by climate change and the opportunities provided by technological innovations. The primary aim is to consolidate cutting-edge research that advances our understanding of salmon biology and management practices, fostering more sustainable and resilient aquaculture systems. Topics will include salmon physiology, health, stress responses, welfare optimization, the impacts of climate change, and the role of innovative technologies in promoting environmental and economic sustainability.

This issue will bridge gaps in the current body of knowledge by integrating insights from multiple disciplines to provide a holistic view of the challenges and advancements in salmon farming. While the existing literature offers significant findings in areas such as salmon physiology, health, and stress, this issue will extend these discussions by incorporating the latest research on climate-induced impacts and the application of emerging technologies. It aims to contextualize recent innovations within broader trends in aquaculture sustainability, offering a platform for interdisciplinary dialog and highlighting practical implications for improving salmon welfare and farming practices.

The aim of this Special Issue is to compile original research or reviews that address the latest advances in salmon farming, including salmon physiology, health, stress responses, welfare optimization, the impacts of climate change, and the role of innovative technologies in promoting environmental and economic sustainability, etc. Manuscripts on these topics are particularly welcome.

Dr. Jose Luis Muñoz
Dr. Luis Vargas-Chacoff
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. Fishes 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 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

  • salmon physiology
  • salmon health
  • salmon stress and welfare
  • climate change and salmon farming
  • technological innovation and sustainability
  • salmon aquaculture

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Published Papers (1 paper)

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Research

15 pages, 4598 KB  
Article
Full Scale Testing of a Concept for Salinity Regulation to Mitigate Sea Lice Infestation in Salmon Farming
by Magnus Drivdal, Thor Magne Jonassen, Albert Kjartan Dagbjartarson Imsland, Karin Bloch-Hansen, Lars Olav Sparboe, Claudia Halsband, Kristine Hopland Sperre and Tor Nygaard
Fishes 2025, 10(10), 503; https://doi.org/10.3390/fishes10100503 - 7 Oct 2025
Viewed by 298
Abstract
The large environmental and economic impact of sea lice infestation in the salmon industry has encouraged the development of non-medical methods and preventive strategies to combat sea lice infestation. Sea lice (Lepeophtheirus salmonis and Caligus elongatus) are sensitive to low salinities, [...] Read more.
The large environmental and economic impact of sea lice infestation in the salmon industry has encouraged the development of non-medical methods and preventive strategies to combat sea lice infestation. Sea lice (Lepeophtheirus salmonis and Caligus elongatus) are sensitive to low salinities, and using fresh water as protection against infection may thus significantly reduce sea lice infestation of salmon while reducing the costs and impacts of traditional delousing methods. A new concept presented here is based on the manipulation of salinity within cages by adding fresh water to create an unfavourable environment for sea lice infestation. A full-scale set-up was tested in a salmon farm in northern Norway: two commercial-size cages with Atlantic salmon (Salmo salar) were enclosed with a 2 m deep tarpaulin skirt and supplied with fresh water at the centre to establish a surface layer with reduced salinity. Two reference cages had no skirt or fresh water supply. Time series of CTD-data showed that the fresh water supply caused a shallow and unstable salinity gradient, with salinities lower than 10 ppt measured for short periods in the upper 0.5 m. Despite these instabilities, significantly lower sea lice infestation in cages supplied with fresh water was observed, as infestation rates for pre-adult and adult stages of L. salmonis were reduced by 48% and 57%, respectively, in the treatment cages compared to controls. This preventive strategy is therefore very promising and deserves further development under more stable and controlled conditions. Future studies should focus on improving freshwater regulation, ensuring higher spatial resolution of salinity data in surface layers and documenting the effect on the more salinity-sensitive planktonic stages of L. salmonis. In addition, there is a need to examine the effectiveness of the technique at multiple sites and under a wide range of site conditions, especially various current rates through the site. Full article
(This article belongs to the Special Issue Salmon Farming)
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