Advancing Research for the Management and Conservation of Diadromous Fish

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Biology and Ecology".

Deadline for manuscript submissions: closed (31 December 2025) | Viewed by 1002

Special Issue Editors


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Guest Editor
Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
Interests: aquatic ecology; fish migrations; exotic species; fisheries management; ecological connectivity

E-Mail Website
Guest Editor
Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
Interests: aquatic ecology; habitat connectivity; food webs

Special Issue Information

Dear Colleagues,

Diadromous fish face multiple threats, often acting in tandem, such as climate change, habitat fragmentation, overfishing and invasive species. This complex framework makes their management and conservation increasingly difficult, but more research is needed to fully understand the long-term impacts of these threats.

Recent advances in biotelemetry, otolith chemistry, stable isotope analysis, eDNA and high-resolution genetic tools are transforming how we track movements, assess genetic diversity and identify critical habitats. Additionally, ecological modelling, remote sensing and habitat suitability assessments are essential for predicting future population trends and evaluating conservation strategies.

Significant knowledge gaps remain, especially regarding marine life stages and how large populations respond to environmental change. We need interdisciplinary approaches that combine scientific research, conservation strategies and policy development to tackle these issues.

This Special Issue invites original research and review articles that explore new perspectives on diadromous species. Topics of interest include, but are not limited to, metapopulation dynamics, fisheries management, ecosystem restoration, climate adaptation and socio-ecological approaches to the conservation of these ecologically and economically valuable species.

Dr. Carlos Antunes
Dr. Pedro Morais
Dr. Ester Dias
Guest Editors

Manuscript Submission Information

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Keywords

  • diadromous fishes
  • climate change
  • conservation
  • fisheries management
  • genetic diversity
  • habitat connectivity

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Published Papers (1 paper)

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Research

14 pages, 1441 KB  
Article
Time Series Analysis of Atlantic Salmon Catches in the Minho River over a Century
by Ester Dias, Carlos Antunes, Martina Ilarri, Jacinto Cunha and Maria Eduarda Silva
Fishes 2026, 11(3), 132; https://doi.org/10.3390/fishes11030132 - 25 Feb 2026
Viewed by 562
Abstract
Atlantic salmon populations have declined in many regions and are affected by several natural and anthropogenic factors throughout their lives. We investigated the role of environmental drivers and the effect of dam construction on the trend in catches of spawning adults of a [...] Read more.
Atlantic salmon populations have declined in many regions and are affected by several natural and anthropogenic factors throughout their lives. We investigated the role of environmental drivers and the effect of dam construction on the trend in catches of spawning adults of a migratory population currently at risk. For this purpose, we examined the salmon catches from 1914 to 2020 in the Minho River (NW Portugal, SW Europe), located at the southern limit of this species’ distribution. There was a decline in catches over time with an inverse and significant relationship between the trend in catches and lagged temperature. Delayed effects of this type may indicate temperature influences on survival during early life history stages. Similarly, the trend in catches decreased with the increasing number of dams. A forecast model built for the period before the construction of the first major dam in this river (before 1955), including lagged temperature, resulted in a decreasing trend in the number of catches. This demonstrates that catches would have declined due to temperature effects even without dam construction. This does not diminish the role of dams in the observed decline; rather, it reveals that temperature-driven declines would have occurred independently. Nonetheless, efficient management and conservation of this imperiled population require further detailed biological information on the number of returning spawning adults and salmons’ survival throughout their life cycle. Full article
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