Fish Parasite under Climate Change

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Fish Pathology and Parasitology".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 1755

Special Issue Editors


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Guest Editor
CIIMAR/FCUP Department of Biology, Porto University, Rua do Campo Alegre s/n, FC4, 4169-007 Porto, Portugal
Interests: parasitology; aquatic organisms; ecology

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Guest Editor
Biological Interactions, Universidade Federal do Paraná, Curitiba, PR, Brazil
Interests: evolution of biological interactions; parasitology

Special Issue Information

Dear Colleagues,

The global warming it is already accepted as the main cause of climatic changes in our planet. In the ocean, the direct effect of the increase in greenhouse gas liberation is not only the increase in water temperature, but also the acidification of the waters. These two factors, and others, will account for numerous changes in each organism, at the population level, at the community level, or even at ecosystem level. If one species is more sensible and disappears from the community, and if it belongs to a basic level of the food chain, for example, all the equilibrium can be broken. New relationships will be established soon, and new parasitic relationships can be shown, probably with new host infections. These new connections are important to prevent, in order to better be able to control them in the near future and avoid serious fish diseases. Thus, we invite the researchers to share their knowledge in this Special Volume dedicated to “Fish Parasites under Climatic Changes”.

Dr. Maria João Santos
Prof. Dr. Walter A Boeger
Guest Editors

Manuscript Submission Information

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Keywords

  • fish
  • parasites
  • climatic changes
  • diseases

Published Papers (1 paper)

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Research

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Article
Population and Transcriptomic Changes of the Tropical Fish Parasite Caligus confusus (Copepoda: Caligidae) with Seasonal Variations in Sea Temperature
by Citlalic Altagracia Pimentel-Acosta, Víctor Hugo Caña-Bozada, Juan Manuel Osuna-Cabanillas, Emma Josefina Fajer-Ávila, Cesaré Ovando-Vásquez and Francisco Neptalí Morales-Serna
Fishes 2023, 8(10), 475; https://doi.org/10.3390/fishes8100475 - 23 Sep 2023
Viewed by 1349
Abstract
Fish–parasite systems could be subject to two scenarios under climate change: (i) increased water temperature might enhance parasite metabolism, allowing the parasite to spread rapidly; (ii) parasitism could decrease if the optimal temperature for growth and transmission is exceeded. Sea lice are parasitic [...] Read more.
Fish–parasite systems could be subject to two scenarios under climate change: (i) increased water temperature might enhance parasite metabolism, allowing the parasite to spread rapidly; (ii) parasitism could decrease if the optimal temperature for growth and transmission is exceeded. Sea lice are parasitic copepods commonly found on marine fish in tropical regions, yet their biology remains poorly investigated. In this study, we analyzed the changes in infection levels and the transcriptomic response of the tropical sea louse Caligus confusus to two seasonal seawater temperatures (30 °C, “warm”, and 21 °C, “cold”). The prevalence of C. confusus was significantly higher in the colder water. A de novo transcriptomic analysis of C. confusus, the first for a tropical sea louse, revealed 426 over-expressed and 1402 down-expressed transcripts at the lower temperature. In particular, we observed over-expression of transcripts encoding vitellogenins (vit-1, vit-2, vit-4, and vit-6) and matrix metalloproteinases (mmp-2 and mmp-9), which are involved in reproduction and development. These results suggest that the cold tropical season physiologically favors C. confusus and that low temperature favors embryo development, which might ultimately lead to a higher prevalence. It is possible, therefore, that climate change could reduce some tropical sea lice populations during extreme warming events. Full article
(This article belongs to the Special Issue Fish Parasite under Climate Change)
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