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Fishes
Special Issues
Effects of Trace Elements on Aquatic Animals
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Effects of Trace Elements on Aquatic Animals

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Welfare, Health and Disease".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3448

Special Issue Editors

Dr. Patrícia Pereira

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Guest Editor
Centro de Estudos do Ambiente e do Mar, Department of Biology, University of Aveiro, Aveiro, Portugal
Interests: mercury toxicology; neurotoxicity; behaviour; fish
Dr. Joana Raimundo

E-Mail Website
Guest Editor
IPMA-Portuguese Institute of Sea and Atmosphere, Division of Oceanography and Marine Environment (DIVOA), Av. Doutor Alfredo Magalhães Ramalho, 6, 1495-165 Lisboa, Portugal
Interests: metal accumulation; ecotoxicology; marine organisms
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Trace elements are introduced in aquatic systems from diffuse and local sources, often resulting in their uptake, accumulation and toxic effects on organisms. While the exposure of aquatic organisms to classic metals such as mercury and lead has been extensively studied, as well as related toxicity, information is still missing on their effects at more integrative levels (e.g., reproduction; behaviour). On the other hand, the recent OMICs approaches can provide valuable contributions to the understanding of those metals’ toxicity. Moreover, technology-critical elements (TCEs), such as some rare earth elements (REE), and platinum-group elements (PGEs) remain poorly investigated for their toxicokinetics and toxicodynamics in aquatic organisms. These are just some of the topics that are covered by this Special Issue of Fishes that is dedicated to the effects of classic trace elements and contaminants of emergent concern on aquatic species, covering both controlled experimental designs and field-based studies, and focusing on organisms’ wellbeing.

Dr. Patrícia Pereira
Dr. Joana Raimundo
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

  • classic and emergent trace elements
  • accumulation
  • toxicity
  • aquatic organisms

Published Papers (2 papers)

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Research

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18 pages, 3224 KiB  
Article
Trace Metals Distribution in Tissues of 10 Different Shark Species from the Eastern Mediterranean Sea
by Eleni Roubie, Sotirios Karavoltsos, Aikaterini Sakellari, Nikolaos Katsikatsos, Manos Dassenakis and Persefoni Megalofonou
Fishes 2024, 9(2), 77; https://doi.org/10.3390/fishes9020077 - 16 Feb 2024
Cited by 1 | Viewed by 1661
Abstract
As long-living apex predators, sharks tend to bioaccumulate trace metals through their diet. The distribution of Al, As, Cd, Co, Cr, Cs, Cu, Fe, Mn, Ni, Pb, V, Zn and Hg in different tissues (muscle, liver, heart, gills and gonads) of large-size (58–390 [...] Read more.
As long-living apex predators, sharks tend to bioaccumulate trace metals through their diet. The distribution of Al, As, Cd, Co, Cr, Cs, Cu, Fe, Mn, Ni, Pb, V, Zn and Hg in different tissues (muscle, liver, heart, gills and gonads) of large-size (58–390 cm) sharks, some of which rare, of the eastern Mediterranean Sea was studied. Trace metals analyses in samples originating from ten different Chondrichthyes species were performed by inductively coupled plasma–mass spectrometry (ICP-MS) and Cold Vapor Atomic Absorption Spectrometry (CVAAS) for Hg. Data on trace metal levels are for the first time reported herewith for the species O. ferox and H. nakamurai. Higher median concentrations of trace metals were generally determined in the liver. The concentrations of Hg, Cs and As in the muscle increased proportionally with body length. Statistically significant differences between sexes were recorded for Hg, Cr, Ni and As (p = 0.015) in the muscle tissues of P. glauca. Muscle tissue Hg concentrations exceeded the EU maximum limit (1 μg g−1 wet weight) in 67% of the individuals sampled, with the highest concentrations detected in O. ferox and S. zygaena, whereas regarding Pb (limit 0.30 μg g−1 ww), the corresponding percentage was 15%. Arsenic concentrations were also of concern in almost all shark tissues examined. Full article
(This article belongs to the Special Issue Effects of Trace Elements on Aquatic Animals)
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Review

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21 pages, 6593 KiB  
Review
Cadmium as an Endocrine Disruptor That Hinders the Reproductive and Developmental Pathways in Freshwater Fish: A Review
by Kaakarlu Shivakumar Vinanthi Rajalakshmi, Wen-Chao Liu, Balasubramanian Balamuralikrishnan, Arun Meyyazhagan, Govindharajan Sattanathan, Manikantan Pappuswamy, Kadanthottu Sebastian Joseph, Kuppusamy Alagesan Paari and Jang-Won Lee
Fishes 2023, 8(12), 589; https://doi.org/10.3390/fishes8120589 - 30 Nov 2023
Viewed by 1553
Abstract
Cadmium (Cd) is a non-essential element with sub-lethal effects even at low concentrations. The persistent nature of Cd and its tendency to bioaccumulate eventually create harmful effects on water biota, including fish. Cd affects various aspects of hormonal action in fish since it [...] Read more.
Cadmium (Cd) is a non-essential element with sub-lethal effects even at low concentrations. The persistent nature of Cd and its tendency to bioaccumulate eventually create harmful effects on water biota, including fish. Cd affects various aspects of hormonal action in fish since it bioaccumulates in the endocrine system and hinders the synthesis, secretion, and metabolic activity of hormones, causing severe damage along the hypothalamus–pituitary–gonadal axis. Linking reproductive and developmental impairments in fish with ecologically relevant concentrations of individual metals can be challenging due to the complexity of aquatic ecosystems. This review deliberated the significant and novel trends of toxicological difficulties and approaches, including elucidating environmental sources’ bioavailability and Cd-induced toxic effects in freshwater fish. Both acute and chronic exposure to Cd can cause a range of adverse effects, such as growth inhibition, impaired reproductive capacity, endocrine disruption, and developmental abnormalities in freshwater fish, as evidenced by the present review. These investigations support the concept of Cd as a naturally available pollutant that causes irreversible damage in fish. These findings will help to understand the etiology of environmental circumstances that pose substantial dangers to fish health and are also crucial for preventing and treating exposure-related reproductive disturbances in freshwater fish due to environmental pollution. Full article
(This article belongs to the Special Issue Effects of Trace Elements on Aquatic Animals)
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