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Fishes
Special Issues
Effects of Environmental Pollutants on Aquatic Animals and Ecosystem
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Effects of Environmental Pollutants on Aquatic Animals and Ecosystem

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Environment and Climate Change".

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 5313

Special Issue Editor

Dr. Han Gong

E-Mail Website
Guest Editor
College of Marine Sciences, South China Agricultural University, Guangzhou 510000, China
Interests: water/wastewater treatment; advanced oxidation processes; emerging pollutants; toxicology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Water is the origin of life, and aquatic ecosystems play an important role in human life by providing aquatic products. However, the rapid development of the economy is accompanied by the discharge of various pollutants. Chemical pollutants, including petroleum, heavy metals, endocrine disrupting compounds (EDCs), persistent organic pollutants (POPs), pharmaceuticals and personal care products (PPCPs), microplastics (MPs), nanoparticles (NPs), etc., are frequently detected in water environments and pose adverse effects on aquatic organisms and the whole ecosystem. In addition, biological pollutants, e.g., harmful algae, bacteria, and viruses, also threaten the life activities of aquatic organisms and the ecosystem. Great efforts have been made to illustrate the effects of pollutants on the individual, population, community, and ecosystem levels. To clarify the toxicology of the pollutants, the cytotoxicity and genotoxicity of pollutants have also been well studied. This Special Issue focuses on the effects of environmental pollutants on aquatic animals and ecosystems. Papers concerning toxicity evaluation and the toxic mechanism of pollutants that affect aquatic animals at the molecular, cellular, organ, individual, and population levels are welcomed, as well as papers on the effects of environmental pollutants on material cycling, energy flow, and signal transfer of the aquatic ecosystem.

Dr. Han Gong
Guest Editor

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

  • environment pollutants
  • aquatic organisms
  • effects
  • toxicity
  • aquaculture water
  • marine animals
  • aquatic ecology

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Published Papers (2 papers)

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Research

13 pages, 3279 KiB  
Article
Effect of Chronic Hydrogen Peroxide Exposure on Ion Transport in Gills of Common Carp (Cyprinus carpio)
by Yating Mou, Bing Li, Yiran Hou, Rui Jia and Jian Zhu
Fishes 2023, 8(3), 134; https://doi.org/10.3390/fishes8030134 - 26 Feb 2023
Cited by 5 | Viewed by 2708
Abstract
High environmental hydrogen peroxide (H2O2) has been demonstrated to be toxic for fish. However, the response mechanism of fish to chronic H2O2 exposure is not yet well understood. Therefore, this study aimed to investigate the alteration [...] Read more.
High environmental hydrogen peroxide (H2O2) has been demonstrated to be toxic for fish. However, the response mechanism of fish to chronic H2O2 exposure is not yet well understood. Therefore, this study aimed to investigate the alteration in ion transport in gills and analyzed the potential response mechanism after chronic H2O2 exposure. The common carps were exposed to 0, 0.25, 0.50, and 1.00 mM of H2O2 for 14 days. The histopathological evaluation results indicated that H2O2 exposure caused incomplete gill filament structure. In the plasma, H2O2 exposure suppressed the potassium (K+) concentration but increased sodium (Na+) concentration. In the gills, the calcium (Ca2+) level was raised, but the K+ and chlorine (Cl−) levels were decreased after H2O2 exposure. After 14 days of exposure, H2O2 prompted the activities of Ca2+/Mg2+-ATPase and H+/K+-ATPase but suppressed Na+/K+-ATPase activity in the gills. Gene transcription analysis showed that the ion-regulation-related genes including nkaa and rhbg were downregulated after H2O2 exposure. In addition, H2O2 exposure upregulated the mRNA levels of cam and camk II, indicating that the Ca2+ singling pathway was activated. In conclusion, our data showed that chronic H2O2 exposure altered gill structure and disturbed ion transport, which further negatively affected the equilibrium of ions and osmotic pressure. Full article
(This article belongs to the Special Issue Effects of Environmental Pollutants on Aquatic Animals and Ecosystem)
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18 pages, 2873 KiB  
Article
Whole-Body Toxic Metals and Morphometric Measurements in Brown Shrimp Penaeus aztecus in the Gulf of Mexico
by María del Refugio Castañeda-Chávez, Gabycarmen Navarrete-Rodríguez, Armando T. Wakida-Kusunoki, Ernesto Baruch-Garduza and David Reynier-Valdés
Fishes 2022, 7(5), 293; https://doi.org/10.3390/fishes7050293 - 19 Oct 2022
Cited by 2 | Viewed by 2020
Abstract
Fishing of the brown shrimp Penaeus aztecus is an important socioeconomic activity, generating income and different jobs for the fishing sector; however, this species is exposed to contaminants such as toxic metals. The objective of this research was to determine the concentrations of [...] Read more.
Fishing of the brown shrimp Penaeus aztecus is an important socioeconomic activity, generating income and different jobs for the fishing sector; however, this species is exposed to contaminants such as toxic metals. The objective of this research was to determine the concentrations of Cd, Pb, Cr, and Ni in brown shrimp P. aztecus from the northwestern Gulf of Mexico, and to analyse morphometric measurements in this species. The determination of toxic metals in shrimp was carried out according to the method proposed by the USEPA. Sexual identification was carried out by examining the first pleopods of P. aztecus specimens; the stages of maturity and proportion of sexes were also determined, finding specimens at maturity stages I and II. Specimens collected in the Veracruz area presented higher morphometric values, with an average TL of 136.15 mm. It was identified in the same area that the batches were formed by a higher proportion of males at 72.2%. Ni was the metal with the highest concentration in the Veracruz area at 15.5 µg g−1, while Pb had a maximum concentration of 8.3 µg g−1. The concentrations obtained for the toxic metals in the shrimp exceeded the values of the international permissible limits established for Pb and Cd. Full article
(This article belongs to the Special Issue Effects of Environmental Pollutants on Aquatic Animals and Ecosystem)
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