Special Issue "Ecotoxicity of Contaminants in Water and Sediment"

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Ecotoxicology".

Deadline for manuscript submissions: 20 December 2022 | Viewed by 1838

Special Issue Editors

Dr. Fatima Jesus
E-Mail Website
Guest Editor
CESAM and Department of Environment and Planning, University of Aveiro, Santiago Campus, 3810-193 Aveiro, Portugal
Interests: aquatic ecotoxicology; climate change; multiple stressors; metals; emerging contaminants; water quality; forest fires; benthic species; environment
Dr. Louis A. Tremblay
E-Mail Website
Guest Editor
1. Cawthron Institute, Private Bag 2, Nelson 7042, New Zealand
2. School of Biological Sciences, University of Auckland, P.O. Box 92019, Auckland 1142, New Zealand
Interests: biomarkers; bioindicators; mechanisms of toxicity; effects directed analysis (EDA); multiple stressors; emerging contaminants; hazard characterisation; community engagement; life cycle assessment; biomonitoring; one health

Special Issue Information

Dear Colleagues,

Aquatic systems are the receptacle for many of the contaminants released into the environment by a range of anthropogenic land-based activities. There is increasing concern about the impacts of more persistent contaminants on exposed aquatic biota, and investigation into the adverse effects of contaminants on aquatic biota is underway; nonetheless, there are still many knowledge gaps that need to be addressed. These include the toxicity of mixtures of contaminants and the ecotoxicological effects at the water–sediment interface. A better understanding of the effects of contaminants on ecosystems is required to better inform and support environmental managers, helping them to make decisions and develop sustainable policy.

For this Special Issue, we seek manuscripts that will contribute to our knowledge of the ecotoxicological effects of single contaminant or mixtures on aquatic biota across multiple levels of biological organization. Papers may include—but are not limited to—assessment of the toxicity of single chemicals, mixtures, and environmental extracts on pelagic or benthic species, evaluation of ecotoxicological effects at the individual, sub-individual, and community level, and ecological risk assessment. Papers that investigate the implementation of ecotoxicological data into environmental management framework and policy will also be considered.

Authors are invited to submit original research papers, reviews, and short communications. We would also welcome the submission of commentaries, reviews, and meta-analyses.

Dr. Fatima Jesus
Dr. Louis A. Tremblay
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. Toxics 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 1800 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

  • ecotoxicology
  • environment
  • aquatic contaminants
  • aquatic biota
  • sediments
  • benthic species
  • freshwater
  • risk assessment

Published Papers (2 papers)

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Editorial

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Editorial
Key Challenges to the Effective Management of Pollutants in Water and Sediment
Toxics 2022, 10(5), 219; https://doi.org/10.3390/toxics10050219 - 27 Apr 2022
Viewed by 524
Abstract
The intensification of human activities is placing increasing pressure on the ecosystems of riverine, estuarine, and coastal waters, as these compartments are sinks for many anthropogenic contaminants [...] Full article
(This article belongs to the Special Issue Ecotoxicity of Contaminants in Water and Sediment)

Research

Jump to: Editorial

Article
Oxidative Stress and Histopathological Changes in Gills and Kidneys of Cyprinus carpio following Exposure to Benzethonium Chloride, a Cationic Surfactant
Toxics 2022, 10(5), 227; https://doi.org/10.3390/toxics10050227 - 29 Apr 2022
Cited by 1 | Viewed by 541
Abstract
One cationic surfactant with a wide spectrum of microbiocidal activity is benzethonium chloride (BEC). Despite being widely used, the toxicity data on vertebrate organisms are limited. Therefore, we aimed to evaluate within this study the acute toxicity of BEC on the gills and [...] Read more.
One cationic surfactant with a wide spectrum of microbiocidal activity is benzethonium chloride (BEC). Despite being widely used, the toxicity data on vertebrate organisms are limited. Therefore, we aimed to evaluate within this study the acute toxicity of BEC on the gills and kidneys of Cyprinus carpio (European carp). An alteration of the antioxidant enzymes activities (glutathione reductase, glutathione peroxidase and glutathione S-transferase) was noticed after 96 h of exposure, along with an elevation of lipid peroxidation and decreased concentration of reduced glutathione, which confirmed that BEC was able to induce toxicity to these tissues. These metabolic effects were correlated with unspecific structural changes observed in gills and kidneys, having moderate degree of severity (such as an increase of melanomacrophages aggregation incidence and cytoplasm vacuolation of goblet cells in collecting tubules) and generally being compatible with life for the exposure time studied. The most severe structural effects were observed in gills after 96 h, noticing a lamellar aneurysm, hemorrhages and lamellar epithelium disruption due to the blood vessels and pillar cells damages and increased blood flow inside the lamellae. By our research we can confirm the utility of biochemical and histological analyses in the fish organs as tools for monitoring the water quality and ecotoxicological potential of chemicals. Full article
(This article belongs to the Special Issue Ecotoxicity of Contaminants in Water and Sediment)
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