Aquatic Environmental Pollution and Ecotoxicological Studies

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Biodiversity and Functionality of Aquatic Ecosystems".

Deadline for manuscript submissions: 25 September 2024 | Viewed by 1166

Special Issue Editors


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Guest Editor
Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science, Tongyeong 53085, Republic of Korea
Interests: HAB; environmental factors; microbial loop; microcosm; estuary; coastal ecology

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Guest Editor
Division of Environmental System Science, Pukyong National University, Busan, Republic of Korea
Interests: HAB; ecotoxicology; environmental toxicology; inorganic chemistry; primary productivity

Special Issue Information

Dear Colleagues,

The occurrence of harmful marine organisms in the coastal waters is gradually increasing due to factors such as rising sea temperatures resulting from climate change, coastal pollution, alterations in the structure of marine food webs, and habitat destruction caused by development. Therefore, in this Special Issue, we aim to address research findings on the chemical, physiological, and ecological interactions between organisms and the environment. It is well known that water pollution caused by various pollutants since the Industrial Revolution has significantly impacted the aquatic biota. Through this Special Issue, we anticipate the inclusion of comprehensive insights into past issues, recent toxicological concerns affecting human health, and insights into factors that could pose serious problems in the future. We hope that experts from various fields will participate to collectively address issues concerning humanity or ecosystems.

Dr. Moonho Son
Prof. Dr. Seokjin Oh
Guest Editors

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Keywords

  • water pollution
  • ecotoxicology
  • environmental factors
  • food web
  • harmful organism

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Published Papers (2 papers)

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Research

17 pages, 2041 KiB  
Article
Investigation of Biotoxicity and Environmental Impact of Prometryn on Fish and Algae Coexistent System
by Zhenjiang Yang, Daoquan Zhao, Jinxing Gu, Ran Wu, Bianzhi Liu, Guangqing Yu, Pengsheng Dong, Xiaocheng Huang, Ming Li and Guoxi Li
Water 2024, 16(17), 2531; https://doi.org/10.3390/w16172531 - 6 Sep 2024
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Abstract
To investigate the toxic and environmental effects of prometryn, a laboratory experiment was performed on coexistent fish and algae. The body weight and length of Carassius carassius, Microcystis aeruginosa (M. aeruginosa) densities and water quality were measured continuously for 92 [...] Read more.
To investigate the toxic and environmental effects of prometryn, a laboratory experiment was performed on coexistent fish and algae. The body weight and length of Carassius carassius, Microcystis aeruginosa (M. aeruginosa) densities and water quality were measured continuously for 92 days. It was observed that fish growth was significantly inhibited by prometryn. This can be partly attributed to the adverse effects of prometryn on the antioxidant system of fish; the activities of superoxide dismutase (SOD) and catalase (CAT) in crucian carp were significantly inhibited by prometryn. The growth of M. aeruginosa was greatly inhibited by prometryn (p < 0.05), and the adverse effects of prometryn on M. aeruginosa indirectly impacted water qualities. The body weight and length of Carassius carassius first increased and then tended to be stable with increasing electrical conductivity (EC) values; their quantified relationship was established based on the Gompertz and Logistic equations (R2 = 0.920–0.989). Based on the above results, we concluded that the toxic effects of prometryn can impact the antioxidant system of fish and algae which in turn affects their growth performance, and have an indirect impact on water quality. The application of equations made it realizable to obtain a more detailed interpretation of the processes involved in these biological–abiotic interactions. Full article
(This article belongs to the Special Issue Aquatic Environmental Pollution and Ecotoxicological Studies)
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14 pages, 1720 KiB  
Article
Alexandrium catenella (Group I) Causes Higher and Faster Toxicity Than A. pacificum (Group IV) in Mytilus eduis
by Seok Jin Oh, Soo Yong Jeong and Moonho Son
Water 2024, 16(14), 1985; https://doi.org/10.3390/w16141985 - 12 Jul 2024
Viewed by 505
Abstract
Consuming poisoned shellfish can lead to severe health problems and even death. Alexandrium catenella (Group I) and A. pacificum (Group IV) cause paralytic shellfish poisoning (PSP) in Korea, and PSP is detected more in a wider area. However, the association between toxic dinoflagellates [...] Read more.
Consuming poisoned shellfish can lead to severe health problems and even death. Alexandrium catenella (Group I) and A. pacificum (Group IV) cause paralytic shellfish poisoning (PSP) in Korea, and PSP is detected more in a wider area. However, the association between toxic dinoflagellates and shellfish poisoning is unclear. Therefore, it is necessary to understand the toxicity, detoxification, and compositional differences in PSP in Mytilus edulis exposed to PSP caused by A. catenella and A. pacificum. High-performance liquid chromatography with post-column oxidation was used to analyze PSP toxicity in poisoned M. edulis. PSP in M. edulis increased as the A. catenella and A. pacificum cell density increased. However, the cell density of A. catenella peaked faster than that of A. pacificum, and a high level of toxicity was detected. In the detoxification experiment, PSP in M. edulis decreased rapidly within 24 h in filtered seawater. However, PSP was continuously detected without decreasing below the detection limit until the last day of the experiment. In addition, the carbamate composition (GTX1+4) was detected as the main toxic composition in poisoned M. edulis, unlike in vegetative cells. GTX1+4 can poison shellfish quickly when toxic dinoflagellates appear in the marine environment. However, poisoned shellfish take a long time to be completely detoxified. Moreover, if shellfish continuously feed on poisonous dinoflagellates, their toxicity can increase rapidly due to biotransformation. Our results can help identify the mechanisms of shellfish toxicity and detoxification after PSP caused by toxic dinoflagellates. Full article
(This article belongs to the Special Issue Aquatic Environmental Pollution and Ecotoxicological Studies)
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