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Toxicological Impacts of Pesticides on Aquatic Species: Mechanisms, Assessments, and...
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Toxicological Impacts of Pesticides on Aquatic Species: Mechanisms, Assessments, and Mitigation Strategies

A special issue of Fishes (ISSN 2410-3888).

Deadline for manuscript submissions: closed (31 October 2025) | Viewed by 334

Special Issue Editors

Dr. Yuhang Hong

E-Mail Website
Guest Editor
Key Laboratory of Animal Disease Detection and Prevention in Panxi District, Xichang University, Xichang 415000, China
Interests: aquatic toxicology; pesticides; crustaceans; oxidative stress
Dr. Cong Zhang

E-Mail Website
Guest Editor
College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China
Interests: stress physiology; aquatic toxicology; aquatic animal nutrition
Prof. Dr. Xiaozhen Yang

E-Mail Website
Guest Editor
Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
Interests: invertebrate physiology and immunology
Prof. Dr. Liulan Zhao

E-Mail Website
Guest Editor
College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
Interests: healthy aquaculture; fish physiology
Dr. Xiaowen Long

E-Mail Website
Guest Editor
College of Agriculture and Biological Science, Dali University, Dali 671003, China
Interests: physiology of aquatic animals
Dr. Meimei Liu

E-Mail Website
Guest Editor
Key Laboratory of Marine Biotechnology of Jiangsu Province, Jiangsu Ocean University, Lianyungang 222005, China
Interests: crustacean reproduction; crustacean and shellfish physiology; gonadal development; lipid metabolism; sexual differentiation

Special Issue Information

Dear Colleagues,

Aquatic ecosystems are particularly vulnerable to pesticide contamination, which can have profound impacts on aquatic species, including fish, crustaceans, and other non-target organisms. This Special Issue aims to explore the multifaceted toxicological effects of pesticides on aquatic species, delving into molecular, physiological, and behavioral disruptions. Emphasis will be placed on understanding the mechanisms of toxicity, assessing environmental risks, and identifying potential mitigation strategies.

Contributions are welcome from researchers across disciplines, including ecotoxicology, environmental chemistry, aquatic biology, and fisheries science. This Special Issue seeks to highlight recent advancements in experimental and computational approaches, policy implications, and sustainable solutions to reduce the impacts of pesticide pollution on aquatic ecosystems.

Dr. Yuhang Hong
Dr. Cong Zhang
Prof. Dr. Xiaozhen Yang
Prof. Dr. Liulan Zhao
Dr. Xiaowen Long
Dr. Meimei Liu
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

  • pesticides
  • aquatic toxicology
  • oxidative stress
  • antioxidative signaling pathways
  • functional diet
  • natural antioxidants

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

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Research

14 pages, 1632 KB  
Article
Extended Photoperiod Exposure Affects Imidacloprid Toxicity on Juvenile Crayfish Procambarus clarkii by Regulating Oxidative Stress and Neuroendocrine Pathways
by Yi Huang, Dongming Qi, Xiaoyan Li, Xiaodan Hu, Qiang Huang and Zhiqiu Huang
Fishes 2025, 10(11), 562; https://doi.org/10.3390/fishes10110562 - 4 Nov 2025
Abstract
Imidacloprid (IMI), a neonicotinoid insecticide, is widely recognized for its environmental persistence and toxicity to non-target aquatic organisms. Extended photoperiod exposure (EPE), an emerging anthropogenic stressor, further disrupts aquatic ecosystems by altering physiological and biological processes. However, their combined impacts on aquatic species [...] Read more.
Imidacloprid (IMI), a neonicotinoid insecticide, is widely recognized for its environmental persistence and toxicity to non-target aquatic organisms. Extended photoperiod exposure (EPE), an emerging anthropogenic stressor, further disrupts aquatic ecosystems by altering physiological and biological processes. However, their combined impacts on aquatic species remain insufficiently explored. This study evaluates the synergistic effects of IMI and EPE on Procambarus clarkii, an ecologically and economically significant crayfish species. Crayfish were exposed to 25 µg/L IMI under normal photoperiod (1000 lx, L:D = 12:12 h) and additional intensified and extended photoperiod (5000 lx, L:D = 18:6 h) treatments over one month. Key parameters, including survival rate, growth performance, oxidative stress markers, immune enzyme activities, neuroendocrine hormone levels, and gene expression, were assessed. The results indicate that EPE significantly amplifies the adverse effects of IMI. EPE reduced survival rates and growth performance, particularly in the 5000 lx group. IMI combined with EPE markedly elevated oxidative stress, as evidenced by increased malondialdehyde (MDA) levels and altered activities of superoxide dismutase (SOD) and catalase (CAT). Immune functions were impaired, with significant reductions in lysozyme (LZM) and acid phosphatase (ACP). Neuroendocrine disruption was observed through suppressed melatonin (MT) levels under EPE. Gene-expression analysis revealed upregulation of oxidative stress and apoptotic pathways (Cu/Zn-SOD, CAT and caspase-3) and downregulation of anti-apoptotic genes (bcl-2) and molt-inhibiting hormone (MIH). This study demonstrates that EPE exacerbates IMI-induced physiological and biochemical disruptions in P. clarkii. The findings highlight the pressing need for integrated management strategies addressing chemical and light pollution to protect aquatic ecosystems and sustain economically important species like crayfish. Full article
(This article belongs to the Special Issue Toxicological Impacts of Pesticides on Aquatic Species: Mechanisms, Assessments, and Mitigation Strategies)
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