Assessment of organochlorine pesticide pollution in Donax trunculus from Agadir Bay (Center of Morocco): Utilization of integrated biomarkers

This study investigated the impact of seasonal organochlorine pesticide pollution on the physiological responses of Donax trunculus at Aghroud Beach during 2009 and 2010. Significant findings include the detection of six pesticides, with Endosulfan S being the most prevalent, reaching concentrations...

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Bibliographic Details
Published in:Regional studies in marine science 2024-12, Vol.78, p.103741, Article 103741
Main Authors: Agnaou, Mustapha, El Mourabit, Youssef, Nadir, Meryam, Alla, Aicha Ait, Oualid, Jaouad Abou, Bazzi, Lhoucine, Moukrim, Abdellatif
Format: Article
Language:English
Subjects:
Agadir Bay
Aghroud Beach
Biomarker
Donax trunculus
Organochlorine pesticide
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Summary:This study investigated the impact of seasonal organochlorine pesticide pollution on the physiological responses of Donax trunculus at Aghroud Beach during 2009 and 2010. Significant findings include the detection of six pesticides, with Endosulfan S being the most prevalent, reaching concentrations up to 62.63 ng/g dry weight. Biomarker analysis revealed notable seasonal variations, with the highest Acetylcholinesterase (AChE) activity in winter 2009 and the lowest in spring 2010. Glutathione S-transferase (GST) activity peaked in autumn 2009, while Catalase (Cat) showed maximum activity in autumns of 2009 and 2010. Malondialdehyde (MDA) levels were highest in summer 2010, indicating increased oxidative stress and lipid peroxidation during this period. Integrated Biomarker Response (IBR) values were highest in autumns, suggesting significant pollution stress. Principal Component Analysis (PCA) revealed strong correlations: a synergy between GST and Cat, and positive links between MDA and lipids, as well as AChE and Endosulfan B. This study highlights the efficacy of using integrated biomarker responses to assess environmental health and stresses the importance of autumn and summer monitoring due to higher pollution impacts. •Donax trunculus is used to monitor pollution levels by researchers.•Endosulfan S is the prevalent pesticide in Donax trunculus at Anza beach.•The correlation matrix reveals intricate pesticide-environment relationships.•Biomarker analysis shows heightened pollution stress in autumn and summer.
ISSN:2352-4855
2352-4855
DOI:10.1016/j.rsma.2024.103741