Agricultural-Derived organochlorine pesticide residues impact on macroinvertebrate community in an Afrotropical Stream.

Autor:	Ikayaja EO; Ecology and Environmental Biology Unit, Department of Animal Biology, School of Life Sciences, Federal University of Technology, P.M.B. 65, Minna, Niger State, Nigeria., Babalola GA; Department of Library and Information Science, Federal University of Technology, P.M.B. 65, Minna, Niger State, Nigeria., Zabbey N; Department of Fisheries, Faculty of Agriculture, University of Port Harcourt, PMB 5323, East-West Road, Choba, Rivers State, Nigeria., Arimoro FO; Ecology and Environmental Biology Unit, Department of Animal Biology, School of Life Sciences, Federal University of Technology, P.M.B. 65, Minna, Niger State, Nigeria.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2024 Jul 14; Vol. 10 (14), pp. e34606. Date of Electronic Publication: 2024 Jul 14 (Print Publication: 2024).
DOI:	10.1016/j.heliyon.2024.e34606
Abstrakt:	This study evaluated the impact of pesticide application through agricultural activities in Chanchaga River, Nigeria, using macroinvertebrate data sets obtained for six months (September 2021-February 2022). Four (4) stations, characterized by various agricultural activities, were sampled along the river. Analysis of the water samples for organochlorine pesticide residues (OCP) using Gas Chromatography-Mass Spectrometry (GC/MS) at the peak of the two seasons revealed a high concentration of eleven isomers of organochlorine, which ranged from 0.01 to 0.81 μg/L, and a mean concentration that was above international drinking water standards set by the World Health Organization, the Federal Environmental Protection Agency, and the European Union. The mean concentration of detected OCP was recorded as DDT (0.72 μg/L), Dieldrin (0.59 μg/L), Paraquat (0.54 μg/L), Aldrin (0.49 μg/L), Metribuzin (0.48 μg/L), Butachlor (0.47 μg/L), Alachlor (0.28 μg/L), Atrazine (0.23 μg/L), Phenol (0.10 μg/L), Endrin (0.09 μg/L), and Benzene (0.08 μg/L). Atrazine, alachlor, metribuzin, aldrin, phenol, and endrin showed significant differences across the two seasons (p < 0.05), while dieldrin, butachlor, paraquat, benzene, and DDT showed no significant differences across the two seasons (p > 0.05). A total of 622 macroinvertebrate individuals from 19 species in 18 families from 8 orders were collected. More individuals were collected during the dry season (58.17 %) and the wet season (41.83 %). Canonical Correspondence Analysis (CCA) ordination revealed a strong relationship between species abundance and some organochlorine pesticide residues such as DDT, endrin, metribuzin, atrazine, benzene, and dieldrin. The response of macroinvertebrates to OCP indicates that Chanchaga River is a disturbed river, and the indicator organisms (Lestes sp., Coenagrion sp., Zyxomma sp., Appasus sp., Chironomus sp., Lymnaea natalensis, and Caridina nililotica) can also be used for further biomonitoring. Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Eunice ojoma Ikayaja reports financial support was provided by African Water Resources Mobility 10.13039/100031212Network (AWaRMN). If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2024 The Authors.)
Databáze:	MEDLINE
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