Persistent organic pollutants and chlorpyrifos in tissues of a histotrophic viviparous species, the Southern Eagle Ray Myliobatis goodei.

Elasmobranchs are good indicators of marine pollution as they accumulate pollutants from water and food, and occupy different trophic levels. Concentrations of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and chlorpyrifos were quantified in muscle, liver, gonads, gills, and bra...

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Bibliographic Details
Published in:Marine Pollution Bulletin
Main Authors: Chierichetti, Melisa A, Vazquez, Nicolas D, Miglioranza, Karina S B, Ramirez, Cristina L, Roman, Jorge M, Scenna, Lorena B, Lo Nostro, Fabiana L
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier Science 2024
Subjects:
Elasmobranch
Histological analysis
PCBs
Pesticides
South Atlantic Ocean
Argentine
Online Access:https://doi.org/10.1016/j.marpolbul.2024.116573
https://pubmed.ncbi.nlm.nih.gov/38878415
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Summary:Elasmobranchs are good indicators of marine pollution as they accumulate pollutants from water and food, and occupy different trophic levels. Concentrations of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and chlorpyrifos were quantified in muscle, liver, gonads, gills, and brain in both sexes and maturity stages of the Southern Eagle Ray, Myliobatis goodei, captured in Argentine coastal waters. Moreover, possible histological alterations in the liver and gonads were analyzed. Pollutant concentrations were pervasive across all tissues, with PCBs > OCPs > chlorpyrifos. Elevated pollutant levels were notably found in the liver and gills. We identified thirty-six PCB congeners in tissues, with low-chlorine congeners prevailing. Among OCPs, ∑DDT and ∑endosulfan were predominant. Females exhibited higher pollutant levels in most tissues compared to males, except in the gonads, and adults generally displayed elevated pollutant levels. Histological analysis revealed the presence of atretic follicles and melanomacrophages (MM). Continuous monitoring of pollutant levels, alongside their effects on physiological and ecological traits, is imperative for effective management and conservation efforts.

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