Bioaccumulation of trace elements and hydrocarbons in chondrichthyans of the western Arabian Gulf: Environmental and human health risk assessment and implications for conservation

Lamia Yacoubi*, Radhouan Belgacem El Zrelli, Hua Hsun Hsu, Yu Jia Lin, Dario Savoca, Jinoy Gopalan, Mazen Nazal, Md Simul Bhuyan, Marco Arculeo, Lotfi Jilani Rabaoui

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This is a first attempt to assess the levels of trace elements, PAHs, and TPHs in six elasmobranch species (Carcharhinus dussumieri, C. sorrah, Chiloscyllium arabicum, Gymnura poecilura, Sphyrna lewini, S. mokarran) from the Arabian Gulf. The chemical analysis showed that the concentrations of contaminants differed significantly between liver and muscle samples with both pelagic and benthic species and all families. For all species, contaminant concentrations were significantly higher in the liver than in the muscle. While muscle contaminant concentrations differed significantly with respect to species' lifestyles and families, those of liver showed no significant differences between pelagic and benthic species, neither between the four families nor between the six species. None of the analysed contaminants exceeded the internationally recognized standards in all studied species. These results enrich the knowledge on the bioaccumulation of contaminants in elasmobranchs and allow to assess the environmental status of the Arabian Gulf.

Original languageEnglish
Article number165990
JournalScience of the Total Environment
Volume901
DOIs
StatePublished - 25 Nov 2023

Bibliographical note

Publisher Copyright:
© 2023

Keywords

  • Contaminants
  • Ecology
  • Marine ecosystems health status, Indian Ocean
  • Rays
  • Sharks
  • Trophic level

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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