Features of polychlorinated biphenyls accumulation in Baikal fishes (initial results)

Authors

  • Kustova O.V. 1 ID
  • Bogdanov B.E. 1 ID
  • Anoshko P.N. 1 ID
  • Gorshkov A.G. 1 ID
    • 1 Limnological Institute Siberian Branch of the Russian Academy of Sciences, Ulan-batorskaya Str., 3, Irkutsk, 664033, Russia

DOI:

https://doi.org/10.31951/2658-3518-2025-A-6-1402

Keywords:

polychlorinated biphenyls, bioaccumulation, demersal (benthic) and pelagic fish species, Lake Baikal

Abstract

A detailed systematic analysis of the content of polychlorinated biphenyls (PCBs) in various Baikal fish species was conducted for the first time. Accumulation levels of indicator and dioxin-like PCBs were determined in the muscles of five species of Baikal sculpins of the family Cottidae: Abyssocottus pallidus, Abyssocottus godlewskii, Abyssocottus platycephalus, Leocottus kesslerii and Cottocomephorus comephoroides, and of two species of the family Coregonidae: Coregonus baicalensis and Coregonus migratorius. The features of pollutants accumulation by various fish species depending on habitat specificity and feeding ecology are revealed. The total toxic equivalents of dioxin-like PCBs were calculated despite their extremely low concentrations in the water of Lake Baikal.

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Published

2025-12-25

Issue

2025: №6 (December)

Section

Articles

License

Copyright (c) 2025 Limnology and Freshwater Biology

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Creative Commons License
This work is distributed under the Creative Commons Attribution-NonCommercial 4.0 International License.