<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The circulation of the contents of Cu, Cd, and As was traced in the system of <italic>Chondrostoma nasus</italic> – <italic>Pomphorhynchus laevis</italic> – <italic>Contracaecum</italic> sp. – water – sediments from the Danube River in the Kudelin biotope. New data on the content of the elements examined are presented. The concentrations of the three elements in the materials studied, which included tissues, organs, and parasites of common nase, and water and sediments from the Kudelin biotope, were higher than the limits set forth in Bulgarian and international legislative documents. The bioindicator role of the tissues, organs, and parasites examined was revealed, and the liver of common nase and <italic>Contracaecum</italic> sp. were good bioindicators for Cd content, while <italic>P. laevis</italic> was a good bioindicator for As content.</p>
</abstract>

The circulation of the contents of Cu, Cd, and As was traced in the system of Chondrostoma nasus – Pomphorhynchus laevis – Contracaecum sp. – water – sediments from the Danube River in the Kudelin biotope. New data on the content of the elements examined are presented. The concentrations of the three elements in the materials studied, which included tissues, organs, and parasites of common nase, and water and sediments from the Kudelin biotope, were higher than the limits set forth in Bulgarian and international legislative documents. The bioindicator role of the tissues, organs, and parasites examined was revealed, and the liver of common nase and Contracaecum sp. were good bioindicators for Cd content, while P. laevis was a good bioindicator for As content.

Contents of Cu, Cd, and As in <italic>Chondrostoma nasus</italic>, <italic>Pomphorhynchus laevis</italic>, and <italic>Contracaecum</italic> sp. from an anthropogenically loaded segment of the Danube River in Bulgaria

Department of Agroecology and Environmental Protection, Faculty of Plant Protection and Agroecology

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Contents of Cu, Cd, and As in , , and  sp. from an anthropogenically loaded segment of the Danube River in Bulgaria

The circulation of the contents of Cu, Cd, and As was traced in the system of Chondrostoma nasus – Pomphorhynchus laevis – Contracaecum sp. – water – sediments...

Contents of Cu, Cd, and As in Chondrostoma nasus, Pomphorhynchus laevis, and Contracaecum sp. from an anthropogenically loaded segment of the Danube River in Bulgaria

Published Online: Jun 09, 2023

Page range: 54 - 63

Received: Sep 29, 2022

Accepted: Feb 11, 2023

DOI: https://doi.org/10.2478/aopf-2023-0006

Keywords
As, bioindication, Cd, common nase, Cu, Kudelin

© 2023 Petya G. Zaharieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Contents of Cu, Cd, and As in Chondrostoma nasus, Pomphorhynchus laevis, and Contracaecum sp. from an anthropogenically loaded segment of the Danube River in Bulgaria

Published Online: Jun 09, 2023

Page range: 54 - 63

Received: Sep 29, 2022

Accepted: Feb 11, 2023

DOI: https://doi.org/10.2478/aopf-2023-0006

KeywordsAs, bioindication, Cd, common nase, Cu, Kudelin

© 2023 Petya G. Zaharieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
As, bioindication, Cd, common nase, Cu, Kudelin