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Assessment of fish health status in the Upper Danube River by investigation of ultrastructural alterations in the liver of barbel Barbus barbus
Aquatic Ecology and Toxicology Section, Department of Zoology, University of Heidelberg, Im Neuenheimer Feld, Heidelberg, Germany.
Aquatic Ecology and Toxicology Section, Department of Zoology, University of Heidelberg, Im Neuenheimer Feld, Heidelberg, Germany. (MTM)ORCID iD: 0000-0002-2356-6686
Aquatic Ecology and Toxicology Section, Department of Zoology, University of Heidelberg, Im Neuenheimer Feld, Heidelberg, Germany.
Aquatic Ecology and Toxicology Section, Department of Zoology, University of Heidelberg, Im Neuenheimer Feld, Heidelberg, Germany.
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2010 (English)In: Diseases of Aquatic Organisms, ISSN 0177-5103, E-ISSN 1616-1580, Vol. 23, 235-248 p.Article in journal (Refereed) Published
Abstract [en]

Despite intensive efforts and tightened guidelines for improvement of water quality over the last 2 decades, declines of fish populations have been reported for several rivers around the world. The present study forms part of a comprehensive weight-of-evidence approach, which aims to identify potential causes for the decline in fish catches observed in the Upper Danube River. The major focus of the present study is the investigation of the health status of wild barbel Barbus barbus L. collected from 3 locations along the Danube River, which experienced different levels of contamination. Whereas the comparison of the condition factor (CF) of field fish with that of control fish revealed no differences, ultrastructural investigations indicated severe disturbance of hepatic cell metabolism in field fish from the more contaminated sites Rottenacker and Ehingen, compared to both control fish and field fish from the less contaminated site Riedlingen. The ultrastructural analysis provided information about reactions of e.g. the rough endoplasmic reticulum, peroxisomes, andmitochondria, indicating an impaired health status of barbel at the sampling sites Rottenacker and Ehingen. Even though a straightforward cause-effect relationship between sediment contamination and ultrastructural alterations could not be established, based on a meta-analysis and toxicity assays it may be suggested that sediment-bound xenobiotics at least partly account for the hepatocellular changes. A relationship between impaired fish health status and the decline of fish catches along the Upper Danube River cannot be excluded.

Place, publisher, year, edition, pages
Luhe, Germany: Inter-Research , 2010. Vol. 23, 235-248 p.
Keyword [en]
Danube River, Fish, Population decline, Liver ultrastructure, Barbus barbus, Condition factor, Sediment
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-39655DOI: 10.3354/dao02159ISI: 000275582400007PubMedID: 20377013Scopus ID: 2-s2.0-77951634576OAI: oai:DiVA.org:oru-39655DiVA: diva2:771497
Available from: 2014-12-14 Created: 2014-12-14 Last updated: 2017-12-05Bibliographically approved

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