Liver, gills, and skin histopathology and heavy metal content of the Danube sterlet (Acipenser ruthenus Linnaeus, 1758)
Open Access
- 10 December 2009
- journal article
- research article
- Published by Wiley in Environmental Toxicology and Chemistry
- Vol. 29 (3), 515-521
- https://doi.org/10.1002/etc.82
Abstract
The sterlet (Acipenser ruthenus L.) is a bottom-feeding fish species with a direct exposure to contaminants from water and sediments. Although heavy metal pollution is believed to be one of the main threats to the sterlet population in the Danube River basin, there is a lack of knowledge of the exact impact of heavy metals on their survival. In the present study, effects of heavy metal pollution on sterlet in the Danube basin were assessed as well as the utility of different sterlet organs and tissues as indicators of heavy metal contamination. The sterlet were sampled at three different sites in the Danube basin, in Hungary and Serbia, isolated from each other by dams. Heavy metal analysis included measurement of Cd, As, Pb, Cr, Hg, Cu, Ni, Fe, Mn, and Zn concentrations in sterlet gills, muscle, liver, and intestine, and histopathological analyses comprised assessment and scoring of the extent and intensity of alterations in skin, gills, and liver tissue. Analysis revealed a significant presence of sublethal histopathological changes that were most pronounced in the liver and skin and increased accumulation of heavy metals, with the highest concentrations in the liver. Canonical discriminant analysis showed significant differentiation among the three studied localities, suggesting that the heavy metal concentrations in sterlet populations were site specific. The present study concludes that the accumulation of heavy metals is a response to the presence of these pollutants in the environment, and, together with other pollutants, it affects the vital organs of natural sterlet populations. Environ. Toxicol. Chem. 2010;29:515–521. © 2009 SETACKeywords
This publication has 17 references indexed in Scilit:
- Histopathological gill changes in wild leaping grey mullet (Liza saliens) from the Esmoriz‐Paramos coastal lagoon, PortugalEnvironmental Toxicology and Water Quality, 2007
- Assessment of fish health status in four Swiss rivers showing a decline of brown trout catchesAquatic Sciences, 2007
- Concentrations of Metals in Water, Sediment, Biofilm, Benthic Macroinvertebrates, and Fish in the Boulder River Watershed, Montana, and the Role of Colloids in Metal UptakeArchives of Environmental Contamination and Toxicology, 2007
- Sturgeons in the Slovakian rivers of the Danube River basin: an overview of their current status and proposal for their conservation and restorationJournal of Applied Ichthyology, 2006
- Status, trends and management of sturgeon and paddlefish fisheriesFish and Fisheries, 2005
- Heavy metal bioavailability and effects: II. Histopathology–bioaccumulation relationships caused by mining activities in the Gulf of Cádiz (SW, Spain)Chemosphere, 2005
- Concentrations of trace elements in muscle of sturgeons in the Caspian SeaMarine Pollution Bulletin, 2004
- Assessment of bioaccumulated metal and organochlorine compounds in relation to physiological biomarkers in Kootenai River white sturgeonJournal of Applied Ichthyology, 2002
- Histopathology in fish: proposal for a protocol to assess aquatic pollutionJournal of Fish Diseases, 1999
- Hepatocellular adaptation to extreme nutritional conditions in ide,Leuciscus idus melanotus L. (Cyprinidae). A morphofunctional analysisFish Physiology and Biochemistry, 1988