Liver, gills, and skin histopathology and heavy metal content of the Danube sterlet (Acipenser ruthenus Linnaeus, 1758)
Autor: | Gorcin Cvijanovic, Dragana Djordjevic, Bozidar Raskovic, Ivan Jarić, Vesna Poleksić, Mirjana Lenhardt, Zoran Gačić |
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Rok vydání: | 2010 |
Předmět: |
0106 biological sciences
Gill Gills Health Toxicology and Mutagenesis Population chemistry.chemical_element Histopathology 010501 environmental sciences 01 natural sciences Toxicology Rivers Metals Heavy Environmental Chemistry Animals 14. Life underwater Acipenser ruthenus Water pollution education 0105 earth and related environmental sciences Skin Pollutant Cadmium education.field_of_study biology 010604 marine biology & hydrobiology Fishes Aquatic animal Sterlet biology.organism_classification Heavy metal pollution Mercury (element) chemistry Liver 13. Climate action Environmental chemistry Water Pollutants Chemical Environmental Monitoring |
Zdroj: | Environmental Toxicology and Chemistry |
ISSN: | 0730-7268 |
Popis: | 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. 2009;9999:1-7. # 2009 SETAC Keywords—Sterlet Histopathology Heavy metal pollution |
Databáze: | OpenAIRE |
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