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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Tousová, Zuzana Hilscherová, Klára Kuta, Jan Adam, Vojtech Hynek, David Kizek, René Bláha, Ludek |
| Description | Country affiliation: Czech Republic Author Affiliation: Tousová Z ( Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.); Kuta J ( Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.); Hynek D ( Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelská 1, 613 00, Brno, Czech Republic.); Adam V ( Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelská 1, 613 00, Brno, Czech Republic.); Kizek R ( Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelská 1, 613 00, Brno, Czech Republic.); Bláha L ( Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.); Hilscherová K ( Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic. hilscherova@recetox.muni.cz.) |
| Abstract | The goal of this study was to contribute to understanding of the mechanisms behind sensitivity differences between early and late instar larvae of Chironomus riparius and to address the influence of the differences in standard testing approaches on the toxicity evaluation. A 10-day contact sediment toxicity test was carried out to assess sensitivity to cadmium exposure in relation to different age and laboratory culture line origin of test organisms. Chironomid larvae of early (OECD 218 method) and late instar (US-EPA600/R-99/064 method) differed substantially in sensitivity of traditional endpoints (OECD: LOEC 50 and 10 µg Cd/g dry weight (dw); US-EPA: LOEC > 1000 and 100 µg Cd/g dw for survival and growth, respectively). Bioaccumulated cadmium and metallothioneins (MTs) concentrations were analyzed to investigate the role of MTs in reduced sensitivity to cadmium in late instar larvae. Metallothioneins were induced after treatment to greater Cd concentrations, but their levels in relation to cadmium body burdens did not fully explain low sensitivity of late instars to cadmium, which indicates some other effective way of detoxification in late instars. This study brings new information related to the role of MTs in age-dependent toxicant sensitivity and discusses the implications of divergence in data generated by chironomid sediment toxicity tests by standardized methods using different instars. |
| ISSN | 09441344 |
| Issue Number | 11 |
| Journal | Environmental Science and Pollution Research |
| Volume Number | 23 |
| e-ISSN | 16147499 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2016-06-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine |
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