Effect of nitrite on early-life stages of common carp (Cyprinus carpio L.)

0341737 - ÚBO 2011 RIV US eng J - Journal Article
Kroupová, H. - Prokeš, Miroslav - Mácová, S. - Peňáz, Milan - Baruš, Vlastimil - Novotný, L. - Máchová, J.
Effect of nitrite on early-life stages of common carp (Cyprinus carpio L.).
Environmental Toxicology and Chemistry. Roč. 29, č. 3 (2010), s. 535-540. ISSN 0730-7268. E-ISSN 1552-8618.
[International Workshop on Aquatic Toxicology and Biomonitoring /1./. Vodňany, 27.08.2008-29.08.2008]
Institutional research plan: CEZ:AV0Z60930519
Keywords : Embryo–larval toxicity test * Lowest-observed-effect concentration * No-observed-effect concentration * Early development * Histopathology
Subject RIV: DN - Health Impact of the Environment Quality
Impact factor: 3.026, year: 2010

A one-month chronic exposure of common carp larvae and embryos to nitrite revealed significant differences in total accumulated mortality in fish exposed to 33, 67, and 330 mg/L NO2- compared with controls. At the highest concentration, all fish died within 8 d of exposure. Lethal concentrations of nitrite were estimated at 29dLC50=88 mg/L NO2-; LOEC=28 mg/L NO2-; and NOEC=7 mg/L NO2-. By day 12, fish exposed to 33 and 67 mg/L NO2- had significantly lower mass and total length compared with controls. No significant negative effects of nitrite at the concentrations tested (0.7-330 mg/L NO2-, at 10 mg/L Cl-) on hatching or embryo viability were demonstrated. Fish from all the concentrations showed a dose-related delay in development compared with the controls. Lordosis, kyphosis, scoliosis, body shortening, yolk sac and cardiac edema were observed at all concentrations and in controls. The incidence of these malformations was positively correlated with nitrite concentration.
Permanent Link: http://hdl.handle.net/11104/0184628