Comparative study of microcystin-LR-induced behavioral changes of two fish species,Danio rerio andLeucaspius delineatus

2004 ◽  
Vol 19 (6) ◽  
pp. 564-570 ◽  
Author(s):  
Daniela Baganz ◽  
Georg Staaks ◽  
Stephan Pflugmacher ◽  
Christian E. W. Steinberg
Keyword(s):  
Comparative Study ◽  
Fish Species ◽  
Danio Rerio ◽  
Behavioral Changes

scholarly journals A comparative study of the sulfation of bile acids and a bile alcohol by the Zebra danio (Danio rerio) and human cytosolic sulfotransferases (SULTs)

2011 ◽  
Vol 127 (3-5) ◽  
pp. 307-314 ◽  
Author(s):  
Katsuhisa Kurogi ◽  
Matthew D. Krasowski ◽  
Elisha Injeti ◽  
Ming-Yih Liu ◽  
Frederick E. Williams ◽  
...  
Keyword(s):  
Comparative Study ◽  
Bile Acids ◽  
Danio Rerio ◽  
Bile Alcohol

Liver Alterations in Two Freshwater Fish Species (Carassius auratus and Danio rerio) Following Exposure to Different TiO2 Nanoparticle Concentrations

2013 ◽  
Vol 19 (5) ◽  
pp. 1131-1140 ◽  
Author(s):  
Mário S. Diniz ◽  
António P. Alves de Matos ◽  
Joana Lourenço ◽  
Luísa Castro ◽  
Isabel Peres ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Freshwater Fish ◽  
Fish Species ◽  
Danio Rerio ◽  
Carassius Auratus ◽  
Tap Water ◽  
Light And Electron Microscopy ◽  
Partial Recovery ◽  
Activity Increase ◽  
Freshwater Fish Species

AbstractThe toxicity of titanium dioxide nanoparticles (TIO2 NPs) and oxidative stress effects were studied in two freshwater fish species (Carassius auratus and Danio rerio) exposed for 21 days to different concentrations (0.01, 0.1, 1, 10, 100/mgL) of TiO2 NPs and to a control (tap water). Additional fish were transferred to clean water for 14 days to assess the ability to recover from exposure to TiO2 NPs. Activities of the enzyme glutathione-S-transferase (GST) and lipid peroxidation (LPO) (malondialdheyde) were measured as indicators of oxidative stress. Histological and ultra-structural changes in livers from bothspecies of fish were evaluated by light and electron microscopy. Results show a general GST activity increase according to TiO2 NPs concentrations, which is in agreement with data from LPO. After 21 days, GST activities decreased possibly caused by suppression of GST synthesis as a result of severe stress. Histological and ultra-structural analysis of livers from exposed fish show degeneration of the hepatic tissue and alterations in hepatocytes such as glycogen depletion and an increase in lipofucsin lysosome-like granules. After a depuration period a partial recovery for biochemical markers and cells was observed. The results suggest that TiO2 promotes alterations in hepatic tissues compatible with oxidative stress.

scholarly journals The acute toxicity of clove oil to fish Danio rerio and Poecilia reticulata

2011 ◽  
Vol 80 (3) ◽  
pp. 305-308 ◽  
Author(s):  
Petra Doleželová ◽  
Stanislava Mácová ◽  
Lucie Plhalová ◽  
Vladimíra Pištěková ◽  
Zdeňka Svobodová
Keyword(s):  
Acute Toxicity ◽  
Fish Species ◽  
Danio Rerio ◽  
Poecilia Reticulata ◽  
Juvenile Fish ◽  
Probit Analysis ◽  
Model Organisms ◽  
Toxicity Tests ◽  
Clove Oil ◽  
Oil Composition

Clove oil (active substance eugenol) is an anaesthetic used in aquaculture for stress prevention and prevention of mechanical damage during veterinary procedures. The aim of this study was to determine the acute toxicity of clove oil in two aquarium fish species - zebrafish (Danio rerio) and guppy (Poecilia reticulata), which are considered the most commonly used model organisms in toxicity testing. The semi-static method according to OECD no. 203 (Fish, Acute toxicity test) was used for testing the toxicity of clove oil for juvenile fish. A series of 5 acute toxicity tests was performed, with 10 fish of both species used for each concentration and for the control. The results obtained (number of dead individuals at particular test concentrations) were subjected to a probit analysis using the EKO-TOX 5.2 program in order to determine 96hLC50 clove oil values. The significance of the difference between 96hLC50 values in D. rerio and P. reticulata was tested using the Mann-Whitney non-parametric test. The 96hLC50 mean value for clove oil was 18.2 ± 5.52 mg·l–1 in juvenile D. rerio and 21.7 ± 0.8 mg·l–1 in P. reticulata. In spite of variability in clove oil composition, acute toxicity values of clove oil for juvenile stages of both fish species were comparable. The results did not show different sensitivities to clove oil in tested fish species. This is the first similar study in these fish species.

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