scholarly journals Assessment of toxic potential of three different heavy metals to Clarias batrachus (Linn.) utilizing static acute bioassay

2014 ◽  
Vol 6 (1) ◽  
pp. 117-120 ◽  
Author(s):  
S.S. Gandhewar ◽  
S.B. Zade ◽  
S.R. Sitre
Keyword(s):  
Heavy Metals ◽  
Acute Toxicity ◽  
Short Duration ◽  
Clarias Batrachus ◽  
Toxicity Bioassay ◽  
Freshwater Catfish ◽  
Acute Bioassay ◽  
Toxic Potential

Acute toxicity bioassay of three different heavy metals copper (Cu), lead (Pb) and cadmium (Cd) for the freshwater catfish, Clarias batrachus were conducted for evaluation of the toxicity. The 96h LC50 values recorded for Cu, Pb and Cd were 15 ppm, 29 ppm and 35 ppm respectively. The results of this study indicate that the order of toxicity of these heavy metals is Cu>Pb>Cd in short duration acute toxicity experiments. The toxicity was found to be dependent on dose and duration of experiment for all these heavy metals. Cu was found to be much more toxic than Pb and Cd to C. batrachus.

Toxic effects of sub lethal concentration of dioctyl phthalate on the histology of liver of Clarias batrachus (Linn.).

2016 ◽  
Vol 5 (09) ◽  
pp. 4874
Author(s):  
Manisha Satpathi* ◽  
Ravinder Singh
Keyword(s):  
Acute Toxicity ◽  
Light Microscopy ◽  
Dioctyl Phthalate ◽  
Clarias Batrachus ◽  
Fresh Water Fish ◽  
Histopathological Changes ◽  
Histological Changes ◽  
Water Fish ◽  
Toxicity Effects ◽  
Plastic Products

Dioctyl phthalate (DOP) commonly used as plasticizer enters into aquatic environment from the industries manufacturing plastic products, PVC resins, cosmetics and many other commercial products. Therefore, this study was designed to evaluate the acute toxicity effects of Dioctyl phthalate on fresh water fish Clarias batrachus. The 96 hour LC50 of Dioctyl phthalate in Clarias batrachus was estimated as 14.5ml/L. Histopathological changes in liver of Clarias batrachus were determined by exposing them to a fraction of LC50(1/5th) dose with every change of water for 30 days.The liver of Clarias batrachus was excised at every interval of 30 days and histological changes of liver were studied under light microscopy. Liver tissues showed abnormalities. Centrilobular vacuolation, necrosis, eccentric nuclei and enlarged nuclei, Centrilobular degeneration of hepatocytes were observed in liver tissue of fish.

A multi-pumping flow system for acute toxicity bioassay using the Vibrio fischeri bacteria

2014 ◽  
Vol 6 (18) ◽  
pp. 7367-7373 ◽  
Author(s):  
Andressa Adame ◽  
Fábio R. P. Rocha
Keyword(s):  
Acute Toxicity ◽  
Vibrio Fischeri ◽  
Flow System ◽  
Toxicity Bioassay ◽  
Fast Determination ◽  
Line Sample

Fast determination of acute toxicity using the V. fischeri bacteria, including in-line sample dilutions and conditioning.

Optimization of microorganism preservation conditions for the development of an acute toxicity bioassay for biocides

Chemosphere ◽  
2019 ◽  
Vol 221 ◽  
pp. 45-54 ◽  
Author(s):  
Patrick Morkus ◽  
Mehdi Zolfaghari ◽  
Damien Parrello ◽  
Matthew Csordas ◽  
Mikayil Malikov ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Toxicity Bioassay ◽  
Preservation Conditions

scholarly journals Toxicity Effects of Selected Heavy Metals on Lactuca sativa and Hydra viridissima used for Sustainable Crop Production

2018 ◽  
Vol 7 (3) ◽  
pp. 82
Author(s):  
Lina Maria Caceres Diaz ◽  
Claudia Campos ◽  
Gideon Oron
Keyword(s):  
Heavy Metals ◽  
Acute Toxicity ◽  
Lactuca Sativa ◽  
Toxicity Test ◽  
Crop Production ◽  
Arid Regions ◽  
Toxicity Assessment ◽  
Agricultural Irrigation ◽  
Lactuca Sativa L ◽  
Toxicity Effects

This study examines the prospects for using Hydra viridissima toxicity test 96-h LC50, served as a model invertebrate, Lactuca sativa L. was applied for seeds toxicity test (120-h IC50) and a model plant for an acute toxicity assessment of heavy metals content in water. The heavy metals used to assess the acute toxicity of the water utilized for agricultural irrigation in arid regions includes cadmium (CdCl2.2H2O), chromium (K2Cr2O7), zinc (ZnSO4. 7H2O), and boron (H3BO3). A grading of the substances was conducted, and it was found that the toxicity levels for H. viridissima and L. sativa were, with the least harmful first: B < Cr < Zn < Cd and Zn < B < Cr < Cd, respectively. Results indicate that H. viridissima was a more sensitive indicator of toxicity for all of the evaluated substances. However, L. sativa could also be used successfully to rank toxicants in order of their potential hazards.

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