scholarly journals Behavioral and morphological changes in fresh water fish, Channa punctatus under the exposure of Cadmium

2020 ◽  
Vol 21 (3) ◽  
pp. 187-193
Author(s):  
Neha Singh ◽  
Beenam Saxena
Keyword(s):  
Heavy Metal ◽  
Fresh Water ◽  
Metal Contamination ◽  
Cadmium Chloride ◽  
Heavy Metal Contamination ◽  
Morphological Changes ◽  
Behavioral Responses ◽  
Fresh Water Fish ◽  
Lc50 Value ◽  
Water Fish

Heavy metal contamination in fresh water bodies is of great concern owing to their toxicity, persistence and bioaccumulation. The current study deals with the acute toxicity of cadmium to fresh water fish, Channa punctatus. The objective of this study was to grasp the link between mortality and abnormal behavioral and morphological changes of C. punctatus exposed to cadmium chloride. Static bioassay tests were carried out to evaluate LC50 value of Cadmium (Cd) for fresh water fish, C. punctatus as well as the behavioral responses and morphological changes were also observed. Fish after treatment with various concentrations of cadmium chloride for different exposure period the percent mortality was recorded. The lowest cadmium chloride concentration at which mortality was observed as 45 mg/l. The first death of experimental fish was recorded as 125 mg/l at 24 hrs. of exposure. After 96 hrs. LC50 value of cadmium (Cd) was found to be 80.62mg/l. The major behavioral responses observed during the experiment were restlessness, jumping, erratic swimming, gulping of air at the surface, loss of equilibrium, sluggishness,opercular movements and fishes lied on the water surface before death and morphological changes like, discoloration of skin, pigmented patches on body, shedding of scales, sedimentation of chemical on body, mucous secretion, and ballooning were observed in exposed animals. The observed data showed that C.punctatus can be used as a good bio-indicator for heavy metal contamination in fresh water bodies.

scholarly journals A Study on Biochemical Changes in the Fresh Water Fish, Catla catla (Hamilton) Exposed to the Heavy Metal Toxicant Cadmium Chloride

1970 ◽  
Vol 3 (2) ◽  
pp. 1-11 ◽  
Author(s):  
K Sobha ◽  
A Poornima ◽  
P Harini ◽  
K Veeraiah
Keyword(s):  
Heavy Metal ◽  
Fresh Water ◽  
Cadmium Chloride ◽  
Soft Tissues ◽  
Lethal Dose ◽  
Catla Catla ◽  
Fresh Water Fish ◽  
Total Proteins ◽  
Biochemical Constituents ◽  
Free Aminoacids

Cadmium (Cd), one of the twenty three heavy metal toxicants, is widely used in Ni-Cd batteries manufacture, metal and mining industry, dentistry etc. because of its non-corrosive nature. Cd is released in considerable amounts through industrial effluents into soil, surface and ground water systems. These excess amounts in addition to naturally occurring levels gradually build up to toxic levels causing damage to the biota of the aquatic ecosystem. It shows biomagnification and has greater half-life periods. Cd was found to interfere with many protein and carbohydrate metabolisms by inhibiting the enzymes involved in the processes. The present study evaluates toxicity of Cd and its impact on biochemical constituents like glucose, glycogen, total proteins, lipid and free aminoacids in the fresh water edible carp Catla catla as Cd bioaccumulation can affect humans through biomagnification. Short term tests of acute toxicity were performed over a period of 96 hours using cadmium chloride. The renewal technique was followed by exposing the fish to test solutions of different concentrations in the range of 1 mg/L to 8 mg/L. Preliminary experiments were conducted to choose concentrations that resulted in the mortality of the fish in the range of 10-90%. The toxicity experiments were then conducted using the chosen concentrations of CdCl2 on the fingerlings ( Wt. 6±1 grams ) in triplicate and the LC50 was determined using simple graphic ( % Mortality Vs. Log Concentration), probit graphic ( Probit value Vs. Log concentration) and unweighted regression analysis methods. The calculated average 96-hr LC50 is 4.533 mg/L and the equation for the dose-mortality regression line was found to be Y = 2.65X + 3.368. Levels of the five biochemical constituents viz., Glucose, Glycogen, Total proteins, Lipids and Free aminoacids were determined by standard biochemical procedures in the five tissues i.e., muscle, gill, liver, heart and kidney of unexposed (Control) healthy fish and the fish exposed to 96-hr LC50 (Lethal) and sub-lethal concentrations (1/10th of the lethal dose for 7 days of exposure) of cadmium chloride. Results showed significant fall in all the biochemical constituents in all the tissues except glucose prompting to suggest that the fish cultured in the aquatic systems closer to the industrial locations would not have the expected nutritive value. The elevated levels of glucose are apparently indicative of the organism's response to the toxicant stress. Also, such fish when consumed as food lead to the deposition of the heavy metal in the soft tissues of the human body leading to exposure health effects. Key words: Toxicity; Heavy metal; Cadmium chloride; Biomagnification; Catla catla DOI: 10.3126/kuset.v3i2.2890  Kathmandu University Journal of Science, Engineering and Technology Vol.3, No.2, August 2007, pp 1-11

Heavy Metal Toxicity of Water of the Delhi Segment of River Yamuna to Fresh Water Fish Channa punctatus

2015 ◽  
Vol 4 (4) ◽  
pp. 405-410
Author(s):  
Arti Srivastava ◽  
Sohini Singh ◽  
Tanu Allen ◽  
Abhishek Dhiman
Keyword(s):  
Heavy Metal ◽  
Fresh Water ◽  
Metal Toxicity ◽  
Heavy Metal Toxicity ◽  
Channa Punctatus ◽  
Fresh Water Fish ◽  
Water Fish ◽  
River Yamuna

DESCRIPTION OF CIRCUMONCOBOTHRIUM SINGHII N.SP. FROM CLARIAS BATRACUS OF SAVITRI RIVER AT DAPOLI DISTRICT RATNAGIRI (M.S.) INDIA

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
R.R. DANDAWATE
Keyword(s):  
Life Cycle ◽  
Fresh Water ◽  
Summer Season ◽  
Fresh Water Fish ◽  
Water Fish

Present paper deals with study of cestode parasites of genus Circumoncobothrium from fresh water fish Clarius batracus at Savitri river, (Dapoli) for the percentages of infection occurance during summer season,minimum during winter and tolarate during rainy season.The parasite mainly infected the intestine of host and fed on nutrients from digested food. It completed its life cycle in the intestine of host. By camparing different characters of it to identify that the species is new

PREVALENCE OF PSEUDOINVERTA ORAIENSIS IN FRESH WATER FISH, CLARIAS BATRACHUS

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
ADITYA NARAYAN
Keyword(s):  
Fresh Water ◽  
Monsoon Season ◽  
Winter Season ◽  
Uttar Pradesh ◽  
Summer Season ◽  
Clarias Batrachus ◽  
Fresh Water Fish ◽  
Water Fish

The present investigation deals with the prevalence of infection of cestode, Pseudoinverta oraiensis19 parasitizing Clarias batrachus from Bundelkhand Region (U.P.) India. The studies were recorded from different sampling stations of Bundelkhand region of Uttar Pradesh. For this study 360 fresh water fish, Clarias batrachus were examined. The incidence of infection, monsoon season (17.50%) followed by winter season (20.00%) whereas high in summer season (30.00%).

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