Acute toxicity of metal cyanides to Indian major carp Labeo rohita (Hamilton)

Static renewal bioassay tests were carried out to determine the acute toxicity (LC50) of metal cyanides to the Indian major carp Labeo rohita. The 96 hour LC50 value for the sodium cyanide, zinc cyanide and copper cyanide to the fish L. rohita were 0.32 mg/L 0.35 mg/L, and 1.1 mg/L respectively. Among the metal cyanide tested, sodium cyanide is found to be more toxic than the other cyanide complexes. In general behavioral responses of the fishes exposed to cyanide included uncontrolled swimming, erratic movements, loss of balance, moving spiral fashion with sudden jerky movements, vertical movements lying on the sides of the test chamber and rapid flapping of the opercular movements with opened mouth finally settles to the bottom.

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Behavior surveillance and oxygen consumption in the freshwater fish Labeo rohita (Hamilton) exposed to sodium cyanide

Biotechnology in Animal Husbandry ◽

10.2298/bah1002091d ◽

2010 ◽

Vol 26 (1-2) ◽

pp. 91-103 ◽

Cited By ~ 10

Author(s):

P.N. Dube ◽

B.B. Hosetti

Keyword(s):

Oxygen Consumption ◽

Freshwater Fish ◽

Labeo Rohita ◽

Test Chamber ◽

Sublethal Concentration ◽

Sodium Cyanide ◽

Toxicity Tests ◽

Lc50 Value ◽

Toxic Pollutant ◽

Sublethal Concentrations

Sodium cyanide, is highly contaminating aquatic ecosystems as a toxic pollutant, was investigated in the present study for acute toxicity on freshwater fish Labeo rohita. The toxicity tests were conducted by static renewal bioassay method on the juveniles of fish was evaluated. The LC50 value of sodium cyanide to Labeo rohita was found out to be 320 ?g l-1. One third (106 ?g l-1) and one fifth (64 ?g l-1) of the LC50 value was selected for sublethal studies. Behavioural patterns and oxygen consumption were observed in both (1/3rd and 1/5th) sublethal concentrations (1, 5, 10 and 15 days). Sodium cyanide is highly toxic to the animal tested. Fish behaved irregular, erratic, and dartic movements, by followed hyperexcitability, loss of balance, finally settles to the bottom of the test chamber. A decrease in oxygen consumption was observed in 1/3rd (11.62% and -4.52%) and 1/5th (9.11% and -2.82%) sublethal concentrations. Fish under sublethal concentration were found to be under stress but not fatal.

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Acute and sublethal intoxication of malathion in an Indian major carp, Labeo rohita: haematological and biochemical responses.

Environmental Analysis Health and Toxicology ◽

10.5620/eaht.2021016 ◽

2021 ◽

Vol 36 (3) ◽

pp. e2021016

Author(s):

Juginu Mankuzhiyil Sivanandan ◽

Binukumari

Keyword(s):

Sublethal Effects ◽

Labeo Rohita ◽

Hematological Parameters ◽

Organophosphorus Pesticide ◽

Control Group ◽

Indian Major Carp ◽

Biochemical Responses ◽

Lc50 Value ◽

Hematological And Biochemical Parameters ◽

The Impact

This study aimed to determine the median lethal concentration (96-h LC50), acute and sublethal effects of malathion, an organophosphorus pesticide on hematological and biochemical responses in an Indian major carp, Labeo rohita. In this study, the LC50 value of malathion for 96 h was found to be 3.4 ppm. During acute (3.4 ppm) and sublethal [1/10th of 96 h LC50 value (0.34 ppm) studies, all the hematological parameters except WBC were significantly decreased (p<0.05). Besides, when compared with the control group, a significant (p<0.05) decrease in biochemical activity was also observed in malathion treated fish during acute and sublethal exposure periods. These results suggest that the tested concentrations of malathion could have significant adverse effects on the hematological and biochemical parameters of fish, Labeo rohita. The changes in the parameters can be effectively used to determine the impact of malathion in the aquatic ecosystem.

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Effect of exposure to sublethal concentrations of sodium cyanide on the carbohydrate metabolism of the Indian Major Carp Labeo rohita (Hamilton, 1822)

Pesquisa Veterinária Brasileira ◽

10.1590/s0100-736x2013000700012 ◽

2013 ◽

Vol 33 (7) ◽

pp. 914-919 ◽

Cited By ~ 4

Author(s):

Praveen N. Dube ◽

Shwetha Alavandi ◽

Basaling B. Hosetti

Keyword(s):

Carbohydrate Metabolism ◽

Labeo Rohita ◽

Sodium Cyanide ◽

Indian Major Carp ◽

Sublethal Concentrations

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Determination of 96 h LC50 Value and Acute Toxicity of Marshal (Carbosulfan 25%EC) on Thyroid and Reproductive Hormones of Labeo rohita (Hamilton)

Vol. 5, No. 1 - International Journal of Zoological Investigations ◽

10.33745/ijzi.2021.v07i01.008 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Dey Chandrima ◽

Saha Samir Kumar

Keyword(s):

Labeo Rohita ◽

Probit Analysis ◽

Reproductive Hormones ◽

Mortality Data ◽

Indian Major Carp ◽

Lc50 Value ◽

Serum T3 ◽

Fish Productivity ◽

Carbamate Pesticide

Contamination of water bodies by pesticides can lead to fish death and reduced fish productivity etc. which can affect humans consuming these fishes as a source of protein. The present study was designed to determine the 96h LC50 value of a carbamate pesticide, Marshal (Carbosulfan 25%EC) and to investigate effects of this pesticide on the thyroid and reproductive hormones profile of Indian major carp Labeo rohita (Hamilton). The present study indicates that Marshal has potential hormonal stress on Labeo rohita. The mortality data obtained were analyzed by SPSS 16.0 based on Finney’s Probit Analysis Statistical method. The 96h LC50 value for Marshal was found to be 10 ?l/L. Effects of this carbamate pesticide on serum T3, T4 and TSH, testosterone and estradiol were investigated at sub-lethal concentration. Serum T3, T4 and TSH were studied for 96 h and testosterone and estradiol for 4 days and 15 days. These parameters (except TSH) decrease after exposure of the fish to pesticide.

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