Nature Environment and Pollution Technology

Md. Noor Alam ¹, Vijaya Lakshmi ¹, Sanjit Kumar Mishra ¹

Affiliations
1 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

The present paper deals with evaluation of acute toxicity of some popular and widely used insecticides like Endosulfan (O.C.), Malathion, Nuvacron, Nuvan, Dimecron (all O.P.) and Fenvalerate (pyrethroid) to the fingerlings of a carp, Labeo rohita. Among these insecticides Fenvalerate was found to be most toxic followed by Endosulfan, Malathion, Nuvacron, Dimecron and Nuvan, with their LC₅₀/96 hr values in the order: 0.20ppm < 0.4ppm < 0.75ppm < 1.00ppm < 1.25ppm < 5.0ppm respectively. Accordingly, the acute toxicity of these insecticides was found in order: Nuvan < Dimecron < Nuvacron < Malathion < Endosulfan < Fenvalerate. Suggestive measures include use of insecticide around fishery resources with precaution so that access of sprayed chemicals into the adjoining water bodies may be checked.

Keywords

Pesticides, Toxic Effects, Fingerlings, Labeo rohita.

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Vijaya Lakshmi ¹, Md. Noor Alam ¹

Affiliations
1 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

In the present investigation an attempt has been made to assess bimodal oxygen consumption in an air-breathing fish, Heteropneustes fossilis (Bloch.) under bayrusil (Quinalphos) exposure. The treatment of the fish with bayrusil brought significant decrease in total oxygen uptake as compared to the control but oxygen consumption through aerial route increased significantly in bayrusil treated fish. The increased dependency on aerial respiration might be due to avoidance of fish with the aquatic medium containing the toxicant.

Keywords

Pollutional Effect, Pesticide, Bayrusil, Oxygen Consumption, Heteropneustes fossilis.

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Sanjay Kumar Raju ¹, D. N. Sadhu ¹, Md. Noor Alam ²

Affiliations
1 Department of Zoology, St. Columba’s College, Hazaribag, Jharkhand, IN
2 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

The present research work is oriented to find out toxic effects of an organophosphate insecticide, parathion on a freshwater fish, Channa gachua. By following standard procedures for toxicity determination, it was found that 34.0, 33.0, 32.0 and 31.0 ppm of the parathion formed 24 h, 48 h, 72 h and 96 hours LC₅₀ doses, whereas LC₀ and LC₁₀₀ doses were 21.0 and 35.0 ppm respectively showing toxic nature of the insecticide.

Keywords

Parathion, Toxicity, Channa gachua, LC₅₀.

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Md. Noor Alam ¹, Sukant Sadhu ¹, Vijaya Lakshmi ¹

Affiliations
1 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

The present investigation is aimed to study the toxic effects of three agro-chemicals, endosulfan, indofil and dhanusan-50 on the tadpoles of Indian bullfrog, Rana tigrina. By following standard procedure for toxicity determination, it has been found that 96 hr/ LC₅₀ value of endosulfan was 1.5ppm, whereas for that of indofil and dhanusan-50, it was respectively 6.5 ppm and 8.0 ppm showing that endosulfan was most toxic and dhanusan-50 was least toxic. Some remarkable changes in the behaviour of the tadpoles in the toxic media of all the three agro-chemicals were observed such as agitated movement, hyperexcitability, bending and looping of body, surfacing movement, muscular weakness and finally death. The loss of these fish-food organisms have consequent effects on the ecosystem because of interrelationship of the organisms in the sense of food chain, and this adverse situation is destined to have an impact on the prospects of fish yields from the contaminated water areas.

Keywords

Agricultural Chemicals, Rana tigrina, Tadpoles, Endosulfan, Indofil, Dhanusan-50.

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S. K. Gupta ¹, N. P. Tiwari ¹, Md. Noor Alam ²

Affiliations
1 Department of Zoology, College of Commerce, Patna-800 020, Bihar, IN
2 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

Physicochemical characteristics of two ponds at Patna were studied for a period of one year in 2004-05. The investigation was focused on the determination of water quality parameters such as temperature, pH, DO, alkalinity, nitrite, nitrate and other factors showing that the water quality of these ponds comply with suitability of growth of some fishes.

Keywords

Fish Ponds, Physicochemical Status, Fish Growth, Correlation Analysis.

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Vijaya Lakshmi ¹, Md. Noor Alam ¹, Sukant Sadhu ¹

Affiliations
1 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

The paper deals with the effect of an agro-chemical, Bayrusil on the mortality and behaviour of a catfish Heteropneustes fossilis. It was inferred from the experiment that 38.0 and 41.0 ppm of the insecticide represented LC₅₀ and LC₁₀₀ doses respectively showing acutely toxic nature of the pesticide. Some remarkable changes were also observed in the fish in pesticidal media, such as thrilling and bending of body, jerky movement, surfacing and gulping air, dashing against the wall of container, frequent jumping, loss of balance, muscular weakness and finally death.

Keywords

Agro-Chemicals, Bayrusil, Heteropneustes fossilis, Bioassay Test, Behavioural Responses, LC₅₀.

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K. Roy ¹, Md. Noor Alam ²

Affiliations
1 Department of Zoology, Vinoba Bhave University, Hazaribagh-825 301, Jharkhand, IN
2 Department of Zoology, Giridih College, Giridih-815 301, Jharkhand, IN

Abstract

Effects of certain air pollutants on the peripheral blood of human population of Katras-Dhanbad area of Jharkhand state have been studied in this paper. People living in this area have suffered a lot due to pollutional effects in respect to changes in R.B.C. count, haemoglobin percentage and E.S.R.

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K. Roy ¹, Md. Noor Alam ², D. N. Sadhu ³

Affiliations
1 P.G. Dept. of Zoology, Vinoba Bhave University, Hazaribag, Jharkhand, IN
2 Dept. of Zoology, Giridih College, Giridih-815301, Jharkhand, IN
3 Dept. of Zoology, St. Columba’s College, Hazaribag, Jharkhand, IN

Abstract

In the present study, effects of coal dust and suspended particulate matter, present in the polluted air, on peripheral human blood, especially TLC and DLC, have been studied. It has been found that the people living in the coal field area of Katras-Dhanbad have suffered a lot in respect to variations in their TLC and DLC, and other diseases.

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