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Papers by dr mahesh Tharani

Indian Journal of Animal Research, 2014

In the present work, seasonal variations of zooplankton and selected physico-chemical parameters ... more In the present work, seasonal variations of zooplankton and selected physico-chemical parameters were studied in Jiasamand Lake, a large man-made reservoir in Udaipur (Rajasthan). In the study period, 51 species of zooplankton-17 species of Rotifera, 18 species of Cladocera, 5 species of Ostracoda and 4 species of Copepoda were observed. Among zooplankton, Rotifera was (727 No.l-1) observed as the dominant group throughout the study period and the highest count was recorded in the summer or pre-monsoon period while low incidence was observed in winter season. Zooplankton community is also correlated with certain physico-chemical parameters. The results of this study indicate that the distribution and density of zooplankton species were influenced by prevailing physical and chemical factors of the aquatic environment.

Biomedical and Pharmacology Journal, Mar 25, 2015

Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, li... more Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, lipids, proteins minerals and water which may in influence the growth and metamorphosis of the larvae. if the diet does not contain all the mineral nutrients, the growth and metabolisms is affected adversely which may lead deformation in cocoon formations as well as the quality of the silk. The paper reports the lipid profile of mulberry leaves and its effects on growth and metabolism of the larve.

Biomedical and Pharmacology Journal, 2010

Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, li... more Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, lipids, proteins minerals and water which may in influence the growth and metamorphosis of the larvae. if the diet does not contain all the mineral nutrients, the growth and metabolisms is affected adversely which may lead deformation in cocoon formations as well as the quality of the silk. The paper reports the lipid profile of mulberry leaves and its effects on growth and metabolism of the larve.

Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominate... more Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominated by the quality of their environment. Pollution of water bodies forces them to acclimatize to various factors thus imposing a considerable amount of stress on their lives. Phosphatase is known to be sensitive to metal exposures and can be used to predict metal toxicity. The acid phosphatase (ACP) and alkaline phosphatase (ALP) enzyme activity brought an decrease in acid and alkaline phosphatase (ACP and ALP) in Liver and Kidney when a freshwater fish Labeo rohita exposed to Heavy Metal concentration as compared to the control group. The various concentrations of the heavy metals were found to alter the acidic and alkaline phosphatase activity in the studied organs. Hence, the results from present investigations may be useful in the assessment of environmental stress in the aquatic ecosystem.

Discharge of heavy metals into aquatic environment from various sources even below permissible le... more Discharge of heavy metals into aquatic environment from various sources even below permissible levels, creates health hazards in aquatic organisms. The persistence and ubiquitous nature of these pollutant compounds coupled with their tendency to accumulate in organisms ultimately produce toxic reaction in aquatic biota especially, fish. This study aims to investigate histopathological impact of lethal concentration (1.0625 ppm, 1.4202ppm) and sublethal concentration (0.1062ppm, 0.0531ppm and 0.1420ppm, 0.0710ppm) concentrations of zinc sulphate and copper sulphate in liver of fresh water teleost,Clarias batrachus(Ham). The histopathology studies revealed vacuolation in cytoplasm, degeneration of nuclei, vacuolation in stroma, cloudy swellings, pycnotic nuclei, necrosis, rupture of blood sinusoids, disarray of hepatic cords, loss of shape of hepatocytes. Severity of damage was found to be dose dependent and time of exposure.

International Journal of Pharmaceutical Biological Archive, 2013

Present investigation deals with the quantitative and qualitative information on seasonal variati... more Present investigation deals with the quantitative and qualitative information on seasonal variations of phytoplanktons on Pahuj reservoir in Jhansi (U.P). Phytoplankton which are present in natural water bodies respond to the ecological factors. Phytoplankton's play an important role as food for herbivorous animals (primary production) and acts as biological indicators of water quality in pollution studies. Hence the present study was carried out on Pahuj reservoir in Jhansi(U.P).During the study 15 species of Chlorophyceae,7 species belonging to family Bacilariophyceae,6 species of Myxophyceae and 1 species of Desmokontae were collected at different sites of Pahuj reservoir.

Discharge of heavy metals into aquatic environment from various sources even below permissible le... more Discharge of heavy metals into aquatic environment from various sources even below permissible levels, creates health hazards in aquatic organisms. The persistence and ubiquitous nature of these pollutant compounds coupled with their tendency to accumulate in organisms ultimately produce toxic reaction in aquatic biota especially, fish. The present study deals with the toxicity of copper as (CuSO4), as a component of industrial waste and its effect on tissue protein at 24, 48, 72 and 96h. The LC50 values were found at 180 ppm, 88 ppm, 40 ppm and 20 ppm for 24, 48, 72 and 96h respectively. The estimated protein concentration in the tissues-gills, liver, kidney, ovary and testis were found to be reduced during the exposure periods. Maximum reduction in protein level in the tissues was found at 96h.

Industrial effluent containing heavy metals on entering aquatic environment causes biochemical di... more Industrial effluent containing heavy metals on entering aquatic environment causes biochemical disturbances in the fish. The present study deals with the effect of Zinc as (ZnSO4), as a component of industrial waste and its effect on tissue glycogen and protein level at 24, 48, 72 & 96 hrs respectively. The estimated glycogen and protein concentration in the tissues- gills, liver, kidney, ovary and testis were found to be reduced during the exposure periods.

The main aim of the present study is to know the effect of heavy metals in Tawa reservoir on Labe... more The main aim of the present study is to know the effect of heavy metals in Tawa reservoir on Labeo rohita and their seasonal variations. During the study, Labeo rohita were exposed to pre monsoon, monsoon and post monsoon seasons at different sites in Tawa reservoir. The red blood cell (RBC) count decreases when compared to the control 3.42±0.47 x 10 6 /mm 3 , pre monsoon (2.93±0.49 x 10 6 /mm 3 ), monsoon (2.81±0.47 x 10 6 /mm 3 ) and post monsoon (2.90±0.50 x 10 6 /mm 3 ) periods. The Heamoglobin percentage also decreases when compared with the controlled fish (9.16±0.75%), pre monsoon (8.73±0.14%) , monsoon (7.43±0.35%) and post monsoon seasons (8.71±0.16%). The number of white blood cells (WBC) increases more during monsoon period (5.80±0.32 x10 3 /mm 3 ) as compared to control (4.63±0.37 x10 3 /mm 3 ), pre monsoon (5.03±0.54 x10 3 /mm 3 ) and post monsoon seasons (5.47±0.54x10 3 /mm 3 ).The Haematocrit value decreases from control group of fishes to

Industrial effluent containing heavy metals, on entering aquatic environment causes histopatholog... more Industrial effluent containing heavy metals, on entering aquatic environment causes histopathological and haematological disturbances in the fish. The present study deals with the sub-lethal effects of copper on the humoral, enzymological and histopathological parameters in the teleost fish, Clarias batrachus and the curative capacity of vitamin C were investigated. The 96 hour LC50 value of copper was determined using Probit method and was found to be 1.74 mg/L. Fish blood from two sub-lethal concentrations, vitamin supplemented media and toxicant and vitamin free control were analyzed on 7th, 14th, 21st and 28th day of exposure. The haemoglobin (Hb), haematocrit (Hct), erythrocyte count (RBC) and oxygen carrying capacity were reduced compared to the control values up to the day 21 followed by a significant increase (p<0.0001) in all test concentrations on the day 28. The microscopic observation of RBCs in higher concentrations and long exposure showed crenation, immature RBCs w...

Biosciences Biotechnology Research Asia, 2009

Indian Journal of Animal Research, 2014

In the present work, seasonal variations of zooplankton and selected physico-chemical parameters ... more In the present work, seasonal variations of zooplankton and selected physico-chemical parameters were studied in Jiasamand Lake, a large man-made reservoir in Udaipur (Rajasthan). In the study period, 51 species of zooplankton-17 species of Rotifera, 18 species of Cladocera, 5 species of Ostracoda and 4 species of Copepoda were observed. Among zooplankton, Rotifera was (727 No.l-1) observed as the dominant group throughout the study period and the highest count was recorded in the summer or pre-monsoon period while low incidence was observed in winter season. Zooplankton community is also correlated with certain physico-chemical parameters. The results of this study indicate that the distribution and density of zooplankton species were influenced by prevailing physical and chemical factors of the aquatic environment.

Biomedical and Pharmacology Journal, Mar 25, 2015

Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, li... more Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, lipids, proteins minerals and water which may in influence the growth and metamorphosis of the larvae. if the diet does not contain all the mineral nutrients, the growth and metabolisms is affected adversely which may lead deformation in cocoon formations as well as the quality of the silk. The paper reports the lipid profile of mulberry leaves and its effects on growth and metabolism of the larve.

Biomedical and Pharmacology Journal, 2010

Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, li... more Bombyx mori mainly feeds upon the tender leaves of Morus alba. The leaf contains such as fats, lipids, proteins minerals and water which may in influence the growth and metamorphosis of the larvae. if the diet does not contain all the mineral nutrients, the growth and metabolisms is affected adversely which may lead deformation in cocoon formations as well as the quality of the silk. The paper reports the lipid profile of mulberry leaves and its effects on growth and metabolism of the larve.

Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominate... more Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominated by the quality of their environment. Pollution of water bodies forces them to acclimatize to various factors thus imposing a considerable amount of stress on their lives. Phosphatase is known to be sensitive to metal exposures and can be used to predict metal toxicity. The acid phosphatase (ACP) and alkaline phosphatase (ALP) enzyme activity brought an decrease in acid and alkaline phosphatase (ACP and ALP) in Liver and Kidney when a freshwater fish Labeo rohita exposed to Heavy Metal concentration as compared to the control group. The various concentrations of the heavy metals were found to alter the acidic and alkaline phosphatase activity in the studied organs. Hence, the results from present investigations may be useful in the assessment of environmental stress in the aquatic ecosystem.

Discharge of heavy metals into aquatic environment from various sources even below permissible le... more Discharge of heavy metals into aquatic environment from various sources even below permissible levels, creates health hazards in aquatic organisms. The persistence and ubiquitous nature of these pollutant compounds coupled with their tendency to accumulate in organisms ultimately produce toxic reaction in aquatic biota especially, fish. This study aims to investigate histopathological impact of lethal concentration (1.0625 ppm, 1.4202ppm) and sublethal concentration (0.1062ppm, 0.0531ppm and 0.1420ppm, 0.0710ppm) concentrations of zinc sulphate and copper sulphate in liver of fresh water teleost,Clarias batrachus(Ham). The histopathology studies revealed vacuolation in cytoplasm, degeneration of nuclei, vacuolation in stroma, cloudy swellings, pycnotic nuclei, necrosis, rupture of blood sinusoids, disarray of hepatic cords, loss of shape of hepatocytes. Severity of damage was found to be dose dependent and time of exposure.

International Journal of Pharmaceutical Biological Archive, 2013

Present investigation deals with the quantitative and qualitative information on seasonal variati... more Present investigation deals with the quantitative and qualitative information on seasonal variations of phytoplanktons on Pahuj reservoir in Jhansi (U.P). Phytoplankton which are present in natural water bodies respond to the ecological factors. Phytoplankton's play an important role as food for herbivorous animals (primary production) and acts as biological indicators of water quality in pollution studies. Hence the present study was carried out on Pahuj reservoir in Jhansi(U.P).During the study 15 species of Chlorophyceae,7 species belonging to family Bacilariophyceae,6 species of Myxophyceae and 1 species of Desmokontae were collected at different sites of Pahuj reservoir.

Discharge of heavy metals into aquatic environment from various sources even below permissible le... more Discharge of heavy metals into aquatic environment from various sources even below permissible levels, creates health hazards in aquatic organisms. The persistence and ubiquitous nature of these pollutant compounds coupled with their tendency to accumulate in organisms ultimately produce toxic reaction in aquatic biota especially, fish. The present study deals with the toxicity of copper as (CuSO4), as a component of industrial waste and its effect on tissue protein at 24, 48, 72 and 96h. The LC50 values were found at 180 ppm, 88 ppm, 40 ppm and 20 ppm for 24, 48, 72 and 96h respectively. The estimated protein concentration in the tissues-gills, liver, kidney, ovary and testis were found to be reduced during the exposure periods. Maximum reduction in protein level in the tissues was found at 96h.

Industrial effluent containing heavy metals on entering aquatic environment causes biochemical di... more Industrial effluent containing heavy metals on entering aquatic environment causes biochemical disturbances in the fish. The present study deals with the effect of Zinc as (ZnSO4), as a component of industrial waste and its effect on tissue glycogen and protein level at 24, 48, 72 & 96 hrs respectively. The estimated glycogen and protein concentration in the tissues- gills, liver, kidney, ovary and testis were found to be reduced during the exposure periods.

The main aim of the present study is to know the effect of heavy metals in Tawa reservoir on Labe... more The main aim of the present study is to know the effect of heavy metals in Tawa reservoir on Labeo rohita and their seasonal variations. During the study, Labeo rohita were exposed to pre monsoon, monsoon and post monsoon seasons at different sites in Tawa reservoir. The red blood cell (RBC) count decreases when compared to the control 3.42±0.47 x 10 6 /mm 3 , pre monsoon (2.93±0.49 x 10 6 /mm 3 ), monsoon (2.81±0.47 x 10 6 /mm 3 ) and post monsoon (2.90±0.50 x 10 6 /mm 3 ) periods. The Heamoglobin percentage also decreases when compared with the controlled fish (9.16±0.75%), pre monsoon (8.73±0.14%) , monsoon (7.43±0.35%) and post monsoon seasons (8.71±0.16%). The number of white blood cells (WBC) increases more during monsoon period (5.80±0.32 x10 3 /mm 3 ) as compared to control (4.63±0.37 x10 3 /mm 3 ), pre monsoon (5.03±0.54 x10 3 /mm 3 ) and post monsoon seasons (5.47±0.54x10 3 /mm 3 ).The Haematocrit value decreases from control group of fishes to

Industrial effluent containing heavy metals, on entering aquatic environment causes histopatholog... more Industrial effluent containing heavy metals, on entering aquatic environment causes histopathological and haematological disturbances in the fish. The present study deals with the sub-lethal effects of copper on the humoral, enzymological and histopathological parameters in the teleost fish, Clarias batrachus and the curative capacity of vitamin C were investigated. The 96 hour LC50 value of copper was determined using Probit method and was found to be 1.74 mg/L. Fish blood from two sub-lethal concentrations, vitamin supplemented media and toxicant and vitamin free control were analyzed on 7th, 14th, 21st and 28th day of exposure. The haemoglobin (Hb), haematocrit (Hct), erythrocyte count (RBC) and oxygen carrying capacity were reduced compared to the control values up to the day 21 followed by a significant increase (p<0.0001) in all test concentrations on the day 28. The microscopic observation of RBCs in higher concentrations and long exposure showed crenation, immature RBCs w...

Biosciences Biotechnology Research Asia, 2009