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D. Balakrishna ¹, T. Mahesh ¹, T. Ravinder Reddy ¹

Affiliations
1 Department of Zoology, Kakatiya University, Warangal A.P., IN

Abstract

In the present investigation an attempt has been made for analysis of various physicochemical parameters of Nagaram Lake, located in the Nagaram village of Warangal district, Andhra Pradesh., India. It is situated at 18º 05´ 12.66´´ (N) latitude and 79 º 34´ 47.66´´ (E) longitude. Estimation of all the parameters was done with standard methods of APHA 21st Edn. The study revealed that the lake lead to eutrophication due to sewage contamination, agricultural wastes and human activities of surrounding environment. The present result indicated that total alkalinity, total hardness and phosphate values of this lake were towards the etrophication and not much use of humans and as well as aquatic animals.

Keywords

Physico-chemical Parameters, Total Hardness, Phosphate, Nagaram Lake

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V. Rajaiah ¹, V. Vimala ¹, K. Vasumathi Reddy ¹, T. Ravinder Reddy ¹

Affiliations
1 Department of Zoology, Kakatiya University, Warangal (A.P.), IN

Abstract

Tissue and species specific distribution of esterases were studied in eight fishes of two tissue were viz., brain and muscle of channiformes and perciformes. Variation was noticed in muscle and brain. Muscle exhibited fast moving zones in both channiformes and perciformes while in brain exhibited slow moving zones and ArE esterase were dominant in perciformes fishes. ArE esterases were absent in channiformes fishes. Esdp esterases were noticed in muscle of channiformes fishes.

Keywords

Electrophoresis, Esterases, Brain, Muscle, Perciformes, Channiformes Fishes.

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K. Laxmi Prasad ¹, T. Ravinder Reddy ¹

Affiliations
1 Department of Zoology, Kakatiya University, Warangal (A.P.), IN

Abstract

Acetyl cholinesterase (AChE) is an enzyme present in the synapses and myoneural junctions. The levels of the enzyme causes neuronal diseases. Many pollutants causes neuronal diseases to aquatic organisms. The objective of the study was to study the effect of pesticide ‘Kingdoxa’ in freshwater mussels Lamellidens Marginalis (Lamark). Therefore, the effect of sub lethal concentration of commonly used pesticide Kindoxa was studied on the Acetylcholine (ACh) and Acetylcholineserase (AChE) activity in foot, mantle and gill of a fresh water mussel, L. marginalis. To compare the effect of these pesticides on Ach and AChE activity, the mussels were exposed to sub-lethal concentration (Kindoxa 0.33 ppm) of pesticide for 48 hours. After the exposure, the animals were sacrificed tissues were isolated and processed for the estimation of Ach and AChE activity. When exposed to sublethal concentration of the pesticide, the activity levels of AChE was decreased and ACh content was increased in all the three tissues treated with Kindoxa. At tissue level inhibition was in the order of mantle > gill > foot. The inhibition of AChE and elevation of Ach content was higher in mussels exposed to Kindoxa. Therefore, it is possible that Kindoxa due to their inhibitory effect on the enzyme and ability to obstruct ACh hydrolysis cause its accumulation and ultimately lead to the disruption of nervous co-ordination and consequently death, in case of acute poisoning.

Keywords

Kindoxa, Acetylcholine, Acetyl Cholinesterase, L. marginalis.

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