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Effect of Sub-Lethal Treatment of Organophosphorus Pesticide Ekalux (Quinolphos 25% Ec)On Histopathology of Gonad In Freshwater Lamellibranch Mollusc Lamellidense CorrianusDuring Monsoon Season Found Near Sangola, Dist. Solapur

Research Link - 04/2012; 96, Vol - XI (1),(0973-1628):28-30.

ABSTRACT Present work deals with the study of sub-lethal treatment of organophosphorus pesticide
Ekalux (Quinolphos 25%EC) on histopathology of female gonad in freshwater molluscs
Lamellidenes corrianus from Chincholi tank near Sangola, district Solapur (Maharashtra)
during monsoon season. The present investigation on histopathology of the female gonad showed
severe damage to developing gametes and change in shape of vitellogenic oocytes, when exposed
to sub-lethal concentration of organophosphorus pesticide for 15 days during monsoon.

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Available from: Vidhin Sundar Kamble, Jun 04, 2015
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    DESCRIPTION: toxicological effect of organo-phosphorous pesticide on freshwater molluscs found near Sangola
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    ABSTRACT: In the present investigation an attempt has been made to study seasonal variations in glycogen content due to chronic treatment of organochlorine pesticide Thiodan (Endosulfan 35% EC) in female gonad in freshwater bivalve molluscs Lamellidens corrianus from Chincholi tank near Sangola, district Solapur (Maharashtra). The molluscs were exposed to Thiodan for 15 days during all the three seasons. In the present investigation maximum decrease in glycogen level was observed during summer season. INTRODUCTION The direct discharge of industrial effluents and runoff comprising versatile chemicals exert their toxic effect on the living beings, depleting the dissolved oxygen altering pH, changing the C0 2 content and finally affecting the life cycle of the animals (Dehadri, 1990). Variations in biochemical composition from the soft organ due to insecticidal stress have no definite pattern. However, the animal's metabolic activities influence the overall consumption of the organic reserves to balance the ill effects of pesticide. It is well established that application of endosulfan pesticide has increased to control the crop pest, due to its low toxicity to higher animals like mammals and relatively moderate persistence in the environment when compare with other pesticides (Rao and Murty, 1980). Rao et al., (1979) have reported an elaborative account on pollution of aquatic environment with endosulfan residues. It is also stated from different authors that, there will be a transformation of Endosulfan used in agricultural field to the aquatic environment resulted in great threat to the inhabitants including fish specifically and also to the other aquatic organisms broadly (Mel et al., 2005, Shah 2003, and Zohra 2006) . Bivalves are considered as suspension feeder and influenced by the organization and fluctuation of the ecosystem (Akarte et al., 1987). Present study dealt with seasonal variations in the glycogen level in the gonads of fresh water bivalve mollusc Lamellidens corrianus due to sub lethal treatment of Thiodan for 15 days seasonally. MATERIAL AND METHOD Experiments were conducted by using Thiodan (Endosulfan 35% EC) and Ekalux (Quinolphos 25% EC) for determination of biochemical divergence from the experimental chronic group and control group for three different seasons. For chronic toxicity experiment was carried out for 15 days and five live molluscs from control and 1/10 th of LC 50 were sacrificed separately. The gonads were pooled out and were properly blotted and kept in hot air oven for 72 hr at 60 0 C to get constant weight of dried powder and this was used for glycogen estimations by De Zwaan and Zandee (1972) method.