TOXICITY OF OIL EFFLUENT ON OXYGEN UPTAKE, FILTRATION RATE AND GLYCOGEN IN Lamellidens marginalis...

Lamellidens marginalis, a freshwater bivalve, was exposed to sublethal concentrations of oil effluent in order to examine the filtration rate, oxygen uptake, and glycogen level of foot, gill, and digestive gland tissues for healthy assessment for reuse in oil effluent intoxicated aquatic environments. The treated group's oxygen absorption was greater than the control group's in 1/4th and 1/10th exposures, reaching a peak at 48 hours and subsequently declining. Oil effluent exposure concentrations progressively rose, peaking at (205 68.344 ml oxygen/hr) 72 hours in 1/4th and (172 57.346 ml oxygen/hr) 42 hours in 1/10th concentrations, and then gradually declined. Oil effluent uptake peaked at 84 percent when compared to the control at all hours.

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