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KMID : 0893320060210020115
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Journal of Environmental Toxicology
2006 Volume.21 No. 2 p.115 ~ p.126
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Effect of Zinc Bioaccumulation on Survival Rate, Activity, Growth and Organ Structure of the Equilateral Venus, Gomphina veneriformis (Bivalvia: Veneridae)
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Ju Sun-Mi
Lee Jae-Woo
Jin Young-Guk
Yu Jun
Lee Jung-Sick
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Abstract
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This study was conducted to find out survival rate, activity, growth and change of the organ structure of bivalves exposed to heavy metal. The results of the study confirmed that zinc (Zn) induces reduction of survival rate and activity, abnormality of organ structure of the equilateral venus, Gomphina veneriformis. Experimental groups were composed of one control condition and three Zn exposure conditions (). As the concentration of zinc increased the accumulation of lipofucin increased in the digestive gland. Survival rate was the lowest in the lowest Zn exposure group at . Growth was not significantly different between the control and exposure group. Activity. with the exception of the lowest Zn exposure group at , was similar between the control and exposure group. Histological analysis of organ system illustrated expansion of hemolymph sinus, loss of striated border of inner epidermis, increase in the number of mucous cell in the mantle. Also, histological degenerations as epithelial necrosis and hyperplasia of mucous cells are recognized in the gill and foot.
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KEYWORD
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Gomphina veneriformis, zinc, bioaccumulation, histological degenerations
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