EFFECTS OF COMPONENTS OF MUNICIPAL WASTEWATER ON SCOPE FOR GROWTH BASED ON CARBON MASS BALANCE IN CORBICULA JAPONICA

Abstract

 Scope for growth based on carbon mass balance (SFGC) and dehydrogenase (NADH) activity were assessed for brackish water bivalve Corbicula japonica exposed to five times diluted municipal wastewater and its components, assuming an anthropogenic water pollution. The results showed that soluble components of wastewater decreased in SFGC, while particulate components contributed to enhance SFGC, because they were used as food sources. On the other hand, soluble components increased in NADH activity and had more adverse effects in the bivalves with lower population density. There was a negative correlation between SFGC and NADH activity. The result indicated that SFGC was in response to NADH activity.