A Comparison of Growth Biomarkers for Assessing Sublethal Effects of Cadmium on a Marine Gastropod, Nassarius festivus

摘要

The effect of cadmium on the growth of an intertidal marine gastropod, Nassarius festivus, was investigated using a number of biomarkers namely conventional mea- surements in terms of increase in shell length or body weight, scope for growth (SfG) and RNA/DNA ratio. After eight days of cadmium exposure, the no observable Effect concentration (NOEC) and lowest observable effect Concentration (LOEC) for the rate of increase in wet Weight were 1.00 and 1.38 mg/l, respectively, while those For shell length did not show any significant difference From the control until day 16.