Variability characteristic in the Growth of Nuttallia olivacea

Abstract

 Now a days, bivalve population is decreasing in tifal flat. The objective of this study is to focus on the growth situation (BM) of bivalve (Nuttallia olivacea) and their food sources. Indeed, it is used as a maker of food resource, based on carbon stable isotope (SI), composition of fatty acids (FA) and fatty acids specific stable carbon isotope (FA-SI). The results showed that SI of the bulk sample do not have any relation with BM. However, the compotision of FA revealed that EPA and DHA were useful nutrients for bivalve BM.Furthermore, FA-SI showed that the terrestrial EPA and DHA contribute to decrease, bivalve BM value. Therefore, it was considered terrestrial organic matter of food source is important element in the bivalve growth.