Study of the Impact of Heavy Metal (Cd, Pb and Hg) Contamination in Wedung Waters, Demak on Anadara granosa (Linnaeus, 1758)

摘要

Wedung Waters, Demak in Central Java Indonesia is a potential location for harvesting Blood Cockles, Anadara granosa. Anthropogenic activities such as agriculture and fishing have potential to cause the entry of heavy metals like Cd, Pb, and Hg into marine environment and affect the biota A. granosa. The test of Cd, Pb, and Hg contaminations in waters, sediments and A. granosa soft tissues have been performed in this study. Histopathology analysis in gill and hepatopancreas are done to see the impact of the contaminations in that biota. The result revealed that Cd, Pb and Hg are not detected in waters, but two of the pollutions, Cd and Pb, are found in sediment and A. granosa soft tissues. Cd and Pb present about 0.08 - 0,2 mg.kg"1 and 3,35-6.46 mg.kg"1 respectively in sediment Heavy metal test revealed that the Cd and Pb content in soft tissue of A. granosa present about 0,56-0,70 mg.kg"1 and 0.05 -0,1 mg.kg"1 respectively. We found inflammation in gills of A. granosa that can be seen from the infiltration of hemocyte, hyperplasia of goblet cell, gill swelling, hemocyte granulocyte, pigmentation, and cilia degeneration. In digestive gland we found the Lifting of epithelial cell, infiltration of hemocyte. pigmentation, necrosis of epithelial cell.