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Heavy metal distribution in the different parts of Cerithidea obtusa by using multivariate analysis


Citation

Edward, Franklin Berandah and Yap, Chee Kong (2009) Heavy metal distribution in the different parts of Cerithidea obtusa by using multivariate analysis. Malaysian Journal of Science, 28 (1). pp. 33-38. ISSN 0126-7906

Abstract / Synopsis

The intertidal gastropod, Cerithidea obtusa were obtained from Bako and Sematan (Sarawak) and Deralik (Perak) in February and December 2006. Besides the shells, the snails were dissected into six different soft tissues. The soft tissues and the shell were used for detection of heavy metals. It was found that the highest concentrations of Cu (112 - 178 ?g/g dw) and Zn (117 – 161 ?g/g dw) were found in the tentacle; the highest concentrations of Cd (4.41 - 5.37 µg/g dw), Pb (53.2 – 63.8 µg/g dw) and Ni (26.1 - 27.9 µg/g dw) were found in the shell. On the other hand, the highest Fe concentrations (910 - 2921 µg/g dw) were found in the operculum. The cluster analysis revealed that the accumulation of heavy metals were clustered into a few groups, where metals were found in the shell are significantly different from the other soft tissues. The multivariate statistical analyses revealed that the accumulation by the different parts were inter-related with one another. Based on the multiple linear stepwise regression analysis, it was also found that the caecum was the most influential organ in accumulation of the studied heavy metals in the total soft tissues. The results indicate the ability of C. obtusa to accumulate heavy metals in the different tissues, hence fulfilling the important criteria as a good biomonitor.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Faculty of Science, University of Malaya
Keywords: Cerithidea obtusa; Gastropod; Heavy metal; Different parts; Multivariate analysis
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 31 Jul 2015 16:40
Last Modified: 14 Sep 2015 11:37
URI: http://psasir.upm.edu.my/id/eprint/14984
Statistic Details: View Download Statistic

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