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Pertanika Journal - Universiti Putra Malaysia

Pertanika Journal - Universiti Putra Malaysia

Pertanika Journal - Universiti Putra

ARTICLE INFO Article history: Received: 1 February 2011 Accepted: 27 April 2011 E-mail addresses: yapckong@hotmail.com (Yap, C. K.), yapckong1973@yahoo.com.sg (Mohd. Nasir, S.), franklin_dwrd@yahoo.com (Edward, F. B.), sgtan_98@yahoo.com (Tan, S. G.) * Corresponding author ISSN: 1511-3701 © Universiti Putra Malaysia Press Pertanika J. Trop. Agric. Sci. 35 (4): 815 - 822 (2012) TROPICAL AGRICULTURAL SCIENCE Journal homepage: http://www.pertanika.upm.edu.my/ Anthropogenic Inputs of Heavy Metals in the East Part of the Johore Straits as Revealed by their Concentrations in the Different Soft Tissues of Perna viridis (L.) Yap, C. K. 1 *, Mohd. Nasir, S. 1 , Edward, F. B. 1 and Tan, S. G. 2 1 Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia 2 Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia ABSTRACT Concentrations of Cd, Cu, Ni, Pb and Zn were determined in seven different soft tissues of Perna viridis collected in May-November 2006 from the six sites in the Straits of Johore. The metal concentrations in the soft tissues of the samples from the east of the Johore Causeway were generally higher than those of the samples collected from the western partI of it. This indicated that the eastern part of the straits had higher contamination and bioavailabilities of Cd, Cu, Ni, Pb and Zn. Therefore, these results are in agreement with the fact that there are various anthropogenic activities, such as petrochemical plants and port activities, in the eastern part of the Straits of Johore. The findings of this work are useful for future reference, particularly for the semi-enclosed Straits. Keywords: Heavy metal, green-lipped mussel, Perna viridis, Johore Causeway, The Straits of Johore INTRODUCTION In 1996, the most interesting issue related to the Johore Causeway was the intention to replace the semi-enclosed Johore Causeway with a bridge. In 2003, the Malaysian government planned to build a “crooked half bridge”. On 12 April 2006, however, the Malaysia government scrapped off the plan to build the bridge due to unavoidable circumstances. Among the initial reasons cited for building the bridge were that it would allow free flow of water across both sides of the Straits, whereby the 1909-built causeway artificially divides it into two parts (Yap et al., 2006), and that the bridge would help to ease the traffic congestion in Johore Bharu city (Berita Harian, 2006), apart from markedly improving the marine ecology of the Johore Straits, alleviating the stagnation

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