Sains Malaysiana 40(8)(2011): 809–819
A Study on the Potential of the Periostracum of Perna
viridis as a Biomonitoring Material for Pb in Tropical Coastal Waters Based
on
Correlation Analysis
(Kajian Potensi
Periostracum Perna viridis Sebagai Bahan Biopenunjuk
Pb di Perairan Pantai
Tropika Berasaskan Analisis Korelasi)
C.K. Yap*
Department of
Biology, Faculty of Science, Universiti Putra Malaysia
43400 UPM,
Serdang, Selangor, Malaysia
S.G. Tan
Department of
Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences
Universiti Putra
Malaysia , 43400 UPM, Serdang, Selangor, Malaysia.
Diserahkan: 23 Mac 2010 / Diterima:
21 Oktober 2010
ABSTRACT
The periostracum is the
outermost layer overlying the inner prismatic and nacreous layers of the shells
of bivalves. In the present study, the distributions of Cd and Pb in the soft
tissues (ST) and periostracum of the green-lipped mussel Perna
viridis sampled from 15 sampling sites in the coastal waters of Peninsular
Malaysia were determined. The concentrations of Cd (0.21-10.87 mg/g dry weight)
and Pb (1.16-40.20 mg/g dry weight) in the periostracum were generally higher
than those in the ST (Cd: 0.10-5.55 mg/g dry weight; Pb:
2.53-18.62 mg/g dry weight). Based on correlation analysis from nine
geographical populations, the higher correlation coefficients (R values)
between the periostracum-geochemical fractions of the sediments than between
the ST-geochemical fractions of the sediments indicated that
the periostracum could be a potential biomonitoring material for Pb. Hence, the
present results supported the use of the periostracum of P. viridis as a
potential biomonitoring material for Pb but not for Cd. However, more studies
are warranted to verify its usefulness for the biomonitoring of heavy metal
pollution in tropical coastal waters.
Keywords: Biomonitoring
material; Cd; Pb; periostracum; Perna viridis
ABSTRAK
Periostrakum adalah lapisan
luar yang meliputi perismatik dalaman dan lapisan nakreus bagi cangkerang
bivavia. Di dalam kajian ini, taburan Cd dan Pb di dalam tisu lembut dan
periostrakum telah ditentukan pada kupang Perna viridis yang
disampel dari 15 kawasan di pantai Semenanjung Malaysia. Kepekatan bagi Cd
(0.21-10.87 mg/g berat kering) dan Pb (1.16-40.20 mg/g berat kering) di dalam
periostrakum secara amnya adalah lebih tinggi daripada tisu lembut (Cd:
0.10-5.55 mg/g berat kering; Pb: 2.53-18.62 mg/g berat kering). Berdasarkan
analisis korelasi daripada 9 populasi geografi, korelasi koefisien (nilai R)
yang lebih tinggi di antara periostrakum- fraksi geokimia bagi sedimen daripada
tisu lembut-fraksi geokimia bagi sedimen, menunjukkan potensi periostrakum
sebagai bahan biopenunjuk bagi Pb. Oleh itu, keputusan ini menyokong penggunaan
periostrakum P. viridis sebagai bahan biopenunjuk bagi Pb tetapi bukan
bagi Cd. Walau bagaimanapun, kajian lanjutan perlu dilakukan untuk mengesahkan
penggunaannya dalam kajian pemantauan logam berat di kawasan persisiran pantai
tropika.
Kata kunci: Bahan biopenunjuk; Cd; Pb; periostrakum; Perna viridis
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*Pengarang untuk surat-menyurat; email:
yapckong@hotmail.com
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