Heavy Metals in Bivalve Mollusks Collected From Da-Peng Bay Lagoon in South-Southwestern Taiwan

Abstract

In this study, concentrations of several heavy metals (Cu, Pb, Zn, Ni, Cr, and Cd) were measured in Katelysia hiantina, Anomalocardia squamosa, Perna viridis, Anadara antiquata, Paphia undulata, and Sanguinolaria diphos bivalve mollusks from Da-Peng Bay Lagoon near the south-southwestern coast of Taiwan. The metal pollution index (MPI) values were highest and lowest in winter and autumn, respectively. The MPI value in the viscera of P. viridis was higher than in muscles. In all four seasons, Zn concentrations in viscera and muscles of P. viridis were higher than for other metals. The capacities of A. squamosa to accumulate the concentrations of Cu, Ni, and Cr and of A. antiquata to accumulate concentrations of Pb, Zn, and Cd were significant. Analytical results suggested that A. squamosa and A. antiquata may be used as bioindicators for monitoring Cu, Ni, Cr, Pb, Zn, and Cd heavy-metal pollution in Da-Peng Bay Lagoon throughout the year.

Seasonal Variations of Heavy Metals Content in Muscle and Viscera of Green-Lipped MusselPerna viridisFrom Da-Peng Bay Lagoon in Taiwan

“…Sample collection, pretreatment and heavy metals analysis followed the procedure noted in an earlier study by Shue et al (2014).…”

“…Phillips (1985) suggested that the best candidate for bioindicator surveys in Southeast Asia was the green-lipped mussel Perna viridis. Recent studies (Shue et al, 2014;Yap and Al-Barwani, 2012;Yap et al, 2003) on heavy metals concentrations in the green-lipped mussel Perna viridis showed the ability of this marine species to accumulate heavy metals, making it potentially suitable for biomonitoring of heavy metals pollution. In a previous study, Shue et al (2014) reported on heavy metals in bivalve molluscs collected from Da-Peng Bay Lagoon in Taiwan and found that toxicities of Cu, Ni, Cr, Pb, and Zn in bivalve molluscs collected from Da-Peng Bay Lagoon in the south-southwest were not significant when these molluscs were consumed.…”

“…However, discharges (domestic and agricultural wastewater, fisheries sewage) from the neighboring rivers (Kao-ping, Donggang, and Lin-Bian) have harmed the ecology and reduced the water quality of the lagoon. Following an earlier investigation by Shue et al (2014), this study analyzed seasonal variation of heavy metals concentration (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in muscle and viscera of the green-lipped mussel Perna viridis from Da-Peng Bay Lagoon. The results of this study may provide information on the use of Perna viridis, an abundant resource, as a bioindicator for heavy metals pollution in the lagoon.…”