Bioaccumulation of Metals in Mangrove Snail (Cerithidea obtusa) from Southwest Johor, Malaysia

Krishnan, Kumar; Saion, Elias; Yap, Chee Kong; AS, Nadia

doi:10.13189/eer.2022.100604

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…The strong association shows that the concentrations of these metals are consistent with the origins of the trace elements. Anthropogenic sources are the main contributing source of trace elements in places with mangroves [2,28].…”

Section: Resultsmentioning

confidence: 99%

Distribution and Contamination of Trace Elements in Mangrove Sediments Collected from West Coast of Peninsular Malaysia

Krishnan¹,

Saion²,

Yap³

et al. 2022

eer

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In tropical and subtropical latitudes, woody plants known as mangroves flourish in slimy, anaerobic soils on the boundary between land and sea. They can withstand extreme weather conditions like high temperatures, unreliable tides, strong winds, and salt. The objective of this study was to determine the concentration of nine trace elements (Hf, Ga, Ba, V, Cs, Sc, Sb, Ta, and Co) in the sediment of the mangrove forest along the west coast of Peninsular Malaysia. Instrumental neutron activation analysis (INAA) was employed to determine the distribution of the elements within the sediments. The concentration of trace elements in the sediment in descending order are Sb < Co < Ta < Sc < Hf < Cs < Ga < V < Ba. The degree of elemental contamination in the sediments was assessed using the enrichment factor (EF) and geoaccumulation index (Igeo). The EF and Igeo of trace element ranged from 0.41 to 20.76 and -3.56 to 1.41 respectively. The EF and Igeo values of a few trace elements in the sediments at Kampung Panchor (L6) suggested that the area had probably deteriorated.

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Section: Resultsmentioning

confidence: 99%

Distribution and Contamination of Trace Elements in Mangrove Sediments Collected from West Coast of Peninsular Malaysia

Krishnan¹,

Saion²,

Yap³

et al. 2022

eer

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“…Most of the snails are sold locally and are highly consumed by Malaysians since the snails can be found in most local markets. Studies on potentially toxic metals in the mangrove snails have been reported in the literature [ 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ]. In particular, biomonitoring using C. obtusa was reported from Indonesia [ 31 , 43 , 45 , 49 ], Malaysia [ 46 , 47 , 49 , 50 , 59 , 60 ], Vietnam [ 57 ] and India [ 48 , 52 , 54 ].…”

Section: Introductionmentioning

confidence: 99%

“…Studies on potentially toxic metals in the mangrove snails have been reported in the literature [ 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ]. In particular, biomonitoring using C. obtusa was reported from Indonesia [ 31 , 43 , 45 , 49 ], Malaysia [ 46 , 47 , 49 , 50 , 59 , 60 ], Vietnam [ 57 ] and India [ 48 , 52 , 54 ]. However, there has been no discussion on the connection between the water–energy–seafood nexus and PTM biomonitoring in the edible mangrove snails.…”

Section: Introductionmentioning

confidence: 99%

Biomonitoring–Health Risk Nexus of Potentially Toxic Metals on Cerithidea obtusa: A Biomonitoring Study from Peninsular Malaysia

Yap

Al-Mutairi

2023

Foods

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The present study aimed to assess the human health risks of six potentially toxic metals (PTMs) (Cd, Cu, Fe, Ni, Pb and Zn) in 21 populations of popular mangrove snails, Cerithidea obtusa, collected from Malaysia. In general, the concentrations (mg/kg wet weight) of Cd (0.03–2.32), Cu (11.4–35.2), Fe (40.9–759), Ni (0.40–6.14), Pb (0.90–13.4) and Zn (3.11–129) found in the snails in all populations were lower than the prescribed maximum permissible limits (MPL)s for Cd, Cu, Ni, Pb and Zn. However, in the investigated snail populations, Cd (14%), Pb (62%), Cu (19%), and Zn (10%) were found in exceedance of the MPL of the respective metal. The target hazard quotient (THQ) values in all populations for Cu, Ni, Fe and Zn were all found to be below 1.00. However, for the THQ values of Cd and Pb, two populations exceeded 1.00, while others were below the threshold level. The estimated weekly intake (EWI) of all six metals for all populations was only 0.03–4.65% of the provisional tolerable weekly intake. This conclusively indicates that, based on the EWI, there are no health risks of the six PTMs in the consumption of snails from Malaysia since the assessments are dependent on the consumers’ body weight and consumption rate. Nonetheless, the present results indicate that the amounts of snails consumed should be limited to minimize the potential health risks of PTMs to consumers. The relatively low and weak but positive correlations of Cu, Ni, Pb and Zn between C. obtusa and their habitat sediments indicate that C. obtusa can be a potential biomonitor for Cu, Ni, Pb and Zn. This is important for effective mangrove management from the perspective of the sustainable resources from the intertidal mangrove environment. Hence, the biomonitoring–health risk nexus of PTMs in mangrove snails is proposed in the present study.

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Utilizing mollusk soft tissue and shells as biomarkers for monitoring heavy metal pollution in mangrove forests

Kumar¹,

Saion²,

Halimah³

et al. 2023

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Bioaccumulation of Metals in Mangrove Snail (Cerithidea obtusa) from Southwest Johor, Malaysia

Cited by 4 publications

References 24 publications

Distribution and Contamination of Trace Elements in Mangrove Sediments Collected from West Coast of Peninsular Malaysia

Distribution and Contamination of Trace Elements in Mangrove Sediments Collected from West Coast of Peninsular Malaysia

Biomonitoring–Health Risk Nexus of Potentially Toxic Metals on Cerithidea obtusa: A Biomonitoring Study from Peninsular Malaysia

Utilizing mollusk soft tissue and shells as biomarkers for monitoring heavy metal pollution in mangrove forests

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