Risk probability due to heavy metals in bivalve from Egyptian Mediterranean coast

Nemr, Ahmed El; Khaled, Azza; Moneer, Abeer A.; El-Sikaily, Amany

doi:10.1016/j.ejar.2012.11.001

Cited by 65 publications

(37 citation statements)

References 46 publications

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“…Nevertheless, in the present study concentrations of Cr, Ni Cu and Pb were similar or even lower than concentrations reported by El-Nemr et al (2012) in R. decussatus (4.2e5.2, 9.0 to 13.7, 1.9 to 3.5 and 0.1e0.3 mg kg À1 DW, respectively) from Mediterranean coast. Also, Yang et al (2013) found higher concentrations of Cu (2.9e5.4 mg kg À1 DW) and lower or similar concentrations of As, Cr, Ni and Pb (0.6e0.9, 0.2 to 0.3, 1.2 to 1.8 and 0.1 mg kg À1 DW, respectively) in R. philippinarum from China (Yang et al, 2013).…”

Section: Concentration Of Elementscontrasting

confidence: 60%

“…Matozzo et al, 2012;El Nemr et al, 2012), Ruditapes philippinarum (Adams and Reeve, 1850) (Sfriso et al, 2008;Matozzo et al, 2012;Wang et al, 2012) and Venerupis corrugata (Adams and Reeve, 1850) . These species have a wide distribution, present high abundance, sessile nature and filter-feeding capacity (Beeby, 2001;Kucuksezgin et al, 2010).…”

Section: Introductionmentioning

confidence: 98%

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Biochemical performance of native and introduced clam species living in sympatry: The role of elements accumulation and partitioning

Velez

Leandro

Figueira

et al. 2015

Marine Environmental Research

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Section: Concentration Of Elementscontrasting

confidence: 60%

Section: Introductionmentioning

confidence: 98%

Biochemical performance of native and introduced clam species living in sympatry: The role of elements accumulation and partitioning

Velez

Leandro

Figueira

et al. 2015

Marine Environmental Research

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“…They can also act as a nonpoint source and have the potential to release the sediment-bound metals and other pollutants to overlying waters, and in turn adversely affect aquatic organisms (Wang et al, 2010). The contamination levels of the aquatic environment by heavy metals can be estimated by analyzing water, sediments and marine organisms (El Nemr et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Metal pollution assessment in the surface sediment of Lake Nasser, Egypt

Goher¹,

Farhat²,

Abdo³

et al. 2014

Egyptian Journal of Aquatic Research

190

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Eight heavy metals were measured seasonally in the sediment of Lake Nasser during 2013. 27 sites were chosen through 9 sectors across the main channel of the lake from Abu-Simbel to Aswan High Dam to assess the levels of the selected metals. The abundance of these metals was in the order of Fe > Mn > Zn > Cr > Ni > Cu > Pb > Cd, with mean concentrations of 12.41 mg/g, 279.56, 35.38, 30.79, 27.56, 21.78, 11.21 and 0.183 lg/g, respectively. Heavy metals are positively correlated with fine particles (mud fractions) and organic matter accumulation. The results showed perspicuous spatial high significant differences (P < 0.01) for all the measured metals. Fe, Cr, Ni, Pb and Cd exhibited temporally high significant differences (P < 0.01) before and after the flood period. Four Pollution Indices were used for the environmental assessment of Lake Nasser sediment. The indices included three single indices, Enrichment Factor (EF), Index of Geo-accumulation (I geo ) and Contamination Factor (CF). While the fourth, Pollution Load Index (PLI) was an integrated index. The pollution indexes confirmed that the Lake Nasser sediment was not contaminated with these elements. Sediments of Lake Nasser may be represented as a reference for the pre-industrial background of River Nile Sediments downstream Aswan High Dam. ª 2014 Hosting by Elsevier B.V. on behalf of National Institute of Oceanography and Fisheries.

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“…Among contaminants, inorganic compounds such as metals and metalloids, even at low concentration, may contribute to the estuaries deterioration affecting the organisms inhabiting these areas (Coelho et al, 2006;El-Nemr et al, 2012), particularly benthic macrofauna. Bivalves, which are mostly filter-feeders contacting directly with contaminated water and sediment, are greatly affected by these contaminants (Pellerin and Amiard, 2009;Al-Subiai et al, 2011;Moschino et al, 2012;Jebali et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation patterns, element partitioning and biochemical performance of Venerupis corrugata from a low contaminated system

Velez

Freitas

Soares

et al. 2014

Environmental Toxicology

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The current study reports metals and arsenic (As) concentrations present in sediments and in the native clam Venerupis corrugata, collected in the Ria de Aveiro, one of the most important aquatic systems of the Portuguese coast with high biodiversity and socio-economic value. Because of its ecological importance in its habitat, and being one of the most exploited bivalve mollusks in Portugal, several biochemical biomarkers were evaluated in order to illustrate the species status when under environmental conditions. The concentration of metals and As in the sediments showed an increase of contamination among areas (areas A-E). The results proved higher bioaccumulation in organisms from the area less contaminated (area A, BAF > 1). The concentration of metals and As was predominant (63.4%) in the insoluble fraction of clams. The biochemical evaluation evidenced an increase of oxidative stress in organisms from the most (D and E) and the less (area A) contaminated areas, demonstrated by higher LPO levels, CAT, and GSHt activities at these areas and the increase of methalotionines (MTs) along the concentration gradient. This suggests a preventive mechanism in order to protect cells against pollutants (metals and As).

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Risk probability due to heavy metals in bivalve from Egyptian Mediterranean coast

Cited by 65 publications

References 46 publications

Biochemical performance of native and introduced clam species living in sympatry: The role of elements accumulation and partitioning

Biochemical performance of native and introduced clam species living in sympatry: The role of elements accumulation and partitioning

Metal pollution assessment in the surface sediment of Lake Nasser, Egypt

Bioaccumulation patterns, element partitioning and biochemical performance of Venerupis corrugata from a low contaminated system

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