Heavy metal distribution in different fish species from the Mauritania coast

Roméo, Michèle; Siau, Y.; Sidoumou, Zeinebou; Gnassia‐Barelli, M.

doi:10.1016/s0048-9697(99)00099-6

Cited by 289 publications

(165 citation statements)

References 17 publications

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“…This result can explain the high Cd content in muscle of anchovy which feed directly on plankton. The concentrations of Cd in liver and muscle of marine fish were in the same order of those reported in Mauritanian coast (Sidoumou et al 2005;Romeo et al 1999;Diop et al 2016) and higher than those reported in pelagic fish from Moroccan coast (in central and south zone) (Chahid et al 2014;Afandi et al 2015) and in Portuguese water (Vieira et al 2011). However, metals such as Fe, Zn, Mn, Cr, Ni, Co and Cu are essential elements with useful biological functions.…”

Section: Metal Accumulation Patternssupporting

confidence: 72%

“…As stated above, upwelled waters, where the different studied species were collected, may be naturally rich in metal element. Metal content of fish from Mauritanian coast showed a lower concentration of Cd and Cu in sardine, mackerel and horse mackerel, and of Zn in sardine and mackerel, however, higher content of Zn were reported in muscle of horse mackerel (Romeo et al 1999). Therefore, difference in metal accumulation can be controlled by numerous factors, corresponding to the physicochemical characteristics of the aquatic biotopes and to their natural or anthropogenic variations, influencing metals bioavailability, via the chemical speciation reactions, and their transfer and bioaccumulation behavior, in relation to the adaptive responses to the main physiological functions (e.g., respiration, osmo regulation, nutrition) (Boudou and Ribeyre 1997;Andres et al 2000;Barron 2003).…”

Section: Metal Accumulation Patternsmentioning

confidence: 96%

“…Cadmium is particularly concentrated in liver of the four studied fish species (Table 2). Data from a previous study showed that cadmium level in liver of various species is less than 10 mg/kg d.w., and more often less than 1 mg/kg d.w. (Romeo et al 1999;Henry et al 2004;Diop et al 2016). Cadmium were already founded at high levels in fish and mollusks from West African coastal areas such as the Mauritanian water (Romeo et al 1999;Sidoumou et al 2005), Moroccan coast (Benbrahim et al 2006;Maanan 2008;El Morhit et al 2013) or Senegalese coast (Bodin et al 2013;Diop et al 2016).…”

Section: Metal Accumulation Patternsmentioning

confidence: 99%

“…Cadmium were already founded at high levels in fish and mollusks from West African coastal areas such as the Mauritanian water (Romeo et al 1999;Sidoumou et al 2005), Moroccan coast (Benbrahim et al 2006;Maanan 2008;El Morhit et al 2013) or Senegalese coast (Bodin et al 2013;Diop et al 2016). These high concentrations of Cd were attributed to natural origins, such as upwelling of deep waters, which takes place along the Western Atlantic coast (Romeo et al 1999). Auger et al (2015), has demonstrated that coastal upwelling in Western Atlantic coast, represent the main natural origin of cadmium enrichment of marine ecosystems, whereas the main anthropogenic origin is the phosphate industry effluents.…”

Section: Metal Accumulation Patternsmentioning

confidence: 99%

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Trace metal distribution in pelagic fish species from the north-west African coast (Morocco)

et al. 2018

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In the current study, ten elements contents (Fe, Zn, Mn, Cu, Cr, Co, Ni, Cd, Pb and Hg) have been measured in muscle and liver of four pelagic fish species (Engraulis encrasicolus, Sardina pilchardus, Scomber japonicus and Trachurus trachurus) from the north-west African coast (South Atlantic Moroccan coast), collected during summer and autumn seasons (July and December 2013, respectively). Significant differences in metal contents were found between the different species (p \ 0.05). Metals levels were also much higher in liver than those recorded in muscle tissues. The concentrations of Fe, Zn, Cd, Co, Cu and Pb were significantly higher in mackerel liver (p \ 0.05).While, in muscle, anchovy presents a higher content of Mn, Cu, Cr, Ni and Pb. A high level of cadmium was recorded in liver of the different species which can be attributed to an anthropogenic source (phosphate industry) and to natural sources (upwelling activities). The main concentration of toxic elements (Cd, Pb and Hg) recorded in the four edible muscles of pelagic fish species, under study, were below the established values by the European Commission Regulations and show that their effect on the consumers health can be considered as negligible.

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Section: Metal Accumulation Patternssupporting

confidence: 72%

Section: Metal Accumulation Patternsmentioning

confidence: 96%

Section: Metal Accumulation Patternsmentioning

confidence: 99%

Section: Metal Accumulation Patternsmentioning

confidence: 99%

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Trace metal distribution in pelagic fish species from the north-west African coast (Morocco)

et al. 2018

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“…Contrary to metal concentrations in the liver, which represent long-term storage of metals, metal concentrations in the gills are expected to reflect short-term metal exposure in the water (Roméo et al 1999). Therefore, they should be a good indicator of the sudden changes in the metal exposure (Kraemer et al 2005).…”

Section: Metal Bioaccumulation In the Chub Gillsmentioning

confidence: 99%

Metal Bioavailability in the Sava River Water

Dragun

Marijić

Vuković³

et al. 2014

The Handbook of Environmental Chemistry

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Metals present one of the major contamination problems for freshwater systems, such as the Sava River, due to their high toxicity, persistence, and tendency to accumulate in sediment and living organisms. The comprehensive assessment of the metal bioavailability in the Sava River encompassed the analyses of dissolved and DGT-labile metal species of nine metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in the river water, as well as evaluation of accumulation of five metals (Cd, Cu, Fe, Mn, and Zn) in three organs (liver, gills and gastrointestinal tissue) of bioindicator organism, fish species European chub (Squalius cephalus L.). This survey was conducted mainly during the year 2006, in two sampling campaigns, in April/May and September, as periods representative for chub spawning and postspawning. Additionally, metal concentrations were determined in the intestinal parasites acanthocephalans, which are known for their high affinity for metal accumulation. Metallothionein concentrations were also determined in three chub organs, as a commonly applied biomarker of metal exposure. Based on the metal concentrations in the river water, the Sava River was defined as weakly contaminated and mainly comparable with unpolluted rivers, which enabled the analyses of physiological variability of metal and metallothionein concentrations in the chub organs, as well as establishment of their constitutive levels.

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Assessment of cadmium toxicity and its possible effects on goldfish (Carassius auratus), employing microscopy and biochemical techniques

Noor

Khan

Noor

2020

Microscopy Res & Technique

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The present study aimed to evaluate and compare the toxicity level of dietary and waterborne Cadmium (Cd) source on the Goldfish Carassius auratus (C. auratus) using various biochemical and microscopic shreds of evidence. C. auratus were divided into two groups based on Cadmium supplementation methods subjected to the same concentrations in the diet and water; moreover, control (Ctrl) group was set up for comparison. Dietary supplemented group (DSG) group and (Aqueous supplemented groups) ASG were supplied with 0.5% of the Cadmium. Successful completion of the study resulted in the lucrative outcomes, and we noticed significantly high concentrations of Cadmium in the gills of the ASG fish while considerably low levels in the gills of DSG. Histopathological evidence showed clear and distinct changes in the liver cells, dilated sinusoids and unusual occurrence of Kupffer cells were noticed in the AS group fish. At the same time, there were also noticeable changes in the DS group compared to CTRL. Visible changes can be seen on the outer morphology of gills, lamella of ASG and DSG both were shrunk and broken, similar changes were noticed in the muscles myoepithelium. The stress parameters were differentially expressed in both the groups; waterborne Cadmium caused a pronounced release of AST, ALT, cortisol, and glucose concentrations. Comparative mortality showed the highest death rate in the ASG fish compared to DSG fish. The present study depicts the highest toxicity of Cadmium in the soluble Addendum form moreover, administered route and time length are crucial factors.

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Heavy metal distribution in different fish species from the Mauritania coast

Cited by 289 publications

References 17 publications

Trace metal distribution in pelagic fish species from the north-west African coast (Morocco)

Trace metal distribution in pelagic fish species from the north-west African coast (Morocco)

Metal Bioavailability in the Sava River Water

Assessment of cadmium toxicity and its possible effects on goldfish (Carassius auratus), employing microscopy and biochemical techniques

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