Seasonal Variations of Trace Metal Concentrations in the Soft Tissue of Lithophaga Lithophaga Collected from the Bizerte Bay (Northern Tunisia, Mediterranean Sea)

Kefi, Ferdaous Jaafar; Mleiki, Anwar

doi:10.4172/2155-9546.1000432

Cited by 6 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results are in accordance with those of Ali et al 12 and Kefi et al 7 who showed that low salinity plays an important role in the bioaccumulation of Zn and Cu in molluscs. As for Pb, it is more absorbed by molluscs during the low-water season (dry season).…”

Section: Discussionsupporting

confidence: 93%

“…As for Pb, it is more absorbed by molluscs during the low-water season (dry season). Omar et al 10 , and Kifi et al 7 explain this strong bioaccumulation by increasing temperature in these periods. At the Cd level, our results disagree with those of Ali, 12 ; Omar et al 10 and Kefi et al 7 .…”

Section: Discussionmentioning

confidence: 93%

“…Among the elements sampled, Zn and Cu are more abundant during the rain and flood seasons. Indeed, Zn has a biochemical role in the process of structural regulation and in the enzymatic composition of biological cells 7 . As for Cu, it abundance is explained by the various mechanisms that take into account the homeostatic process in the body of animals in response to different metabolic demands 8 .…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Seasonal variation of metallic trace elements (MTE) in oyster soft tissues, Crassostrea gasar at three bays of Ebrié lagoon, Abidjan, COTE D’IVOIRE

2018

JECET

View full text Add to dashboard Cite

The assessment of the state of health of the Ebrié lagoon through the analysis of five ETMs (Zn, Cu, Pb, Cr and Cd) by the berries of Azito, M'badon and Koumassi (Cote d'ivoire) in the soft tissues of Oysters, Crassostrea gasar. Seasonal samples were taken from December 2015 to December 2016. Physico-chemical parameters such as pH, salinity and temperature were measured. The average concentrations of MTE show that Azito Bay is the most contaminated. As for the lowest concentrations, they are obtained at the bay of M'badon. Comparisons made on the basis of the seasons showed significant differences. Berries are more concentrated in Pb, Cr and Cd during the low-water season only, while Zn and Cu are more abundant during the rain and flood seasons.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal variation of metallic trace elements (MTE) in oyster soft tissues, Crassostrea gasar at three bays of Ebrié lagoon, Abidjan, COTE D’IVOIRE

2018

JECET

View full text Add to dashboard Cite

show abstract

“…As shown in our present work, TE showed positive correlations with T°C, salinity and suspended particulate matter (p<0.01; r≤0.451) (see Supplementary Material Table S4). Similar works have reported on Mytilus galloprovinciallis from Algerian coasts (Rouane Hacene et al 2015) and Bizerte lagoon (Kefi et al 2015) and on Arca noae from Bizerte lagoon (Ghribi et al 2020). The seasonal variations in TE concentrations could also be related to the physiological status of bivalves and their reproductive cycle (Bordin et al 1992, Regoli andOrlando 1994).…”

Section: Discussionsupporting

confidence: 62%

Assessment of oxidative stress, genotoxicity and histopathological responses in the digestive gland of Ruditapes decussatus collected from northern Tunisian lagoons

Bejaoui

Rabeh

Telahigue

et al. 2020

scimar

View full text Add to dashboard Cite

The aim of the present study was to investigate the combined effects of seasonality and anthropogenic pressure on a battery of oxidative stress, lipid peroxidation, protein oxidation, DNA damage and histological alterations in the native clam Ruditapes decussatus collected from a less contaminated area (LCA), Ghar El Melh, a moderately contaminated area (MCA), the North Lake, and a highly contaminated area (HCA), the South Lake, all located in the southern Mediterranean Sea. The accumulation of cadmium, lead, copper, iron and zinc was higher in the digestive glandsof clams collected from the MCA and the HCAthan in those from the LCA, particularly during the warm season. Our results reveal that metallothionein, lipid peroxidation, protein oxidation levels and antioxidant defence systems were higher, while acetylcholinesterase activity was lower, in clams from the MCAand HCAthan in those from the LCA. The results also indicate that clams from the MCA and the HCAare characterized by histological alterations and DNA damage. In conclusion, the evident changes of antioxidant defence systems and macromolecules between the studied lagoons reveal the perturbation of the physiological states of clams from polluted sites thatcope with seasonal changes and trace element accumulations.

show abstract

“…George et al (2013) further explained that a substantial increase in the precipitated form of metals in the water column coupled with high filtration rate during the warm season could explain the high metal levels in bivalve tissues. Kamel et al (2014) and Kefi et al (2015) have also reported higher accumulation of Cd, Cu, Zn and Ni in Mytilus galloprovincialis from the Bizerte lagoon and for Pb in Lithophaga lithophaga in the Bizerte Bay during summer. Seasonal fluctuations in TE concentrations may be related to environmental conditions but also temporal variability in the physiological status of organisms (Bordin et al 1992).…”

Section: Discussionmentioning

confidence: 91%

Trace elements and oxidative stress in the Ark shell Arca noae from a Mediterranean coastal lagoon (Bizerte lagoon, Tunisia): are there health risks associated with their consumption?

Ghribi

Richir

Bejaoui

et al. 2020

Environ Sci Pollut Res

View full text Add to dashboard Cite

The current study examined the concentrations of ten trace elements (TE) (nickel, chromium, cadmium, iron, zinc, manganese, aluminum, copper, selenium and lead) in the edible tissue of the Ark shell Arca noae (L. 1758) from a Mediterranean coastal lagoon, the Bizerte lagoon during 2013-2014. The analysis of several redox status biomarkers, metallothioneins (MTs), malondialdehyde (MDA), glutathione peroxidase (GPx), reduced glutathione (GSH) and acetylcholinesterase (AChE), was monitored as a response to TE bioaccumulation and environmental parameters variability. Significant differences (p < 0.05) were observed between mean seasonal TE concentrations in A. noae soft tissue. The highest TE concentrations in A. noae soft tissues were recorded during summer, which coincided with the increase of body dry weight (BDW) and the gonad index (GI). During this season, biomarker responses were enhanced, revealing significant increases of MTs, MDA and GSH levels as well as GPx activity in A. noae tissues, while a decrease of AChE activity was observed. The levels of TE analyzed in A. noae and several parameters used to assess the potential human risk (estimated weekly intake, target hazard quotient and target hazard risk) were lower than the permissible limits for safe seafood consumption. Consequently, this shellfish can be considered safe for human consumption. This preliminary study presents prospects for the valorization of this seafood product in Tunisia's food sector. It also gives basal information for future environmental assessment studies in which A. noae could be used as early warning tools in the field of biomonitoring programs and confirms the usefulness of biomarkers to monitor the health status of aquatic organisms.

show abstract

Seasonal Variations of Trace Metal Concentrations in the Soft Tissue of Lithophaga Lithophaga Collected from the Bizerte Bay (Northern Tunisia, Mediterranean Sea)

Cited by 6 publications

References 0 publications

Seasonal variation of metallic trace elements (MTE) in oyster soft tissues, Crassostrea gasar at three bays of Ebrié lagoon, Abidjan, COTE D’IVOIRE

Seasonal variation of metallic trace elements (MTE) in oyster soft tissues, Crassostrea gasar at three bays of Ebrié lagoon, Abidjan, COTE D’IVOIRE

Assessment of oxidative stress, genotoxicity and histopathological responses in the digestive gland of Ruditapes decussatus collected from northern Tunisian lagoons

Trace elements and oxidative stress in the Ark shell Arca noae from a Mediterranean coastal lagoon (Bizerte lagoon, Tunisia): are there health risks associated with their consumption?

Contact Info

Product

Resources

About