Article (Scientific journals)
TRACE ELEMENT BIOACCUMULATION IN THE EDIBLE MILK SNAIL (OTALA LACTEA) AND CABRILLA (OTALA PUNCTATA) IN MARRAKECH, MOROCCO
Sebban, H.; Ait Belcaid, H.; El Alaoui El Fels, A. et al.
2022In Applied Ecology and Environmental Research, 20 (1), p. 875 - 892
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Keywords :
Bioindicators; Health risk assessment; ICP-MS; Metallic pollution; Terrestrial invertebrates; Ecology, Evolution, Behavior and Systematics; Agronomy and Crop Science
Abstract :
[en] Morocco is the first land snail exporter in the world and the majority of snail production consists of individuals collected from nature. These gastropods are known to accumulate high levels of trace metals in their tissues hence the main objective of this study. We aimed firstly to investigate the bioaccumulation efficiency of Pb, Cd, Zn, Cu and Ca in Otala spp. snails, the most commonly widespread and the most consumed species in the Marrakech region, and then evaluate the potential risk on human health. Soil, foot, viscera and shell of adult snails were picked from six sampling stations in Al Haouz plain and analysed by ICP-MS. Results showed that the investigated snails accumulated all the examined elements with significant variations among the different tissues. The Principal Component and Bioaccumulation Factor analyses demonstrated that Otala spp. are macroconcentrators for Cd and microconcentrators for Pb. Furthermore, their shell accumulated more Ca, foot accumulated more Cu and viscera accumulated more Zn, Cd and Pb. In addition, the detected concentrations of toxic metals (Pb and Cd) were higher than the maximum admissible limits according to the European regulation except for Pb in the reference station. In conclusion, Otala spp. snails in our region can be used as bioindicators of trace element bioavailability and their consumption must be limited to avoid any possible intoxications.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Sebban, H.;  Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakech, Morocco
Ait Belcaid, H.;  Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakech, Morocco
El Alaoui El Fels, A.;  Department of Biology, Faculty of Science and Techniques, Cadi Ayyad University, Marrakech, Morocco
Bouriqi, Abdelillah  ;  Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS) ; Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakech, Morocco
Pineau, A.;  Department of Clinical Pharmacology, University Hospital of Nantes, Nantes, France
Sedki, A.;  Department of Biology, Faculty of Science Semlalia, Cadi Ayyad University, Marrakech, Morocco
Language :
English
Title :
TRACE ELEMENT BIOACCUMULATION IN THE EDIBLE MILK SNAIL (OTALA LACTEA) AND CABRILLA (OTALA PUNCTATA) IN MARRAKECH, MOROCCO
Publication date :
31 January 2022
Journal title :
Applied Ecology and Environmental Research
ISSN :
1589-1623
eISSN :
1785-0037
Publisher :
Corvinus University of Budapest
Volume :
20
Issue :
1
Pages :
875 - 892
Peer reviewed :
Editorial reviewed
Available on ORBi :
since 15 April 2022

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