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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Tolerance and biomarkers as useful tools for assessing environmental quality in the Oued Souss estuary (Bay of Agadir, Morocco)
Comparative Biochemistry and Physiology - C Toxicology and Pharmacology, Volume 143, No. 1, Year 2006
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Description
The aim of this study was to assess aquatic environmental quality of Oued Souss (Agadir, Morocco). This estuary has been subjected for a long time to large amounts of sewage discharges and industrial effluents. Since November 2002, no waste outlets have been discharged in this site due to their connection to a wastewater purification plant. Firstly, we have compared metal tolerance of the annelid polychaete (Nereis diversicolor) originating from Oued Souss and a relatively clean site (Oualidia, Morocco). Secondly, we have evaluated with a multi-marker approach (acetylcholinesterase [AChE], glutathione-S-transferases [GSTs], catalase, thiobarbituric acid reactive substances [TBARs]) responses of worms to the pollution gradient. Results have shown that worms from Oued Souss have acquired tolerance to copper and zinc due to a long-term sub-lethal metal exposure and this metal tolerance was maintained in spite of the end of wastewater discharges in this site. Higher catalase, GSTs and TBARs values have been observed in worms from Oued Souss sampled before implantation of wastewater treatment. The multi-marker approach confirms that these worms have been submitted to various contaminants. In contrast, high inhibition in AChE activities measured in worms from Oued Souss could be explained by the continuous agricultural influence of nearest areas. The level of contamination was probably maintained since biomarker values were generally higher in worms from Oued Souss when compared to Oualidia. © 2005 Elsevier Inc. All rights reserved.
Authors & Co-Authors
Ait Alla, Aicha
Morocco, Agadir
Faculté Des Sciences - Agadir
Mouneyrac, C.
France, Marne-la-vallee
Centre D'enseignement et de Recherche en Environnement Atmosphérique
France, Nantes
Nantes Université
Durou, C.
France, Marne-la-vallee
Centre D'enseignement et de Recherche en Environnement Atmosphérique
France, Nantes
Nantes Université
Moukrim, Abdellatif
Morocco, Agadir
Faculté Des Sciences - Agadir
Pellerin, J.
Canada, Rimouski
Institut Des Sciences de la Mer de Rimouski
Statistics
Citations: 95
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/j.cbpc.2005.11.015
ISSN:
15320456
Research Areas
Environmental
Study Locations
Morocco