Academic Journals Database
Disseminating quality controlled scientific knowledge

ETUDE DES EFFLORESCENCES TOXIQUES A CYANOBACTERIES DANS LE BARRAGE MEXA, ALGERIE

ADD TO MY LIST
 
Author(s): A. OUARTSI | A. SAOUDI | D. CHEKIREB

Journal: REMISE : Revue de Microbiologie Industrielle Sanitaire et Environnementale
ISSN 2028-0351

Volume: 5;
Issue: 1;
Start page: 81;
Date: 2011;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: cyanobacteria | Microcystis sp. | Plankthotrix sp. | microcystin-LR | ELISA | Mexa dam | Algéria

ABSTRACT
The presence of the toxic cyanobacteria in water bodies used either for drinking or irrigation purposes may present serious health risks for the human population. In this context, Mexa dam in North-East of Algeria has been sampled for toxin-producing cyanobacteria and especially for the algae producing microcystins. Physicochemical and biological water quality, including intracellular microcystins concentrations was investigated for the first time, during ten months, from March to December 2007. Eight cyanobacterial genera were observed and five from them are toxin-producing cyanobacteria. Microcystis sp. is the predominant specie, on November and December reaching high cell densities of 2,101x106cell.ml-1. Intracellular microcystins concentrations in algal samples analyzed by immunological ELISA assay reached the highest value (0, 77 µg.l-1) on November. This toxin concentration was recorded where the highest chlorophyll-a concentrations and Microcystis sp. cell densities occurred.
Why do you need a reservation system?      Save time & money - Smart Internet Solutions