REPONSE DES DIFFERENTS TAXONS MEIOFAUNISTIQUES A LA CONTAMINATION PAR UN ANTIBIOTIQUE (LA PENICILLINE G): ETUDE MICROCOSMIQUE

Response of different taxa of meofauna to the co ntamination with the antibiotic (Penicillin G) : microcosm experimentation : A microcosmic experimentation was conducted to determine the effect of antibiotic (Penicillin G) on communities meiofaunistiques collected at the sediment of Bizerte lagoon (Northern Tunisia). Five increasing doses of this emerging contaminant (D1: 3 mg.L -1 , D2: 30 mg. L -1 , D3: 300 mg. L -1 , D4: 600 mg. L -1 and D5: 700 mg. L -1 ), were used. After 30 days of exposure a microcosmic experimentation was conducted. Meiofauna of Bizerte lagoon was affected by increasing doses of penicillin G added. Thus, the densities meiofaunistiques averages were very volatile. The microcosm witness showed an average value of 91,