Souissi M. auteur aut IRD Laabidi R. auteur aut IRD Aissa P. auteur aut IRD Pringault Olivier auteur aut IRD Ben Said O. auteur aut IRD text journalArticle eng text/pdf born digital access The waste water treatment plant (WWTP) of the city of Bizerte concentrates different types of chemical and biological pollutants in the Bizerte lagoon (Tunisia). Considering four upstream and downstream WWTP discharge stations, seventy nine, culturable bacterial strains were isolated and identified from water and sediment as fecal coliforms, fecal streptococci, pathogenic staphylococci and non-enterobacteriacea. Fecal coliforms were most abundant (2.5 10(5) bacteria/mg) in sediment of WWTP discharge. Leuconostoc spp (23.1%) and Chryseomonasluteola (23.1%) were the most prevalent culturable fecal indicator bacteria (FIB) isolated at the upstream discharge stations. However, Staphylococcus xylosus (13.9%) was the most prevalent culturable FIB isolated at the WWTP discharge stations. Moreover, high antibioticresistance phenotypes were present in all sampling stations, but especially in WWTP discharge station in both water and sediment. Resistance levels in water and sediment, respectively were amoxicillin (58.8%; 34.8%), penicillin (50%; 31.6%), oxacillin (60%; 33.3%), cefotaxim (55.2%; 39.1%), ceftazidim (66.7%; 50%), gentamycin (42.9%; 38.9%), tobramycin (50%; 25%), vancomycin (33.3; 71.4%), amikacin (66.7%; 0%) and ciprofloxacin (100%; 100%). Interestingly, beta-lactam antibiotic resistant FIB were mostly isolated from water as well as from sediments of upstream and WWTP discharge station. Canonical correspondence analysis CCA correlating antibiotic resistance profile with the abiotic data showed that, in water column, culturable bacterial strains isolated in upstream WWTP discharge stations were interestingly correlated with the resistance to amikacin, oxacillin, cefotaxim, ciprofloxacin and gentamycin, however, in sediment, they were correlated with the resistance to amoxicillin, oxacillin, cefotaxim and vancomycin. Serious beta-lactams and aminoglycosides acquired resistance appeared mainly in fecal strepto-cocci and pathogen staphylococci groups. specialized Culturable fecal indicator bacteria Biodiversity Antibiotic resistance Acquired resistance beta-Iactams WWTP TUNISIE BIZERTE MEDITERRANEE 038 084 020 148 201-210 2018 0147-6513 https://www.documentation.ird.fr/hor/fdi:010072805 10.1016/j.ecoenv.2017.10.002 0147-6513 [F B010072805] https://www.documentation.ird.fr/hor/fdi:010072805 https://www.documentation.ird.fr/intranet/publi/2018/05/010072805.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-06-01 2023-07-11 fdi:010072805 fre