title: Estimation of microcystins in the freshwater fish Oreochromis niloticus in an Egyptian fish farm containing a Microcystis bloom.
abstract: Microcystins (MCYSTs) that accumulated in different organs of the freshwater fish Oreochromis niloticus, collected from a fish farm in Egypt containing heavy blooms of Microcystis aeruginosa, were investigated using an enzyme-linked immunosorbent assay (ELISA). The distribution of MCYSTs in the organs varied significantly. The highest MCYST level was recorded in the guts (821 ng/g fresh weight), followed by the livers (531.8 ng/g) and kidneys (400 ng/g). Smaller amounts of MCYST were detected in muscles (102 ng/g). The present study suggests that fish farms should be monitored for the presence of toxic cyanobacterial blooms to minimize the exposure of fish to potent hepatotoxins.
authors.affiliation: Department of Botany, Faculty of Science, South Valley University, Sohag, Egypt. mzakaria_99@yahoo.com
authors.forename: Zakaria A
authors.initials: ZA
authors.lastname: Mohamed
authors.forename: Wayne W
authors.initials: WW
authors.lastname: Carmichael
authors.forename: Ahmed A
authors.initials: AA
authors.lastname: Hussein
mesh_terms: D000818:Animals; D017756:Aquaculture; D023681:Cichlids; D004534:Egypt; D004784:Environmental Monitoring; D004797:Enzyme-Linked Immunosorbent Assay; D005068:Eutrophication; D052998:Microcystins; D046931:Microcystis; D010456:Peptides, Cyclic / Q000032:analysis* / Q000493:pharmacokinetics*; D014018:Tissue Distribution
chemical_list: D052998:Microcystins; D010456:Peptides, Cyclic; C078588:microcystin