Cu, Cd, As and Hg resistance levels in Escherichia coli isolated from Mediterranean mussel and sea snail in the Southeastern Black Sea

Marine environment is exposed to various pollutants such as heavy metals, pesticides, and antibiotics. Bacterial resistance these a global problem all over the world. In this study, Mediterranean mussel (Mytilus galloprovincialis) sea snail (Rapana venosa) were collected from 12 sampling points Artvin, Rize, Trabzon, Giresun Coasts of Black Sea, Turkey. A total 54 Escherichia coli isolated tested for their ability tolerate Cu, Cd, As, Hg. For purpose, minimum inhibitory concentration (MIC) tests isolates Hg done determine tolerance or using broth dilution technique. MIC ranged between 100-400 ?g/ml, 100-200 25-400 3.125-25 respectively. All strains determined resistant but sensitive As. Resistance was 7.4 %. The most common gene in bacteria nccA followed by chrB merA. Tolerance toxic including metal(oid)s significant ecological importance. These could be used monitoring environmental metal(oid) pollution.