abstract: Some indices (the condition index, the state index, the condition factor, the meat yield index and gonadosomatic index) were tested and compared to estimate the degree of shell filling with meat for cultivated M. galloprovincialis from (Crimea). The peaks of values of the the state index, the condition factor and the meat yield index had noted in September (1508.8%, 3.60.2%, 35.82.2%, respectively). All the indices can be used as indicators of quality of mussel production. If using gonadosomatic
journal: Turkish Journal of Fisheries and Aquatic Sciences