Basusta, Asiye; Basusta, Nuri; Aydin, Rahmi; Ozer, Ebru I.; Girgin, Hulya

The goal of this study was to determine the best bone structure for age determination in Salmo macrostigma. During the study, comparative age determinations were performed on a total of 243 fish samples by using the operculum, suboperculum, preoperculum, interoperculum and vertebrae bony structures. In comparing the ages of five bony structures, the least agreement was 90.79% at the ages of the interoperculum-vertebrae and preoperculum-interoperculum. The most agreement was 99.59% at the ages of operculum-suboperculum. The biggest age difference amongst bony structures was 2. The clearest age ring was observed on the operculum and suboperculum bones.

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