Basusta, Asiye; Özer, Ebru I.; Girgin, Hulya; Serdar, Osman; Basusta, Nuri

In this study,. length weight relationships, of two seahorse species were determined inhabiting Eastern Black Sea. Hippocampus hippocampus (38) and Hippocampus guttulatus (139) individuals were obtained by commercial fishermen in the Eastern Black Sea. Length-weight relationships of H hippocampus were found as W=0.012TL(2 41) (R-2=0,90) and length-weight relationships of H. guttulatus were found as W=0.005TL(2.84) (R-2=0.91). for all individuals. The type of growth for both sexes was negative allometric growth (b<3) for these species. Average condition factors of H. hippocampus and H. guttulatus have shown 0.38 and 0.41, respectively.

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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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