Contribution to the interpretation of the ring distribution pattern of Horse mackerel (Trachurus trachurus L.) otoliths.

Abstract

Measurements of ring distance to the otolith center are made in order to analyse their general pattern of appearence. The possible agreement between the defined modes with true annual rings is tested. According to these modes, lengths of fishes are back calculated using regression length of fishlength of otolith. Results are compared with those obtained with the direct reading method.