engleski

Monthly variation of length-weight relationship, condition factor and gonadosomatic index of megrim, Lepidorhombus whiffiagonis (Walbaum, 1792) (Osteichthyes: Scophthalmidae) from the eastern Adriatic Sea

Monthly changes in length-weight relationships (LWRs), condition factor and gonadosomatic index (GSI) of megrim, Lepidorhombus whiffiagonis were studied. A total of 1354 specimens (683 males and 671 females) ranging from 9.0 to 35.9 cm in total length (TL) were collected in the eastern Adriatic Sea. Allometric parameters of b values varied during the year ; positive allometric growth was noted from November to May while in other months isometric growth was observed. The GSI reached maximum values in January and minimum in June. The condition factor was lowest after spawning (June) and highest at the recovery phase (September). Monthly variation of b values and condition factor of megrim probably were connected with the reproductive cycle as well as feeding activity and energy distribution. During the summer, food energy is spent in somatic growth, while in winter it is converted in gonad development.

Megrim; Lepidorhombus whiffiagonis; length-weight; condition factor; gonadosomatic index; Adriatic Sea.

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