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Co-variation of gonadosomatic index and parameters of length-weight relationships of Mediterranean horse mackerel, Trachurus mediterraneus (Steindachner, 1868), in the eastern Adriatic Sea (CROSBI ID 127000)

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Šantić, Mate ; Pallaoro, Armin ; Jardas, Ivan Co-variation of gonadosomatic index and parameters of length-weight relationships of Mediterranean horse mackerel, Trachurus mediterraneus (Steindachner, 1868), in the eastern Adriatic Sea // Journal of applied ichthyology, 22 (2006), 3; 214-217-x

Podaci o odgovornosti

Šantić, Mate ; Pallaoro, Armin ; Jardas, Ivan

engleski

Co-variation of gonadosomatic index and parameters of length-weight relationships of Mediterranean horse mackerel, Trachurus mediterraneus (Steindachner, 1868), in the eastern Adriatic Sea

Seasonal changes in length-weight relationships (LWRs), gonadosomatic index (GSI) and condition factor of Mediterranean horse mackerel, Trachurus mediterraneus (Steindachner, 1868), were studied. Ranging from 14.8 to 39.1 cm total length (TL), a total of 1245 specimens (605 males and 640 females) was collected in the eastern Adriatic Sea. Samples were taken at monthly intervals (January-December 2003) using bottom trawls. The b values of LWRs (W = aL(b)) varied during the year with season and condition. Including specimens collected in all seasons, the b values showed that growth of both males and females was positively allometric, i.e. specimens changed shape as they gained weight. The GSI reached maximum values in June and a minimum in December. The condition factor was constant during the pre-spawning period, lowest immediately after spawning (September), and highest at the end of the recovery phase (December).

Trachurus mediterraneus; length-weight relationship; gonadosomatic index; condition factor

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Podaci o izdanju

22 (3)

2006.

214-217-x

objavljeno

0175-8659

Povezanost rada

Biologija

Indeksiranost