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Age, growth and mortality of blotched picarel spicara maena (pisces: centracanthidae) in the eastern central Adriatic (CROSBI ID 86412)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Dulčić, Jakov ; Kraljević, Miro ; Grbec, Branka ; Cetinić, Perica Age, growth and mortality of blotched picarel spicara maena (pisces: centracanthidae) in the eastern central Adriatic // Fisheries research, 48 (2000), 1; 69-78-x

Podaci o odgovornosti

Dulčić, Jakov ; Kraljević, Miro ; Grbec, Branka ; Cetinić, Perica

engleski

Age, growth and mortality of blotched picarel spicara maena (pisces: centracanthidae) in the eastern central Adriatic

Age, growth and mortality of the blotched piearel, Spicara maena (L., 1758), were determined from specimens (N=1130) collected on the eastern central coast of the Adriatic Sea from 16 September to 10 October 1996. Total length ranged from 7.8 to 27.5 cm, while weight varied between 5.3 and 398.0 g. The von Bertalanffy growth equation was fitted on the basis of mean length-at-age data resulting in parameter values of L-infinity=24.82 (S.E.=0.369), K=0.532 (S.E.=0.0302), and t(0)=-0.089 (S.E.=0.0321) (R=0.9985). Weight growth constants were: W-infinity=211.17 (S.E.=14.843), K=0.504 (S.E.=0.0324), and t(0)=0.099 (S.E.-0.0.076) (R=0.9627). Weight increased allometrically fur both sexes together with b=3.12 (S.E.=0.025). The blotched picarel is a relatively long-lived species. The oldest male and female were estimated to be 8 and 3 years old, respectively. Total (Z) and natural (hl) mortality were 1.18 and 0.98 per year, respectively. The exploitation ratio E=0.17 revealed an underfished stock. The sex ratio was skewed in favour of malts (1.41:1). Sex reversal was mainly observed between 17.5 and 18.0 cm. Females were observed up to a total length of 19.8 cm. (

spicara maena; age; growth; mortality; Adriatic sea; condition factor; sex inversion; blotched picarel

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Podaci o izdanju

48 (1)

2000.

69-78-x

objavljeno

0165-7836

Povezanost rada

Geologija, Biologija

Indeksiranost