Akademik Veri Yönetim Sistemi
Journal of Applied Ichthyology, cilt.25, sa.2, ss.215-218, 2009 (SCI-Expanded)
Samples of 525 Scorpaena porcus (Linnaeus, 1758) were collected from the southeastern Black Sea between January 2002 and May 2003 for information on age, growth, length-weight relationships and stomach contents. Total length of sampled fish ranged from 4.6 to 22.9 cm and total weight from 1.3 to 220 g. The sex ratio (1 : 1.61) was biased toward females (P < 0.05). Positive allometric growth was determined in the collected samples. The length-weight relationshipfor all individuals was described by the parameters a = 0.0149 and b = 3.09, with r2 = 0.99. The sample was composed of five age-classes (0-7 years). Three growth models were used to identify the growth characteristics: von Bertalanffy, Lt = Linf/[1 - exp(-k(t - t0))]; logistic, Lt = Linf/[1 +((L a - L0)/Lo)][exp(-rt )]; and Schnute and Richards, Lt=Linf1/2[1 + αexp(-at c)](-1/b). Among these, the Schnute and Richards model was best fitted to the data as Lt = 21:34[1 + 2:38exp(-0:34t 1:58)](-1/0:99) The diet was composed of Carcinus mediterraneus (18.2%), Crangon crangon (12.1%), unidentified crab species (10.6%), Gobius sp.(4.6%), Palaemon sp. (4.5%), Macropipus sp. (4.5%), Engraulis encrasicholus (1.5%), Gastropoda (1.5%), and unidentified remains (34.9%). © 2009 Blackwell Verlag, Berlin.