Otolith biometry of Serranus scriba (Linnaeus, 1758) from the Southern Aegean Sea

Authors : Gökçen BİLGE

Pages : 259-264

Doi:10.28978/nesciences.468665

View : 19 | Download : 8

Publication Date : 2018-10-10

Article Type : Research Paper

Abstract :Otoliths are widely used in stomach content analysis in fisheries biology, other than age determination or ichthyo-archeological studies, because they have species specific morphological features. It is possible determine size and species of the prey fishes in the digestive system of the piscivorous aquatic predators. In this study, the relationships were calculated between sagittal otolith measurements insert ignore into journalissuearticles values(otolith length insert ignore into journalissuearticles values(OL);, height insert ignore into journalissuearticles values(OH); and weight insert ignore into journalissuearticles values(OW);); and fish size insert ignore into journalissuearticles values(length insert ignore into journalissuearticles values(TL);, weight insert ignore into journalissuearticles values(W);); in painted comber Serranus scriba insert ignore into journalissuearticles values(Linnaeus, 1758); specimens insert ignore into journalissuearticles values(N=763, 68–241 mm in TL and 3.66–228.72 g);. Fish specimens captured via bottom trawl vessels from off the Güllük Bay insert ignore into journalissuearticles values(Southern Aegean Sea); between January and December 2013. Regression equations were calculated as follows: TL= 20.11*OL+40.28, TL= 44.07*OH+50.24, TL= 969.1*OW0.410, W= 1.212*OL2.194, W= 11.16*OH1.850, W= 5913*OW–12.22, OH= 0.218*OL+1.213, OW= 0.00045*OL1.843, OW= 0.002*OH1.672. Calculated regressions were displayed a high coefficient of determinations ranging between 0.822 - 0.892. Otolith length insert ignore into journalissuearticles values(R2= 0.890); is the best indicator of the prediction of the fish length by examining the regression coefficients for S. scriba.
Keywords : Painted comber, Serranidae, sagittae, sagittal otolith biometry