Abstract
OZET: Bu calisma Orta Karadeniz de Eylul 2002 - Nisan 2003 tarihleri arasinda gerceklestirilmistir. Calismada ticari teknelerle avlanan, mezgit (Gadus merlangus euxinus), barbunya (Mullus barbatus ponticus), kalkan (Psetta maxima maeotica), istavrit (Trachurus mediterraneus) ve cinekop (Pomatomus saltator), baliklarinin sig ( 75m) su kesimlerine ait av verileri degerlendirilmistir. Calismada ozellikle mezgit ve barbunya baliklarinin buyukluklerinin, avlamanin yapildigi aylar ve derinliklere gore onemli olcude degistigi belirlenmistir (p 75 m). Length compositions on these species were also analysed. The mean lengths of whiting and red mullets were significantly different by months and depths (p<0.05). Most of these differences were observed in November and December. We conclude that, fishing season and depths at which trawlings were performed had significant effect on the size of species caught in the study area. But it was not the case for the all species concerned. Key words: Middle Black Sea, bottom trawl, catch composition
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