By-catch ratios from the bogue (Boops boops) gillnet fishery around the sea-cage fish farms in Güllük Bay (Aegean Sea)

This study aims to reveal the by-catch rates for gillnet fishery, targeted Boops boops by small-scale fisheries around fish farms in Güllük Bay (Aegean Sea), and determine per unit effort (BPUE) rates. The was carried out through deck sampling at Göltürkbükü, Gündoğan, Yalıkavak, Torba fishing ports during two seasons between November April (2017-2018 / 2018-2019). A total of 147 operations from 13 boats were randomly monitored. In bogue, a 18163 kg catch caught 48 species belonging 30 families, including invertebrates. target most common with rate 91.9%, which 8.1% determined as by-catch. are Diplodus annularis (Linnaeus, 1758), Scomber colias (Gmelin, 1789), Trachurus trachurus Pagellus acarne (Risso, 1827), scombrus 1758). While average BPUE 4.77 ± 0.85 kg.1000 m-1 2018, it 3.20 0.58 2019. gives highest terms values. ranged 0 19.1 (mean: 7.97 2.83 m-1). Statistically, there is significant difference values months (Kruskal-Wallis test, p < 0.05).