Akademik Veri Yönetim Sistemi
5th International Eurasian Congress on "Natural Nutrition Healthy Life & Sport", Ankara, Türkiye, 2 - 06 Ekim 2019, cilt.1, no.1, ss.229-237
In pelagic fishing, Izmir Bay is one of the important
points in the Turkish Coasts of the Aegean Sea. The aim of this study is to
determine the distribution of the pelagic fish shoals in Izmir Bay by using the
acoustic method. The study was carried out in June 2019 at 3 different stations,
Ship-Route, Gülbahçe and Mordoğan in the İzmir Bay. Biosonics DT-X scientific
echo-sounder (120 kHz split-beam) by mounted on the EgeSüf research vessel was
used in this study. The line transect sampling was preferred for the
determination of pelagic fish shoals and, Humminbird 1198-SCI navigation
equipment was used in the formation and following of transects. Biosonics
Visual Acquisition-6.2 software was used for acoustic data collection and
Biosonics-Visual Analyzer 4.3 program was used for data analysis. In this
study, 481 fish shoals in Ship-Route, 119 fish shoals in the Gülbahçe and 71
fish shoals in the Mordoğan were identified. Although the depths of the fish
flocks ranged from 5.1 and 55.4 m, the average number of fish per unit area was
calculated between 2.1510 and 8.4431 FPUA. According to the stations, the mean
TS were determined as -46.12 dB. As a result of this study, the Ship-Route
station with deeper waters has a higher school of fish. This study, if
supported by oceanographic data, may be useful in determining fishing
prohibitions for fisheries management.