Species composition and bycatch rate of the catches by dredge with bycatch reduction device to reduce bycatch were estimated around Yeongil Bay, Korea at June, 2015. Total catches were collected 31 species as Chordata 10 species, mollusca 8 species, arthropoda 6 species, echinodermata 5 species, sipunculida 1 species, annelida 1 species during the experiment at the Yeongil Bay. The dominant species were Scapharca broughtonii, Callithaca adamsi, and Atrina pectinata and they reached 79.9% of the total catch. The catch rate of Scapharca broughtonii and Callithaca adamsi was 69.6% and 10.4% respectively. The rate of bycatch was 20.1%, consisted with Echinodemata 13.0%, Chordata 3.6%. The catch of ordinary dredge was 27 species 1,307 number 85,052g and that of dredge with escapement device was 21 species 1,690 number 91,648g. In conclusion, the dredge gear with bycatch reduction device has higher catch rate of target species and lower bycatch rate to non–target species than ordinary one.

• 안희춘 | Heui–Chun AN
• 박해훈 | Hae–Hoon PARK
• 박종명 | Jong–Myung PARK
• 홍성익(국립수산과학원 동해수산연구소 자원환경과) | Sung–Eic HONG (Fisheries Resources and Environment Research Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science, Gangneung 210–861, Korea)
• 윤병선 | Byoung-Sun YOON
• 박창두(국립수산과학원 동해수산연구소 자원환경과) | Chang-Doo PARK (Fisheries Resources and Environment Research Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science, Gangneung 210–861, Korea)
• 배재현 | Jae–Hyun BAE Corresponding author