This study aimed to identify the selectivity of catches according to mesh size of gillnets, and to collect basic data for fisheries resource management plans for gillnets. The mesh selectivity test was conducted with five different mesh sizes (60, 66, 69, 75, and 96 mm) gillnet in coastal sea of Mukho port and the selectivity was analyzed using the Kitahara method. In results of the selectivity test, a total of 143 (36,249 g) of atka mackerel were caught and the 60 mm gillnet was the highest at 83 (18,596 g), which is about 58.0% of the total catch. The relative growth equation between body length and weight showed that weight tends to increase proportional to body length. The maximum length/mesh size value was showed 0.490 by the master curve of selectivity, and the 50% selection range was showed 0.138. Therefore, it was found that the size of the caught fish increased proportional to the mesh size. The results of this study were intended to be used as data for establishing a plan for efficient management of atka mackerel resources.

서 론
재료 및 방법
결과 및 고찰
    어획시험 결과
    체장과 체중의 관계
    망목선택성 곡선 추정
결 론
사 사
References

• 김재형(국립수산과학원 서해수산연구소 연구원) | Jaehyung KIM (Researcher ,Fisheries Resources and Environment Research Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science, Gangneung 25435, Korea)
• 백정익(국립수산과학원 동해수산연구소 연구원) | Jeongik BAEK (Researcher, Fisheries Resources and Environment Research Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science, Incheon 22383, Korea)
• 김성훈(국립부경대학교 해양생산시스템관리학부 교수) | Seonghun KIM (Professor, Division of Marine Production System Management, Pukyong National University, Busan 48513, Korea) Corresponding author