표제지
목차
Abstract 8
Ⅰ. 서론 10
Ⅱ. 재료 및 방법 12
1. 어업실태조사 12
2. 해상 어획 시험 13
1) 시험어구 13
2) 시험방법 15
3. 성숙체장 추정 17
4. 망목선택성 곡선 추정 18
Ⅲ. 결과 20
1. 어업 실태조사 결과 20
2. 해상 어획시험 조업 결과 24
3. 성숙체장 32
4. 망목크기선택성 34
Ⅳ. 고찰 41
Ⅴ. 결론 43
참고문헌 46
Table 1. Species composition of fishes caught by the experimental gillnet 26
Table 2. Length distributions of oliver flounder caught by four different mesh sizes of gillnet 35
Table 3. Parameter estimates and model deviance for each model 36
Table 4. The Mesh size(mm) of 25%, 50%, 75% selection for MLS of oliver flounder and the selection ranges in each selection curve model. 39
Table 5. The Mesh size(mm) of 25%, 50%, 75% selection for Minimum landing size(35 cm) of oliver flounder and the selection ranges in... 40
Fig. 1. A schematic presentation of (a) the construction of the experimental gillnet for oliver flounder and (b) the layout of netting panels in... 14
Fig. 2. Location of the experimental area for testing mesh selectivity of the gillnet for oliver flounder. 16
Fig. 3. Monthly average catch of oliver flounder in Korea waters(a) and in the East Sea(b) from 2018 to 2022. 22
Fig. 4. Fishing vessel and gillnet for oliver flounder used in the coastal sea of Gajin-port. 23
Fig. 5. Monthly catch of oliver flounder caught by the experiment in the East Sea. 28
Fig. 6. Relationship between total length and weight of oliver flounder. 29
Fig. 7. Length distributions of the oliver flounder caught by experimental fishing gear in the East Sea. 30
Fig. 8. Length distributions of oliver flounder caught by four different mesh sizes of the experimental nets. 31
Fig. 9. Relationship between total length and group maturity of the oliver flounder caught in the East Sea. 33
Fig. 10. Comparison with the master curve of the gillnet for oliver flounder by four different methods. 37