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http://dx.doi.org/10.5657/KFAS.2022.0751

Fishing Characteristics of the Mesh Size and Flapper Connecting Line for a Rockfish Sebastes inermis Trap  

Heo, Gyeom (Fisheries Engineering Research Division, National Institute of Fisheries Science)
Cho, Sam-Kwang (Fisheries Engineering Research Division, National Institute of Fisheries Science)
Koo, Myung-Sung (Fisheries Engineering Research Division, National Institute of Fisheries Science)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.55, no.5, 2022 , pp. 751-757 More about this Journal
Abstract
To develop a trap to prevent the catch of juvenile rockfish Sebastes inermis and bycatch, we compared the fishing characteristics of four traps with different mesh sizes (35 mm and 50 mm) and flapper connecting lines (FCL) (3 lines and 4 lines).The number of rockfish caught in trap 1 (35 mm, 4 FCL) was 200, and juvenile rockfish (15 cm or less) accounted for 49.0%. The number of rockfish caught in trap 2 (35 mm, 3 FCL) was 185, and juvenile rockfish accounted for 58.9%. The number of rockfish caught in trap 3 (50 mm, 4 FCL) was 82, and juvenile rockfish accounted for 4.9%. The number of rockfish caught in trap 4 (50 mm, 3 FCL) was 68, and juvenile rockfish accounted for 22.1%. The total catch (bycatch rate) in trap 1, trap 2, trap 3 and trap 4 was 565 (64.6%), 637(71.0%), 260 (68.5%) and 276 (75.4%), respectively. The catch per unit effort (CPUE) for juvenile rockfish in trap 1, trap 2, trap 3 and trap 4 was 0.8, 0.9, 0.0, and 0.1 individuals/trap, respectively. The CPUE of bycatch in trap 1, trap 2, trap 3 and trap 4 was 2.9, 3.6, 1.4 and 1.7 individuals/trap, respectively.
Keywords
Rockfish; Trap; Bycatch; Mesh size; Flapper connecting line;
Citations & Related Records
Times Cited By KSCI : 10  (Citation Analysis)
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