A Comparison of Catch Rates of C-Hooks and J-Hooks in the Hook-and-Line Tuna Fishery | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 75, Volume 29, Issue 2, March and April 2025, Pages 1205-1219 PDF (742.23 K) | ||
| DOI: 10.21608/ejabf.2025.418884 | ||
| Authors | ||
| Nghiep Vu; Khanh Nguyen | ||
| Abstract | ||
| Harvesting oceanic tuna species has played a very important role in the social economic development, income, and livelihoods throughout the central provinces of Vietnam. The hook-and-line (handline) with artificial light using J-shape hooks (so-called J-hooks) is the primary fishing method used to catch the yellowfin (Thunnus albacares) and bigeye tuna (Thunnus obesus) in the South China Sea. However, this fishery has a challenge of incidental catch of sea turtles. This study investigated the catch comparisons of hook-and-line fishery using C-shape hooks (so-called C-hooks) versus conventional J-hooks in the purpose of reducing the incidental catch of sea turtles. Field experiments were conducted from February to May 2022 onboard the commercial fishing boat and showed that C-hooks caught the same amount of all species compared to the J-hooks. In addition, C-hooks caught larger yellowfin tuna than the J-hooks. Our results show that the use of C-hooks in hook-and-line fishery has the ecological and economic benefit in terms of endangered species protection and maintenance of catch rates of wanted species. | ||
| Keywords | ||
| C-hook; Bycatch reduction; Sea turtles; Handlines; Tuna fishery | ||
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