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- Title
Preliminary information for the small-scale yellowfin tuna fishery management in Nayarit, Mexico.
- Authors
Jurado-Molina, Jesús; Flores-Olivares, Jorge; Humberto Hernández-López, Carlos; Villaseñor-Talavera, Raúl; Alejandro Mendoza-Munguía, José
- Abstract
The small-scale tuna longline fishery operating on the coast of Nayarit started recently in 2013. We provide the first detailed report on some biological parameters for the yellowfin tuna (YFT) in Nayarit (Mexico). We sampled 584 YFT, representing a catch of 25.5 t. We fit the length-weight relationship, used the t-test to determine the type of growth, and estimated the selectivity curve. The total length data varied from 73.0 to 228.0 cm, with a mean of 153.0 ± 23.5 cm (mean ± SD). Weight ranged from 5.8 to 128.0 kg, with a mean of 43.7 ± 19.4 kg. Length-weight fitting results and the t-test suggested negative allometric growth. Selectivity fitting results suggested that selectivity follows an asymptotic pattern. Our results represent the first step into gathering information to establish research and monitoring programs for the YFT on the Pacific coast of Mexico. The information provided in this study could help develop proper regulations to assure a well-managed fishery and the sustainable exploitation of YFT in Nayarit.
- Subjects
NAYARIT (Mexico); YELLOWFIN tuna; FISHERY management; BIOLOGICAL specimen analysis; SELECTIVITY of fishery gear
- Publication
Ciencias Marinas, 2022, Vol 48, p1
- ISSN
0185-3880
- Publication type
Article
- DOI
10.7773/cm.y2022.3275