Size Structure and Catch of Yellowfin Tuna (Thunnus albacares) Landed in Sumare Village, Mamuju Regency
DOI:
https://doi.org/10.59890/ijarss.v4i7.24Keywords:
Thunnus Albacares, Panjang-Berat, Alometrik Positif, Produksi, Desa SumareAbstract
Yellowfin tuna (Thunnus albacares) is a high-economic-value fishery commodity and the main target of handline fishers in Sumare Village, Mamuju Regency, West Sulawesi. This study aims to analyze the size structure, length-weight relationship, and catch production of yellowfin tuna landed in Sumare Village. Sampling was conducted from January to February 2026 using a purposive sampling method on two handline fishing vessels, with a total of 30 fishing trips and 350 fish samples. For each individual fish, standard length (SL), fork length (FL), total length (TL), and body weight were measured. The results showed a total production of 25,466.0 kg from 350 fish during 30 trips. Fork length ranged from 95 to 165 cm FL with an average of 141.1 ± 20.0 cm, and weight ranged from 13.5 to 129.9 kg with an average of 72.8 ± 33.0 kg. The size distribution was dominated by the 150-165 cm FL class (50.0%) and the ≥ 100 kg weight class (26.0%). The length-weight relationship produced the equation W = 3.57 × 10⁻⁷ × L³.⁸⁴⁵³ (R² = 0.9784; b = 3.8453; calculated t = 27.60 > table t = 1.967), indicating a positive allometric growth pattern. A total of 96.3% of the fish (337 of 350 individuals) exceeded the catchable size (FL ≥ 100 cm).
References
Agatis, M., Siregar, A.N., Simbolon, D., Irawan, F., & Siregar, I.H. (2025). Size structure and length-weight relationship of yellowfin tuna (Thunnus albacares) in West Sumatra waters. Jurnal Ilmu Perikanan, 14(1), 1-12. [Recent primary research data, link not yet available]
Agustina, R. (2024). Size structure and condition factor of yellowfin tuna (Thunnus albacares) landed at Prigi Archipelagic Fishing Port. Undergraduate thesis. Universitas Brawijaya, Malang. Available at: https://repository.ub.ac.id/
Barata, A., Novianto, D., & Bahtiar, A. (2011). Distribution of tuna based on temperature and depth in the Indian Ocean. ILMU KELAUTAN: Indonesian Journal of Marine Sciences, 16(3), 165-170. DOI: https://doi.org/10.14710/ik.ijms.16.3.165-170
Kantun, W., & Mallawa, A. (2016). Biology of Yellowfin Tuna. UGM Press, Yogyakarta.
Kantun, W., Mallawa, A., & Rapi, N.L. (2014). Size structure and number of yellowfin tuna (Thunnus albacares) caught according to fishing time and depth in the Majene waters of the Makassar Strait. Saintek Perikanan: Indonesian Journal of Fisheries Science and Technology, 9(2), 39-48. DOI: https://doi.org/10.14710/ijfst.9.2.39-48
Kantun, W., Mallawa, A., Amir, F., & Hidayat, T. (2018). Length-size distribution and catches of yellowfin tuna based on fishing time and fishing area in the Makassar Strait. Jurnal IPTEKS PSP, 5(9), 14-25. Available at: https://journal.unhas.ac.id/index.php/iptekspsp
KKP RI. (2024). Capture Fisheries Production Statistics Data. Ministry of Marine Affairs and Fisheries of the Republic of Indonesia, Jakarta. Available at: https://statistik.kkp.go.id
Le Cren, E.D. (1951). The length-weight relationship and seasonal cycle in gonad weight and condition in perch (Perca fluviatilis). Journal of Animal Ecology, 20(2), 201-219. DOI: https://doi.org/10.2307/1540
Noija, D., Martasuganda, S., Murdiyanto, B., & Taurusman, A.A. (2014). Potential and utilization level of demersal fish resources in the waters of Ambon Island, Maluku Province. Jurnal Teknologi Perikanan dan Kelautan, 5(1), 55-64. DOI: https://doi.org/10.24319/jtpk.5.55-64
Nugroho, S.C., Jatmiko, I., & Wujdi, A. (2018). Growth pattern and condition factor of yellowfin tuna (Thunnus albacares Bonnaterre, 1788) in the Eastern Indian Ocean. Jurnal Iktiologi Indonesia, 18(1), 13-21. DOI: https://doi.org/10.32491/jii.v18i1.371
Roswati. (2023). Study of small-scale capture fisheries in West Sulawesi waters: A case study of handline fishing for large pelagic fish in Mamuju Regency. Thesis. Integrated Coastal Resource Management Master's Program, Universitas Hasanuddin, Makassar. Available at: https://repository.unhas.ac.id/
Sudirman, H. (2020). Introduction to Fishing Gear and Methods. PT Rineka Cipta, Jakarta.
Sudirman, H., Mallawa, A., Amir, F., & Musbir. (2020). Distribution of fishing grounds and catch characteristics of yellowfin tuna in South Sulawesi waters. Jurnal Ipteks PSP, 7(13), 1-15. Available at: https://journal.unhas.ac.id/index.php/iptekspsp
Zar, J.H. (1984). Biostatistical Analysis. 2nd Ed. Prentice-Hall, New Jersey.
