Stock Assessment and Sustainable Potential of Skipjack Tuna (Katsuwonus pelamis) in Sibolga Waters for Optimized Fishing Practices
DOI:
https://doi.org/10.31258/jocos.6.01.59-64Keywords:
CPUE, MSY, TAC, skipjack tuna sustainabilityAbstract
The uncontrolled fishing of skipjack tuna (Katsuwonus pelamis) without recruitment efforts has led to stock degradation and unstable abundance due to excessive pressure. This study aims to estimate the sustainable potential of skipjack tuna by calculating Catch per Unit Effort (CPUE), assessing Maximum Sustainable Yield (MSY), and determining Total Allowable Catch (TAC). The research was conducted at PPN Sibolga and utilized survey-based data collection and surplus production analysis using the Schaefer model. The findings indicate that standardized CPUE in 2018 was 0.639 tons/trip, increased to 0.764 tons/trip in 2019, dropped to 0.527 tons/trip in 2020 and 0.506 tons/trip in 2021, and returned to 0.639 tons/trip in 2022. Purse seines were identified as the primary fishing gear. The Schaefer model estimated CMSY at 8,699.7 tons, classifying the fishery as fully exploited. FMSY was calculated at 5,447 trips, with annual efforts consistently exceeding this threshold, indicating overfishing. The TAC was set at 6,959.7 tons. Management strategies should regulate fishing efforts, enforce gear specifications, and implement science-based fisheries policies to prevent further degradation. Aligning fishing activities with sustainable thresholds will support skipjack tuna stocks' recovery and long-term productivity. These findings underline the importance of adaptive management and collaboration to sustain marine ecosystems and protect livelihoods.
Downloads
References
Abdullah, Z., Nuraini, Y., & Fauzi, M. (2021). Sustainable Management Strategies for Skipjack Tuna (Katsuwonus pelamis) in Fisheries Management Area 572. Journal of Fisheries Science and Management, 15(3): 200-210.
Adel, A., Subiyanto, S., & Fitriana, R. (2016). The Role of Fisheries Management in Maintaining Fish Resource Sustainability. Journal of Marine and Fisheries Science, 10(2): 115–125.
Hakim, L., Widodo, A., & Setiawan, D. (2022). Overfishing Analysis and its Implications for Skipjack Tuna (Katsuwonus pelamis) Stocks in West Sumatra. Journal of Marine Resource Sustainability, 18(2): 115-130.
Hasrun, H., Nurani, T. W., & Haluan, J. (2021). Application of Surplus Production Model for Sustainable Skipjack Tuna (Katsuwonus pelamis) Fisheries Management in Bone Gulf, Indonesia. Journal of Tropical Marine Science and Technology, 13(1): 1-12.
Hosseini, S. A., Wang, X., Eide, A., & Heino, M. (2018). Sustainable Fisheries Management: Balancing Harvest and Conservation. Marine Policy, 95: 179-18
Jamal, M., Nuraini, Y., & Akbar, M. (2011). Input Control Strategies in Fisheries through Fishing Gear Specification Regulations. Journal of Aquatic Resource Management, 7(3): 45–55.
Karnauskas, M., & Babcock, E.A. (2012). Catch Per Unit Effort (CPUE) as a Measure of Fishery Exploitation and Abundance: Case Studies in Tropical Fisheries. Marine Fisheries Review, 74(1): 1-11.
Mallawa, A., Rasyid, A., & Usman, A. (2014). Analysis of Mesh Size Regulations to Sustain Capture Fisheries. Indonesian Journal of Fisheries Resources, 20(1): 33–42.
Nurgiyantoro, S., Widodo, A.A., & Setyohadi, D. (2012). Analysis of Catch per Unit Effort (CPUE) and Maximum Sustainable Yield (MSY) of Skipjack Tuna (Katsuwonus pelamis) in Southeast Sulawesi Waters. Indonesian Fisheries Research Journal, 18(3): 183-190.
Pasaribu, M.W., Zain, J., & Nofrizal, N. (2024). Estimation of Sustainable Potential of Skipjack Tuna (Katsuwonus pelamis) Landed at PPN Sibolga, North Sumatra Province. Journal of Aquatic Science, 12(2): 244–249.
Pulungan, A. (2019). CPUE Analysis of Skipjack Tuna (Katsuwonus pelamis) at PPN Sibolga. Universitas Sumatera Utara.
Puspitha, N.M.D. (2021). Study on Sustainable Potential and Fishing Effort of Skipjack tuna at PPN Pengambengan, Bali. Faculty of Marine and Fisheries, Universitas Udayana.
Ramlah, S., La Sara, Padangaran, A., & Tadjuddah, M. (2020). Status of Catch per Unit Effort (CPUE) and Utilization Rate of Skipjack Tuna (Katsuwonus pelamis) in Kolaka Waters, Southeast Sulawesi, Indonesia. International Journal of Scientific & Technology Research, 9(1): 978-983.
Safruddin, H., Hidayat, R., Farhum, S.A., & Zainuddin, M. (2022). Statistical Model Application in Habitat Characterization of Skipjack Tuna During the Eastern Season in Bone Gulf, Indonesia. Biodiversitas, 23(4): 2231–2237.
Simanjuntak, B.F.E., Gigentika, S., & Sudarmo, A.P. (2024). Suitability Level of Purse Seine Fishing Areas at PPN Sibolga to Fisheries Management Regulations. Albacore, 8(2): 185–197.
Sparre, P., & Venema, S.C. (1998). Introduction to Tropical Fish Stock Assessment. Part 1: Manual. FAO Fisheries Technical Paper No. 306. Rome: FAO.
Sudrajat, D., Mualim, R., Hidayat, S., Handri, M., Choerudin, H., Nurlaela, E., Wibowo, B., & Madyantoro, H. I. (2022). Analysis of Skipjack Tuna Fishing Efforts Using Purse Seines at Nias Island Waters Landed in PPN Sibolga. Jalanidhitah Sarva Jivitam Bulletin, 4(2): 181–192.
Sugiyono, S. (2013). Research Methods: Quantitative, Qualitative, and R&D. Alfabeta. Bandung.
Syamsuddin, M., Zainuddin, M., & Saitoh, S. (2017). Detection of Pelagic Habitat Hotspots for Skipjack Tuna in Bone Gulf and Flores Sea, Indonesia. PLOS ONE, 12(9), e0185601.
Utami, D.F., Priyono, B., & Widodo, A.A. (2012). CPUE Decline Due to Increased Fishing Effort: A Case Study of Skipjack Tuna (Katsuwonus pelamis) in Southeast Sulawesi Waters. Indonesian Fisheries Research Journal, 18(3), 190–198.
Waileruny, W., & Matruty, D.J. (2014). Bio-Economics Analysis of Skipjack (Katsuwonus pelamis) Fishery on Banda Sea – Maluku Province. International Journal of Sciences: Basic and Applied Research (IJSBAR), 14(1), 239-251
Widiyastuti, H., Pane, A.R.P., Fauzi, M., & Hidayat, T. (2020). The Biological Aspect of Skipjack tuna (Decapterus macarellus) in the Indian Ocean (West Sumatra Block). Omni-Akuatika, 16(3): 1–8.
Yusran, Y., Cinnawara, H.T., & Syarifuddin, M. (2021). Laju Pertumbuhan Rumput Laut Eucheuma cattonii dengan Bobot Bibit Berbeda Menggunakan Jaringan Trawl dan Long Line. Fisheries of Wallacea Journal, 2(1): 10–19.
Zainuddin, M., Safruddin, S., Farhum, A., & Budimawan, B. (2024). Satellite-Based Habitat Prediction for Skipjack Tuna in the Makassar Strait, Indonesia. Geocarto International.
Zainuddin, M., Safruddin, S., Farhum, A., Budimawan, B., Hidayat, R., Selamat, M. B., Wiyono, E. S., Ridwan, M., Syamsuddin, M., & Ihsan, Y. N. (2023). Analysis of Hotspot Habitats and Movement Patterns of Commercial Skipjack Tuna Using Satellite Imagery in Indonesian Fisheries Management Area 713, Western Tropical Pacific. Remote Sensing, 15(5), 1268.
