FORK-LENGTH DISTRIBUTION OF HANDLINE-CAUGHT SKIPJACK TUNA (Katsuwonus pelamis) AT OEBA FISH LANDING BASE, KUPANG, 2018–2022
DISTRIBUSI PANJANG CAGAK IKAN CAKALANG (Katsuwonus pelamis) PANCING ULUR DI PPI OEBA, KUPANG, 2018–2022
DOI:
https://doi.org/10.24319/jtpk.17.461-468Keywords:
fisheries management, fork length distribution, handline fishery, length-based assessment, skipjack tunaAbstract
Skipjack tuna (Katsuwonus pelamis) is one of Indonesia’s important fishery commodities with high economic value. However, limited information on length-based population characteristics, particularly from small-scale fisheries in Fisheries Management Area (FMA) 573, remains a challenge for evaluating stock utilization and supporting sustainable fisheries management. This study analyzed the fork length (FL) distribution of skipjack tuna caught by handline fisheries and landed at Oeba Fish Landing Base, Kupang, East Nusa Tenggara, during 2018–2022. A total of 33,568 individuals were measured using a structured sampling approach from handline landings. Fork length distributions were analyzed by year and fishing ground using descriptive statistics and inferential statistical tests. We used the Kruskal–Wallis test with pairwise comparisons to evaluate annual differences in fork length, and the two-sample Kolmogorov–Smirnov test to assess differences in length-frequency distributions among fishing grounds. The results showed that skipjack tuna had a fork length range of 15–80 cm during the study period. Fork length distributions differed significantly among years, indicating temporal variation in catch size composition. Significant differences were also observed among fishing grounds, demonstrating spatial variation in length-frequency structures of handline-caught skipjack tuna. These findings provide improved baseline information on the size structure of skipjack tuna catches and support length-based fisheries assessment and adaptive management strategies in eastern Indonesian waters.
Downloads
References
Aoki Y, Kitagawa T, Kiyofuji H, Okamoto S, Kawamura T. 2017. Changes in Energy Intake and Cost of Transport by Skipjack Tuna (Katsuwonus pelamis) during Northward Migration in the Northwestern Pacific Ocean. Deep-Sea Research Part II: Topical Studies in Oceanography. 140: 83–93. DOI: https://doi.org/10.1016/J.DSR2.2016.05.012.
Chang YC, Chiang WC, Madigan DJ, Tsai FY, Chiang CL, Hsu HH, Lin SM, Zhuang MY, Sun CT, Chen LC, et al. 2022. Trophic Dynamics and Feeding Ecology of Skipjack Tuna (Katsuwonus pelamis) off Eastern and Western Taiwan. Molecules. 27(3): 1073. DOI: https://doi.org/10.3390/molecules27031073.
Chodrijah U, Hidayat T, Wagiyo K. 2020. Some Reproductive Biology of Skipjack Tuna (Katsuwonus pelamis Linnaeus, 1758) in Toli-Toli Waters, Central Sulawesi. Indonesian Fisheries Research Journal. 26(1): 1–10. DOI: https://doi.org/10.15578/ifrj.26.1.2020.1-10.
Danial, Baroqi AR, Wildan, Timur PS, Syahrul. 2023. Composition of Tuna Catch Hand Line at the Fish Landing Base (FLB) Lonrae, Bone Regency, South Sulawesi Province, Indonesia. Asian Journal of Fisheries and Aquatic Research. 25(5): 20–27. DOI: https://doi.org/10.9734/ajfar/2023/v25i5696.
[FAO] Food and Agriculture Organization. 2022. The State of World Fisheries and Aquaculture 2022: Towards Blue Transformation. Rome (IT): FAO.
Jatmiko I, Hartaty H, Bahtiar A. 2015. Biologi Reproduksi Ikan Cakalang (Katsuwonus pelamis) di Samudera Hindia Bagian Timur. BAWAL Widya Riset Perikanan Tangkap. 7(2): 87–94.
Khan AMA, Dewanti LP, Apriliani IM, Supriadi D, Nasution AM, Gray TS, Mill AC, Polunin NVC. 2020. Study on Market Process of Tuna Pole-and-Line Fishery in Eastern Indonesia: A Study Case in Sorong, Papua Barat Province. Indonesian Fisheries Research Journal. 26(1): 33–39. DOI: https://doi.org/10.15578/ifrj.26.1.2020.33-39.
Kurniawan R, Setyadji B, Nugroho SC, Wibawa TA. 2020. Spatio-temporal Variations of Yellowfin Tuna Caught by Handline in the Indian Ocean, South of Nusa Tenggara. Saintek Perikanan: Indonesian Journal of Fisheries Science and Technology. 16(3): 187–191. DOI: https://doi.org/10.14710/ijfst.16.3.187-191.
Marpaung S, Supriatna, Manessa MDM, Yati E. 2025. Analysis of Potential Pelagic Fishing Zone Research in Indonesian Waters: Trends and Research Gaps. 4th International Seminar of Natural Resources and Environmental Management (4th ISeNREM 2025), July 31–August 1, 2025, Bogor, Indonesia. IOP Conference Series: Earth and Environmental Science. DOI: https://doi.org/10.1088/1755-1315/1557/1/012041.
[MMAF RI] Ministry of Marine Affairs and Fisheries of the Republic of Indonesia. 2022. Annual Report of Indonesian Fisheries Export Performance 2022. Jakarta (ID): Ministry of Marine Affairs and Fisheries of the Republic of Indonesia.
Nataniel A, Lopez J, Soto M. 2021. Modelling Seasonal Environmental Preferences of Tropical Tuna Purse Seine Fisheries in the Mozambique Channel. Fisheries Research. 243: 106073. DOI: https://doi.org/10.1016/j.fishres.2021.106073.
Nurani TW, Wahyuningrum PI, Iqbal M, Khoerunnisa N, Pratama GB, Widianti EA, Kurniawan MF. 2022. Skipjack Tuna Fishing Season and Its Relationship with Oceanographic Conditions in Palabuhanratu Waters, West Java. Malaysian Applied Biology. 51(1): 137–148. DOI: https://doi.org/10.55230/mabjournal.v51i1.2151.
Nurdin E, Taufik M, Lestari P, Ma’mun A, Kembaren DD, Tirtadanu T, Noegroho T, Prihatiningsih P, Panggabean AS. 2025. Stock Status of Skipjack Tuna (Katsuwonus pelamis Linnaeus, 1758) using Length-Based Assessment in Cenderawasih Bay, Indonesia. Sains Malaysiana. 54(5): 1209–1220. DOI: https://doi.org/10.17576/jsm-2025-5405-01.
Regulation of the Minister of Marine Affairs and Fisheries of the Republic of Indonesia Number 36 of 2023 concerning the Placement of Fishing Gear and Fishing Aids in Measurable Fishing Zones and Fisheries Management Areas of the State of the Republic of Indonesia in Inland Waters. Jakarta.
Restiangsih YH, Amri K. 2018. Aspek Biologi dan Kebiasaan Makanan Ikan Cakalang (Katsuwonus pelamis) di Laut Flores dan Sekitarnya. BAWAL Widya Riset Perikanan Tangkap. 10(3): 187–196.
Sari TEY, Usman U, Wahyuningrum PI. 2022. Distribusi Spasial dan Temporal Ikan Tuna (Thunnus sp.) di Perairan Barat Sumatera Berbasis Sistem Informasi Geografis. Marine Fisheries: Journal of Marine Fisheries Technology and Management. 11(2): 201–211. DOI: https://doi.org/10.29244/jmf.v11i2.33515.
Setiyawan A, Rice MA, Satria F, Widodo AA. 2021. Estimates of Length-Based Population Parameters of Skipjack Tuna (Katsuwonus pelamis, Linnaeus 1798) from a Pole & Line Fishery in Maumere-Sikka, Indonesia. Indonesian Fisheries Research Journal. 27(1): 37–49. DOI: https://doi.org/10.15578/ifrj.27.1.2021.37-49.
Siregar ESY, Simbolon D, Wahju RI, Yulianto I, Siregar VP. 2025. Yellowfin Tuna (Thunnus albacares) Fisheries Sustainability: A Weight-Length Analysis in the West Sumatera Waters. Jurnal Teknologi Perikanan dan Kelautan. 16(3): 282–293. DOI: https://doi.org/10.24319/jtpk.16.282-293.
Wang J, Chen X, Chen Y. 2016. Spatio-temporal Distribution of Skipjack in Relation to Oceanographic Conditions in the West-central Pacific Ocean. International Journal of Remote Sensing. 37(24): 6149–6164. DOI: https://doi.org/10.1080/01431161.2016.1256509.
Yapanto LM, Nursinar S. 2020. Traditional Handline Fishing in Pohuwato Regency, Indonesia. Journal of International Conference Proceedings. 3(3): 24–30. DOI: https://doi.org/10.32535/jicp.v2i5.926.
Yen KW, Su NJ, Teemari T, Lee MA, Lu HJ. 2016. Predicting the Catch Potential of Skipjack Tuna in the Western and Central Pacific Ocean Under Different Climate Change Scenarios. Journal of Marine Science and Technology. 24(6): 1053–1062. DOI: https://doi.org/10.6119/JMST-016-0713-1.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This journal is published under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License. Authors who publish with this journal agree to the following terms: Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. NonCommercial — You may not use the material for commercial purposes.
