relation: https://eprints.untirta.ac.id/44692/ title: PENDUGAAN POTENSI LESTARI MADIDIHANG (Thunnus albacares) BERBASIS DATA YANG DIDARATKAN DI PPN SIBOLGA SUMATERA UTARA creator: SIPAHUTAR, YESIKA subject: SH Aquaculture. Fisheries. Angling description: Yellowfin tuna (Thunnus albacares), commnly known as yellow fin tuna, is one of Indonesia’s export commodities and the third-highest fishery production at PPN Sibolga. The production of maddihang has fluctuated over the past eight years, raising concerns about potential over exploitation. The aim of this research is to estimate the maximum sustainable yield (MSY), determine the optimal fishing effort for the madidihang resources, determine the best surplus production model and determine the level of utilization and exploitation of madidihang fisheries in PPN Sibolga. The method used in this study is quantitative descriptive. This study uses statistical data on capture fisheries from 2016-2023 at PPN Sibolga and uses a surplus production approach. The results of this study show that the best model, namely with the highest determination coefficient value, is the scnute model of 95%. Meanwhile, the maximum sustainable yield ( YMSY ) value for madidihang catch at Sibolga is 3855 tons with fully exploited status (81%), with the optimum catch effort value of 1733 trips with fully exploited status (84%). This study has a suggestion, namely that it is necessary to conduct an evaluation every year and a bio-economic analysis needs to be carried out to support the policy of managing madidihang resources in the Sibolga PPN. date: 2024 type: Thesis type: NonPeerReviewed format: text language: id identifier: https://eprints.untirta.ac.id/44692/1/Yesika%20Sipahutar_4443200084_FULLTEXT.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/2/Yesika%20Sipahutar_4443200084_CP.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/3/Yesika%20Sipahutar_4443200084_01.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/4/Yesika%20Sipahutar_4443200084_02.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/5/Yesika%20Sipahutar_4443200084_03.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/6/Yesika%20Sipahutar_4443200084_04.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/7/Yesika%20Sipahutar_4443200084_05.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/8/Yesika%20Sipahutar_4443200084_REF.pdf format: text language: id identifier: https://eprints.untirta.ac.id/44692/9/Yesika%20Sipahutar_4443200084_LAMP.pdf identifier: SIPAHUTAR, YESIKA (2024) PENDUGAAN POTENSI LESTARI MADIDIHANG (Thunnus albacares) BERBASIS DATA YANG DIDARATKAN DI PPN SIBOLGA SUMATERA UTARA. S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.