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All Journal Jurnal Kelautan Tropis AGRIKAN Jurnal Ilmiah Agribisnis dan Perikanan Jurnal Penelitian Perikanan Indonesia Prosiding Seminar Nasional Kemaritiman dan Sumber Daya Pulau-Pulau Kecil Agrikan: Jurnal Agribisnis Perikanan ABDIMAS KAUNIAH
Kaidati, Bahar
Universitas Khairun
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Environmental Science Social Sciences

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STATUS KEBERLANJUTAN USAHA PERIKANAN TUNA MADIDIHANG BERBASIS BIOLOGI DAN EKONOMI DI PANGKALAN PENDARATAN IKAN DUFA-DUFA KOTA TERNATE Kaidati, Bahar; Umsohy, Jehan Safira; Karman, Amirul; Muksin, Darmiyati; Taeran, Imran
Jurnal Penelitian Perikanan Indonesia Vol 31, No 3 (2025): (September 2025)
Publisher : Politeknik Kelautan dan Perikanan Karawang, BRSDM KP.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jppi.31.3.2025.105-117

Abstract

Fishermen at the Dufa-Dufa fish landing base, Ternate City, exploit yellowfin tuna using pole and line and FADs. Huhate is a fishing gear in the surface layer, so the yellowfin tuna that is caught is the yellowfin tuna that appears on the surface for the purpose of eating. In general, yellowfin tuna that gather on the surface of the water are classified as young fish. Therefore, yellowfin tuna caught around FADs tend to be young fish. This phenomenon causes the emergence of a problem, namely the dominance of young fish caught, besides that the yellowfin tuna fishery is an activity of exploiting fish resources with the aim of obtaining continuous profits. The aim of this research is to analyze biological aspects which include fork length structure and size of yellowfin tuna worth catching, analyze economic aspects which include profit analysis, net benefit cost ratio, internal rate of return, break even point, and payback period and analyze the status of the fishing business. sustainable yellowfin tuna. The research was carried out at the Dufa-Dufa fish landing base in Ternate City for 7 months, namely July 2022 - January 2023. The research method used was a survey method. The yellowfin tuna fishery business in the research location is dominated by the size not yet fit to catch, which is 100%. Financially and investment, the yellowfin tuna fishery business in the research location is feasible throughout the year. The yellowfin tuna fishery business based on the biological aspect has a low level of sustainability. Furthermore, based on the economic aspect (financial and investment criteria) the yellowfin tuna fishery business has high sustainability.
Effect of Sea Surface Temperature and Chlorophyll-a On the Catch of Yellowfin Tuna (Thunnus albacares) in The Waters of North Maluku, Indonesia Muksin, Darmiyati; Rumagia, Faizal; Syukur, Kartina; Abubakar, Salim; Kadir, Irwan Abdul; Taeran, Imran; Darmawaty, Darmawaty; Kaidati, Bahar
Jurnal Kelautan Tropis Vol 28, No 3 (2025): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v28i3.29397

Abstract

The waters of North Maluku, abundant in nutrients and ocean currents, provide an ideal habitat for yellowfin tuna (Thunnus albacares), indicating a healthy marine ecosystem. Tuna, an oceanic pelagic species that migrates with ocean currents, is affected by sea surface temperature (SST) and chlorophyll-a plays an important role in determining yellowfin tuna fishing grounds. This study aims to analyze the spatial and temporal distribution of SST and chlorophyll-a concentration in North Maluku waters and analyze the relationship between SST, chlorophyll-a, and tuna catches. The present study employed both descriptive and quantitative analysis methods to examine the relationship between sea surface temperature, chlorophyll-a, and yellowfin tuna catch. The result shows that the temporal fluctuations in the highest recorded SST were seen in the 2021 transitional season, and the lowest in the 2019 East season. Chlorophyll-a concentrations also showed fluctuations, with the highest value recorded in the 2019 East season and the lowest in the 2020 second transitional season. There is an inverse correlation between SST and chlorophyll-a, with low SST tending to be accompanied by high chlorophyll-a concentrations. The decline in chlorophyll-a concentration can be attributed to various factors, including nutrient availability, sunlight intensity, and water temperature. About 17.48% of the catch of yellowfin tuna (Thunnus albacares) in North Maluku waters is influenced by SST and chlorophyll-a while the rest is influenced by other factors. This indicates that other factors play an important role in determining the catch of yellowfin tuna in North Maluku waters.
Co-Authors Abd. Mutalib, Nurhasna Abdullah, Yasmin Abdullah Abubakar, Salim Adi Noman Susanto Azis, Muh. Aksa Darmawaty, Darmawaty Darmiyati Muksin Fikri Rizky Malik H Iksanan, Kusdi Hapzi Ali Hi. Iksan, Kusdi Irwan Abdul Kadir Karman, Amirul Karman, Amirul Martini Djamhur, Martini Mujais Tou Mutmainnah Mutmainnah Putri, Saptariani Riani, Syeha Filna Riyadi Subur, Riyadi Rumagia, Faizal Rumaiga, Faizal Surahman Surahman Syukur, Kartina Taeran, Imran Tou, Mujais Umsohy, Jehan Safira Wulandari, Tri Laela Yuliana Yuliana