Update Artikelilmiah: 9770

NIKI WIJAYANTI

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Abstrak (Bhs. Indonesia)

Ikan patin (Pangasius hypophthalmus) merupakan ikan bernilai ekonomis tinggi dan menjadi target tangkapan nelayan di Waduk Gajah Mungkur (WGM). Pengkajian stok ikan patin diperlukan sebagai dasar pengelolaan sumber daya ikan patin di WGM. Penelitian ini bertujuan untuk mengetahui nilai MSY, fMSY, Y/R, dan laju eksploitasi (E) ikan patin di WGM. Penelitan dilakukan dengan metode survei melalui observasi dan wawancara pada bulan Juni-Juli 2014  dengan jumlah responden 25 nelayan. Data produksi dan upaya tahun 2009-2013 diperoleh dari Dinas Peternakan, Perikanan dan Kelautan Kabupaten Wonogiri. Sampel ikan patin yang didapat selama penelitian sebanyak 300 ekor, panjang ikan patin diukur dengan ketelitian 0,1 cm dan ditimbang beratnya dengan ketelitian 1 gr. Data produksi dan upaya dianalisis dengan model produksi surplus Schaefer dan Fox. Mortalitas total (Z) dianalisis dengan Beverton & Holt, mortalitas alami (M) dan penangkapan (F) dianalisis dengan rumus empiris Pauly, Y/R dianalisis dengan metode Beverton & Holt. Hasil penelitian ini menunjukkan CPUE ikan patin yang masih berkembang sehingga nilai MSY belum dapat diketahui. Nilai L∞= 91,77 cm, K= 0,89 per tahun, M = 0,85 per tahun, F= 0,81 per tahun, Z = 1,66 per tahun, E = 0,49 per tahun, Y/R= 0,1629 gr/rekrut dan t0 = 0,13 dengan persamaan kurva pertumbuhan von Bertalanffy Lt = 91,77[1-exp-0,89(t-0,13)]. Berdasarkan tren CPUE dan laju eksploitasi, perikanan ikan patin di Waduk Gajah Mungkur dalam kategori mendekati eksploitasi maksimum.

Abtrak (Bhs. Inggris)

Catfish (Pangasius hypophthalmus) has high economic value and it has being targeted by fishermen in Gajah Mungkur Reservoir (WGR). Catfish stock assessment was needed as a basic information for catfish resource management in WGR. This research aims to determine MSY, fMSY, Y/R, and exploitation rate (E) of catfish in WGR. The research was conducted with survey method by observation and interview in June-July 2014 with total respondents 25 fishermen. Catch and effort data from 2009-2013 was obtained from Department of Animal husbandry, Fisheries and Marine, Wonogiri regency. 300 samples of Pangasius hypophthalmus was collected during observation, catfish length was measured to the nearest 0,1 cm and weighted to the nearest 1 g. Catch and effort data were analyzed by Schaefer and Fox surplus production model. The total mortality (Z) was analyzed by Beverton & Holt model, natural mortality (M) and fishing mortality (F) were analyzed by Pauly’s empirical formula, and Y/R was analyzed by Beverton & Holt method. The research showed that CPUE of Pangasius hypophthalmus was still in growth phase, so that MSY value can not be predicted. L∞= 91,77 cm, K= 0,89 by the year, M= 0,85 by the year, F=0,81 by the year, Z= 1,66 by the year, E= 0,49 by the year, Y/R= 0,1629 g/rekrut and t0= 0,13 with von Bertalanffy growth curva equation Lt =  91,77[1-exp-0,89(t-0,13)]. Based on CPUE trend and exploitation rate catfish fishery in GMR was categorize as maximum exploited.

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