Browsing by Author "Tang, Usman M"

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    Bioeconomic Analysis of Capture Fisheries in Bengkalis Regency
    (2016-03-29) Rengi, Pareng; Tang, Usman M; Siregar, Yusni Ikhwan
    Bengkalis coastal and offshore seas are well known for high fishing productivity. Fisheries sector had a significant contribution to regional economy, thus the development of fisheries become important for local government policy to increase fishermen welfare. However, it was indicated that the Bengkalis fishing production showed a decreasing trend which suggested an overfishing status. The present research aimed to analyze the fisheries resources state in Bengkalis Regency, and performed a Shift Share (SS) Analysis as well as Location Quotient (LQ) Analysis, to determine the trend of fisheries sector to Bengkalis economy. Furthermore, Bioeconomic Analysis and Institutional Analysis were also carried out to describe the institutional aspect. Apparently, Parang-parang (Chirocentrus dorab) have been over exploited. Bioeconomic analysis revealed that exploitation rate of Parang-parang reached 263%. Natural growth level of Parang-parang was calculated of 1,142, capture capacity coefficient was 0,0000002721 and carrying capacity coefficient was 168.882,96. Bioeconomic analysis result of Kurau (Eleutheronema tetradactylum) was overfishing 33,42%. Natural growth level of Kurau was 0,614, capture capacity coefficient was 0,00000020 and carrying capacity coefficient was 28.820. Fisheries management policy of this economic resources had better used MEY regime. Based on LQ and SS analysis, it appeared that fisheries sector had high effects to regional economic so that fisheries development provide significantly contribution to public welfare opportunity. The degradation of marine ecosystem and high exploitation (overfishing) become a serious problem. The role of social culture (local wisdom) should be revitalized. Stakeholders involved in fisheries development policy were fiseheries office, Bengkalis Parliament, Forestry Departement and Bengkalis Environmental Agency.
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    PEMANTAATAN EKSTRAK DAUN MANGROVE Rizhopora sp. UNTUK PENGOBATAN PENYAKIT Motil Aeromonas Septiecmia
    (2017-11) Syawal, Henni; Karnila, Rahman; Tang, Usman M
    Penelitian ini bertujuan memanfaatkan ekstrak d2un mangrove Rhhopora sp. untuk mengobati ikatr air tawar (patin jambal siam) yatrg terfufeksi Aeromonas lrydrophila. Pembuaan ekstrak dlaun mangrove Nzhopora sp. menggunakan pelarut e@rc|%o/o dengan pe6andingian 1:5. Ikan uji {Pangasius hyphopthalmas.) terlebih dahulu diinfeksi dengan bakteri Aeromonas lrydrophila, dosis 0,lml/ekor, kepadatan bakteri l08cfulml. Setelah 18 jqm pascainfeksi dilakukan pengobatan sebanyak dua kali selama dua hari, dengan cara perendaqan 5 menit dalam larutan ekstrak daun mangrove Rizhopora sp. Perlakuan dosis pengobatan adalah; 1300, 1600, dan 1900 ppm, dan kontrol positif (tanpa diobati). Hasil penelitian menunjukkaa bahwa pengobatan dengan ekstrak Rizhopora sp. dosis l600ppm mampu mengobati ikan jambal siam yang terinfeksi A. hydrophilc dilihat dari gambaran darah dan kelulusanhidup ikan di akhir penelitian. Nilai rata-rata total eritrosit 346.00*22.60 x l0aseUnm3, Kadar hemoglobin 9.30+0.469ldL, Nilai hematokrit 30.67+l .53Vo, dan persentase kelulusanhidup 84,6yo-
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    Rearing Of River Catfish Seed (Mystus nemurus C.V) in Aquaponic Resirculation System with the Addition of EM4
    (2016-03-29) Mulyadi; Tang, Usman M; Pamukas, Niken Ayu; Tambunan, Erni Parulian
    This research was conducted from March to April 2013, for 45 days in Breeding Laboratory Unit of Fisheries Faculty and Marine Sciences, University of Riau. The aim of the Research was to investigate the effect of EM4 inoculant and the use mustard plant as biofilter, on growth and survival rate of river catfish seed (Mystus nemurus). The Method used was experiment with 4 treatments and 3 replications. The treatments were A = Water without the inoculant EM4 (as control), B = 250 ml inoculant EM4, C = 300 ml inoculant EM4, D = 350 ml inoculant EM4. The best result was treatment C (300 mL inoculant EM4) with absolute growth weights (11,83 g), absolute growth length (6.01 cm), daily growth rates (2.77) and survival rates 93,06 %. Water quality recorded during in the research period with ammonia (NH3) 0,02-0,09 mg/L, nitrite (NO2) 0,73-4,10 mg/L, nitrate (NO3) 0,63-2,73 mg/L, temperature 30-310 C, pH 6-7, dissolved oxygen (DO) 3-4,5 mg/L
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    STRATEGI PENGELOLAAN DANAU BANDAR KAYANGAN KECAMATAN RUMBAI PESISIR KOTA PEKANBARU SECARA BERKELANJUTAN
    (2019-11) Nurmayani, Nurmayani; Tang, Usman M; Siagian, Madju; Putra, Ridwan Manda
    This research was conducted in 2019, in the waters of Lake Bandar Kayangan Samar Valley subdistrict Rumbai Pesisir city of Pekanbaru Riau Province. This study aims to analyze the extent of the tolerance of the quality of Lake Kayangan waters to fish farming (KJA) compared to the Standard Quality of PP No.82 of 2001 and analyze people activities around Bandar Kayangan Lake which led to the polluted waters as a result of daily activities. The method used is an experimental method by observing and measuring sample directly on rearing cages measure 1x1x1 m. Patin fries were stocked at the age of two weeks with the number ( 50 fries ) and 3 months time of rearing. Three units of cages were placed at each station that has been determined and Rumbai Freshwater Cultured Installation pond as control. Data were analyzed descriptively and statistically, the descriptive analysis performed on physical and chemical parameters of water based on PP No. 82 year 2001 and was associated with the growth and survival of Patin fry. Statistical analysis is using Analysis of Variance ( ANOVA ) and completely randomized design ( CRD ) with treatment of 3 times repetition. Growth and survival of Patin fry on each station were quite well where the average growth of absolute weight between 35.43-36.20 grams, the average growth rate of daily weight between 5.602-5.782%, the average of absolute growth inlength between13,61-14.10 cm, the average of daily growth in length between 2.285 - 2.321% and the survival rate between56-79%. The waters of Lake Bandar Kayangan is a waters that are so important for the life of people around Lake Bandar Kayangan especially for fish farming in Keramba Floating Net (KJA). The fish are nila fish, mas and gurami. From the results of interviews of researchers to the community around Lake Bandar Kayangan only certain types of fish are able to survive, this is due to the quality of water at Lake Bandar Kayangan can not be tolerated by other fish. But when the researchers tested the catfish seeds, the catfish still survive.