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Tajuddin Siregar
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AKTIVITAS ANTIMIKROBA EKSTRAK KULIT BUAH MANGGIS (Garcinia mangostana) TERHADAP BAKTERI Aeromonas hydrophila, Edwardsiella tarda DAN JAMUR Saprolegnia sp. Madiah Handayani; Dwi Suryanto; Tajuddin Siregar; Zulhan Efendi
AQUACOASTMARINE Vol 3, No 3 (2015): JURNAL AQUACOASTMARINE VOLUME 3, NO 3, JUNI 2015
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

This study was aimed to know antimicrobial potential of extract of mangosteen rind(Garcinia mangostana) against bacteria Aeromonas hydrophila, Edwardsiella tarda andfungus Saprolegnia sp. and to know the extract toxicity to brine shrimp (Artemia salinaLeach.). Mangosteen rind was extracted using methanol, ethyl acetate and n-hexane.Antimicrobial activity test was done using the agar diffusion method. To know thecompounds contained in the extract phytochemical test was conducted. The chemicalcompound test showed that extract of mangosteen rind contains phenolic/tannin/flavonoid,terpen/steroid dan alkaloid. The extracts inhibitated the growth of Aeromonas hydrophila,Edwardsiella tarda and Saprolegnia sp. to some extent. The optimal antimicrobial activitywas obtained from ethyl acetate. The extract showed cytotoxic activity with LC50<1000μg/ml.Keywords : Antimicrobial activity, Aeromonas hydrophila, Edwardsiella tarda, Garciniamangostana, Saprolegnia sp.
LAJU DEKOMPOSISI SERASAH DAUN Rhizophora mucronata DAN KONTRIBUSINYA TERHADAP NUTRISI DI PERAIRAN PANTAI SERAMBI DELI KECAMATAN PANTAI LABU Albino Panjaitan; Yunasfi Djayus; Tajuddin Siregar
AQUACOASTMARINE Vol 3, No 5 (2015): JURNAL AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The mangrove litter which has been decomposed contributes organicmatter as food source for many species of fish and other organisms in themangrove ecosystem. The purpose of this research is to know the decompositionrate of R. mucronata litter leaf and to know the nutrient content of carbon (C),nitrogen (N) and phosphorus (P) in the R. mucronata litter leaf which beenreleased during the decomposition time. This research was done at Serambi DeliBeach Deli Serdang Regency, North Sumatra Province during July untilNovember 2014. This research used purposive sampling method at three stationsand the determination of the station is done by seeing the availability of R.mucronata at the Serambi Deli Beach. The results showed that the decompositionrate of R. mucronata litter leaf on day 105 are 6,41 in stasiun I, 3,56 in station IIand 5,35 in station III. The fastest decomposition rate is the station I with 6,41and the slowest decomposition rate is the station II with 3,56. The nutrient ofcarbon during decomposition in 105 days are 23,48% at station I, 21,96% atstation II and 28,4% at station III. Nutrient of nitrogen which been decomposedon day 105 are 0,42% in station I, 0,7% in station II and 0,54% in station III.Nutrient of phosphorus during decomposition in 105 days are 0,20% in station I,0,22% in station II and 0,23% in station III.Keywords : Serambi Deli Beach, Decomposition, Rhizophora mucronata
KAJIAN UNIT PENANGKAPAN JARING KEMBUNG (GILLNET) DI TPI PANTAI LABU KABUPATEN DELI SERDANG The Study Units of Bloating Net (gillnet) in the Pumpkin TPI Deli Serdang Regency Mas Bintang; Pindi Patana; Tajuddin Siregar
AQUACOASTMARINE Vol 4, No 2 (2016): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Gillnet is a fishing gear for pelagic fishes as the fishing target. The research aimed to review unit bloating and analyze the composition, diversity, dominance, size and analysis of the economy. This research was conducted in Pumpkin TPI Deli Serdang Regency from August until December 2015. Result of the research found 3 species of fish those were Rastrellinger kanagurta as the mayor catch is 816.2 kg while the minor catches is Scomberomorus commerson as 65.1 kg and Selaroides leptolepis as 37.8 kg. During research, the value of diversity index both appliance catch have low between 0.182-0.355 while the value of dominance index high between 0.832-0.920. It indicate that selectivity both appliance catch’s high. The rate value at the appliance catch gillnet as the target catch is aqual to 40.81 kg/trip, higher from the sideline catch that is aqual to 5.145 kg/trip. Gillnet catch the fish with an average 58.44% competent minimum size. The effort analysis to value the Revenue-Cost Ratio (R/C) of 1.2 which means that the effort is worth doing and worth Payback Period (PP) of 0.8 years.Keywords: Gillnet, Composition of catches, The target catch, The sideline catch, Effort analysis
ANALISIS POTENSI EKOWISATA DANAU TOBA DI PANTAI PARIS KABUPATEN SIMALUNGUN SUMATERA UTARA (Analysis Potential Ecotourism Toba Lake in Paris Beach, Simalungun district, North Sumatera) Putri Y R Simanjuntak; Pindi Patana; Tajuddin Siregar
AQUACOASTMARINE Vol 5, No 2 (2017): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Toba Lake is one of tourism destination aim in North Sumatera Province. The research to know carrying capacity region Paris Beach tourism, conformity of environment as tourism and tourists perception to Paris Beach potention as one of tourism destination and alternative strategy for development tourism region. This research has been carried out in the Paris Beach Village of Tigaras, District of Dolok Pardamean, Regency of Simalungun on February 2017 by analyzing parameter of water quality as such water themperature, water brightness, current speed, pH, DO, BOD, and Total Coliform. The results are showed all parameters meet the water quality standards on PP No. 82 Tahun 2001. Paris Beach is classified very approviate as tourism region with tourism index 83. 33%. The alternative strategy to develope the tourisme is y conducting a good promotion to expose resources and potention of Paris Beach, region government and central government realization gevern plan of Danau Toba Toursm.Key word : corresponding tourism index, carrying capacity region, SWOT
KEPADATAN EPIFAUNA DI LINGKUNGAN MANGROVE DESA LUBUK KERTANG KECAMATAN BRANDAN BARAT KABUPATEN LANGKAT PROVINSI SUMATERA UTARA Buana Sukri Tanjung; Yunasfi Djayus; Tajuddin Siregar
AQUACOASTMARINE Vol 6, No 1 (2018): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The mangrove ecosystem is a system in nature where life that reflects the mutual relationship between living creatures and their environment, affected by the tides of sea water and is dominated by species of trees or shrubs that are distinctive and able to grow in salty / brackish waters. This research was conducted by using Purposive Sampling method to know Epifauna Density in Environment Mangrove Lubuk Kertang Village. The results of this study indicate that the highest density of Cerithidea alata species (9500 ind / ha) because this species is native to mangrove forest and as a predator. Temperature ranges from 27-32 oC. Based on the Morisita Index the dispersion pattern by clumping.Keywords: Mangrove Ecosystem, Density, Epifauna
KAJIAN UNIT PENANGKAPAN RAWAI DI PPI SIALANG BUAH KECAMATAN TELUK MENGKUDU KABUPATEN SERDANG BEDAGAI SUMATERA UTARA Riki Ardiansyah Nasution; Pindi Patana; Tajuddin Siregar
AQUACOASTMARINE Vol 6, No 2 (2018): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Rawai is a fishing gear with the target of demersal fishes. The purpose of this research is to know the operation of longline fishery unit in terms of the construction of fishing gear, the operation and the composition of the catch and to know the productivity of fishing gear and to analyze the feasibility of longline business used by Sialang Buah fishermen. This research was conducted in PPI Sialang Buah Teluk Mengkudu Subdistrict of Serdang Bedagai District of North Sumatera for one month that is in October 2017. The research results obtained some types of fish, among others: Pari (Gymnura japonica), White Kakap (Lates Calcalifer), Grouper Epinephulus sp), Manyung fish (Netuma thalassina), Gerpu fish, Jenahar fish, Aluh fish - aluh, Red Snapper (Lutjanus malabricus), Pepeh fish. The value of the catch rate in the longline fishing gear is 277.2 kg. Business analysis for Revenue-Cost Ratio (R / C) of 1.25 which means fishing business is feasible to continue and Payback Period (PP) value is 1.4 years.Keywords: Sialang Buah, longline fishing gear, catch composition, business analysis.
Co-Authors Albino Panjaitan Buana Sukri Tanjung DWI SURYANTO Madiah Handayani Mas Bintang Pindi Patana Putri Y R Simanjuntak Riki Ardiansyah Nasution Yunasfi Djayus Zulhan Efendi