Yunasfi Djayus
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Journal : Aquacoastmarine

DAMPAK PENGERUKAN PASIR TERHADAP KELIMPAHAN PLANKTON DAN KUALITAS AIR DI HULU DAERAH ALIRAN SUNGAI BELAWAN, KECAMATAN PANCUR BATU, KABUPATEN DELI SERDANG Sagala, Christina; Nasution, Zulkifli; Djayus, Yunasfi
AQUACOASTMARINE Vol 1, No 1 (2013): JURNAL AQUACOASTMARINE VOLUME 1, NO 1, DESEMBER 2013
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Watershed is the area bounded ridge where the rain water that falls on the area will be accommodated by the ridge and will be streamed through small streams to the main river. The presence of sand dredging activities in upstream watersheds Belawan can be lower water quality and abundance of micro-organisms, including plankton. This research had been conducted from April to July 2013 in Belawan Watershed Headwaters. This research used Purpossive Random Sampling methods. There were 2 stations, Station 1: Pertampilen village, District Pancur Batu as an active area of sand dredging activities, Station 2: Salam Tani village, District Pancur Batu as areas which were far away from the sand dredging activities. Sampling activities were conducted 4 times once/month. The research aimed to knew water quality and determined the abundance of plankton in Belawan Watershed Headwaters.The results showed that at the station I, there were found 19 genera of phytoplankton and 1 genera of zooplankton and at the station II, there were only found 17 genera of phytoplankton. Plankton abundance at the station I was 85, 404 ind/l and at station II was 128,684 ind/l. Water quality at the station I had passed the thresholds as water quality raw materials, such as ammonia and nitrite. Turbidity also have very high at station I. This research showed that the sand dredging activity affected the abudance of plankton in the river.Keywords: Water Quality, Sand Dredging, Plankton, River
STUDI ASPEK REPRODUKSI IKAN BAUNG (Mystus nemurus Cuvier Valenciennes) DI SUNGAI BINGAI KOTA BINJAI PROVINSI SUMATERA UTARA Manurung, Vindy Rilani; Djayus, Yunasfi; Desrita, Desrita
AQUACOASTMARINE Vol 1, No 1 (2013): JURNAL AQUACOASTMARINE VOLUME 1, NO 1, DESEMBER 2013
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Baung fish (Mystus nemurus CV) is a fish of high economic value. Thepurpose of research to reproductive aspects (sex ratio, gonad maturity level (TKG),gonad maturity index (IKG), first time size mature gonad, fecundity and eggdiameter). The study was conducted from March to May 2013 at three locations . Themethod used descriptive analytic .Sex ratio of Baung fish with unbalanced sex ratio with a value of 4.5>3.8.Gonad maturity level (TKG) found I- IV, while the male fish only I- III. gonadmaturity index (IKG) female fish 0.01-7.33% and 0.01-0.26% for male fish . The firstgonad size mature female fish is 268 mm . Fecundity of Baung fish is 18229-44 392eggs . Distribution diameter on the distribution of fish eggs female 0.38 to 2.05 mm.Keyword : Baung fish, Bingai river, Fish reproduction, Mystus nemurus CV.
Struktur Komunitas Ikan di Sungai Naborsahan Danau Toba Sumatera Utara Tarigan, Putri Ananda; Djayus, Yunasfi; Suryanti, Ani
AQUACOASTMARINE Vol 1, No 1 (2013): JURNAL AQUACOASTMARINE VOLUME 1, NO 1, DESEMBER 2013
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

This research was conducted in Naborsahan River, North Sumatera in April-June 2013. It was aimed to know water quality in Naborsahan River, fish community structure and the relationship between community structure and physical and chemical factors of water. A survey method was conducted using Purpose Random Sampling in 4 stations. The obtained data were principal component Analysis (PCA) and analyzed descriptively.This research obtained 8 families, 9 genus, 10 species and 10745 individual fish. Highest relative abundance was fish species Bilih of 98.83%, while the lowest was goldfish and Sword Platy fish is 0.016%. Diversity index, fish uniformity index obtained,dominance index and index of similarity ranged from 0.08–0.73, 0.04-0.53, 0.59 - 0.98 and 50% - 89%, respectively. Temperature, current velocity, depth, brightness, pH, dissolved oxygen, biochemical oxygen demand, phosphate, nitrite, nitrate and turbidity varied between 22-25oC, 0.24-0.44 m/s, 0.62-0.79, 0.45-0.76, 6.75-7.9, 7.1-10.9 mg/l, 2.22-8.06 mg/l, 0.003-0.005 mg/l, 0.424-0.584 mg/l, 0.039-0.059 mg/l and 4.207-16.617 NTU, respectively. The results of PCA showed that temperature, depth, brightness, pH, DO and BOD5 are highly correlated with community structure. While flow, turbidity, nitrate, nitrite and phosphate are the lowest correlating factor of community structure.Keywords: Diversity, Fish, Water Quality, Naborsahan.
Kondisi Kualitas Air Danau Toba di Kecamatan Haranggaol Horison Kabupaten Simalungun Sumatera Utara Haro, Debi Debora; Djayus, Yunasfi; Harahap, Zulham Apandy
AQUACOASTMARINE Vol 1, No 1 (2013): JURNAL AQUACOASTMARINE VOLUME 1, NO 1, DESEMBER 2013
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Aquaculture of floating net cages system at Lake Toba in particularHaranggaol developed rapidly, As uncontrolled development unit ofculture can cause water quality decreased in Haranggaol, Toba Lake sothat it can pass through water quality standard. This research aim to knowthe level of water pollution in Lake Toba Haranggaol using the STORETand Index Pollution Method then compare it without floating net cages.This research was done in May- July 2013. Sampling method used methodof purposive random sampling. Station was used for research was Station 1at environment of floating net cages and Station 2 at without floating netcages area. Result shown water temperature: 26-28 0C, brightness: 2,8-5,35meter, turbidity: 0,16-7.13 NTU, TSS: 12.36-19.36 mg/l, pH: 7,1-8,3, DO:4,3–6,3 mg/l, BOD: 0,4-1,7 mg/l, COD: 4,42-6,63 mg/l, NH3: 0,115-0,293mg/l, NO3: 0,306-0,814 mg/l, NO2: 0,001-0,015 mg/l, PO4: 0,038-0,188mg/land Colifecal: 8,6–22,2 MPN/100 ml. Based on the results of research therewere some parameters that have passed water quality standard atenvironment of floating net cages was 0,217 mg/l of NH3, 0,578 mg/l of NO3and 0,134 mg/l of PO4, while at without floating net cages area was 0,144mg/l of NH3, 0,401 mg/l of NO3 and 0,056 mg/l of PO4. Based on Storetmethod, both research station categorized into the class C that was middlepolluted. While according to Pollution Index method both research stationcategorized light polluted to middle polluted.`Key words: Colifecal, Floating Net Cages, Water Quality
PENGARUH FREKUENSI PEMBERIAN PAKAN PADA KONDISI GELAP TERHADAP PERTUMBUHAN DAN SINTASAN BENIH IKAN LELE DUMBO (Clarias gariepinus) Alnanda, Reza; Djayus, Yunasfi; Ezraneti, Riri
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The African catfish (Clarias gariepinus) is nocturnal, that is active at night or more like to dark place. The fry of catfish also requires high feeding frequency because the stomach is still small as a straight tube. This research was conducted to observe the effect of feeding frequency in dark condition to growth rate, survival rate and feeding efficiency of African catfish fry (C. gariepinus). The research was held on hatchery UPT Budidaya Dinas Pertanian dan Kelautan Kota Medan. Fry of catfish (C. gariepinus) were used average body size 8 - 9 cm and body weight 5 - 8 g, total fry cath fish 120 fish with stocking density 10 fish/washbasin. Twelve washbasin (50 liter volume) were used with aeration system and covered with black HD plastic layer to make dark condition for 24 hours. The parameter observed was 28 day were : growth rate, survival rate, feeding efficiency and water quality. Experimental design used a completely randomized design (CRD) with 4 treatment and 3 replications and further test use Least Significant Difference (LSD). The treatment was feeding frequency at 3 (at 08.00, 16.00 and 24.00), 4 meals (at 08.00, 14.00, 20.00 and 02.00), 5 meals (at 08.00, 12.48, 17.36, 22.24 and 03.12) and 6 meals (at 08.00, 12.00, 16.00, 20.00, 24.00 and 04.00) times a day in dark condition. The results indicated that the feeding frequency significantly effect to the growth rate and feeding efficiency, but did not significantly effect to survival rate. Feeding frequency 6 times a day is the best daily growth rate and feeding efficiency at 4,90% and 94,90%. Feeding frequency 3 times a day the old daily growth rate and feeding efficiency at 2,44%. and 44,03%.Keywords : Clarias gariepinus, feeding frequency, dark condition, growth.
Bivalvia di Perairan Pantai Cermin, Kabupaten Serdang Bedagai Hardianti, Nanda Mutia; Djayus, Yunasfi; Desrita, Desrita
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The Cermin Beach has a higher natural value such as biodiversity, one of them is bivalve. The objective this research is to study the community structure of bivalve and waters condition in Pantai Cermin of Serdang Bedagai Regency. This research was conducted since June - August 2013 using transec method at 3 station and 4 time interval of sampling. The observed physical and chemical parameter are temperature, salinity, pH, DO, TSS, and type of basic substrate.Bivalve are found in Cermin Beach of Serdang Bedagai Regency consists 15 species, i.e. The species with most value on each station is Donax cuneatus with the abudance in station I that is 150 ind/m2, the abudance in station II that is 331 ind/m2 and abudance in station III is 247 ind/m2. The species diversity index of bivalve range from 0,85 – 1,22, uniformity index of bivalve range from 0,18 – 0,30, domination index of bivalve range from 0,35 – 0,57 and pollution index range from 1,23 – 1,61 is lightly polluted.Keywords: Bivalvia,Cermin Beach, Community Structure
JENIS-JENIS BAKTERI PADA LUKA IKAN PATIN (Pangasius djambal) Lubis, Yudha Perdana Putra; Djayus, Yunasfi; Leidonald, Rusdi
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

One of the various forms of business which produces fish optimally and do not damage fish populations and environment is a good freshwater fish farming. Currently catfish become one of the leading commodity in the fishery. Bacterial diseases arising from injury affecting the outcome of catfish farming. This research had been conducted on September – October 2013. It purpose was to determine the type of bacterias that commonly found in catfish (Pangasius djambal) wound. Sampling was done one time to collect 10 fishes. Samples were fishes which showed of clinical symptoms such as wound, skin discoloration, defect on the fins, tail and antennae, slow-moving, swim on the surface, tend to be solitary (not clustered ) and also fish without no clinical symptoms. Bacteria only found in injury catfish they are Aeromonas hydrophilla, Pseudomonas aeruginosa, Pseudomonas pseudomallei and Morganella morganii.Keywords: Catfish (Pangasius djambal), Fish disease, Types of Bacterias, Wound.
UJI DAYA HAMBAT EKSTRAK KULIT BATANG Rhizophora mucronata TERHADAP PERTUMBUHAN BAKTERI Aeromonas hydrophila, Streptococcus agalactiae DAN JAMUR Saprolegnia sp. SECARA IN VITRO Pradana, Dedi; Suryanto, Dwi; Djayus, Yunasfi
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

This study was aimed to determine antimicrobial potential of stem bark extract of Rhizophora mucronata against bacterial pathogens i.e. Aeromonas hydrophila, Streptococcus agalactiae and fungus Saprolegnia sp. and to determine the extract toxicity to Artemia Salina Leach. Extraction was done by a single maceration using methanol, ethyl acetate and n-hexane. Phytochemical test was conducted to all extracts. Toxicity test was conducted using Brine Shrimp Lethality Test. Antimicrobial activity test was done using the agar diffusion method. Phytochemical test of stem bark extract of Rhizophora mucronata showed that the extract contained of alkaloid, tannin, steroid/terpenoid and saponin. All of the extact of Rhizophora mucronata were toxic to A. salina. The result showed that ethyl acetate extract was the most toxic. Antimicrobial test results showed that ethyl acetate extract of stem bark of R. mucronata was broad antimicrobial spectrum because it was able to inhibit the growth of all microbes.Keywords: Antimicrobial activity, Aeromonas hydrophila, Rhizophora mucronata, Streptococcus agalactiae, Saprolegnia sp.
Pengaruh Hutan Mangrove Terhadap Produksi Udang Windu (Penaeus monodon) Pada Tambak Silvofishery di Desa Tanjung Ibus Kecamatan Secanggang Kabupaten Langkat SYAM, ZAINURI; Djayus, Yunasfi; DALIMUNTHE, MARAGUNUNG
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The purpose of this research was to determine the effect of mangrove forests with different densities to the production of tiger shrimp and the factor effect were production of tiger shrimp in silvofishery pond. This study conducted in silvofishery pond in Tanjung Ibus village, Sub-district Secanggang, District of Langkat on Mei untilt October 2013, by using 2 research stations. Pond 1 was a pond with high density, and pond 2 was a pond with low density. Mangrove vegetation analysis has been done by measuring the density of seedlings, saplings and tree in each research station. Water quality and plankton sampling performed at each pond in 2 station at the inlet and the center of the pond. Sampling has been done 4 times, when the fry will bes tocked, two-month preservation period, four-month preservation period and five-month preservation period. tiger shrimp production data obtained from direct observations during the harvesting process. Mangrove density in ponds 1 for seedlings was 202 ind/ha, saplings 111 ind/ha, and tree level 958 ind/ha. Mangrove density in ponds 2 for seedlings was 56 ind/ha, saplings 272 ind/ha, and tree level 47 ind/ha. The water quality in pond 1 in general of the criteria for the aquaculture tiger shrimp be based on The Decision Minister of Marine and Fisheries No : 28 in 2004. Abundance of plankton in the pond 2 was higher than the pond 1. Tiger shrimp production in pond 1 was 42 kg, and in pond 2 was 29 kg.Keyword : Mangrove, Plankton, Silvofishery, Tiger shrimp, Water quality.
KEANEKARAGAMAN DAN KELIMPAHAN PERIFITON DI PERAIRAN SUNGAI DELI SUMATERA UTARA Barus, Susanti Lawati; Djayus, Yunasfi; Suryanti, Ani
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

This research aims to know the abundance and diversity level of periphyton and to determine the pollution Deli river, in terms of periphyton diversity and water quality. Physical-chemical, and biological observed parameter that were temperature, current, brightness, pH, TDS, TSS, BOD5, DO, nitrate, Phosphate, Fe, diversity and abundance of periphyton. Sampling was done three times at the five observation station, that each station is divided into three spots (before, during and after the sewage outlet). Diversity index periphyton (H) ranged from 0,803 until 1,195 ind/cm2, abundance ranged from 257.280 until 1.185.280 ind/cm2. The temperature 27 until 30oC, the current range 0,68 until 0,89 m/s, the brightness range 20,50 until 23,50 cm, TDS range 96,50 until 142,03 mg/l TSS 5,33 until 11,33 mg/l, pH range 7,60 until 8,10 mg/l, DO 0,90 until 1,90 mg/l, BOD5 8,99 until 22,50 mg/l, nitrate 1,69 until 3,48 mg/l, Phosphate 0,11 until 0,35 mg/l and Fe 0,20 until 3,78 mg/l. According to the Diversity index (H) and water physical – chemical properties, Deli River is being heavy polluted.Keywords: Periphyton, Diversity, Abundance, Deli River
Co-Authors Ahmad Muhtadi Ahmad Muhtadi Rangkuti Ahmad Rizki, Ahmad Albino Panjaitan, Albino Ani Suryanti Atikah Asry Aznia Marlina Sima Christina Sagala Danra Siallagan Debi Debora Haro Dedi Pradana Desita Sari Br Ginting Desrita Desrita Desy Ariska, Desy Dewi, Rita Rosmala Dinarta Hutabarat, Dinarta Dwi Suryanto Endaiyana Libertyta Ester Nelya Tindaon Fadhilah, Amanatul Fahmi Fadhli Rais, Fahmi Fadhli Febrina Arli, Febrina Green Alfath Siregar Hafiz Muhammad Henny Christien Huria Marnis Indra Lesmana Josephin Saut Sintong Panjaitan, Josephin Saut Sintong Lubis, Risda Farida M.Bobbie Jhora Waker, M.Bobbie Jhora Manik, Maryenta MARAGUNUNG DALIMUNTHE Meia Ester Sela Ginting, Meia Ester Sela Muhammad Ma’rufi, Muhammad Muhammad Riza Kurnia Lubis, Muhammad Riza Kurnia muhammad rizky, muhammad Munthe, Keumala Hafni Nanda Mutia Hardianti Nurmatias Nurmatias Nurul Azmi, Nurul Ofi Sabrina Sitompul Pesta Saulina Sitohang Prasetia Ajitama Putri Ananda Tarigan Putri, Dizza Ayu Rahmad Ritonga Raissha Amanda Siregar Ramadhani, Dinda Ayu Rangga Warsito, Rangga Rebeka Paimaibot S, Rebeka Paimaibot Reza Alnanda Rika Wirani Riri Ezraneti Romi Pindonta Tarigan Rusdi Leidonald Sabilah Fi Ramadhani Sarah Diba Sandy, Sarah Diba Shavira, Elza Siagian, Suci Pratiwi Fahrina Sihombing, Ema Theresia Silalahi, Daniel Abas Herman Simatupang, Horas M. C. Sultan Akbar Habibullah, Sultan Akbar Suria Masriani Sinaga, Suria Masriani Susanti Lawati Barus Syammaun Usman Tajuddin Siregar, Tajuddin Vindy Rilani Manurung Yudha Perdana Putra Lubis ZAINURI SYAM Zefri Ade Gurukinayan, Zefri Ade Zulham Apandy Harahap Zulkifli Nasution