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PENGENDALIAN SAPROLEGNIA SP. PADA IKAN NILA (OREOCHROMIS NILOTICUS) DENGAN SALINITAS AIR YANG BERBEDA Kurniawan, Dayu; Suryanto, Dwi; Ezraneti, Riri
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

DAYU KURNIAWAN. Control of Saprolegnia sp. in Tilapia (Oreochromis niloticus) withDifferent Water Salinity. Under academic supervision By SURYANTO DWI and RIRIEZRANETI.Water quality in fish culture is one of the most important factor that have to bemaintained. Unproper maintained of water quality may result on increase of diseaseprevalence to the fish. One of the disease affected tilapia culture is saprolegniasis caused bySaprolegnia sp.. This study aimed to determine the growth of the fungus Saprolegnia sp. in tilapia(Oreochromis niloticus) in different water salinity as well as to determine the optimum salinity levelsto inhibit the Saprolegnia sp. growth. The growth rate, feed efficiency, survival, fungal colonies,temperature, pH, and DO was measured. The study was conducted with 3 replications and 4treatments, ie 0 ppt, 5 ppt, 10 ppt, and 15 ppt.. The result showed that growth rate were from 0,7 ?2,9%, feed efficiency ranged from 30,99 ? 61,05%, the survival rate ranged from 6,67 ? 90 %and fungal colonies decreased to range between 2,33 ? 8,67. Temperatures ranged from 24,9? 26,1°C, pH ranged from 8,3 ? 9,0, DO ranged from 6,5 ? 7,0 mg/l. Optimum salinity todecrease Saprolegnia sp. in 15 ppt.Keywords: tilapia fish, Saprolegnia sp., Saprolegniasis, Salinity
KEANEKARAGAMAN MAKROZOOBENTOS DI DANAU TOBA DESA HARANGGAOL KECAMATAN HARANGGAOL HORISAN KABUPATEN SIMALUNGUN Sitanggang, Ariance Nurdaya; Sitorus, Hasan; 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 aims of study were to determine the diversity of macrozoobenthos and to analize the relationship of water quality parameters (temperature, pH, DO, BOD5) to diversity index of macrozoobenthos in Lake Toba , Village Haranggaol, Haranggaol Horisan Subdistrict, Simalungun District. Observations had been carried out three times in three locations, and each location sampling was conducted three replications. Regression analysis was used to determine the correlation of water quality parameters to diversity index of macrozoobenthos. Based on the research obtained that macrozoobenthos diversity index ranged from 1.53 to 1.90, uniformity index ranged from 0.82 to 0.95, the population density ranges from 332 to 645 ind/m2 and relative density ranged from 99.95 to 99.98 %. Regression analysis showed that the correlation coefficient (R) of 0.710 indicates that the relationship between water quality against the relatively strong macrozoobenthos diversity index and the coefficient of determination (R2) obtained at 0.505.Keywords: Diversity, Lake Toba, Macrozoobenthos.
PETA SEBARAN SALINITAS PADA SUMUR BOR DI DESA PERCUT KECAMATAN PERCUT SEI TUAN KABUPATEN DELI SERDANG Dongoran, Deliana; Afifuddin, Yunus; 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 rapid development of technology, followed by the development of the residents,this resulted in the siphoning of water by society include on wellbore massively which resulted in the decrease of fresh water surface elevation with the result that be lower than the sea level. The purpose of this reseach was to analyze salinity value and typesof waterat each sample pointon Wellbore, thesalinity distribution maps, influence of the depth to well salinity, and looking for away of managing water resources in Percut village, Sub-district of Percut Sei Tuan District of Deli Serdang. This reseach used Arcgis 9,3 software to got salinity distribution map. The result showed that well sanility in every stasiun was different. Salinity average was 333 ? 2333 mg/l and in category of fresh water was 8,5%, brackish water was 23,6% and middle 67,9%. At depths of 20 ? 100 meters, water were included in very good category not found was discovered at a depth of>100 meters. It showed that water in percut village was not suitable as drinking water.Keywords : Map, Salinity, wellbore.
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.
EFEK AKTIVITAS MASYARAKAT TERHADAP KELIMPAHAN IKAN GARING (TOR TAMBRA) DI SUNGAI BATANG GADIS KABUPATEN MANDAILING NATAL SUMATERA UTARA Hidayati, Nisa; Djayus, Yunasfi; Ezraneti, Riri
AQUACOASTMARINE Vol 3, No 2 (2015): JURNAL AQUACOASTMARINE VOLUME 3, NO 2, APRIL 2015
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Garing fish is fresh water fish living the river stream.Beside fish living in the river where the water is not pollution. Garing fish so the fish species very speciality in Mandailing Natal region. Fish species Garing fish habitat in Batang Gadis river very influential the fisic and chemical water. Garing Fish is depent of temperature for overflowing of fish. Has been analyzed in March-April 2014 in Batang Gadis river. Sample Identification from four location with three examination. In order to determination sample location is using ?Purpossive Random Sampling? and sample analyzed water quality. The result of research in Batang Gadis river have been found one clas from ordo cypriniformes is for about 59 . The Highest population fishes density Garing fish with grade 0,0007 perm², meanwhile the lowest population fish density Garing fish is for about 0,0001 perm². Fish type with the highest presentation is Garing fish for about 50%, meanwhile the lowest is for about 16,6%. The overflowing fish with the highes presentation is Garing fish for about 18,5% and meawhile the lowest is for about 2,0%.Key word : The overflowing fish, Tor tambra, Batang Gadis
EFEKTIVITAS EKSTRAK DAUN MAHKOTA DEWA (PHALERIA MACROCARPA) SEBAGAI ANTIBAKTERI UNTUK MENCEGAH SERANGAN BAKTERI AEROMONAS HYDROPHILA PADA IKAN GURAMI (OSPHRONEMUS GOURAMY) Christien, Henny; Djayus, Yunasfi; Ezraneti, Riri
AQUACOASTMARINE Vol 2, No 2 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 2, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Disease prevention in fish using chemicals or antibiotics lead to microbial resistance. One of alternative to control the disease is to use plant extract. This study aimed to assess the antibacterial potential of mahkota dewa (Phaleria macrocarpa) leaf extract against disease causing bacteria Aeromonas hydrophila or Motil Aeromonas Septicemia (MAS) in fry of gouramy. The research method used was an experimental laboratory through ini vitro tests and 48-hour LC50 tests. The in vitro tests used 5 treatments and 2 replications, while the 48-hour LC50 for the test as many as five treatments and three replications. Treatment for in vitro test was a paper disc soaked in a solution of mahkota dewa leaf extract at a concentration of 250 ppm, 500 ppm, 600 ppm, 750 ppm, and the control (0 ppm), then placed on an agar medium that had been overgrown with Aeromonas hydrophila, and then incubated at 370C for 24 hours. Treatment of 48-hour LC50 test remedy, namely fry 4-6 cm sized gouramy marinated in mahkota dewa leaf extract solution at a concentration of 0%, 2%, 4%, 6%, and 8% for 48 hours. Data were analyzed descriptively. In vitro test results showed that mahkota dewa leaf extract at a concentration of 2% - 8% as an antibacterial potential of Aeromonas hydrophila with inhibition zone diameters ranging from 13,53 to 20,5 mm. The test results showed 48-hour LC50 of Gouramy fry mortality by 50% for gouramy fry is soaked in a solution of mahkota dewa leaf extract at a concentration of 600.536 ppm, based on EPA Probit analysis. The concentration of mahkota dewa leaf extract is safe for gouramy fry is 10% from the 48-hour LC50 value, that is 60.0536 ppm.Keywords : Aeromonas hydrophila, fry of Gouramy, mahkota dewa leaf
UJI TOKSISITAS AKUT LIMBAH CAIR INDUSTRI TAHU TERHADAP IKAN PATIN (PANGASIUS SP.) (ACUTE TOXICITY TEST OF TOFU INDUSTRIAL WASTEWATER FOR CATFISH (PANGASIUS SP.)) Sianturi, Parlinggoman; Mulya, Miswar Budi; Ezraneti, Riri
AQUACOASTMARINE Vol 2, No 2 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 2, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Tofu industry is an industry that has grown rapidly in the society. Most of the tofu industry drain directly wastewater into the water. Changes in chemical and physic parameters of water will disrupt the organism life in it, one of the types of organisms is catfish (Pangasius sp.). Toxicity tests are used to determine the status of tofu industrial wastewater for the mortality rate of catfish. Therefore, the required value of Lethal Concentration (LC50) 96 hours which is the concentration that causes 50% of test animals died within 96 hours of exposure time. This study aims to determine the LC50 value of tofu industrial wastewater for the catfish and the concentration effect of tofu industrial wastewater for the mortality rate of catfish. The study was conducted from February until March 2014. Research procedures include preliminary testing, toxicity testing, and probit analysis. Toxicity testing of tofu industrial wastewater for catfish mortality rate in treatment concentration 2.29% kill 36.67% of the fish, 2.63% kill 46.67% of the fish, 3.02% kill 50.00% of the fish, 3.47% kill 56.67% of the fish, and 3.98 % kill 63.33% of the fish. The investigations showed results that LC50 value for 96 hours of tofu industrial wastewater to the catfish (Pangasius sp.) is 28839.93 ppm (2.88%).Keywords : Catfish, LC50, Tofu Industry, Wastewater
KANDUNGAN LOGAM PB DI SUNGAI DELI PROVINSI SUMATERA UTARA (THE CONTENT OF PB METAL IN DELI RIVER, NORTH SUMATERA PROVINCE) Surbakti, Paulus; Patana, Pindi; Ezraneti, Riri
AQUACOASTMARINE Vol 2, No 2 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 2, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Water is a natural resources that supplies the needs of many peoples life, so it certainly to be protected for human and other living organisms. Industrialization and rapid population growth, had a negative impact on the quality and the existence of natural resources and the environment, such as pollution of heavy metal. This research aims to analyze the content of Pb in the middle and lower Deli watershed and to determine the Deli water quality based on water quality standards.This study was conducted on July until August 2013 at Deli watershed of North Sumatra province. The number of point observed station are 4 stations . The aquatic parameters measured were physic and chemistry, concentrations of heavy metals Pb and Cu in the water column using Atomic Absorption Spectrophotometry ( AAS ) .The results showed Pb concentrations ranged from 0.079- 0.408 mg/l. This result shows that heavy metal of Pb in Deli watershed has exceeded the quality standard.Keywords : heavy metals Pb
KUALITAS AIR SUNGAI BELAWAN DI DESA LALANG KABUPATEN DELI SERDANG PROVINSI SUMATERA UTARA (BELAWAN RIVER WATER QUALITY IN LALANG VILLAGE DELI SERDANG REGENCY OF NORTH SUMATERA) Roulia, Irma Shinta; Barus, Ternala Alexander; Ezraneti, Riri
AQUACOASTMARINE Vol 2, No 2 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 2, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Belawan River in Lalang Village is the river that contained domestic and market activity. The existence of dumping waste into rivers affecting water quality straight with the level of pollution generated. This study aims to determine the water quality of Belawan river in Lalang Village based on physic, chemical, and biology (makroozoobenthos) parameters. Physic and chemical parameters were analyzed by Storet method, while biological parameters (macrozoobenthos) were analyzed by Abudance and Biomass Comparison (ABC) curve. The study was conducted in January to February 2014. The method used Purposive Random Sampling. Stations are used Station 1 (control), station II (domestic activity), and station III (market activity). Physic and chemical parameters is temperature 26.33 ? 29.00 °C, turbidity (TSS) 8.79 ? 12.99 mg/L, DO 4.37 ? 6.57 mg/L, pH 5.17 ? 6.43, BOD 0.52 ? 0.64 mg/L, nitrate 0.65 ? 0.87 mg/L, phosphate 0.11 ? 0.13 mg/L, abudance and biomass of makroozoobenthos: 0 ? 88% and 0 ? 87%. Based on physical and chemical parameters of water, the station I had score 0 which indicates the water quality is satisfying the quality standard (class I), whereas station II and III had score -10 which indicates water quality is mild contaminated (class II). Biological parameter (makroozoobenthos) produce overlapping curves that show the quality water is medium at each station.Keywords : Belawan River, Lalang Village, Macrozoobenthos, Water Quality
AZOLLA MICROPHYLLA SEBAGAI BIOKONSENTRASI PENCEMARAN TIMBAL (PB) (AZOLLA MICROPHYLLA AS BIOCONCENTRATION OF LEAD (PB) POLLUTION) Ahmady, Guntur Althair; Patana, Pindi; Ezraneti, Riri
AQUACOASTMARINE Vol 3, No 1 (2015): JURNAL AQUACOASTMARINE VOLUME 3, NO 1, PEBRUARI 2015
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Lead (Pb) in water was found in dissolved and suspended form. Lead toxicity to plants was relatively lower compared to other trace elements. This study aimed to determine the influence of Azolla microphylla to absorb heavy metal at different concentrations of Pb, and Pb heavy metal for growth of Azolla microphylla biomass. This study was conducted from February to March 2014 in the Laboratory of Manajemen Sumberdaya Perairan Universitas Sumatera Utara.The ability of Azolla microphylla to absorb lead was measured by calculating Bioconcentration Factor. Results indicated that the BCF values on day H7 at 1 ppm of lead is 0.2372 and at 5 ppm is 0.3295. While on the H14 at 1 ppm concentration of lead is 0.2515 and at 5 ppm is 0.3536. Total weight of Azolla microphylla without lead contamination on day H7 is 105.6 grams, while the weight of Azolla microphylla with the addition 1 ppm of lead is 102.1 grams, and at 5 ppm is only 99.6 grams. While on the H14, the total weight of Azolla microphylla biomass without the addition of lead is 153.1 grams, 149.9 grams of lead at 1 ppm concentration, and 140.8 grams of lead at 5 ppm. Then in H28 measurements, weight Azolla microphylla biomass in the control treatment reached 209.7 grams, treatment with 1 ppm of lead reached 210.3 grams weight, and reached 198.5 grams at 5 ppm.Keywords : Azolla microphylla, Lead, BCF