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KOMUNITAS BIVALVIA DAN GASTROPODA DI PANTAI CERMIN SUMATERA UTARA Raissha Amanda Siregar; Yunasfi Djayus; Ani Suryanti
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

Mirror beach are located in the eastern coast of Sumatra has a variety of activities that affect the water quality, and can changes community of Bivalvia and Gastropoda. Information and understanding of environmental change is indispensable in ecosystem monitoring effort. This research aims to determine the status of the water quality, community of bivalves and gastropods in Cermin Beach,North Sumatera. This research had been conducted on June to July 2013 in Cermin Beach, Serdang Bedagai District, North Sumatera. There are three stations observed, station 1 : Tourism activities area; 2 : the mangroves area; 3 : estuary area. There are three sampling in 2 months. There are 11 genera from bivalves class and 12 genera from gastropods class. The highest total data in station 1 is 31.140 ind/m3, in station 2 is 15.714 ind/m3 and station 3 is 86.341 ind/m3. From the highest total data in three stations showed diversity criteria, the spread of the number of individuals and community stability classified as moderate. Eveneses index in three stations still moderate, eveneses values is 0,3 and 0,4. Dominance index value showed 0,23, 0,18, and 0,15 for three stations. It means, there is no type that dominate. Dispersion pattern showed clumped and uniform pattern.Keyword : Cermin Beach, Bivalves and Gastropods
Efektivitas Ekstrak Beberapa Tanaman Herbal terhadap Infeksi Ektoparasit pada Ikan Nila (Oreochromis niloticus) The effectiveness of Herbal Plant Extract to Infection of Ectoparasites on Tilapia (Oreochromis niloticus) Desita Sari Br Ginting; Yunasfi Djayus; Nurmatias Nurmatias
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

The main problem of Aquaculture is the diseases on the fish. Besides environmentally unfriendly, the using of chemicals as drugs against the diseasesalso producesthe new strain of the disease . The purpose ofthis study were to determine the effectiveness of using the extracts of garlic (Allium sativum), betel leafs (Piper betle), and papaya leafs (Carica papaya) against ectoparasites that infected thetilapia (Oreochromis niloticus) and to determine the immunity of some ectoparasites against each treatment. The methods used was experimental and observation by directly observing the occurrence or incidence of ectoparasites. Water quality parameters measured include temperature and degree of acidity ( pH ). The study was done for 45 days. Analisa Sidik Ragam used to determine the effect of each extract against ectoparasites on tilapia ( Oreochromis niloticus).The studyshowed that the papaya leaf (Carica papaya) has the best effectiveness in reducing the attack of ectoparasites on tilapia (Oreochromis niloticus) compared to garlic (Allium sativum) and betel leaf (Piper betle). The study also showed 12 kinds of ectoparasites that attacked the tilapia (Oreochromis niloticus). The highest incidence values found in the control, and then feed that mixed with garlic, then mixed with betel leafs and the lowest was the feed that mixed with papaya leafs.Keywords: Garlic, Betel Leafs, Papaya Leafs, Tilapia
ANALISIS KONVERSI HUTAN MANGROVE DI KECAMATAN GEBANG KABUPATEN LANGKAT (Conversion Analysis of Mangrove in District Gebang, Langkat) Rika Wirani; Yunasfi Djayus; Zulham Apandy Harahap
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

Mangrove is continuously under pressure due to various human activities. Lack of understanding about the importance of mangrove ecosystems and the increasing of life needs has sparked a mangrove conversion occurs. This research analyzed the conversion of mangrove in the district gebang, langkat from 2003 to 2012 using image of landsat ETM 7+ satellite of 2003 year and 2012 year and its impact to the economic situation of the fisherman. The landuse in district Gebang are ground, mangrove, rice field, pond, plantations, dryland, farming bush, residence, and water. The landuse of mangrove in the district Gebang decreased by 79,96% from 2003 to 2012. Extensive mangrove which have been converted into ponds is 276,96 ha, 1.520,46 ha of plantations, and 313,10 ha of farming bush. The catches of fisherman has decreased into 30,71% and fishing income decreased into 51,37%.Keywords : Land conversion, mangrove, landsat ETM 7+
EFEKTIVITAS EKSTRAK DAUN MAHKOTA DEWA (Phaleria macrocarpa) SEBAGAI ANTIBAKTERI UNTUK MENCEGAH SERANGAN BAKTERI Aeromonas hydrophila PADA IKAN GURAMI (Osphronemus gouramy) Henny Christien; Yunasfi Djayus; Riri Ezraneti
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
KEBIASAAN MAKAN IKAN BILIH (Mystacoleucus padangensis Bleeker) DI SUNGAI NABORSAHAN, KECAMATAN AJIBATA, KABUPATEN TOBA SAMOSIR, SUMATERA UTARA Hafiz Muhammad; Yunasfi Djayus; Ani Suryanti
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

The decline of fish populations bilih (Mystacoleucus padangensis Bleeker) caused by fishing activity and the availability of natural food in the River Naborsahan closely related to the physico-chemical factors of the river. The purpose of this study was to determine the feeding habits of fish bilih (Mystacoleucus padangensis Bleeker). This study was conducted in June - July with purposive random sampling method. The results showed that the natural food of bilih fish is phytoplankton from the genus Rhizosolenia, Synedra, Aulacoseira, Gonatozygon, Pinnularia, Closterium, Surirella, Gyrosigma, Melosira, Oscillatoria and zooplankton from genus Creseis, tubifex and Daphnia. Natural food that became the main food of bilih fish is phytoplankton from the genus Synedra with IP (Index Preporedence) > 40% fish is 98.9%. Natural feed becomes additional food of bilih fish <4% that is Rhizosolenia, Aulacoseira, Gonatozygon, Pinnularia, Closterium, Surirella, Gyrosigma, Melosira, Oscillatoria, Creseis, Tubifex and Daphnia. Measurement results of physico-chemical factors water good enough for the availability of natural food and life of bilih fish (Mystacoleucus padangensis Bleeker).Keywords: Fish bilih (Mystacoleucus padangensis Bleeker), Food Habits, Naborsahan River.
LAJU PERTUMBUHAN DAN KELANGSUNGAN HIDUP BENIH IKAN BOTIA (Chromobotia macracanthus) DENGAN PAKAN CACING SUTERA (Tubifex sp.) Growth Performance and Survival Rate of Botia Larvae (Chromobotia macracanthus) with Feeding Tubifex Worms (Tubifex sp.) Romi Pindonta Tarigan; Yunasfi Djayus; Indra Lesmana
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

Botia (Chromobotia macracanthus) is a freshwater fish that are having economic value is important because it has high sale value, especially in the ornamental fish market in North Sumatra. Life food is an important factor in the cultivation of ornamental fish. The research was conducted to determine the effect of feeding Tubifex worms (Tubifex sp.) on the growth performance and survival rate of Botia larvae. Tubifex worm culture do by using a wooden box with a recirculation system and the maintenance of Botia larvae done with volume 72 liter aquarium in a closed room.Experimental design using a completely randomized design with 5 treatments with 3 replications, as follows; 1) The Tubifex worms culture given chicken manure fermentation, 2) The Tubifex worms culture given cow manure fermentation, 3) The Tubifex worms culture given sheep dung fermentation, 4) Tubifex without treatment, 5) Pellet ornamental fish. The survival rate was 100 % in each treatments. Feeding the Tubifex worms are cultured with sheep dung fermentation gives the best results on the survival rate (SR), the absolute length (L), absolute weight (W), and daily growth rate (GR), respectively 1.02 cm, 0.91 g, and 2.57% for 30 days of maintenance.Keywords: Artificial feed, Botia, Tubifex.
PERTUMBUHAN DAN LAJU EKSPLOITASI UDANG KELONG (Penaeus merguiensis) DI PERAIRAN KABUPATEN LANGKAT SUMATERA UTARA The Growth and Exploitation Rates of Kelong Shrimp (Penaeus merguiensis) in Langkat District, North Sumatera Green Alfath Siregar; Yunasfi Djayus; Ani Suryanti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The samples of Kelong shrimps are 1758 which consist of 654 male shrimps and 1104 female shrimps. The growth pattern of Kelong Shrimps is negative allometric. The frequency distribution of the carapace length of Kelong Shrimps is in the range of 13.07-39.68 mm, the size group which is dominating the male Kelong Shrimps and female Kelong Shrimps is 24.57-25.88. The assumption of the Von Bertalanffy growth parameter of male Kelong Shrimps L∞ is 36.30 mm with K=0.5 per year, the assumption of the value of female Kelong shrimps L∞ is 41.91 mm with K=0.62 per year. The rates of the natural mortality (M) is 1.161 per year. The mortality caused by the arrest (F) is 1.365 per year show the exploitation rates is 0.54. The value E which is obtained, is showing the indication overfishing of Kelong Shrimps. The comparison of male and female Kelong shrimps is 1:1.688. The value of the condition factor which shows that Kelong Shrimps have the body shape which is flat (thin).Keywords: Growth, exploitation rates, Penaeus merguiensis, Langkat
The Ecological Condition of Mangrove in Bali Beach, Mesjid Lama Village, Talawi Sub District, Batu Bara District, North Sumatera Province. Ofi Sabrina Sitompul; Yunasfi Djayus; Ahmad Muhtadi Rangkuti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Mangrove is the living plant community between the sea and the land that was influenced by the tides. Bali beach in Mesjid Lama village, Batu Bara Regency of North Sumatera Province has an area of mangrove forest about 637,22 ha. Bali beach still has a natural mangrove ecosystem. But, the coastal has long been used by the local community as a source of livelihood especially mangrove forest logging. This research was aimed to know the ecological condition of mangrove forest and condition of the mangrove waters. This research is done in March 2014 to Mei 2014. This research is done with a purposive sampling method by taking and observing of biotic components which was mangrove vegetation and the measurement of water quality parameters. There are 10 kinds of mangrove which found in the research location, namely Aegiceras corniculatum, Avicennia lanata, A. marina, A. officinalis, Bruguiera cylindrica, B. sexangula, Ceriops tagal, Excoecaria agallocha, Rhizophora mucronata and R. stylosa. Kinds of mangrove substrate at this research is clay, loam and silty loam. The biggest diversity index is in the station II.Keywords : mangrove, the ecological condition, water quality, Batu Bara District.
IDENTIFIKASI DAN ANALISIS HUBUNGAN PANJANG BOBOT IKAN GELODOK (FAMILI : GOBIIDAE) DI PANTAI BALI DESA MESJID LAMA KECAMATAN TALAWI KABUPATEN BATU BARA PROVINSI SUMATERA UTARA Sabilah Fi Ramadhani; Yunasfi Djayus; Ahmad Muhtadi Rangkuti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Bali beach is one of the beaches in the Batu Bara, precisely located in the Mesjid Lama Village, Sub-district of Talawi, District of Batu Bara, North Sumatra Province. There is a coastal mangrove forests in this area. Mangrove is a good habitat for mudskipper. The research aims to determine identification and lenght weight analysis of mudskipper. The research was conducted from March until June 2014. The Method of the research is purposive sampling. For fishing example, the stations or area was used consisted of three transects of which are with beaches, mangroves, and rivers. There are four types of fish can be found in those areas, which are Periophthalmus chrysospilos, Periophthalmus gracilis, Boleophthalmus boddarti and Periophthalmonodon schlosseri. If we sorted that length weight relationship were 3.26 cm, 0.91 cm, 3.06 cm, and 3.01 cm.Keywords: Bali Beach, identification, length weight relationship, Mudskipper.
KAJIAN KESESUAIAN EKOWISATA MANGROVE DI PANTAI BALI DESA MESJID LAMA KECAMATAN TALAWI KABUPATEN BATU BARA PROVINSI SUMATERA UTARA Pesta Saulina Sitohang; Yunasfi Djayus; Ahmad Muhtadi Rangkuti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Bali Beach is a located in Batu Bara with an area of approximately 637.22 ha which is a coastal area about 30.6% of the total area.This study aims to determine the potential of mangrove ecosystem for ecotourism, calculate the suitability and mangrove ecotourism carrying capacity. This research was conducted in March to April 2014. Research method used was Purposive Sampling for potential mangrove. Using three stations consisted of the first station (located at the eastern area of Bali Beach), second station (located at the middle area of Bali Beach), and the third station (located at the west coast of Bali Beach). The mangrove species found are: Excoecaria agallocha, Avicennia marina, A.lanata, Bruguiera sexangula, B.cylindrica, Rhizophora mucronata, Aegiceras corniculatum, A.Officinalis, R. stylosa, Ceriops tagal with a population density values exceeding 1000 trees / ha. Suitability index tour of mangrove is 69,23%at the first station is with under unconditional category, and at the second station and third station are 94,87% with suitability category. The carrying capacity (DDK) at first station is 12 persons/day, 37 persons/day at second station and 16 persons/day at third station.Keywords : Ecotourism, Mangrove, Bali Beach
Co-Authors Adenia Constansia Sitepu Ahmad Muhtadi Ahmad Muhtadi Rangkuti Ahmad Mutadi Ahmad Rizki Albino Panjaitan Amanatul Fadhilah Amrullah Angga Syahputra Anggia Dolly Sibuea Ani Suryanti Atikah Asry Aznia Marlina Sima Bill Maulana Bidawi Buana Sukri Tanjung Christina Sagala Cut Hannelida Eriza Daniel Abas Herman Silalahi Danra Siallagan Debi Debora Haro Dedi Pradana Desita Sari Br Ginting Desrita Desrita Desy Ariska Dewi, Rita Rosmala Dinarta Hutabarat Dizza Ayu Putri Dumaria R. M. L Tobing DWI SURYANTO Elisa Januarita Doloksaribu Ely Ermayani Endaiyana Libertyta Ester Nelya Tindaon Fahmi Fadhli Rais Fatimah Murni Febrina Arli Fina Fitriyani Friyuanita Lubis Gilang Pradifta S Green Alfath Siregar Hafiz Muhammad Henny Christien Horas M. C. Simatupang Huria Marnis Indah L. M Tambunan Indra Lesmana Josephin Saut Sintong Panjaitan M. Ridho Santoso M.Bobbie Jhora Waker MARAGUNUNG DALIMUNTHE Meia Ester Sela Ginting Meirani Ritonga Miswar Budi Mulya Muhammad Dafikri Muhammad Ma’rufi Muhammad Riza Kurnia Lubis Muhammad Rizky Nafi Sakila Nanda Mutia Hardianti Nisa Hidayati Nur Hidayah Nasution Nurasiah Riza Nurmatias Nurmatias Nurul Andrifa Nasution Nurul Azmi Ofi Sabrina Sitompul Pesta Saulina Sitohang Prasetia Ajitama Putri Ananda Tarigan Rahmad Ritonga Raissha Amanda Siregar Rangga Warsito Ratna Dewi Rebeka Paimaibot S Reza Alnanda Rika Wirani Rio Fentaria S Riri Ezraneti Risda Farida Lubis Romi Pindonta Tarigan Ronald Fadli Naibaho Rudi Hasonangan Siregar Rusdi Leidonald Sabilah Fi Ramadhani Saleha Bako Sangap Ginting Sarah Diba Sandy Sari Marina Saragi Sultan Akbar Habibullah Suria Masriani Sinaga Susanti Lawati Barus Syammaun Usman Tajuddin Siregar Tiur Natalia Manalu Ummi Febriani Ritonga Vinces Agriani Lase Vindy Rilani Manurung Yenni Ningsih Siringoringo Yudha Perdana Putra Lubis ZAINURI SYAM Zefri Ade Gurukinayan Zulham Apandy Harahap Zulkifli Nasution