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INDONESIA
JURNAL PERIKANAN DAN KELAUTAN TROPIS
ISSN : 2302609X     EISSN : 23026081     DOI : https://doi.org/10.35800/jpkt
Jurnal Perikanan dan Kelautan Tropis merupakan terbitan berkala ilmiah yang bertujuan menjadi sarana penyebarluasan hasil penelitian dan ilmu pengetahuan dalam bidang Perikanan dan Kelautan di daerah Tropis. Hasil penelitian akan diutamakan untuk diterbitkan. Namun demikian, redaksi juga menerima ulasan ilmiah berupa tinjauan teori, ulasan buku baru, komunikasi singkat dan karya ilmiah lainnya. Artikel bisa ditulis dalam bahasa Indonesia atau Inggris.
Articles 125 Documents
AKTIVITAS ANTIBAKTERI EKSTRAK ALGA LAUT Caulerpa racemosa DARI PERAIRAN PULAU NAIN Singkoh, Marina FO
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 3 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (482.768 KB) | DOI: 10.35800/jpkt.7.3.2011.189

Abstract

ABSTRACTAlgae or seaweed is the dominant part of marine plants. Morphological-ly, it is categorized as non-vascular plants (Thallophyta) because it has no specific structural configuration such as roots, stems and leaves. This marine algae is found abundantly in the waters of Pulau Nain. Algae from these waters was tested in the laboratory to obtain pharmaceutical preparations to be used as antibacterial active ingredients. This study was carried out to determine the antibacterial activity of the Caulerpa racemosa algae. Antibacterial activity test showed that the test solution of C. racemosa algae has antibacterial activity on all five test bacteria. The size of inhibition zones formed was relatively smaller, when compared to the size of inhibition zone formed by the comparative antibiotic compounds.Keywords: Caulerpa racemosa, seaweed, antibiotic.ABSTRAKAlga atau ganggang laut (seaweed) adalah bagian terbesar dari tumbuhan laut, dimana secara morfologi dapat dikelompokkan kedalam golongan tumbuhan tidak berpembuluh (Thallophyta) karena tidak memiliki perbedaan susunan kerangka seperti akar, batang dan daun. Berdasarkan pengamatan di lapangan, alga laut banyak ditemukan di daerah perairan Pulau Nain. Dari perairan ini selanjutnya dilakukan pengujian secara laboratories untuk memperoleh sediaan farmasi yang digunakan sebagai bahan aktif antibakteri. Penelitian ini dilakukan dengan tujuan untuk menentukan aktivitas antibakteri dari alga Caulerpa racemosa. Hasil pengujian aktivitas antibakteri menunjukkan bahwa larutan uji dari alga C. racemosa memiliki aktivitas antibakteri pada ke 5 bakteri uji yang diujikan. Ukuran zona hambat yang terbentuk relatif lebih kecil, jika dibandingkan dengan ukuran zona hambat yang dibentuk oleh senyawa antibiotika pembanding.Kata kunci: Caulerpa racemosa, ganggang laut, antibiotik.
KESESUAIAN DAN DAYA DUKUNG WISATA BAHARI DI PERAIRAN BANDENGAN KABUPATEN JEPARA JAWA TENGAH Juliana, .; Sya’rani, Lachmuddin; Zainuri, Muhammad
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 9, No 1 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (710.763 KB) | DOI: 10.35800/jpkt.9.1.2013.1067

Abstract

Bandengan waters are marine tourism area which should be preserved, so that it is necessary to analyze the suitability and carrying capacity of the area. This study aims to determine the suitability of marine tourism using tourism suitability indices method based on biophysical parameters. Biophysical-water para­meters used as suitability criteria are coral reef coverage, harmful biota, depth, brightness, current velocity, bottom substrate, slope and width of the beach, land cover and type of beach and the availability of fresh water. Analysis of the carrying capacity of the area was conducted to determine the width of the area and the carrying capacity for each category of marine tourism. Based on the analysis of the suitability of marine tourism and the carrying capacity of the region, there are two categories of tourism which are very suitable to be developed in Bandengan waters. The first category is recreation and swimming with total area of 52.46 hectares and a capacity of 27,978 visitors. The second category is boating, banana boat and jet ski with a total area of 99.68 hectares and a capacity of 11,961 visitors. Kata kunci: marine tourism, suitability analysis, carrying capacity.   Perairan Bandengan merupakan kawasan wisata bahari yang harus dijaga kelestariannya, sehingga perlu dilakukan analisa kesesuaian dan daya dukung kawasan. Penelitian ini bertujuan untuk mengetahui kesesuaian wisata bahari dengan metode indeks kesesuaian wisata berdasarkan parameter biofisik perairan. Parameter biofisik perairan yang dijadikan kriteria yaitu tutupan terumbu karang, biota berbahaya, kedalaman, kecerahan, kecepatan arus, material dasar perairan, kemiringan dan lebar pantai, penutupan lahan dan tipe pantai serta ketersediaan air bersih. Analisa daya dukung kawasan dilakukan untuk mengetahui luas kawasan dan daya tampung untuk masing-masing kategori wisata bahari. Berdasarkan hasil analisa terhadap kesesuaian wisata bahari dan daya dukung kawasan, ada dua kategori wisata yang sangat sesuai untuk dikembangkan pada perairan Bandengan. Kategori wisata bahari yang pertama yaitu rekreasi dan renang dengan luas kawasan 52,46 ha dan daya tampung 27,978 wisatawan. Kategori kedua yaitu berperahu, banana boat dan jet ski dengan luas kawasan 99,68 ha dan daya tampung 11.961 wisatawan. Keywords: wisata bahari, analisis kesesuaian, daya dukung.
POTENSI JENIS-JENIS IKAN AIR TAWAR KONSUMSI MASYARAKAT ALIRAN SUNGAI DIGOEL, KABUPATEN BOVEN DIGOEL, PAPUA, DAN BEBERAPA LANGKAH PENGELOLAANNYA Rarung, Lexy K; Pratasik, Silvester B
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.571 KB) | DOI: 10.35800/jpkt.6.1.2010.116

Abstract

This study aimed at providing information on freshwater fish living in Digoel River, Boven Digoel Regency, Papua, edible for local people and some management options. Data were collected from observing the fishing activities and Tanah Merah  market, and through personal interviews as well. Results showed that there were about 23 species of native and introduced fish living in the Digoel River. Native fish population is decreasing as a result of forest clear cut, pollution, irrational fishing and predation. Therefore, management actions should be taken.
LAJU REDUKSI MERKURI OLEH PSEUDOMONAS DIISOLASI DARI PERAIRAN PANTAI TELUK MANADO Ijong, Frans G
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 2 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.377 KB) | DOI: 10.35800/jpkt.7.2.2011.180

Abstract

ABSTRACTThis study was conducted to isolate and identify Pseudomonas isolated from Manado Bay seawater and to determine the rate of mercury (Hg) reduction produced by isolated strains of Pseudomonas. A 500 ml seawater sample was collected from Tondano River and Manado Bay along the beach of the reclamation site, placed into container and taken to the laboratory for further analysis. Water samples were homogenized by hand shaking and 1 ml water sample was pipetted and then transferred to each 7 ml of Tryptic Soy Broth (pH 7.4) and Alkaline Peptone Water (pH 7.4), separately. After incubation period of 24h at 35oC, these were transferred with ose and streaked on Pseudomonas F Agar, followed by incubation at 35oC for 24h. Free growing colonies were then transferred to slant agar and kept at 4oC as stock culture. Results found that isolated Pseudomonas were chemoorganotrophic and chemoautolithotrophic, Almost all isolated Pseudomonas showed their ability in mercury ions reduction, but some of them did in mercury oxidation. Isolated chemooragnotrophic Pseudomonas tended to reduce mercury ions, but the chemoautolithotrophic one tended to oxidize it. Based on these results, it was found that the rate of Hg reduction was dependent upon the strain type.ABSTRAKTujuan penelitian ini adalah mengisolasi dan mengidentifikasi Pseudomonas dari air laut Teluk Manado serta menentukan laju reduksi merkuri (Hg) yang diproduksi oleh strain Pseudomonas terisolasi tersebut. Sampel air laut sebanyak 500 ml dikumpulkan dari Danau Tondano dan sepanjang pantai dari daerah reklamasi Teluk Manado, lalu dibawa ke laboratorium untuk dianalisa lebih lanjut. Sampel air dihomogenkan secara manual, dan 1 ml sampel air dipipet dan kemudian dipindahkan secara terpisah ke 7 ml Tryptic Soy Broth (pH 7,4) dan Alkaline Peptone Water (pH 7,4). Sete-lah masa inkubasi 24 jam pada suhu 35oC, sejumlah sampel dipindahkan ke Pseudomonas F Agar, kemudian diinkubasi pada suhu 35oC selama 24 jam. Koloni yang tumbuh bebas kemudian dipindahkan ke agar miring dan disimpan pada suhu 4oC sebagai kultur stok. Hasil penelitian menunjukkan bahwa Pseudomonas terisolasi bersifat chemoorganotrophic dan chemoautolithotrophic. Hampir semua Pseudomonas terisolasi menunjukkan kemampuan dalam penguraian ion merkuri, tetapi beberapa diantaranya dapat juga mengoksidasi merkuri. Pseudomonas yang bersifat chemooragnotrophic cenderung untuk mengurangi ion merkuri, tapi yang bersifat chemoautolithotrophic cenderung mengoksidasinya. Berdasarkan hasil tersebut dapat disimpulkan bahwa laju reduksi-Hg oleh Pseudomonas tergantung pada jenis strainnya.
MANFAAT LANGSUNG TERUMBU KARANG DI DESA TUMBAK KABUPATEN MINAHASA TENGGARA Sembiring, Ingrid; Wantasen, Adnan Sj; Ngangi, Edwin LA
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 8, No 2 (2012)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.669 KB) | DOI: 10.35800/jpkt.8.2.2012.409

Abstract

Penangkapan ikan yang destruktif (menggunakan bom dan racun) dan pengambilan karang un­tuk dijadikan fondasi rumah menjadi isu dalam pengelolaan pesisir di Desa Tumbak. Tujuan penelitian ini adalah (1) Mengetahui nilai manfaat langsung terumbu karang sebagai tempat penangkapan ikan oleh masyarakat di Desa Tumbak; (2) Mengetahui nilai manfaat langsung terumbu karang sebagai bahan ba­ngunan oleh masyarakat di Desa Tumbak; (3) Mengetahui total nilai pemanfaatan terumbu karang seba­gai tempat penangkapan ikan dan sebagai bahan bangunan oleh masyarakat di Desa Tumbak. Nilai man­faat langsung terumbu karang untuk fondasi rumah diperoleh Rp6.177.600 per tahun dan nilai manfaat langsung terumbu karang untuk penangkapan ikan karang Rp4.860.000.000. Total nilai manfaat langsung dari kedua pemanfaatan ini yaitu: Rp4.866.177.600. Total nilai ini belum termasuk pemanfaatan dalam bentuk lain terhadap ekosistem terumbu karang. Pemanfaatan terumbu karang sebagai bahan bangunan terutama disebabkan oleh faktor biaya yang murah dan jarak yang dekat dengan pemukiman. Praktik pe­manfaatan yang tidak berkelanjutan ini menyebabkan degradasi kondisi terumbu karang sehingga tutupan karang hidup berada dalam kategori rusak (sedang). Jika terjadi terus-menerus, hal ini dapat menghilang­kan fungsi ekologis sebagai peredam ombak dan fungsi ekonomis sebagai sumber pangan. Kata kunci: Tumbak; nilai manfaat langsung; terumbu karang; ekosistem   The issues of destructive fishing practices (using of bombs and poisons) and the use of corals as construction building materials have become issues in coastal management in Tumbak Village. The aims of this study are (1) to find out the value of the direct benefits of coral reefs as fishing ground to the com­munities in Tumbak village, (2) to find out the value of the direct benefits of coral reefs as building mate­rials to the communities in Tumbak village; (3) to find out the total value of the use of coral reefs as a fishing ground and as a construction materials for to the communities in Tumbak village. The value of direct benefit of the coral reef for building foundation was Rp 6,177,600 per year and the value of direct benefits for fishing was Rp 4,860,000,000. Total value of direct benefits from both of these uses was Rp 4,866,177,600. Total value did not include the use of other forms of coral reef ecosystems. In conclusi­ons, the use of coral reefs as a building materials were mainly due to the low cost and the proximity to residential areas. Such category unsustainable practice has led to the degradation of coral reefs down to damaged category (medium category). If this happened continuously, the ecological function as wave protectors and economic functions as a source of food could be eliminated. Keywords: Tumbak; direct benefit value; coral reefs; ecosystem.
Using Of Fish Silase Different Composition Toward The Growth Of Nile Tilapia Oreochromis niloticus Elton R. Lauluw; Sartje Lantu; Henneke Pangkey; Cyska Lumenta; Revol D. Monijung; Adnan S. Wantasen
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol. 10 No. 1 (2021)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.262 KB) | DOI: 10.35800/jpkt.10.1.2019.25072

Abstract

Silage is prepared by adding the probiotic into the material of bones and flesh of waste from the market.  Silage is used as element substituted with fish meal as feed for tilapia with initial weight of 19.14 to 24.86 grams and a length of 3-5 cm.  There are three types of feed using silage replacing fish meal as much as 10% (treatment A), 20% (treatment B) and 30% (treatment C) and a control used commercial feed (treatment D).  The results obtained are feed in treatment D gives very significant results to the three other feed (A, B and C) in the case of weight, rate of growth and feed efficiency; but in a further test of Duncan, statistical results showed that feed C and D more efficient than feed A.Keywords: low cost artificial feed, silage, growth, tilapia ABSTRAKSilase dipersiapkan melalui penambahan probiotik ke dalam bahan tulang dan daging dari bahan-bahan yang tidak terpakai yang diambil dari pasar.  Silase ini digunakan sebagai elemen yang disubsitusikan dengan tepung ikan untuk diberikan sebagai pakan pada ikan nila dengan berat awal 19,14-24,86 gr dan panjang 3-5 cm.  Ada tiga jenis pakan dengan menggunakan silase menggantikan tepung ikan sebanyak 10 (perlakuan A), 20 (perlakuan B) dan 30% (perlakuan C) dan sebagai kontrol digunakan pakan komersial (perlakuan D). Hasil yang diperoleh adalah pakan uji pada perlakuan D sangat memberikan hasil berbeda yang sangat nyata dengan ketiga pakan lainnya (A, B dan C) dalam hal pertumbuhan berat, laju pertumbuhan dan efisiensi pakan; namun pada uji lanjut Duncan, hasil statistik menunjukkan bahwa pakan C dan pakan D lebih efisien dibandingkan pakan A.Kata kunci: akuakultur, pakan buatan murah, silase, pertumbuhan, ikan nila
STUDI POTENSI SUMBERDAYA ALAM DI KAWASAN PESISIR KABUPATEN MINAHASA SELATAN Durand, Swenekhe Sandra
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.503 KB) | DOI: 10.35800/jpkt.6.1.2010.107

Abstract

Fisheries and marine sectors have to be the main program of North Sulawesi economic development. Since the fisheries potency is large enough and the development is good in fishing, aquaculture and fish processing, the regional government has established the fisheries sub-sector as one of the development supporting factors. The study was carried out from February to July 2008 in South Minahasa Regency. Data collection was done through structured and unstructured interviews, field observations and documentations. The study used a qualitative descriptive analytical method in spite of quantitative data collections. South Minahasa is one of the regencies in North Sulawesi with the capital of Amurang, possesses an area of 1,591.65 Km2 (population of 201,293), consists of 17 districts, 154 villages, 815 small government units. Seven districts are in the coastal areas (Tenga,Sinonsayang,East Amurang, Amurang, West Amurang, Tumpaan and Tatapaan). The coastal natural recources of this regency are mangrove ecosystem, coral reef, and sea grasses. These ecosystems have an ecological integration that will affect future fisheries recources productivity. Fisherman of South Minahasa Regency are distributed in 17 districts. The potency of coastal fisheries recources and its development in South  Minahasa Regency possesses 933 Ha of mangrove ecosystems, 1,349.6 Ha of coral reefs, and 1300 Ha of seagrass beds at Rap-Rap Wawontulap. Fishery society in Regency of Minahasa South arch gone the round in 17 districts. Sum up the fishery domestic a lot of there are in districts Amurang with the amount 563 RTP. In general fishery Society in Regency of Minahasa South arch conduct four fishery activity that is aquaculture, arrest, merchant and fish processor. Full scale aquaculture is 1.435 soul, sum up this gone the round in seven districts compassion, 236 soul in New districts Tompaso. To the effort fish arrest in the sea, do not all districts own the activity of fish arrest there's only seven districts (Tataapan, Tumpaan, Amurang East, Amurang, Amurang West, Tenga And Sinonsayang) full scalely is Fisherman catching fish in the sea 6.446 soul and which is a lot of there are in districts Tumpaan. For the fisherman of catching fish in public territorial water is only gone the round in five districts (Motoling West, Ranoyapo, New Tompaso, Maesaan And Modoinding), full scalely 59 soul and which is a lot of there are in fewest districts Modoinding there are in districts of Motoling West.
STABILITAS STATIS KAPAL POLE AND LINE KM ALDEIS DI PELABUHAN PERIKANAN AERTEMBAGA BITUNG SULAWESI UTARA Pangalila, Fransisco PT
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 1 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.375 KB) | DOI: 10.35800/jpkt.7.1.2011.10

Abstract

The uncertainty of ocean conditions, such as currents and waves, affects the maneuver ability and stability of vessel on the water. For this reason, a fishing vessel should fulfil specific prerequisites, such as strong vessel construction, good stability to extreme oceanic conditions, good maneuver ability, and thrust.  “Aldeis” boat has a dimension of 15.50 m long, 2.80 m wide, and 1.10 m deep. Average ratio of those parameters was 5.50 for L/B, 13.05 for L/D and 2.37 for B/D, rspectively.  The coefficient values of the boat shape were Cb = 0.54 for Cb, Cp = 0.73 for Cp, 0.74 for C and 0.79 for C3, respectively.  The boat possessed a maximum shakes to 140 of the boat slant when the righting arm was at 0.20 m of the center point.
IDENTIFIKASI Bacillus sp. PADA BEBERAPA TAHAPAN PENGOLAHAN FROZEN TASTELESS SMOKED TUNA Onibala, Hens
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 9, No 2 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.516 KB) | DOI: 10.35800/jpkt.9.2.2013.7338

Abstract

Penelitian ini bertujuan untuk mengidentifikasi keberadaan Bacillus sp. pada produk frozen tasteless smoked tuna dan menganalisa karakteristik Bacillus sp dengan uji mikrobiologi yang berhubungan dengan spesies-spesies yang potensial sebagai pembusuk dan patogen. Sampel yang digunakan berupa ikan tuna yang diambil dari PT. Sari Tuna Makmur Bitung pada tahapan proses pengolahan yaitu bahan baku, daging tuna yang telah diberi Karbon monoksida (CO) dan produk akhir. Pengambilan sampel dilakukan sebanyak 3 kali. Pengujian mikrobiologi meliputi pewarnaan Gram, pewarnaan spora, motility, fermentasi karbohidrat, katalase, indol, methyl red, vogues proskauer, sitrat, oksidase, H2S dan gelatin. Uji karakteristik pertumbuhan yaitu suhu, pH dan NaCl. Uji karakteristik patogenitas yaitu aglutinasi dan hemolisis. Hasil analisa total Bacillus pada beberapa tahapan proses pengolahan frozen tasteless smoked tuna yang tertinggi ditemukan pada daging tuna yang diberi CO yaitu 1,1 x 105 cfu/gr, yang diikuti oleh bahan baku 2,5 x 104 cfu/gr dan terendah pada produk akhir 1,9 x 104 cfu/gr. Berdasarkan hasil uji biokimia telah teridentifikasi 2 spesies yang diduga Bacillus yaitu B. cereus yang bersifat patogen bagi manusia dan B. coagulans yang potensial sebagai pembusuk. Kata kunci: Bacillus, Tuna, Karbon monoksida (CO).   This study aimed to identify the occurrence of Bacillus sp. on the products of frozen tasteless smoked tuna and to analyze the microbiological characteristics of Bacillus sp. including its pathogenic characteristics. Samples were tuna taken from PT. Sari Tuna Makmur Bitung, on processing phases, raw material, tuna meat treated with Carbon monoxide (CO) and final product. All Samples were taken on three times. Microbiological analyses, such as Gram-staining, spore staining, motility, fermentation of carbohydrates, catalase, indol, methyl red, Vogues Proskauer, citrate, oxidase, H2S and gelatin were done. The growth characteristics of isolated Bacillus were also done on some ranges of temperature, pH and NaCl, while the pathogenic analysis was done with agglutination and hemolysis test. Total analysis of Bacillus on all samples of frozen tasteless smoked tuna showed that the highest in tuna meat treated with CO, approximately 1.1 x 105 cfu/gr, followed by raw material, 2.5 x 104 cfu/gr, and then final product, 1,9 x 104 cfu/gr, respectively. According to biochemical test, two 2 species of Bacillus were identified, B. cereus which is potensial as human pathogen and B. coagulans as spoilage bacteria. Keywords: Bacillus, Tuna, Carbon monoxide (CO).
PERTUMBUHAN POPULASI BULU BABI (Echinometra mathaei) DI PERAIRAN PESISIR KIMA BAJO KABUPATEN MINAHASA UTARA Moningkey, Ruddy D
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 2 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (796.271 KB) | DOI: 10.35800/jpkt.6.2.2010.164

Abstract

Sea urchins of different colors were collected 50 individuals each and measured their morphological characters. The data were then transformed to natural logarithm and analyzed using regression. The comparison of the regression line intercept for the shell diameter-height relationship did not show any difference, but there was a significant difference for the shell lenght-heigth relationship. The comparison between different colors exhibited variations in the shell morphology of each sea urchin population. The growth of black spined-sea urchin (Echinometra mathaei), was negative allometric; the fact that they were mostly found in the narrow crevices might have influenced their growth.

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