JURNAL PERIKANAN DAN KELAUTAN TROPIS
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LAJU PERTUMBUHAN, EFISIENSI PEMANFAATAN PAKAN, KANDUNGAN POTASIUM TUBUH, DAN GRADIEN OSMOTIK POSTLARVA VANAME (Litopenaeus Vannamei, Boone) PADA POTASIUM MEDIA BERBEDA
Get PDFEffect of K+ concentration on growth rate, feed efficiency, potassium whole body, and osmoregulatory capacity of L. vannamei postlarvae Boone, 1931 were investigated. Treatments consisted of different concentration of K+ added to distilled water. Four treatments were set, namely A, B, C and D, where K2CO3 levels were 0, 30, 60 and 90 ppm, respectively. After the 42-days feeding trial, growth rate and potassium whole body of the shrimp under treatment D (90 ppm K2CO3) were significantly higher, while the value of osmoregulatory capacity in treatment A (0 ppm K2CO3) significantly higher than those under the other four treatments. The results indicated treatment C (60 ppm K2CO3) were the optimum K+ level for growth rate with increasing body size
STUDI POTENSI SUMBERDAYA ALAM DI KAWASAN PESISIR KABUPATEN MINAHASA SELATAN
Get PDFFisheries 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
ANALISA SEBARAN ILUMINASI CAHAYA PETROMAKS DENGAN PERLAKUAN BERTUDUNG DAN TANPA TUDUNG
Get PDFPetromaks lights are often used by fishermen as fishing tools. Transmitting light petromaks much influenced by various factors such as fading (attenuation). The purpose of this paper is to understand the distribution of light transmitting petromaks and factors influencing it. The result showed that the illumination of light shade petromaks which light transmitting distance range further (± 8 m) than petromaks lights that are not covered (± 21 m). The constant fading (attenuation) of light is also greater (0.78) for light petromaks hooded lamp from the lamp to petromaks without hood (0:24)
PENGARUH JENIS UMPAN TERHADAP HASIL TANGKAPAN IKAN PANCING LAYANG-LAYANG DI SELAT BANGKA KABUPATEN MINAHASA UTARA
Get PDFHound needlefish (Cendro or Sako) (Tylosurus sp.) including the types of fish are hard to catch because the surface movements and jumps very agile, is an effective fishing gear to catch this fish is to use a kite fishing. This study aimed to see whether there is the influence of several kinds of bait such as: blue sprat (Spratelloides robustus), sardines (Amblygaster sirm), fish cutlet mackerel scad (Decapterus macarellus), and anchovy (Stolephorus indicus) of the catch. The method used is descriptive. Â Data was collected by use four units of fishing kites gear with four types of bait treatment. Â Based on the analysis we found that the type of bait blue sprat better than mackerel scad and anchovy bait but not significantly different from the bait sardines, which are types of fish caught is Strongylura indicus (4%), Tylosurus Crocodiles (90%) and Tylosurus acus melanotus (6%)
QUANTITATIVE DATA ABOUT CORAL RECRUITMENT FROM BUNAKEN ISLAND, MANADO INDONESIA
Get PDFTujuan penelitian ini adalah untuk menentukan kepadatan pf rekrutmen karang di berbagai lokasi di Pulau Bunaken dan analis interaksi pada rekrutmen karang didasarkan pada kuantitas, kedalaman dan situs. Â Penelitian dilakukan di kedalaman 3 dan 10 meter dan tiga direplikasi di setiap kedalaman. Â Kami menggunakan metode sabuk tansect. Â Jalur ini 50m dan lebar 1m kanan dan 1m. Â Jadi daerah penelitian adalah 2x50 = 100m2. Â Ketika dilakukan penelitian kita berenang zigzag dan menghitung setiap perekrutan karang yang temukan. Â Kami ukur setiap merekrut karang yang temukan di analisa dan dicatat setiap pengukuran pada papan tulis bawah air. Â Ukuran karang adalah <5cm. Â Dari penelitian yang dilakukan, jumlah rekrutmen karang yang ditemukan adalah 96 koloni. Â Koloni ini ditemukan di tiga lokasi yaitu Liang sebagai situs I (27 koloni), Tawara sebagai situs II (30 koloni) dan Zona Inti sebagai Situs III (39 koloni). Â Kepadatan tertinggi di zona inti pada kedalaman 3 meter. Â Sebagai kesimpulan, rekrutmen karang dapat berkembang dengan baik di kedalaman 3m atau kurang dari 3m, juga di wilayah yang kurang atau tidak ada aktivitas manusia. bagaimanapun, faktor-faktor lain seperti fisik, kimia dan faktor biologis juga memainkan peranan penting dalam perkembangan karang
AKTIVITAS ANTIBAKTERI DARI EKSTRAK KASAR BAKTERI YANG BERASOSIASI DENGAN SPONGE Acanthostrongylophora sp.
Get PDFSponges have a potential to produce bioactive compounds. Their ability to do it since there is a symbiotic relationship with microorganisms in these bacteria. Because of this critical role, the bacteria symbiotic with sponge allegedly have great potential in terms of producing bioactive compounds that have been isolated from sponges (Lee, et al, 2001). In this study, using bacterial culture preparations isolated from the sponge, Acanthostrongylophora sp., the bacterial isolates were tested for their antibacterial activities using a well diffusion test. Based on the antibacterial activity test, the bacterial isolates known as BPO (shaped wavy white dots) and BPB (white threadlike have a certain type of thread) had antibacterial activity. ODS had a broad spectrum as potent against all three types of tested bacteria (Vibrio cholerae, Staphyloccocus aureus, Bacillus subtillis)
PENILAIAN MUTU ORGANOLEPTIK IKAN MUJAIR (Tilapia mossambica) SEGAR DENGAN UKURAN YANG BERBEDA SELAMA PENYIMPANAN DINGIN
Get PDFTilapia fish production is available almost all year round, so fish is easy to obtain and economic value. Use of low temperature 0°C on wet fish can prolong the process rigormortis, can suppress bacterial activity, chemical and organoleptic changes. This study aims to determine the effect of different weights to the organoleptic quality of tilapia fish during cold storage. Observations made include a description of the eyes, gills, and texture and odor panel using a team of 15 people. The results showed that weight did not influence the quality of tilapia fish orgnoleptic. And storage of up to 2 days, fish is still fresh classified