Jurnal Perikanan dan Kelautan
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Feasibility Study for Development of Baros Fish Laboratory, in Serang Regency
Get PDFA strong demand for high quality of fish seeds can not be fulfilled by the production of seed in the area of Serang district. Many people have to fulfill their needs from out side Banten area. Therefore, in order to support in solving the problem, the Office of Marine and Fisheries Servise of Serang District Government through their laboratory of fish breeding (BBI) in Baros Serang, proposing the development of breeding facilities to enlarge the increasing demand of high quality of fish seeds. This program is important to support the developmen in fish culture in Serang district as well as in Banten Province. A feasibility study for the development of the laboratory of fish breeding have been done on December 1 to 30 March 2011 with using qualitative descriptive analysis method, a simple quantitative analysis and measurement of water quality. Location of the BBI Baros was very suitable, However, the land Area of BBI is inadequate to operate in large scale production. Accordingly, in implementing fish farming based on Indonesian National Standard (SNI), Ways of Good Fish Hatchery (CPIB), Fish Ways Good (CBIB) and stem and seed certification requires Laboratory facilities are adequate. The optimal areas for fish breeding laboratory is about 4 hectares, to prepare the large production scale
THE EFFECT OF MAGNESIUM CONCENTRATION ON PROTEIN AND CHOROPHYLL a CONTENT OF Nostoc spp. REARED IN TWO CULTURED MEDIA
Get PDFNostoc merupakan jenis blue green alga yang bisa dijadikan sumber protein potensial bagi manusia. Penelitian ini bertujuan untuk mengevaluasi kandungan protein dan klorofil a dari Nostoc yang dikultur di dua media, Modifikasi Bristol dan BG 11 media, dengan perbedaan konsentrasi MgSO4.7H2O. Di antara kedua media kultur, Nostoc yang dikultur pada modifikasi Bristol media memiliki protein dan klorofil a lebih tinggi dari Nostoc yang dikultur dengan BG 11 media. Berat kering Nostoc dengan Bristol (0.02 - 0.34 gram) lebih tinggi dari BG 11 (0.02 – 0.14 gram). Kandungan protein Nostoc pada Modifikasi Bristol media lebih tinggi (283.58 – 79149.77 μg/gram berat kering) sedangkan yang dikultur dengan BG 11 media (19.31 – 2536.95 μg/gram berat kering). Untuk kandungan klorofil a BG 11 media broth (0.003 – 1.67 mg/gram berat kering) lebih tinggi dari pada Modifikasi Bristol media (0.04 – 1.05 mg/gram berat kering). Perbedaan konsentrasi MgSO4.7H2O. pada kedua media kultur berpengaruh pada kandungan protein dan berat kering dari Nostoc, akan tetapi tidak berpengaruh pada kandungan klorofil a. Penambahan 0,075 gram/liter konsentrasi MgSO4.7H2O selama tiga minggu kultur merupakan kondisi optimal untuk mendapatkan kadar protein dan klorofil a yang optimal untuk modifikasi Bristol media sedangkan pada BG 11 media kandungan protein dan klorofil a yang dihasilkan optimal pada 0,000 gram/liter MgSO4.7H2O. selama satu minggu kultur.Kata kunci : Cyanobacteria, Nostoc, Protein, klorofil
Leading commodity analysis of capture fisheries in Karimunjawa National Park
Get PDFThe leading fish commodities is a kind of fish which most in demand, has high value, expected to provide a highly income compared with other types, and also giving contribution in developing capture fishery that based on efficiency concept for achieving comparative and competitive commodity in facing of trading globalization. Karimunjawa National Park (KNP) inhabited mostly by fisherman. Its area surrounds by 111.625 ha as waters. Fishing zone is dedicated for traditional fisheries. Therefore the capture fisheries in KNP should be adjusted to accommodate conservancy and utilization objectives. This research will try to answer the question about leading fish commodity which will be developed and have big contribution to economic of Karimunjawa archipelago Jepara regency Central Java province. The objective of this study is to analyze leading fish commodity in capture fishery which can increase fisherman’s prosperity in KNP. Selection of leading fish product was conducted by implementing comparative performance index. The criteria used in the research are production’s location quotient (LQ) value of fish production, LQ value of price, market demand, and fish position on food chain. The result showed that the leading fish commodity of capture fisheries in KNP are trevallies, yellow tail, and grouper. It is recommended that the government and fisherman in KNP should priority to catch fish commodity, by developing environmantal friendly fishing gears to support the sustainability of fish resources and their habitat.capture fisheries, Karimunjawa National Park, leading commodit
Combination technique by using immunostimulant and drugs in artificial feeds for bacterial eradication in Seabass
Get PDFPathogenic bacterial namely Streptococcus sp has widely spreads in Seabass culture, particularly in fingerlings. It might caused decreasing production quality and quantity. To improve this problem, a study have been done to feed the seabass by using the combination of immunostimulan and antibiotics. The parameter observed were the survival rate and growth rate. Juveniles of 2 cm in size with Streptococcus symptoms were reared in 6 units of 2 m3 tanks with stocking density of 5,000 fishes per tank. They were fed with artificial feeds mixed by immune stimulant and antibiotics (5gr/kg and 2gr/kg, respectively). The experiment was done with 3 replicates and one control for 20 days. The results showed that the survival rates were significantly different between A and B (control) with 20.2% (3,030 ind) and 12.5% (1,875 ind), respectively. There were no significant different in the growth rates between A and B with body length 5.90 cm and 5.80 cm, respectively
The Effect of Different Shelter on The Growth and Survival Rate of Tiger Shrimp Penaeus Monodon Fab.
Get PDFThe study on the effect of shelter on growth and survival rate of the tiger shrimp (Penaeun monodon Fab.) have been carried out. Three kinds of different shelters and one control were conducted, namely (1) control, (2) shelter with mangrove branch (3) shelter with coconut branch, (4) shelter with bamboo branch. The result showed that the survival rate of tiger shrimp were 52.00%, 78.67%, 64.00%, 68.00%, respectively, while their growth rate were 9.08%, 7.74%, 5.95%, 6.85%, respectively. These findings indicated that the shelter have affected to the survival rate of the tiger shrimp, however, there were no significant difference in the growth of tiger shrimp
Test of VNN Virus Resistance In Several Economic Fish Species
Get PDFVNN or Viral Nervous Necrosis is one of dangerous pathogen which might could infects some marine fishes.This virus has various type of resistance level to different marine fish. An attempt to test the fishes which have highest level of resistance for VNN virus have been conducted. About 0.1 ml of VNN virus extract were injected to seven economic fish species. Prior the treatment, all fishes were tested using the PCR technique. The data were analysed by variance of randomized block design consisted of treatments and control. The results showed that the VNN virus injection to the fish group have significant impact at 1% level. Results of challenge test showed that Silver Pompanos have the strongest resistance against VNN virus compared to the other species with 90% of survival rate , while the PCR test showed no esophageal VNN. While the Humpback groupers have the weakest resistance with 20% of survival rate with PCR test showed that VNN infection have severe stages
Efficient Technology for Increasing the Efficiency of Small Scale Capture Fisheries Effort, A Review
Get PDFThe potential fisheries in Indonesia has been used by the community in various ways and scale. Most of the existing fishing effort is a small-scale business with a variety of problems faced including the increase in cost, aquatic environment degradation, decline in the catch as well as problems related to non-targeted fishes. In order to overcome these problems required an Appropriate Technology so that the small-scale fishing enterprises can continue to evolve. Types of appropriate technology or so called TTG, which can be adopted to improve the efficiency of small-scale fishing enterprises, namely: attractor squid, deep-sea traps, and fish meat bone separator "Suritech ™". The presence of TTG is expected to provide added value both in economic, ecological and sustainability of fishery resources so that sustainable fisheries can be realized and felt by all walks of lif
Variasi DNA Mitokhondria dari Ikan kakap Putih Budidaya dan Dari Tangkapan Liar Di Thailand
Get PDFKakap Putih (Lates calcarifer Bloch) adalah salah satu ikan ekonomis penting yang benihnya dapat diproduksi Thailand. Data genetik merupakan salah satu aspek penting dalam mengatur pemijahan induk untuk pemuliaan, namun hingga saat ini informasi terkait keragaman genetiknya masih minim. Penelitian ini bertujuan mengkaji keragaman dan perbedaan genetik kakap putih pada tiga populasi hatchery dan dua populasi alam di Thailand dengan menggunakan metode gabungan antara Restriction Fragment Length Polymorphisms dan Polymerase Chain Reaction (PCR-RFLP) pada D-loop control region di DNA mitokondria. Ditemukan tujuh potongan endonuklease dari 268 sampel yang diamati. Populasi alami Chantaburi (CH) memiliki keragaman haplotipe dan nukleotida tertinggi (h = 0.6626, π = 0.0554) dibandingkan populasi lainnya: tiga populasi hatcheri yaitu Rayong (RA), Chonburi (CB) dan Nakhon Si Thammarat (NK) ) (h berkisar antara 0.2709 – 0.3227; π berkisar antara 0.0195 – 0.386) dan populasi alam Nakhon Si Thammarat (PN) (h = 0.172, π = 0.0091). Mismatch distribution analysis mengungkap kejadian bottleneck pada beberapa generasi sebelumnya di populasi alam PN dan seluruh populasi hatcheri. Analysis of Molecular Variance (AMOVA) menunjukkan 88.95% keragaman disebabkan perbedaan dalam populasi dan 11.05 % disebabkan perbedaan antar populasi. Perbedaan genetik yang signifikan terdapat pada perbedaan antar populasi alam (ΦST = 0.239, P<0.001), namun perbedaan antar populasi hatchery tidak signifikan, menunjukkan terjadi pencampuran genetik sekerabat antar satu dengan hatcheri lainnya. Hal ini karena minimnya masukkan indukan baru dari alam. Kedua hal tersebut dapat menurunkan keragaman dan perbedaan genetik pada setiap populasi hatchery dan antar populasi hatchery. Data awal penelitian ini dapat digunakan unt