scholarly journals Prevalence, intensity, and dominance of ectoparasites in gourami (Osphronemus goramy) reared in floating net cage in Cirata Reservoir, West Java, Indonesia

2021 ◽  
Vol 6 (1) ◽  
pp. 27-33
Author(s):  
Ingga Lies Dastin ◽  
Rudy Agung Nugroho ◽  
Nova Hariani ◽  
Retno Aryani ◽  
Hetty Manurung ◽  
...  
Keyword(s):  
Dominant Species ◽  
Positive Case ◽  
West Java ◽  
Net Cage ◽  
Net Cages

The aimed of the study was to determine the prevalence, intensity and dominance of ectoparasites that infected gourami (Osphronemus goramy) which cultivated in floating net cages in Cirata reservoir, West Java. Present results showed that there were 22 gouramis infected with ectoparasites from 30 observed fish. The ectoparasites (Prevalence, Intensity and Dominance) found were Trichodina sp. (13.33%, 8.15 32.62%), Ichthyobodo sp. (3.33%, 1.00, 0.31%) Microsporadia (6.67%, 1.00, 0.31%), Carchesium granulatum (6.67%, 34.00, 20.92%), Cichligogyrus sp. (3.33%, 7.00, 2.15%), Dacthylogyrus sp. (20.00%, 2.00, 3.69%), Centrocestus sp. (6.67%, 3.00, 1.85%), Argulus sp. (56.67%, 6.94, 36.31%), Lerneae sp. (3.33%, 3.00, 0,92%), Gnatia sp. (3.33%, 1.00, 0.31%) and Hatschekia sp (3.33%, 1.00, 0.31%). The Argulus sp. had the highest prevalence with a percentage of 73.33% and becames the most dominant species with a percentage value of 36,31%. Meanwhile, Carchesium granulatum was an ectoparasite species that demonstrated the highest intensity of 34. Based on the diversity of ectoparasites, it was found as positive case that gourami cultivated in the Cirata reservoir have been infected with ectoparasites, especially from the species Argulus sp.

scholarly journals Qualitative Descriptive Data Analysis of the Competitiveness of Floating Cage Net Production in West Java Province

2021 ◽  
pp. 26-34
Author(s):  
Fitri Andayani ◽  
Asep Agus Handaka Suryana ◽  
Ayi Yustiati ◽  
Atikah Nurhayati
Keyword(s):  
Secondary Data ◽  
Literature Survey ◽  
Primary Data ◽  
Descriptive Data ◽  
West Java ◽  
Qualitative Descriptive ◽  
Cage Aquaculture ◽  
Net Cage ◽  
Net Cages ◽  
Very High

This study has the aim to analyze the competitiveness production of floating net cages aquaculture in West Java Province. The research was conducted from September 2020 – July 2021. The method used was a literature survey to determine the competitiveness of floating net cage aquaculture in 27 regencies/cities in West Java Province. Data collected was analysed descriptively. Primary data is in the form of expert judgment consisting of 20 people regarding the proportion of competitiveness of floating net cage aquaculture fisheries. Secondary data on Floating Net Cage Aquaculture Fisheries (2004 – 2019) was obtained from the office of Maritime Affairs and Fisheries of West Java Province.The results of this study indicates that the regencies with very high competitiveness are Purwakarta Regency and Cianjur Regency. While the regencies with low competitiveness are regencies/cities in the northern and southern regions.

scholarly journals Recruitment and abundance estimation of glass eel genus Anguilla in three large estuaries on the coast of Sukabumi West Java

2021 ◽  
Vol 322 ◽  
pp. 01037
Author(s):  
Triyanto ◽  
Gadis Sri Haryani ◽  
Mohammad Mukhlis Kamal ◽  
Iwan Ridwansyah ◽  
Fauzan Ali ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Rainy Season ◽  
Dominant Species ◽  
Water Discharge ◽  
Abundance Estimation ◽  
West Java ◽  
Glass Eel ◽  
The Indian Ocean ◽  
Glass Eels

The rivers on the Sukabumi Coast flow into the Indian Ocean. Three major rivers, namely the Cimandiri River, Cikaso River, and Cibuni River, are sources of glass eel fishing. This study aims to determine the recruitment and estimate of glass eel abundance for future glass eel management. The study was conducted from November 2020-April 2021. Estimation of glass eel abundance was carried out using a fyke net. The glass eel calculation is determined based on the number of glass eels caught, the water discharge entering the fyke net, the water discharge in the estuary, and other variables. The results showed that glass eel recruitment began at the beginning of the rainy season in November 2020 and lasted at the end of the study in April 2021. Anguilla bicolor bicolor is a dominant species of glass eel found in the three river estuaries. The estimated abundance of glass eel was approximately 2,583,438-13,556,650 ind./year or 326,24-1,812 kg/year. The abundance of glass eels at the estuary of Cimandiri River was higher than that of the estuary of Cibuni River and the estuary of Cikaso River.

scholarly journals Tinjauan Fikih Muamalah Terhadap Sistem Bagi Hasil Usaha Keramba Jaring Apung Desa Merangin Kecamatan Kuok Kabupaten Kampar

2020 ◽  
Vol 2 (1) ◽  
pp. 51-62
Author(s):  
Budiman Budiman ◽  
Daharmi Astuti
Keyword(s):  
Qualitative Analysis ◽  
Direct Observation ◽  
Local Community ◽  
Field Research ◽  
Legal Aspects ◽  
Profit Sharing ◽  
Analysis Approach ◽  
Net Cage ◽  
Net Cages ◽  
Cage Fish

Purpose: This study aims to determine the contract system used and the profit-sharing system of floating net cages in Merangin Village, Kuok District, Kampar Regency. Method: field research using a descriptive qualitative analysis approach. Data collected through interviews and direct observation. Finding: the results of the study revealed that in the practice of floating net cage fish cages between cage owners and employees namely Syirkah Mudharabah, in terms of the legal aspects of the Mudharabah Syirkah, the Rukun Syirkah Mudharabah, Terms, Principles, Contracts and Profit Sharing (profits and losses) that contained in the study of Muamalah Jurisprudence. Implication: socialization about business cooperation needs to be carried out in the perspective of the Shari'ah by relevant parties, to increase the understanding of the local community about the concept of business cooperation following Islamic Shari'ah

scholarly journals IPTEK MARIKULTUR BAGI KELOMPOK PEMBUDIDAYA IKAN DESA MOTANDOI SELATAN KECAMATAN PINOLOSIAN TIMUR KABUPATEN BOLAANG MONGONDOW SELATAN

2019 ◽  
Vol 7 (3) ◽  
pp. 256
Author(s):  
Carolus P Paruntu ◽  
Suria Darwisito ◽  
Antonius P Rumengan ◽  
Hengky J Sinjal ◽  
Billy Wagey ◽  
...  
Keyword(s):  
Marine Fish ◽  
Financial Management ◽  
Education And Training ◽  
Marine Aquaculture ◽  
Long Time ◽  
Group Members ◽  
Net Cage ◽  
Net Cages ◽  
Fish Harvest ◽  
And Training

The purpose of the community partnership program is to increase the capacity of independent and sustainable marine fish farmers groups.  Specific targets are 1) Increasing the quantity and quality of fish products from marine aquaculture in floating net cages, and 2) Enhancing partners' understanding and skills in terms of effective and efficient marine fish aquaculture technology in floating net cages. The main problems recorded, namely: 1) lack of knowledge of marine fish aquaculture technology in floating net cage; 2) fish harvest time that requires a long time, and 3) poor financial management.  To overcome these problems, an approach is carried out through direct education and training, mentoring, and management of fisheries business management in the field to partners.  After that, each trainee in the partner group is given the opportunity until they can do it themselves.  The target that will be achieved at the end of this education and training is that all group members and their families have knowledge of: 1) superior marine fish polyculture technology in floating net cage and 2) good financial management. Keywords: Fish cultivator group, floating net cage, South Motandoi village, financial management, marine fish polyculture technologyAbstrakTujuan program kemitraan masyarakat (PKM) adalah meningkatkan kapasitas kelompok pembudidaya ikan laut yang mandiri dan berkelanjutan. Target khusus adalah 1) peningkatan kuantitas dan kualitas produk ikan hasil budidaya laut dalam karamba jaring apung, dan 2) peningkatan pemahaman dan ketrampilan mitra dalam hal teknologi budidaya ikan laut dalam karamba jaring apung yang efektif dan efisien. Permasalahan utama yang terekam, yaitu: 1) kurang pengetahuan tentang teknologi budidaya ikan laut dalam karamba jaring apung (KJA); 2) waktu panen ikan yang membutuhkan waktu yang lama, serta 3) pengelolaan keuangan yang kurang baik. Untuk mengatasi masalah tersebut dilakukan pendekatan melalui penyuluhan dan pelatihan, pendampingan, dan pendidikan manajemen usaha perikanan secara langsung di lapangan kepada mitra. Setelah itu, setiap peserta pelatihan dalam kelompok mitra tersebut diberikan kesempatan sampai mereka bisa melakukannya sendiri.  Target akhir yang dicapai dalam PKM ini adalah semua anggota kelompok maupun keluarganya mempunyai pengetahuan tentang: 1) teknologi polikultur budidaya ikan laut dalam karamba jaring apung yang unggul, dan 2) manajemen keuangan yang baik.  Kata-kata kunci: Kelompok pembudidaya ikan, karamba jaring apung, Desa Motandoi Selatan, manajemen keuangan, teknologi polikultur ikan laut

scholarly journals A Semi-Analytical Model for Studying Hydroelastic Behaviour of a Cylindrical Net Cage under Wave Action

2021 ◽  
Vol 9 (12) ◽  
pp. 1445
Author(s):  
Mingyuan Ma ◽  
Hong Zhang ◽  
Dong-Sheng Jeng ◽  
Chien Ming Wang
Keyword(s):  
Analytical Model ◽  
Least Squares Method ◽  
Structural Parameters ◽  
Free Water ◽  
Wave Theory ◽  
Porous Membrane ◽  
Wave Forces ◽  
Different Depths ◽  
Net Cage ◽  
Net Cages

In the present study, a semi-analytical model based on the small-amplitude wave theory is developed to describe the wave fields around a single gravity-type cylindrical open fish net cage. The cage may be submerged to different depths below the free-water surface. The fish cage net is modelled as a flexible porous membrane, and the deflection of the net chamber is expressed by the transverse vibration equation of strings. The velocity potential is expanded in the form of the Fourier–Bessel series and the unknown coefficients in these series are determined from matching the boundary conditions and the least squares method. The number of terms for the series solution to be used is determined from convergence studies. The model results exhibit significant hydroelastic characteristics of the net cages, including the distribution properties of wave surface, pressure drop at the net interface, structural deflection, and wave loading along the cage height. In addition, the relationships between wave forces on the net cage with hydrodynamic and structural parameters are also revealed. The findings presented herein should be useful to engineers who are designing fish cage systems.

PROSPEK PENGEMBANGAN USAHA BUDIDAYA IKAN KERAPU MACAN SISTEM KERAMBA JARING APUNG (KJA) DI GAMPONG MEE PANGWA KECAMATAN TRIENGGADENG KABUPATEN PIDIE JAYA

2018 ◽  
Vol 9 (1) ◽  
pp. 41-53
Author(s):  
Al Asri Abubakar
Keyword(s):  
Secondary Data ◽  
External Factors ◽  
Primary Data ◽  
Survey Method ◽  
Internal Factors ◽  
Tiger Grouper ◽  
Net Cage ◽  
Marketing Costs ◽  
Net Cages ◽  
Production Period

Penelitian ini bertujuan untuk mengetahui keuntungan yang diperoleh dari budidaya ikan kerapu macan di keramba jaring apung dan mengetahui faktor internal dan faktor eksternal yang memengaruhi pengembangan usaha budidaya ikan kerapu macan dengan menggunakan sistem keramba jaring apung di Gampong Mee Pangwa Kecamatan Trienggadeng. Metode yang digunakan dalam penelitian adalah metode survei dengan jumlah populasi sebanyak 23 petani. Data yang digunakan dalam penelitian ini adalah data primer dan data sekunder. Hasil penelitian diperoleh bahwa keuntungan pada budidaya ikan kerapu macan sistem keramba jaring apung sebesar Rp. 47.289.583 per periode produksi; dan faktor internal yang mempengaruhi pengembangan budidaya ikan kerapu macan pada keramba jaring apung terdiri dari faktor kekuatan yaitu lokasi usaha, kualitas air, dukungan PEMDA, biaya pemasaran rendah, harga benih murah. Faktor kelemahan yaitu ketersediaan benih kurang, dan kurangnya sumberdaya manusia. Faktor eksternal yang mempengaruhi pengembangan budidaya ikan kerapu macan pada keramba jaring apung terdiri dari faktor peluang yaitu nilai jual ikan kerapu, pangsa pasar tinggi, peluang usaha besar, kebijakan pemerintah. Yang menjadi faktor ancaman yaitu iklim dan keamanan.AbstractThis study aims to determine the benefits gained from the cultivation of tiger grouper in floating net cages and to know the internal factors and external factors that influence the development of tiger grouper aquaculture by using floating net cage systems in Gampong Mee Pangwa, Trienggadeng District. The method used in the study is a survey method with a population of 23 farmers. The data used in this study are primary data and secondary data. The results showed that the benefits of tiger grouper aquaculture in floating net cage system were Rp. 47,289,583 per production period; and internal factors that influence the development of tiger grouper cultivation in floating net cages consist of strength factors namely business location, water quality, PEMDA support, low marketing costs, cheap seed prices. Weakness factors are lack of seed availability, and lack of human resources. External factors that influence the development of tiger grouper cultivation in floating net cages consist of opportunity factors, namely the value of grouper fish, high market share, large business opportunities, government policies. The threat factors are climate and security.Keywords: pond farmers, tiger grouper and floating net cages

A Numerical Parameter Study on Current Forces on Circular Aquaculture Net Cages

2013 ◽  
Author(s):  
Trygve Kristiansen
Keyword(s):  
Experimental Data ◽  
Current Velocity ◽  
Recent Experimental Data ◽  
Parameter Study ◽  
Force Model ◽  
Scaling Effects ◽  
Numerical Parameter ◽  
Solidity Ratio ◽  
Net Cage ◽  
Net Cages

The focus in this paper is on current forces on circular aquaculture nets, and how they vary with different parameters. The main parameters are current velocity and profile, solidity ratio of the net, sinker weights and net depth. The drag force on the net is calculated by a newly developed screen type force model. A subset of the calculations are validated by recent experimental data. The presented results are meant to represent a basis for discussing how current loads on a net cage vary with different environmental and strucural parameters. Scaling effects are discussed.

scholarly journals Pengaruh pemberian beberapa jenis pakan pada pertumbuhan ikan kerapu Cantang Epinephelus sp di Karamba Jaring Apung di Teluk Talengen Kepulauan Sangihe

2017 ◽  
Vol 4 (3) ◽  
Author(s):  
Liswara S.N. Tumadang ◽  
Julius Sampekalo ◽  
Sartje Lantu
Keyword(s):  
Weight Gain ◽  
Conversion Ratio ◽  
Food Type ◽  
Food Conversion ◽  
Research Results ◽  
Fish Flesh ◽  
Highest Weight ◽  
Food Conversion Ratio ◽  
Net Cage ◽  
Net Cages

The research was conducted in floating net cage for at Talengen Island Sangihe to study the growth of grouper (46-70 g in average) fed various type of feed including fish flesh, pellet, cassava, sago) for six weeks, and to determine the food conversion ratio of each food type. The treatments consisted of A (fish flesh), B (fish flesh + cassava), C (fish flesh+sago), D (pellet). Fish was culture in 12 floating net cages measuring 1x1x1,5 m each, 10 fish/cage. Research results showed that the highest weight gain was achieved in fish in treatment C (87.6%), followed by treatment A (76.1%) , B (69.8%), and D (52.5%).  Statistically, treatment C was significantly different  compared to treatment A, B and D. The use of fish flesh combined with sago was able to improve growth of grouper Kata kunci : Kerapu Cantang,  growth, food conversion ratio, floating net cage

scholarly journals Extensive Net Cage Culture of Nile Tilapia (Oreochromis niloticus) Fingerlings in Nutrient-enriched Pond

Our Nature ◽  
2013 ◽  
Vol 10 (1) ◽  
pp. 61-70
Author(s):  
W. Jiwyam
Keyword(s):  
Body Weight ◽  
Surface Area ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Supplemental Feeding ◽  
Cage Culture ◽  
Initial Body Weight ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Net Cage ◽  
Net Cages

To investigate the potential of extensive net cage culture for Nile tilapia (Oreochromis niloticus) fingerlings, an experiment was conducted in net cages suspended in a fertilized pond. Mixed-sex population of Nile tilapia with an average initial body weight of 0.065 g was used to stock in experimental cages. Four treatments; non added-substrate without supplemental feeding (NSNF), non added-substrate with supplemental feeding (NSAF), added-substrate without supplemental feeding (ASNF), and added-substrate with supplemental feeding (ASAF) were tested. The results indicated that addition of substrates which gave an additional submerged surface area of approximately equal to the total cage surface area did not show significant effect on the growth (p > 0.05). The fish gross yield obtained from non added-substrate cages without supplemental feeding was 1.22 kg/m3 for a 56-day period.DOI: http://dx.doi.org/10.3126/on.v10i1.7752

scholarly journals Pertumbuhan ikan kuwe putih Caranx sexfasciatus di karamba jaring apung yang diberi pakan rucah dengan bahan tambahan yang berbeda

2013 ◽  
Vol 1 (3) ◽  
Author(s):  
Grace F Mansauda ◽  
Julius Sampekalo ◽  
Cyska Lumenta
Keyword(s):  
Weight Gain ◽  
Statistical Analysis ◽  
Conversion Ratio ◽  
Food Conversion ◽  
Food Conversion Ratio ◽  
Trash Fish ◽  
Fish Weight ◽  
Net Cage ◽  
The Individual ◽  
Net Cages

The use of trash fish ( Treatment A ), trash fish + cassava( Treatment B), pellets+ trash fish ( Treatment C ) and a mixture of trash fish + cassava + pellets ( Treatment D ) as feed had been conducted to evaluate its effect on growth of Caranx sexfasciatus. This research was carried out inTelengen Bay waters, Central Tabukan District, Sangihe Islands Regency. Fish with weighing 60,9 -62,9 g were distributed in 12 net cages measuring 3x1x1 m with the density of 5 fish each. Fish were fed three times a day for seven weeks. Fish weight was measured every week. At the end of experiment, the individual weight of fish ranged from 168,7 to 222,8 g in with the highest average weigth gain was achieved in treatment A namely 222.8 g (354.2%)), followed by treatment C 178.0 g (286.6 %) treatment D 170.08 g (280.5%), and treatment B as much as 168.7 g (274.3%). Statistical analysis displayed that weight gain of fish in treatment A was significantly different as compared to that of treatments B, C, and D. There was no significant differencesbetween treatment B, C, and D. Food conversion ratio of treatment A was significantly different compared to other treatments. Food conversion ratio of treatment A was 2.80, B 4.25, C 3.70, D 3.88. as conclusion, the use of trash fish without supplementaion with others ingradients resulted in the highest absolute and relatif growth of fish and the lowest food conversion ratio of 2.80 as compared to other treatments. Keywords: Caranx sexfasciatus, weight gain, food conversion ratio, floting net cage

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