Samakia : Jurnal Ilmu Perikanan <p>Samakia Journal is one means of disseminating information on research results and science and technology advancement in the fishery field managed by the Faculty of Science and Technology University Ibrahimy. Since 2010, journal issuance is done 2 times a year, ie in February and August. Since 2016 the publication was conducted in April and October.<br><br><br>&nbsp;ISSN<strong> : 2086-3861 - &nbsp;</strong>e-ISSN :<strong> 2503-2283</strong></p> Faculty of Science and Technology University Ibrahimy en-US Samakia : Jurnal Ilmu Perikanan 2086-3861 Growth Performance of Jouvenile of Gourami (Osphronemus gouramy) by Mixing Commercial Feed With Fermented Gamal Leaves <p><em>Gouramy is freshwater fish commodity with higher market demand than other freshwater fish that mostly cultured. There are many obstacles in cultivating process i.e the slow growth and the increasing of feed price that is not automatically followed by the increasing of the fish price causing the efforts to decrease the feeding cost are urgently needed. The aims of this study were to evaluate the effect of fermented gamal leaf addition into commercial feed to the growth of gouramy fry. The design of experiment using completely randomized design with 4 levels of treatment and 3 replicates each. The result showed that the addition of fermented gamal leaf into commercial feed gives a significant effect to growth of the fry. The mix of 75% gamal leaf and 25% commercial feed is able to decrease the using of commercial feed</em></p> Fitria Apriani Eva Prasetiyono Denny Syaputra Copyright (c) 2019 Fitria Apriani, Eva Prasetiyono, Denny Syaputra 2019-09-17 2019-09-17 10 2 57 65 10.35316/jsapi.v10i2.311 Organoleptic Quality Assessment of Cakalang Fish (Katsuwonus pelamis) in Pondokdadap Fishing Port Malang District <p><em>The study was conducted in December 2018 at the Coastal Fisheries Port, Pondokdadap, Malang, East Java. The aim was to determine the level of freshness of fish and the difference in freshness of skipjack fish in three different locations such as fish auction sites, supplier / collector warehouses and directly from the fisherman around the Coastal Fisheries Port. The freshness of the fish was determined using organoleptic method. Organoleptic test is a method using the human senses as the main tool in assessing the quality of live fish and fishery products that are still in a fresh condition. After the fish dies there is a change in the fish which leads to rapid decay. The results showed that there were differences of the freshness of fish in three different locations, but&nbsp; it was still in good category of fresh fish.</em></p> Yus Isnainita Wahyu Puji Sugeng Ariadi Jalal Sayuti Copyright (c) 2019 Yus Isnainita Wahyu, Puji Sugeng Ariadi, Jalal Sayuti 2019-09-19 2019-09-19 10 2 66 72 10.35316/jsapi.v10i2.312 Reducing The Concentration of Organic Matter and Proximate of Catfish (Clarias gariepinus) Culture Medium Using Bacillus Subtilis <p>To reduce organic waste in catfish maintenance media (Clarias gariepinus) and waste management wastes a cultivation management technology is needed, one of these technologies is bioremediation using Bacillus subtilis as a bioremediator. This study aims to analyze the parameters of organic matter content including TOM (Total Organic Matter), Protein, Carbohydrates and Fat. The study was conducted in January-February 2019. This study used a factorial completely randomized design (Factorial RAL) with the addition of Bacillus subtilis 4 treatments including controls (K = Control, D1 = 100 ml / L, D2 = 10 ml / L and D3 = 1 ml / L) at 24th, 48th, 72nd, 96th and 120th hours, consisting of three replications. The results obtained from this study indicate that the concentrations of each parameters in treatments D1, D2 and D3 were lower than those of controls, indicating that Bacillus subtilis can reduce organic waste from catfish ponds. The best treatment was W5D2 as bioremediation of catfish organic waste with the remaining TOM 16.23% with an efficiency value of 84%, remaining protein 86.66% with an efficiency value of 13%, remaining carbohydrate 63.91% with an efficiency value of 36% and remaining Fat 52.69% with an efficiency value of 47%.</p> Sri Intan Anggraini Diana Arfiati Happy Nursyam Audina I. Pratiwi Ekki Windi Sofiatul Copyright (c) 2019 Sri Intan Anggraini, Diana Arfiati, Happy Nursyam, Audina I. Pratiwi, Ekki Windi, Sofiatul 2019-09-19 2019-09-19 10 2 73 82 10.35316/jsapi.v10i2.313 Natural Breeding of Snakehead Fish (Channa striata) On Concrete Ponds in Cangkringan Center For Aquaculture Technology Development Special Region of Yogyakarta <p><em>Snakehead fish (Channa striata) is a member of the Channidae family, which can live in freshwater areas or rivers, brackish water, and swamps. Snakehead fish belong to the group of savage and aggressive carnivorous fish. Snakehead fish reproduce through spawning naturally in the rainy season. Natural physiological and environmental factors can be used as a signal to stimulate spawning in this type of fish. This fieldwork practice was carried out at the Center for Aquaculture Technology Development (BPTPB), this work practice used observation, interview, and documentation methods, parameters observed included fecundity, egg fertilization, hatching rate, specific growth rate, and survival rate. The results of the observation showed that it produced 10,000 eggs, a fertilization rate of 92%, a hatching rate of 94% growth rate, a specific growth rate of 15% and a survival rate of 94%.</em></p> Kurniawan Wahyu Hidayat DH. Guntur Prabowo Dwi Amelia Supanto Copyright (c) 2019 Kurniawan Wahyu Hidayat, DH. Guntur Prabowo, Dwi Amelia, Supanto 2019-09-19 2019-09-19 10 2 83 93 10.35316/jsapi.v10i2.495 Myxobolus sp. Infection in Koi (Cyprinus carpio) in Tahuna, North Sulawesi <p>Koi (<em>Cyprinus carpio</em>) are being widely cultivated in Tahuna, North Sulawesi. <em>Myxobolus</em> sp. was found to have infected koi with white nodules such as oval-shaped tumors that resemble rice grains on the gill filaments. Examination of parasites was carried out by conventional methods, whereas analysis of the results of the data was carried out by descriptive methods. From the results of the examination, obtained seven koi fish infected with <em>Myxobolus </em>sp. with a prevalence of 23.3%. <em>Myxobolus</em> sp. examined had spore sizes between 12-15 µm × 7-9 µm and polar capsules size between 6-8 µm × 2 - 4 µm. Morphologically, <em>Myxobolus</em> sp. which was found in Tahuna, North Sulawesi is identical to <em>Myxobolus</em> sp. in Blitar, East Java.</p> Zulkifli Ayuda Dyah Nurekawati Copyright (c) 2019 Zulkifli, Ayuda Dyah Nurekawati 2019-10-05 2019-10-05 10 2 94 98 10.35316/jsapi.v10i2.518 Utilization of Ex Tin Mine Lake For Aquaculture: Case Study Of Muntok Sub District, West Bangka Regency <p><em>Tin mining has left hundreds of ex-mine lake in Muntok Subdistrict, West Bangka Regency, which is both problems and potential to be exploited. Empowerment of the lake for freshwater fish farming can provide alternative livelihood opportunities besides tin mining. The study of the use of the lakes for fish farming aims to determine the purpose of fish farming with its problems and potential. The study was conducted in June - July 2018 with a descriptive qualitative method through a process of interviews and observations during the implementation of the task of fisheries instructor. The object is on three groups who use the lake for fish farming. The lake can be used productively for catfish and catfish culture utilizing the system of the pen culture. The obstacle of using the lake for fish culture is the potential for bioaccumulation of heavy metals, the difficulty of implementing water quality management, and lower productivity compared to artificial ponds. Under cultivation is recommended to choose Clarias commodities in consideration of consumer safety against bioaccumulation of heavy metals.</em></p> Ira Triswiyana Ayu Permatasari Ardiansyah Kurniawan Copyright (c) 2019 Ira Triswiyana, Ayu Permatasari, Ardiansyah Kurniawan 2019-10-08 2019-10-08 10 2 99 104 10.35316/jsapi.v10i2.534 Calculating Depreciation of Fixed Assets Using the Straight Line Method (Case Study in Household Scale Hatchery (HSRT) Grouper Fish in Pasir Putih Village, Bungatan District, Situbondo Regency) <p><em>The purpose of the research is to describe, know and understand the value of depreciation fixed assets </em><em>&nbsp;with Straight line method.&nbsp; </em><em>At the Household Scale Hatchery (HSRT) grouper fish, village Pasirputih, Bungatan, Situbondo City.</em></p> <p><em>Qualitative research methods, descriptive type. The data collected is primary and secondary data. Respondents are taken by purposive sampling in which respondents are taken based on certain criteria. To calculate depreciation of fixed assets and their impact on profits, the Straight Line method is used. </em></p> <p><em>The size of the larvae is between 2.5 x 2 x 1.3 m to 4 x 2.5 x 1.8 m, like grading 2.5 x 2 x 1.5 to 3 x 2 x 1.5 m, like a palnton 1.5 x 1.5 x 1 m up to 3 x 2.5 x 1.8 m, rotifer tanks 1.5 x 1.5 x 1 up to 2.5 x 2 x 1.5 m and tanks of size 3 x 3 x 1.8 m up to 4 x 2.5 x 2 m. Fish that are turned over at household scale seedlings (HSRT), in Pasirputih Village, Bungatan District, Situbondo Regency are groupers. Farmers during HSRT operations, have never calculated depreciation of their HSRT infrastructure.</em></p> Musyaffa Rafiqie Copyright (c) 2019 Musyaffa Rafiqie 2019-10-15 2019-10-15 10 2 105 113 10.35316/jsapi.v10i2.530 Potential Antivirus Viral Nervous Necrosis Methanol extract of Amphora sp. in Cantang Grouper (Epinephelus sp.) <p><em>Cantang grouper received more serious attention from grouper fish farmers due to high export interest, but the attack of viral nervous necrosis (VNN) became a major obstacle in its cultivation. This study aims to explore the antiviral potential of diatom Amphora sp. to counter the VNN attack on Cantang groupers. The method used is the extraction of Amphora sp. with absolute methanol solvent. The extraction results were tested in vivo by giving Amphora sp. with different concentrations, namely: 17 µg / ml, 33 μg / ml, 50 μg / ml, and administration of extracts by challenging the 17 μg / ml + VNN, 33 μg / ml + VNN, 50 μg / ml + VNN. Fish treated with Amphora sp. also challenged by giving VNN Positive fish meat. During the period of rearing fish observed clinical behavior and symptoms. After the fish were raised for 15 days, the fish harvested were analyzed using histology, RT-PCR, and CPI methods (using the immuno ratio software) to see the HSP immune response obtained from the administration of Amphora sp. to find out its potential as a natural antivirus. From several test parameters, the concentration of extract 50 mg / ml + VNN was given to give the best response in the CPI analysis with a DAB value (61.3%). These results indicate that the methanol extract of Amphora sp. has the potential to be used as an antiviral candidate in Cantang grouper fish.</em></p> Ach. Khumaidi Astik Umiyah Copyright (c) 2019 Ach. Khumaidi, Astik Umiyah 2019-10-23 2019-10-23 10 2 114 120 10.35316/jsapi.v10i2.538 Identification of Vibrio isolated from Mangrove Sediment Near to Vannamei Ponds <p><em>This study aims to identify the vibrio in mangrove forest areas near to the location of vannamei ponds, especially in sediment substrates. The research is at the Mangunharjo sub-district in the Mayangan District, Probolinggo City, East Java Province. The time of study is august and September 2019. Isolation of bacteria being done with total plate count procedure on Thio Sulfate Citrate Bile Sucrose (TCBS) Agar, with pour plate method. Morphology characterization and the biochemical test was done to identify the bacteria.&nbsp; There are three points of the sampling area, with each area distance from 100 to 500 meters. This location choosing based on purposive sampling method, which main reason is the site must have mangrove with good vegetation and variation. It is transected by 5m x 5m, 100-gram sediment at 30-40 cm depth taken randomly using sediment scoop. Three samples of each sampling area chosen randomly at three different locations, then mixed. The result showed each deposit from different sampling locations having bacteria colony with color are yellow, green, and green blueish.&nbsp; These colony of bacteria in this sediment suspected as v. harveyii, v. alginolyticus, v. fischery dan v. mimicus.&nbsp; </em></p> Ery Gusman Copyright (c) 2019 Ery Gusman 2019-10-27 2019-10-27 10 2 121 127 10.35316/jsapi.v10i2.540