Samakia : Jurnal Ilmu Perikanan 2020-04-25T06:17:03+00:00 Ach. Khumaidi Open Journal Systems <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> Water Quality Analysis In Bengawan Solo River Bojonegoro Regency 2020-04-21T07:48:09+00:00 Dyah Setyaningrum Laily Agustina R <p><em>The purposeofthis research is to analyze the water quality of Bengawan Solo River in Bojonegoro Regency. Water sampling was carried out at 6 monitoring points along the Bengawan Solo River in Bojonegoro Regency. Determination of sampling monitoring points, based on the differences of characteristics that exist in the study area. Some parameters issued are temperature, conductivity, COD, BOD, and Oil/ fat food which are then compared with the criteria for Class III standards of river water quality in accordance with the Regional Regulation of East Java Province Number 2 of 2008. Based on the analysis results obtained at each point monitor, area 1, is the most polluted area. It is caused, in this area, there are several activity of downtown. Households produce waste from bathroom, toilet, kitchen, washing clothes and washing household appliances.</em></p> 2019-11-19T00:00:00+00:00 Copyright (c) 2019 Dyah Setyaningrum, Laily Agustina R Analysis of Total Plate Count Microba in Fresh (Rastrelliger sp.) Mackerel fish` of Sorong City West Papua 2020-04-21T07:48:09+00:00 Sukmawati Sukmawati Iksan Badaruddin Evi Selfiana Simohon <p>Fish is one of the fishery food ingredients that are needed by humans, because in the fish meat there are compounds needed by the body. Such as the content of protein compounds, fats, carbohydrates, vitamins and mineral salts. Sorong in the city of mackerel is one of the fish that are of interest to the community, and its availability is abundant at the fish auction place in the city of Sorong. But in general the consumption of mackerel has not been tested either chemically or microbiologically based on the background of the purpose of this study is to determine the total microbial plate count in fresh mackerel (Rastelliger sp.) In Sorong City, West Papua. The method in this research was descriptive method, which is drawing the number of microbes through the test of the total number of microbial plates (ALT). Based on the results of the study which stated the average of the five samples approved were in sample A and sample B the amount of ALT was 3.7 x 10<sup>4</sup> cFU/mL, sample C and sample D were 1.02 x 10<sup>5</sup> cFU/mL, and sample E as much as 2.7 x 10<sup>5</sup> cFU/mL. The total number of microbial total plates (ALT) or the number of microbial total plates (TPC) in fresh mackerel (Rastrelliger sp.) in the Sorong TPI city does not exceed the maximum Indonesian national standard (SNI), and it is concluded that the fish can be consumed.</p> 2020-02-29T00:00:00+00:00 Copyright (c) 2020 Sukmawati Sukmawati, Iksan Badaruddin, Evi Selfiana Simohon The Effect of Ethanol Extract Karamunting (Melastoma Malabathricum) Leaf of Ovarian Maturation of Mud Crab (Scylla sp) in Traditional Ponds 2020-04-25T06:17:03+00:00 Awaludin Awaludin Nuril Fahrizah Heppi Iromo Muhammad Muhammad <p><em>Karamunting is a plant that contains cholesterol. Cholesterol is needed by mud crabs as precursors of reproductive hormones in ovarian development. This study aims to determine the effect of karamunting leaf extract which is injected with mangrove crabs (Scylla sp) on the level of ovarian maturity. The stages of the research included extraction of karamunting leaves using ethanol 70%, experiments by injecting the parent crabs consisting of 3 treatments A (control), B treatment (0.25 mg / g body weight), C treatment (0.5 mg / g body weight) maintained for 20 days by feeding trash fish and measuring parameters including morphological ovarian development, somatic gonad index (GSI), and hepatosomatic index (HSI). The results showed that by giving karamunting extract at the end of the GSI study on control (1.70%), treatment A (5.61%), treatment B (4.24%) while on ovarian development with morphological observation at the end of the study on treatment ovarian control develops in the TKG II phase, A treatment in the TKG V phase while treatment B in TKG IV. This shows that by giving karamunting extract can provide the development of mud crab ovaries.</em></p> 2020-02-29T00:00:00+00:00 Copyright (c) 2020 Awaludin, Nuril Fahrizah, Heppi Iromo, muhammad Infestations Myxobolus sp. in Gills Koi (Cyprinus carpio) That No Clinical Symptoms 2020-04-21T07:48:09+00:00 Zulkifli Novia Christi Prihartini <p>Ornamental fish trade between regions in Indonesia allows the transfer of disease, especially if the disease does not show clinical symptoms in fish traded. Koi fish in Tahuna, North Sulawesi, mostly come from the area of ​​East Java, which is one area with many cases of myxobolusis. In addition, the potential for parasitic diseases that come along when koi fish are brought between areas cannot be avoided, because the examination of parasites, especially Myxobolus sp. no longer listed in the regulation as a quarantine inspection requirement. The purpose of this study was to see the Myxobolus sp infestation that infected koi in Tahuna, North Sulawesi, although there were no clinical symptoms using conventional techniques and histopathology. The results of the examination showed Myxobolus spore infestation on the gills of the koi, although the amount was not much, both conventional and histopathological techniques. This shows that our level of awareness of the types of parasites that can infect fish is still lacking. Myxobolus sp is only transmitted through the spore stage back and forth; there is no horizontal or vertical transmission in fish or tubifex T worm populations. More knowledge regarding the life cycle of the Myxobolus sp. in order to obtain the right handling to deal with outbreaks, especially water quality management at the location of the cultivation.</p> 2020-02-29T00:00:00+00:00 Copyright (c) 2020 Zulkifli, Novia Christi Prihartini Economical Analysis On Fishing Boats For Fishermen In The Coast Of Banyu Urip, Ujung Pangkah, Gresik 2020-04-21T07:48:09+00:00 Mahasin Maulana Ahmad Hermanto <p><em>Banyu urip is one of the many villages in the north sea of Gresik. The main livelihood of community is fisherman. To bring it to life, the fisherman need decent fishing boats that is suitable for their age. The fishing boats in Banyu urip are 6-8 years old on average. The fishing boat use fishing nets and gears, and the main catch is shellfish and some other fish. In a year, fisherman can sail up to 200 trips. To develop that potential, an economic analysis need to be done related to the benefits of fishing boats for fisherman around the Banyu urip. The purpose of this research is to find out the initial investment costs, the expenses in one trip, average income of fisherman in a year and payback period of the investment. This research was conducted in several stages, calculate ship procurement costs, operational cost in one trip and also variable cost, so that expenses and income can be known. The next step is analysis of profitability and investment payback period. Based on the results of analysis and calculation, the investment value of the ship is obtained, the price, equipment, and engine of ship are 70 million rupias. Expenses in a year, fuel cost, lubricating oil cost, provision fees, ship repair cost and also depreciation expense are 27,399,101 rupias. The income of fishing boats are 62,266,666 rupias/year with 13.37 % Internal Rate of Return and the payback period is 1.6 years.</em></p> <p><strong><em>Key Words: Economical, Fisherman, Fish Boat, Banyu Urip</em></strong></p> 2020-03-07T00:00:00+00:00 Copyright (c) 2020 Mahasin Maulana Ahmad, Hermanto Production and decomposition of mangrove litter in Jang River Estuary, Bukit Bestari District, Tanjungpinang City 2020-04-21T07:48:09+00:00 Gusti Randa Febrianti Lestari Dedy Kurniawan <p><em>The purpose of this study was to analyze the level of mangrove density, the level of production and decomposition of mangrove litter in Jang River Estuary, Bukit Bestari District, Tanjungpinang City. Determination of the research location using purposive sampling method based on development activities around the Muara Jang River mangrove area, including the area of ​​community settlement development (station 1), landfill area for the construction of shop houses and housing (station 2) and the area without development activities (station 3). To measure the density of mangroves using a plot of 10 x 10 m<sup>2</sup> with 3 plots, to measure the production of mangrove litter using litter and to measure the decomposition of mangroves using litter with a 0.5 cm mesh size placed under mangrove trees that are still affected by tides. The results showed the level of mangrove density at station 1 was 1033 ± 51 trees/ha with good criteria and moderate density, station 2 was 933 ± 115 trees/ha with rare damage and density criteria, and station 3 was 1367 ± 208 trees/ha with good criteria and moderate density. The level of mangrove litter production at Station 1 is 5.14 grams dry weight / m<sup>2</sup>, Station 2 is 2.80 grams dry weight / m<sup>2</sup>, and Station 3 is 6.67 grams dry weight / m<sup>2</sup>. The mangrove decomposition rate at station 1 was 63.33%, station 2 was 62.05% and station 3 was 67.73%.</em></p> 2020-03-11T00:00:00+00:00 Copyright (c) 2020 Gusti Randa, Febrianti Lestari, Dedy Kurniawan Water Quality Relationship with FCR Value in Intensive Shrimp Culture of Vannamei (Litopenaeus vannamei) 2020-04-21T07:48:09+00:00 Heri Ariadi Abdul Wafi Supriatna <p><em>FCR or feed conversion ratio is one of the strategic indicators on pond production which is very important for determining the costs incurred during the shrimp culture period. The purpose of this study was to examine the relationship between water physico-chemical parameters and the conversion rate of shrimp feed in intensive shrimp ponds (Litopenaeus vannamei). The research method used in this study is the ex-pose facto design during shrimp culture cycle with uniformity of treatment during the cultivation process, then the research collective data obtained periodically is analyzed by multiple linear regression. The results of this study indicate that all pond water quality variables based on quality standards are still in accordance with the standards intended for aquaculture. While based on regression analysis and t-test, the temperature variable is the only parameter that has a direct influence on the FCR efficiency by shrimp. As well as temperature, salinity, and alkalinity variables are parameters that have a close level of relationship to the FCR value in the ponds of 84.1%, 79.1%, and 69.9%. The conclusion of this study is that in intensive ponds the parameters of temperature, salinity, and alkalinity are water quality parameters that have a close relationship with the efficiency of FCR values ​​in ponds, with temperature parameters being the water quality variable which has a direct influence on the effectiveness of the feed conversion ratio by shrimp.</em></p> 2020-03-31T00:00:00+00:00 Copyright (c) 2020 Heri Ariadi, Abdul Wafi, Supriatna Acute Lethal Toxicity Test of Cd2 + Against Gambusia (Gambusia affinis) and Influence on Protease Activity 2020-04-21T07:48:09+00:00 Yuliana I Gusti Ngurah Putu Utama Moh. Awaluddin Adam <p>Cadmium the form of undamaged elements but can change shape to different compounds. The low concentrations of toxic cadmium for all life, including plants, fish, birds, mammals (including humans), and microorganisms. The purpose of this research is to know the value of LC<sub>50</sub>-96 hours Cd<sup>2+</sup> on test biota. The test biota was Gambusia fish (<em>Gambusia affinis</em>), the test biota can represented &nbsp;the actual state of the environment. The study was divided into two stages, namely preliminary test and acute lethal toxicity (LC<sub>50</sub>-96 hours), each treatment repeated three times. Acute lethal toxicity test data were analyzed probit. The results showed that the value of LC<sub>50</sub>-96 hours Cd<sup>2+</sup> to fish gambusia was 0.03 ppm. While in the protease activity of cadmium exposed preliminary fish increased activity from the control fish.</p> 2020-04-11T00:00:00+00:00 Copyright (c) 2020 Yuliana, I Gusti Ngurah Putu Utama, Moh. Awaluddin Adam