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Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology
Published by Universitas Diponegoro
ISSN : 18584748     EISSN : 25490885     DOI : -
Core Subject : Education,
Education
SAINTEK PERIKANAN (p-ISSN: 1858-4748 dan e-ISSN: 2549-0885) adalah jurnal ilmiah perikanan yang diterbitkan oleh Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro. Jurnal ini diterbitkan 2 (dua) kali setahun (Februari dan Agustus).
Arjuna Subject : -
Articles 492 Documents
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AKTIVITAS SENYAWA BIOAKTIF SELADA LAUT (Ulva lactuca) SEBAGAI ANTIOKSIDAN PADA MINYAK IKAN The Activity of Bioactive Compounds from Sea Lettuce (Ulva lactuca) as Antioxidant in Fish Oil Basyrowi Arbi; Widodo Farid Ma’ruf; Romadhon Romadhon
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 12, No 1 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (184.327 KB) | DOI: 10.14710/ijfst.12.1.12-18

Abstract

 Minyak ikan adalah produk perikanan yang mempunyai asam lemak tak jenuh tinggi yang rentan akan oksidasi. Penghambatan oksidasi dilakukan dengan penambahan antioksidan pada minyak. Penggunaan bahan alami sebagai antioksidan dari U. lactuca mampu menghambat oksidasi tersebut. Tujuan penelitian ini adalah untuk mengetahui efektifitas antioksidan selada laut (U. lactuca) dalam menghambat oksidasi.  Materi yang digunakan dalam penelitian ini adalah ekstrak U. lactuca, dan minyak ikan. Metode penelitian yang digunakan adalah experimental laboratories dengan menggunakan Rancangan Acak Lengkap (RAL) faktorial yaitu faktor konsentrasi ekstrak U. lactuca (0%; 0,1%; 0,2% dan 0,3%) dan faktor lama penyimpanan (hari ke-0, hari ke-5 dan hari ke-10). Data peroxide value (PV) dan thiobarbituric acid (TBA) dianalisis menggunakan uji ANOVA, dilakukan uji lanjut Beda Nyata Jujur (BNJ), jika ada interaksi perlakuan. Hasil penelitian pendahuluan didapatkan rendemen ekstrak U. lactuca dengan pelarut etanol 96% sebesar 13,549%, nilai fenol 4,59%, flavonoid 0,59% dan aktivitas antioksidan IC50 sebesar 60,975 ppm (kuat). Hasil uji asam lemak pada minyak ikan dengan GC-MS menunjukkan kandungan asam lemak yang paling banyak adalah asam lemak tak jenuh (asam linoleat (omega -6) dan (omega-3)). Hasil penelitian utama didapatkan nilai PV berkisar antara 20,141 sampai 38,196 mEq/kg, dan nilai TBA berkisar antara 10,794 sampai 32,592 mg malonaldehid/kg pada hari ke-0. Berdasarkan hasil penelitian menunjukkan bahwa adanya interaksi antara konsentrasi ekstrak U. lactuca dan lama penyimpanan berpengaruh nyata (P<0,05).  Ekstrak U. lactuca 0,2% menghasilkan angka peroksida  terendah  yaitu 25,606±0,116 mEq/kg, dan  0,1% menghasilkan angka TBA terendah yaitu 26,802  ±0,309 malonaldehide/kg pada hari ke-10. Fish oil is a fishery product that contains  high amount of unsaturated fatty acids, which was easily  oxidated. This oxidation process can be inhibited by adding antioxidants. The use of natural antioxidants from U. lactuca known  can inhibits the oxidation. The aim of this research was  examinated the effectiveness of antioxidants from sea lettuce (U. lactuca) in inhibiting oxidation. Materials used in this research were U. lactuca extract, and fish oil. The methods used are experimental laboratories, and analyzed using Completely Randomized Design (CRD) factorial pattern is divided by a factor of U. lactuca extract concentrations (0%, 0.1%, 0.2% and 0.3%) and factor storage time (days 0, day 5 and day 10). The peroxide value (PV) and thiobarbituric acid (TBA) were analyzed using ANOVA test, then further carried test Honestly Significant Difference (HSD), a treatment interaction. Preliminary results obtained were the yield of U. lactuca extract with 96% ethanol was 13.549%, the phenol content  was 4.59%, flavonoids was 0.59%, and the antioxidant activity of IC50 was 60.975 ppm (strong). The results analyzing of fatty acids in fish oil by GC-MS showed that the fatty acid content is at most unsaturated fatty acids. The main research results were PV values obtained were range from 20.141 to 38.196 mEq/kg, and TBA values were ranged from 10.794 to 32.592 mg/kg. Based on the research results show that the interaction between U. lactuca extract concentration and storage time significantly (P<0,05) . The result of 0,2% U. lactuca exctract  contain peroxide value 25,606±0,116 mEq/kg, and  0,1 % exctract containt TBA value 26,802±0,309 malonaldehide/kg  in  the tenth day. 
Gonadal Maturity of Commercial Species of Stichopus Vastus Sea Cucumber (Holothuriidea : Sthichopodidae) in Karimunjawa Waters, Jepara Districs, Central Java Sulardiono, Bambang
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 7, No 1 (2011): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.544 KB) | DOI: 10.14710/ijfst.7.1.24-31

Abstract

Sea cucumber resources is one of the commodities of marine resources is very important and has a highcommercial value. One of the commercial sea cucumber species found in the waters of the  Stichopus vastus Karimunjawa (local name: gamets). The high commercial value sea cucumbers cause excessive exploitation of the resources, so that would threaten its sustainability. To preserve water resources in the sea cucumber can be maintained properly required for resource management actions. Aspects of reproduction is one aspect of the basis used to determine the management of aquatic resources in sea cucumbers Karimunjawa, which is associated with survival and breeding. Research purposes (1) to analyze and determine the development level of gonad maturity in the waters of Stichopus vastus Karimunjawa, (2) analyze and know the stage of mature gonads S. vastus monthly in Karimunjawa waters, (3) analyze and determine the condition of mature gonads S. vastus based on length of interval scales in the waters Karimuinjawa, and (4) identify and analyze the gonadal somatic index (GS I) when mature gonads S.vastus in Karimunjawa waters. Sample collection on a monthly basis during the period July 2010 until May 2011, within methods of systematic sampling. Samples were collected from the catch freely on a predetermined location within the boundaries of the study sites. Pickling sea cucumbers sample with 2.5% Mg Cl2 use traditional and gonad used for solution of buffered formalin. During the study found that the mature gonad stage is the stage of development that has the highest percentage compared to the stages of gonad maturity of the other. Every month observation, always get ripe gonad condition, with the percentage varying, so that seasonal patterns are less likely. Obtained information that the S. vastus spawn in the month - the month September- November and March to May, with a length of 269-286 mm size range. Quantitative assessment based on the gonad somatic index (GSI) found that in July and September in a condition to cook, while in other months, namely November, January, March, and May show the condition begins to mature. Keywords : Stichopus vastus, gonad maturity, and gonad somatic index
ANALISIS DATA BATIMETRI LAPANGAN DAN CITRA LANDSAT 8 OLI DI PERAIRAN SELAT LEPAR KABUPATEN BANGKA SELATAN (ANALYSIS BATIMETRY FIELD AND BATIMETRY CITRA LANDSAT 8 OLI IN LEPAR CURRENT REGENCY OF SOUTH BANGKA) Dewi Sartika; Agus Hartoko; Kurniawan Kurniawan
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 13, No 2 (2018): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1162.783 KB) | DOI: 10.14710/ijfst.13.2.75-81

Abstract

Selat Lepar merupakan perairan dengan batas antara kawasan pesisir Sadai dengan kawasan Pulau Lepar Kabupaten Bangka Selatan. Informasi perairan kedalaman (batimetri) merupakan salah satu hal penting dalam menentukan wilayah alur jalannya pelayaran dalam perencanaan kawasan industri Sadai.  Penelitian ini bertujuan untuk menganalisis data batimetri lapangan dan citra Satelit Landsat 8 dan membuat dalam bentuk peta 3D di perairan Selat Lepar Kabupaten Bangka Selatan. Penelitian ini dilaksanakan pada bulan Oktober hingga April di perairan Selat Lepar Kabupaten Bangka Selatan.  Metode yang telah digunakan adalah metode akustik dengan melakukan pengambilan data batimetri di lapangan menggunakan singlebeam echosounder kemudian data lapangan dibandingkan dengan metode pengolahan citra landsat 8 menggunakan algoritma Satellite Derived Bathymetry (SDB). Algoritma Satellite Derived Bathymetry (SDB) menggunakan tiga pendekatan yaitu rationing, thresholding dan mean value Kanal 5 dan Kanal 2 citra satelit Landsat 8.  Pengukuran lapangan nilai batimetri perairan Selat Lepar Kabupaten Bangka Selatan berkisar antara 0.8 – 19 m.  Model pendekatan thresholding memiliki hubungan yang paling baik dengan persamaan regresi polinomial y = -235,3(B2-B5)2 + 126,2(B2-B5) - 13.35 dan y = -235,3(B5-B2)2 – 126,2(B5-B2) – 13,35, nilai koefisien determinasi tertinggi R2= 0,849. Peta layout  batimetri perairan Selat Lepar Kabupaten Bangka Selatan dalam bentuk 3D menghasilkan kedalaman 0-19 m dengan bentuk dasar perairan dangkal, landai dan dangkal.  Lepar Strait is a borderline area between Sadai coastal area with Lepar Island area of South Bangka Regency. Basic information of bathymetry is one of important things in determining the area of the shipping path in the planning of the Sadai industrial estate. This study aims to analyze the bathymetry and Landsat 8 satellite data and create it in 3D map form in the Lepar Strait area of South Bangka Regency. This research was conducted from October to April in Lepar Strait waters in South Bangka Regency. The method that has been used is acoustic method by collecting data using singlebeam echosounder and data then proceed with the method of image processing of landsat 8 using Satellite Derived Bathymetry (SDB) algorithm. The Satellite Algorithm Derived Bathymetry (SDB) used  three  approaches  namely  rationing,  thresholding  and  the  mean  value  of Kanal 5 and Kanal 2 Landsat 8 satellite. The measurement of  bathymetry Lepar Strait of South Bangka Regency between 0.8 to 16 m. The thresholding approach model has the best relation with the polynomial regression equation y = -235.3(B2-B5)2  + 126.2 (B2-B5) - 13.35 and y = -235.3 (B5-B2) 2 - 126.2 (B5-B2) –13.35, coefficient value of determination main R2  = 0.849. Map of bathymetry layers Lepar Strait of South Bangka Regency in the form of 3D produces a depth of 0-19 m with a shallow, slope and shallow base. 
PENAMBAHAN VITAMIN C PADA PAKAN DAN PENGARUHNYA TERHADAP RESPON OSMOTIK (Addition of Ascorbic Acid in Feed and Effects on Osmotic Responses, Feed Efficiency and Growth of Gesit Tilapia (Oreochromis sp) in Various Osmolarity of Water Medium) Nurcahyo Kursistiyanto; Sutrisno Anggoro; Suminto Suminto
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 8, No 2 (2013): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.021 KB) | DOI: 10.14710/ijfst.8.2.66-75

Abstract

Vitamin C yang tepat dalam pakan diharapkan dapat meningkatkan efisiensi pakan dan pertumbuhan ikan nila gesit yang dipelihara pada media dengan osmolaritas berbeda. Tujuan dari penelitian ini (1) untuk menguji respon osmotik, efisiensi pakan dan pertumbuhan ikan nila gesit dalam berbagai osmolaritas media (2) mengetahui pengaruh penambahan vitamin C pada pakan yang diharapkan mampu memperbaiki respon osmotik (3) meningkatkan efisiensi pakan dan pertumbuhan ikan nila gesit yang dipelihara pada media dengan tingkat osmolaritas berbeda. Hewan uji yang digunakan adalah benih ikan nila gesit dengan bobot 6.22 ± 0.089. Metode yang digunakan adalah metode eksperimental uji laboratoris. Rancangan percobaan yang dipergunakan dalam penelitian ini adalah Rancangan Acak Lengkap dengan pola Faktorial, dengan 3 kali pengulangan. Perlakuan kelompok pertama (A) osmolaritas media yang berbeda yaitu (5.41, 141.34, 288.08, 434.83, 581.57 dan 728.31 mOsm/L H2O), sedangkan kelompok perlakuan kedua (B) adalah vitamin C ditambahkan pada makanan dengan dosis 100 mg (kg pakan)-1 dan 150 mg (kg pakan) -1. Sampling dilakukan 45 hari yang dipergunakan untuk menentukan pertumbuahan bobot biomassa, tingkat konsumsi pakan, efisiensi pemanfaatan pakan, protein efisiensi ratio, laju pertumbuhan spesifik dan kelulus hidupan. Data dianalisis dengan analisis kovarians (ANCOVA) dan polinomial orthogonal. Untuk mengetahui perbedaan perlakuan diuji dengan uji F dengan program SPSS versi 17. Hasil penelitian menunjukkan bahwa berbagai osmolaritas media air memiliki pengaruh yang signifikan (p < 0.01) dari semua variabel. Penambahan vitamin C dalam pakan memiliki pengaruh yang signifikan terhadap respon osmotik, dengan probabilitas sebesar 0.000 (p < 0.01), dan memiliki pengaruh yang signifikan (p < 0.05) terhadap pertumbuhan berat biomassa, efisiensi pakan dan rasio efisiensi protein. Interaksi antara media osmolaritas yang berbeda dan vitamin C memiliki pengaruh yang signifikan (p < 0.01) pada respons osmotik. Pertumbuahan bobot biomassa, tingkat konsumsi pakan, efisiensi pemanfaatan pakan, protein efisiensi ratio, laju pertumbuhan spesifik dan kelulus hidupan menunjukkan pola kuadrat. Kata kunci : Osmolaritas pada media, vitamin C, respon osmotik, effisiensi pakan, pertumbuhan. Proper ascorbic acid in feed is expected to increase the feed efficiency  and growth of gesit tilapia  were reared in various osmolarity of water medium . The purpose of this study (1) to examine the osmotic responses , feed efficiency and growth of gesit tilapia in various osmolarity of water medium (2 ) to examine the effect of proper ascorbic acid to osmotic responses, feed efficiency and growth of gesit tilapia , (3) examine the interaction between the various osmolarity of water medium and ascorbic acid to osmotic responses, feed efficiency and growth of  gesit tilapia . The material used is a seed gesit  tilapia weighing 6.22 ± 0.089. The research is experiments laboratory.  Research using completely randomized design with factorial   and three repplications. The first group treatment (A) osmolarity of water medium i.e. (5.41, 141.34, 288.08, 434.83, 581.57 and 728.31 mOsm/L H2O), whereas the second group treatment (B) is ascorbic acid  added to the feed at a dose of 100 mg (kg of feed) -1 and 150 mg (kg of feed) -1. 45 day old gesit tilapia maintenance and variables taken this research: were the osmotic responses, feed efficiency , growth,  protein efficiency ratio, survival growth rate, energy retention and survival rate. Data were analyzed by analysis of covariance (ANCOVA) and orthogonal polynomial. To know the difference in treatment was tested using the F test with SPSS program version 17. The results showed that the various  osmolarity of water medium have influence significant (p < 0.01) on all variables. An addition of ascorbic acid in feed have influence significant on the osmotic responses, with a probability of 0.000 (p < 0.01), and had a significant influence (p < 0.05) on the growth of biomass weight, feed efficiency and protein efficiency ratio. Interaction between various osmolarity of water medium and ascorbic acid have influence significant(p < 0.01) on the osmotic responses. The pattern of osmotic responses, feed efficiency, growth, protein efficiency ratio, survival growth rate and energy retention showed a quadratic pattern. Keywords : osmolarity of water medium ,ascorbic acid, osmotic responses, feed efficiency, growth.
KARAKTERISTIK LINGKUNGAN PENENTU DISTRIBUSI DAN KEPADATAN FAUNA MAKRO BENTIK SERTA HUBUNGANNYA: STUDI KASUS GASTROPODA DAN KEPITING BRACHYURA DI KAWASAN REBOISASI MANGROVE KEPULAUAN SERIBU Syahrial Syahrial; Fahriansyah Fahriansyah; Anna Lilian; Arbaeyah Arbaeyah; Cahyani Fitrah Tanjung; Nila Sari Lubis
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 15, No 1 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.916 KB) | DOI: 10.14710/ijfst.15.1.1-10

Abstract

Hutan mangrove memiliki lingkungan yang sangat kompleks, dimana di dalam dan antar lokasi habitat mangrove saling berbeda. Kajian karakteristik lingkungan penentu distribusi dan kepadatan fauna makro bentik serta hubungannya (studi kasus gastropoda dan kepiting brachyura di kawasan reboisasi mangrove Kepulauan Seribu) telah dilakukan pada bulan Maret 2014. Hal ini bertujuan untuk mengetahui faktor-faktor lingkungan yang berperan terhadap distribusi dan kepadatan gastropoda maupun kepiting brachyura serta untuk mengetahui hubungan antara karakteristik lingkungan dengan distribusi dan kepadatan gastropoda maupun kepiting brachyura di kawasan reboisasi mangrove Kepulauan Seribu. Pengukuran karakteristik lingkungan dilakukan dengan cara insitu, sedangkan data gastropoda dan kepiting brachyura dikumpulkan dengan membuat transek garis dan plot yang ditarik dari titik acuan (tegakan mangrove terluar) dan tegak lurus garis pantai sampai ke daratan. Faktor-faktor lingkungan yang menentukan distribusi dan kepadatan gastropoda maupun kepiting brachyura dianalisis menggunakan Principal Component Analysis (PCA), sedangkan hubungannya digunakan analisis regresi linier sederhana. Hasil kajian memperlihatkan bahwa karakteristik lingkungan yang paling menentukan distribusi dan kepadatan gastropoda maupun kepiting brachyura di kawasan reboisasi mangrove Kepulauan Seribu adalah parameter pH. Hal ini mengindikasikan bahwa semakin tinggi konsentrasi pH perairan, maka kepadatan gastropoda maupun kepiting brachyura juga semakin tinggi. Begitu sebaliknya, semakin rendah konsentrasi pH perairan, maka kepadatan gastropoda dan kepiting brachyura juga semakin menurun.Mangrove forests have a very complex environment, where in and between locations mangrove habitats are different. The study of environmental characteristics determining the distribution and density of benthic macrofauna and their relationship (a case study of gastropods and crab brachyurans in the Seribu Islands mangrove reforestation area) was conducted in March 2014. The research aims to determine environmental factors that contribute to the distribution and density of gastropods and brachyurans crabs and to determine the relationship between environmental characteristics and the distribution and density of gastropods and crab brachyurans in the Seribu Islands mangrove reforestation area. Measurements of environmental characteristics were carried out by insitu method, while data on gastropods and crab brachyurans were collected by making line transects and plots drawn from the reference point (outermost mangrove stands) and perpendicular to the coastline to the mainland. Environmental factors that determine the distribution and density of gastropods and crab brachyurans were analyzed using the Principle Component Analysis (PCA), while the relationship used simple linear regression analysis. The results of the study show that the environmental characteristics that most determine the distribution and density of gastropods and crab brachyurans in the mangrove reforestation area of the Seribu Islands are pH parameters. This indicates that the higher the concentration of water pH, the higher the density of gastropods and crab brachyurans. On the contrary, the lower the concentration of water pH, the density of gastropods and crab brachyurans also decreases.
Imitation Bait Colour of Skipjack Pole and Line Gondo Puspito
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 6, No 1 (2010): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.601 KB) | DOI: 10.14710/ijfst.6.1.1-7

Abstract

A serial experimental fishing using skipjack pole and line had been carried out for 14 days from July to October 2007 in Banda Sea. The aim was to obtain the most productive colour of imitation bait to catch skipjack. The research tested three colours of imitation bait those were  red, silver and green. Result showed that the silver colour of imitation bait caught more skipjack than those two other colours. Its hook rate was 0.67 fish/minute, followed by red and green with hook rate of  0,58 fish/minute and 0.47 fish/minute.   Key Words: Imitation Bait, Life Bait, Pole and Line, Skipjack.
Field experiment of polyculture technology of tiger shrimp (P. monodon Farb.) Milkfish (Chanos chanos Forskal), and Seaweed (Gracilaria verrucosa) in Brackhiswater water pond of Borimasunggu village, Maros regency Markus Mangampa; Burhanuddin Burhanuddin
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 10, No 1 (2014): JURNAL SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.275 KB) | DOI: 10.14710/ijfst.10.1.30-36

Abstract

Polyculture technology is the culture of various species of fish which has similar trophic level, where the organisms are perform biological and chemical processes in synergy with several advantages in the ecosystem. Field experiment was done in the brackhiswater ponds Borimasunggu vilage Maros regency, South Sulawesi, using 3 ponds of 1.0 ha pond-1. The research was aimed to apply the polyculture technology of tiger shrimp, fish and seaweed. Tiger shrimp yuvenile and milkfish yuvenile with the average weight of 0.056 ± 0.006 g and 75 ± 2.1 g. the seaweed is Gracillaria verrucosa. Stocking of seaweed performed 30 days earlier than tiger shrimp yuvenile and fish. Stocking density each pond are 1,500 kg sea weed + 30,000 tiger shrimps + 1,500 yuvenile of milk fish (A) and 1,500 kg sea weed+ 30,000 kg of tiger shrimps yuvenile (B); and (C) = 1,500 milkfish + 1,500 kg of seaweed with time of culture for 90 days. The results obtained in treatment A showed that daily growth rate of tiger shrimp: 5.66%; milkfish : 1.84% and seaweed : 2.3%. Production of tiger shrimp 165 k, milk fish : 417 kg, and seaweed 4285.7 kg dry-wet. Daily growth rate in pond B is tiger prawn: 5.21%; seaweed : 2.2%), production of tiger shrimp: 127 kg and seaweed 3,985.7 kg. While the daily growth rate for pond C is milk fish:1.91% and seaweed : 1.08% with a production of 450 kg and 3,085 kg dry-wet. Analysis economic showed that total production and income of pond C has higher revenues followed by B and A. Keywords : Policulture technology, tiger shrimp, milkfish, seaweed, daily growth rate, production.
Identification Of Mangrove Vegetation In South Segoro Anak, National Sanctuary Of Alas Purwo, Banyuwangi, East Java Mustofa Niti Supardjo
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 3, No 2 (2008): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.674 KB) | DOI: 10.14710/ijfst.3.2.9-15

Abstract

 Selection of systematic sampling at South Segoro Anak areas as vast as 4 % of mangrove vast, following the direction of pilot line from Block of PAL to Block of Randu. The parameters observed is diamater of pillar/tree highly 1.3 meters, amount pillar/tree, weaned and seedling at every plots and plant type of mangrove existing in a plot. This research is made on 16 April-28 June 2006. Result of vegetation analysis with systematic sampling method at pillar level, weaned and seedling be obtained type of mangrove they are : Avicennia alba, Avicennia lanata, Avicennia marina, Avicennia officinalis, Bruguiera gymnorrhyza, Ceriops decandra, Ceriops tagal, Excoecaria agallocha, Lumnitzera racemosa, Rhizophora mucronata, Rhizophora apiculata, Schypiphora hydrophyllacea, Sonneratia alba, Sonneratia caseolaris, Xylocarpus granatum, Xylocarpus molluccennis, Heritiera littoralis. They are forms regular or uniform distribution pattern. Calculation of Morishita index at plant of mangrove in South Segoro Anak, Alas Purwo National Park of Banyuwangi-East Java can be described that is spreading pattern is regular, because value of IS which less than 1 (one). The regular or uniform spreading is reflecting the existence of negative individual interaction, like emulation to obtaining space, nutrition and sunlight.  Keywords: Identification, vegetation, mangrove, South Segoro Anak
PERFORMA MIKROORGANISMEDENGAN PERLAKUAN BERBEDA TERHA DAP KONSENTRASI AMONIAK, NIRIT dan ASAM SULFIDA PADA LIMBAH PENCUCIAN IKAN TONGKOL Microorganism Performance with different Treatment Toward Consentration of Ammonia, Nitrite and Acid Sulfide Rafiq Fitriadi; Haeruddin Haeruddin; Churun A’in
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 11, No 2 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.038 KB) | DOI: 10.14710/ijfst.11.2.105-110

Abstract

 Teknik untuk memperbaiki kualitas perairan yang aman dan efektif salah satunya dapat menggunakan mikroorganisme.Penelitian ini menggunakan produk mikroorganismepengolah limbah dengan komposisi (Rhodopseudomonas sp., Lactobacillus sp., Aspergillus sp., Penicilium sp., Sacharomyces sp. dan Actinomycets sp.) sebagai bahan bioremidiator untuk mereduksi bahan pencemar pada limbah pencucian ikan tongkol sebagai air sampel. Penelitian ini mengukur konsentrasi amoniak (NH3), nitrit (NO2) dan asam sulfida (H2S) sebagai parameter utama dan DO, pH dan temperatur air sebagai parameter pendukung. Penelitian ini bertujuan untuk mengetahui kemampuan mikroorganisme pengolah limbah dengan perlakuan yang berbeda terhadap konsentrasi amoniak, nitrit dan asam sulfida. Perlakuan berbeda pada penelitian ini yaitu dengan 2 tahap uji, mikroorganisme tidak difermentasi dan difermentasi masing-masing selama 24 dan 96 jam dan terdiri dari 3 ulangan. Hasil yang diperoleh dari penelitian ini menunjukkan bahwa masing- masing perlakuan mengalami peningkatan konsentrasi amoniak, nitrit dan asam sulfida. Peningkatan konsentrasi amoniak, nitrit dan asam sulfida yang paling rendah dari perlakuan lainnya adalah pada perlakuan mikroorganisme yang tidak difermentasi selama 96 jam. Kata kunci: Limbah pencucian ikan, mikroorganisme, amoniak, nitrit, asam sulfida  ABSTRACT One of techniques to improve the quality of water that is safety and effectivelly can use microorganisms. This study uses a product microorganisms waste treatment with the composition are (Rhodopseudomonas sp., Lactobacillus sp., Aspergillus sp., Penicilium sp., Sacharomyces sp. and Actinomycets sp.) as a material bioremidiator to reduce pollutants and waste leaching Tongkol fish (Auxis thazard) as water samples , This study measured the concentration of ammonia (NH3), nitrite (NO2) and hydrogen sulfide (H2S) as the main parameter and DO, pH and water temperature as a secondary parameter. This study aims to determine the ability of microorganisms to the waste treatment unequal treatment of concentrations of ammonia, nitrite, and hydrogen sulfide. Different treatment on this study are the second phase of the test, the microorganism is not fermented and unfermented respectively for 24 and 96 hours and consists of three replications. The results of this study indicate that each treatment had increased concentrations of ammonia, nitrite, and hydrogen sulfide. Increasing concentrations of ammonia, nitrite and hydrogen sulfide are lower than most other treatments is the treatment of microorganisms are fermented for 96 hours. Keywords: Fish washery waste, microorganism, ammonia, nitrite, hydrogen sulfide
The Productivity of White Shrimp at Intensif Fishpond in Tulang Bawang Lampung Supono Supono
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 2, No 1 (2006): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (52.744 KB) | DOI: 10.14710/ijfst.2.1.48-53

Abstract

Since its introduction on the beginning of 2000’s the cultures of white shrimp (Litopenaus vannamei) in Indonesia highly developed.   This species which is originated from Central  America has successfully triggered shrimp cultures in Indonesia due to its high productivity.  White shrimp has several advantages such as high survival rate (SR), high density, high disease resistance, low feed conversion ratio (FCR) as well as lower feed cost.  The increase of  worldwide market demand caused shrimp farmers to increase their productivity by means of  increasing initial stock. Objective of this experiment was to study the productivity   of  white  shrimp cultured  intensively including yield,  SR,  FCR,  and average  daily gain (ADG). Method of this research was case study of white shrimp culture in Tulang Bawang, The Province of Lampung. Data were taken from 40 of 0.5 ha-shrimp ponds cultured intensively.  Results showed that the average productivity was  7,615 kg per pond with initial stock of    503,735 postlarvae,  SR of 84%, FCR of 1,4 and ADG of 0,15 gram per day.   Key words: productivity of white shrimp, intensive pond

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