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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 944 Documents
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Hubungan ukuran kapal, panjang jaring, tenaga mesin, dan material rumpon terhadap hasil tangkapan purse seine: Studi kasus di Pelabuhan Perikanan Nusantara (PPN) Idi Rayeuk, Kabupaten Aceh Timur Makwiyah A. Chaliluddin; Junaidi M. Affan; Syahrul Ramadhan; Yulia Safitri Ismail; Fachrorazi Amir; Muhammad Muhammad; Thaib Rizwan; Alvi Rahmah; Fitri Indah Yani; Sayyid A El-Rahimi
Depik Vol 8, No 3 (2019): December 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2605.737 KB) | DOI: 10.13170/depik.8.3.15103

Abstract

Abstract. Each region has different boat sizes, fishing gear sizes, engine power, and fish agregating device (FAD)material, allegedly having different catches. The relationship between the length of the net, engine power, fishing vessel size, usually influences the catch of the fish. This study aims to determine the effect of fishing vessel size, engine power, net length and FAD material on catches volume. The study was conducted using descriptive methods conducted on 14 February-14 March 2019 in Idie Rayeak, Aceh Timur, Aceh Province. Data were analyzed  by multiple linear regression analysis. The results showed that engine power, net length and FAD material had a significant effect on the catch volume, while the fishing vessel size had no significant effect on the catch volume.Keywords: fishing vessel size, length of net, engine power, FAD material Abstrak. Setiap daerah memiliki ukuran kapal, ukuran alat tangkap, tenaga mesin, serta material rumpon yang berbeda-beda, diduga memiliki hasil tangkapan yang berbeda pula. Hubungan antara panjang jaring, tenaga mesin, ukuran kapal, biasanya berpengaruh terhadap hasil tangkapan ikan. Penelitian ini bertujuan untuk mengetahui pengaruh ukuran kapal, tenaga mesin, panjang jaring dan material rumpon terhadap hasil tangkapan. Penelitian dilakukan dengan menggunakan metode deskriptif yang dilakukan pada bulan 14 Februari - 14 Maret 2019 di perairan Idi Rayeak Aceh Timur, Provinsi Aceh.  Data dianalisis  dengan analisis regresi linier berganda. Hasil penelitian menunjukkan bahwa tenaga mesin, panjang jaring dan material rumpon mempunyai pengaruh yang signifikan terhadap hasil tangkapan, sedangkan ukuran kapal tidak mempunyai pengaruh yang signifikan terhadap hasil tangkapan.Kata kunci: Ukuran kapal, panjang jaring, tenaga mesin, material rumpon
Pemetaan batimetri sebagai informasi dasar untuk penempatan fish apartment di perairan Bangsring, Kabupaten Banyuwangi, Jawa Timur (Bathymetry mapping as basic information for fish apartment placement in Bangsring waters, Banyuwangi, East Java) M. Arif Zainul Fuad; Abu Bakar Sambah; Andik Isdianto; Awalrush Andira
Depik Vol 5, No 3 (2016): December 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (785.58 KB) | DOI: 10.13170/depik.5.3.5655

Abstract

The objective of the present research was to map the bathymetry of the Bangsring coastal area, Banyuwangi. Depth data obtained are used to consider the suitable location for fish apartment placement. The depth of the water was measured using a single beam echosounder with a frequency of 50 Hz. The data obtained by sounding process corrected by Tidal data. The tidal data measured during sampling with the observation interval of 30 minutes. The tidal correction was performed to get the depth value relative to lowest Water Surface (LWS). The results showed the depth of the Bangsring coastal area ranged from 2-49 meters. The deepest region is in the southeast of the research area. Based on the depth of the waters, the locations that can be an alternative placement of fish apartment is located by distance of 200- 250 meters in front of Bangsring coastal area with total area  approximately 30 HaPenelitian ini bertujuan untuk memetakan kedalaman perairan Bangsring, Banyuwangi. Data kedalaman yang didapat dari pemeruman selanjutnya digunakan sebagai pertimbangan untuk mencari alternatif lokasi penempatan fish apartment. Kedalaman perairan di ukur menggunakan Single Beam Echosounder dengan frekuensi 50 Hz. Pemeruman dilakukan selama 2 hari yaitu pada tanggal 17 dan 18 Maret 2016 dengan metode zig zag . Hasil pengukuran kedalaman selanjutnya di koreksi terhadap pasang surut. Pasang surut diukur selama pelaksanaan pemeruman dengan interval pengamatan 30 menit. Koreksi pasang surut dilakukan untuk mendapatkan nilai kedalaman relatif terhadap Lowest Water Surface (LWS). Hasil penelitian menunjukkan kedalaman Perairan Bangsring Berkisar antara 2-49 meter. Wilayah terdalam berada dibagian tenggara area penelitian. Berdasarkan kedalaman perairan tersebut, maka lokasi Perairan di Bangsring yang dapat dijadikan alternatif penempatan fish apartment adalah di perairan depan pantai bagian timur dengan jarak sejauh 200-250 meter dari garis pantai Bangsring dengan luas 30 Ha
Study of Organic Carbon (OC), and Calcium Carbonate (CaCO3) in the coastal area of Aceh Besar Sayed Abdul Azis; Muhammad Irham; Sugianto Sugianto
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (794.45 KB) | DOI: 10.13170/depik.11.2.24243

Abstract

Most of the coastal areas of Aceh Besar are areas of accumulation of organic compounds, one of which is Organic Carbon (OC). The purpose of this study was to analyze the chemical content by looking vertically at the content of OC, soil pH and Calcium Carbonate (CaCO3) on the coast of Aceh Besar District. Analysis of the OC content using the Walkley and Black method, while to analyze the Calcium Carbonate (CaCO3) using the Titrimetric method. Especially for the analysis of soil pH, only use a pH meter. The results showed that each station had different levels of OC and carbonate. Generally, the presence of OC decreases with depth, while the carbonate content varies. Especially for soil pH, the pH is relative to the alkaline state for each depth. The range of OC content for all stations is 0.18 – 2.48%, Carbonate 5.36 – 13.27% and pH 6.37-8.73.Keywords:CoastalOrganic CarbonCarbonateSoil pH
Komposisi dan distribusi ukuran hasil tangkapan sampingan bubu ekor kuning di Perairan Kepulauan Seribu Mokhamad Dahri Iskandar; Sugeng Hariwisudo; Budi Hascaryo Iskandar; Mulyono S Baskoro
Depik Vol 9, No 3 (2020): December 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (759.249 KB) | DOI: 10.13170/depik.9.3.18580

Abstract

Bycatch is non-target species which mostly caught at fishing operation. High quantity of bycatch mortality was predicted as one factor of fish stock depletion. Additionally, the high demand to improve fisheries production will be able to lead over fishing. This situation will affect improvement of bycatch and discarded species which will endanger the fish stock. The objective of this research was to identify bycatch composition, ratio between target species and bycatch and size distribution of dominant bycatch at yellow tail fishing operation in Seribu Islands. The research was carried out at Seribu Islands on July-August 2020. The fishing activity used pot with size length x width x height : 100 x 75 x 32.5 cm. Result of research indicated that yellow tail pot bycatch was dominated by brownstripe snapper (Lutjanus vitta) with catch amount of 330 fishes ( 15.9% of total catch) and weight of 50,861 kg (11.5% of total catch weight) followed by squirrelfishes (Sargocentron rubrum) with catch amount of 324 fishes (15.6 % of total catch) and weight of 51,181 kg (11.6%). Another dominant bycatch was striped spinecheek (Scolopsis margaritiferus) with catch amount of 289 fishes (13.9% of total catch) and weight of 40,042 kg (9.1% of total weight). Ratio of target of catch : bycatch in weight was 42.6% : 57.4%. It means, to catch 1 kg of yellow tail there will be caught 1.7 kg bycatch. Total length size of brownstripe snapper at range of 12-27 cm, squirrelfishes at range of 9-27 cm and striped spinecheek at range of 11-29 cm.Keywords:BycatchPotDiscard speciesYellow tailCatch compositionABSTRAKHasil tangkapan sampingan merupakan spesies hasil tangkapan non target yang relatif tinggi tertangkap pada operasi penangkapan. Tingginya jumlah kematian hasil tangkapan sampingan diduga menjadi salah satu penyebab menurunnya stok sumberdaya ikan di seluruh penjuru dunia. Adanya permintaan yang tinggi untuk meningkatkan produksi perikanan dapat memicu peningkatan upaya penangkapan secara berlebihan. Kondisi ini mengakibatkan hasil tangkapan sampingan akan meningkat dengan meningkatnya upaya penangkapan sehingga membahayakan stok dan populasi sumberdaya ikan. Penelitian ini bertujuan untuk mengidentifikasi komposisi hasil tangkapan sampingan, rasio antara hasil tangkapan utama dengan hasil tangkapan sampingan dan ukuran hasil tangkapan sampingan dominan yang tertangkap pada operasi penangkapan ikan ekor kuning di Perairan Kepulauan Seribu. Penelitian dilakukan di Perairan Kepulauan Seribu pada bulan Juli-Agustus 2020 dengan menggunakan bubu ekor kuning (ukuran p x l x t : 100 x 75 x 32,5 cm). Hasil penelitian menunjukan bahwa hasil tangkapan sampingan bubu ekor kuning didominasi oleh ikan kakap (Lutjanus vitta) dengan total jumlah hasil tangkapan mencapai 330 ekor ( 15,9%) dengan total bobot mencapai 50.861 kg (11,5%) disusul oleh ikan swanggi (Sargocentron rubrum) mencapai 324 ekor (15,6 %) dengan total bobot hasil tangkapan sebesar 51.181 kg (11,6%) dan ikan serak (Scolopsis margaritiferus) dengan jumlah hasil tangkapan mencapai 289 ekor (13,9%) dan bobot sebesar 40.042 kg (9,1%) dari total bobot hasil tangkapan bubu ekor kuning. Proporsi bobot hasil tangkapan utama dibanding dengan hasil tangkapan sampingan adalah 42,6% : 57,4%. Hal ini berarti untuk menangkap 1 kg ekor kuning maka akan tertangkap 1,354 kg hasil tangkapan sampingan. Ukuran hasil tangkapan sampingan dominan yang tertangkap pada bubu ekor kuning meliputi ikan kakap yang tertangkap pada selang ukuran panjang total 12-27 cm, ikan swanggi dengan selang ukuran panjang total berkisar 9-27 cm dan ikan serak dengan selang ukuran panjang total berkisar antara 11-29 cm.Kata kunci:Hasil tangkapan sampinganBubuDiscard spesiesIkan ekor kuningKomposisi hasil tangkapan
Komunitas fitoplankton di perairan Danau Laut Tawar Kabupaten Aceh Tengah, Provinsi Aceh Nurfadillah N; Ario Damar; Enan M. Adiwilaga
Depik Vol 1, No 2 (2012): August 2012
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.095 KB) | DOI: 10.13170/depik.1.2.33

Abstract

Abstract. The aims of the present study was to evaluate community structure and biomass of phytoplankton based on the depth stratification in the waters of Lake Laut Tawar. Sampling was conducted during March and April 2010. The results showed that 43 species of phytoplankton belonging to five classes were found in Lake Laut tawar. The most common class was Chlorophyceae with 20 genera, followed by Bacillariophyceae (diatoms) by 9 genera, Cyanophyceae (10 genera), Dinophyceae (2 genera), and Euglenophyceae (2 genera). The highest species composition was found at II with 15 m depth (24 genera), while the highest abundance of phytoplankton was occured at station with 10 depth (155600 cells/l), while the lowest abundance was obtained at 15 depth (12745 cells/l). Overall the phytoplankton population in Lake Laut Tawar was dominated by Bacillarophyceae. In addition, the diversity index of phytoplankton was in moderate level (2.34), while the evenness index was ranged from 0.43 to 0.87, indicate the distribution of the individuals of each species was varied, however there was no predominant species detected.Keywords. Phytoplankton, structure community, Laut Tawar Lake.
Keanekaragaman, Zonasi Serta Overlay Persebaran Bentos di Sungai Keyang, Ponorogo, Jawa Timur Vivin Alfyana Yulia Pratami; Prabang Setyono; Sunarto Sunarto
Depik Vol 7, No 2 (2018): August 2018
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1898.55 KB) | DOI: 10.13170/depik.7.2.9881

Abstract

Abstrak. Bentos merupakan organisme yang hidup sesil atau menetap di dasar sungai, dan dapat digunakan sebagai indikator pencemaran lingkungan. Penelitian ini bertujuan untuk menentukan keanekaragaman bentos, untuk mengetahui zonasi serta overlay persebaran bentos di Sungai Keyang, Kabupaten Ponorogo, Jawa Timur. Pengambilan sampel dilakukan pada bulan Oktober-November 2017 dengan metode plot/transek, penghitungan, dan analisis laboratorium. Terdapat 3 stasiun pengamatan, masing-masing stasiun terdiri dari 3 transek dan 9 plot. Pengukuran faktor lingkungan meliputi suhu, turbiditas, pH, kandungan bahan organik, DO, BOD, dan tekstur substrat. Hasil dari penelitian diperoleh 7 famili dan 14 spesies bentos. Hasil pengukuran indeks keanekaragaman (H’) yaitu 1,37-2,12 termasuk dalam kategori sedang, memiliki kemerataan yang tinggi (2,12-2,28), dan dominansi rendah (0,13-0,30). Kesimpulan dari penelitian ini adalah keanekaragaman bentos di Sungai Keyang termasuk dalam kategori sedang, zonasi dan overlay persebaran bentos pada bagian tepi dan tengah didominasi oleh Melanoides dan Tarebia, sedangkan pada bagian tergenang didominasi oleh Melanoides dan Cordulegaster.Kata kunci: bentos, keanekaragaman, Sungai Keyang, overlay persebaran, zonasi
Pengaruh penggorengan belut sawah (Monopterus albus) terhadap komposisi asam amino, asam lemak, kolesterol dan mineral Ika Astiana; Nurjanah .; Ruddy Suwandi; Anggraeni Ashory Suryani; Taufik Hidayat
Depik Vol 4, No 1 (2015): APRIL 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.975 KB) | DOI: 10.13170/depik.1.1.2366

Abstract

Abstract. The nutrition contains on eel flash aremainly amino acids, fatty acids, cholesterol, and mineral. The chemical content of foods are change during frying process. The aim of this research was to studythe rendemen, proximate composition (moisture, ashes, protein, and fat content), and analyzing the influence of deep fryingon amino acids, fatty acids, cholesterol, and mineralof eel. The research  measures were eel morfometric which includes length, diameter, circumference, total weight, yield, proximat,  amino acids, fatty acids, cholesterol, and mineral analysis on fresh eel and  after frying in 180 oC temperature for 5 minutes.Rendemen of fried eel reducedabout 26%. The increasing of  proximate levels were found on ashes by 2.56% and  fat by 14.47% while water, protein, and carbohydrate were decreased about 55.43%, 2.84%, and 14.19% respectively. All of the eel amino acids were decrease after deep frying. The highest non essensial amino acid on fresh and fried eel were glutamic acids by 12,89 g/100g and 9,06 g/100g respectively, and essensial amino acid were lisin by 7,13 g/100g and 4,91 g/100g respectively. Limit amino acid on fresh and fried eel were histidine by 1,54 g/100g and 1,18 g/100g respectively.Deep frying could increase palmitic acid by 17.37%, oleic acid by 24.31%,and EPA by 1.42%. Cholesterol content average of fresh eel was 30.15 mg /100 grams and fried eel was 170.44 mg /100 grams. Calcium, natrium, kalium, magnesium, iron, and zinc are decrease and the copper wereincrease.Keywords : composition; eel; heating; nutrition; processingAbstrak. Kandungan gizi dalam daging belut sawah diantaranya adalah asam amino, asam lemak, kolesterol, dan mineral. Proses penggorengan dapat mempengaruhi kandungan kimia suatu bahan pangan. Penelitian ini bertujuan untuk mempelajari rendemen, komposisi proksimat (air, abu, protein, dan lemak) serta menganalisis pengaruh penggorengan terhadap kandungan asam amino, asam lemak, kolesterol, dan mineral belut sawah. Penelitian mencakup pengukuran morfometrik belut sawah segar yang meliputi panjang, diameter, lingkar badan, dan berat total, pengukuran rendemen, analisis proksimat, analisis asam amino, asam lemak, kolesterol, dan analisis mineral pada belut sawah segar dan setelah penggorengan dengan suhu 180 oC selama 5 menit.Rendemen belut goreng mengalami susut sebesar 26%. Perubahan kadar proksimat adalah peningkatan kadar abu sebesar 2,56% dan peningkatan kadar lemak sebesar 14,47%. Penurunan terjadi pada kadar air yaitu sebesar 55,43%, protein sebesar 2,84%, dan karbohidrat sebesar 14,19%. Keseluruhan kandungan asam amino belut mengalami penurunan setelah penggorengan. Asam amino non esensial tertinggi pada belut sawah segar dan goreng adalah asam glutamat yaitu 12,89 g/100g dan 9,06 g/100g, sedangkan asam amino esensial yang tertinggi adalah lisin yaitu 7,13 g/100g dan 4,91 g/100g. Asam amino pembatas pada belut sawah segar dan goreng adalah histidin yaitu 1,54 g/100g dan 1,18 g/100g. Proses penggorengan dapat meningkatkan kandungan asam palmitat sebesar 17,37%, asam oleat sebesar 24,31%, dan EPA sebesar 1,42%. Kandungan kolesterol rata-rata belut segar adalah 30,15 mg/100 gram dan belut goreng adalah 170,44 mg/100 gram.Mineral  kalsium, natrium, kalium, magnesium, besi, dan seng juga mengalami penurunan sedangkan tembaga mengalami kenaikan.Kata kunci :belut sawah; komposisi; gizi; pemanasan; pengolahan            
Sebaran kandungan CO2 terlarut di perairan pesisir selatan Kepulauan Natuna August Daulat; Mariska Astrid Kusumaningtyas; Rizki Anggoro Adi; Widodo Setiyo Pranowo
Depik Vol 3, No 2 (2014): August 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (842.408 KB) | DOI: 10.13170/depik.3.2.1538

Abstract

Abstract. Biogeochemical cycles in coastal ecosystem is influencing the water quality and it is further affect on productivity and sustainability of coastal waters. Carbondioxide is one of the important parameter in biogeochemical cycles in coastal waters, it is formed as DIC (Dissolved Inorganic Carbon) in water and TOC (Total Organic Carbon) in sediment. The purpose of this research was to determine the distribution concentration of dissolved CO2 in the southern coastal waters of Natuna Islands. Insitu measurement was conducted for some parameters of water qualities both physical (i.e. temperature and turbidity) and chemical (i.e. DO, pH and salinity) parameters. DIC was analyzed in LIPI laboratory using Giggenbach titration method, while TOC in sediment was analyzed in Proling Laboratory, Institut Pertanian Bogor. The water quality of the southern coastal waters of Natuna Islands generally in a good condition according to the Ministry of Environment Decree, Number 51, year 2004. The results showed that spacial distribution of DIC ranged from 1.9 to  2.3 mol/kg, while TOC content of the water was ranged from 0.25 g/kg to 1.19 g/kg. Sediment distributions were dominated by sandy, silty sand, sandy silt and coral reefs, therefore the sediment has potencial as organic carbon storage and indicates a good productivity.Keywords: Carbondioxide; Dissolved Inorganic Carbon; Total Organic Carbon; Natuna Islands Abstrak.  Siklus biogeokimia yang terjadi pada ekosistem pesisir dapat mempengaruhi kualitas perairan dan berfungsi sebagai penunjang keberlanjutan dan kesuburan perairan. Karbondioksida adalah salah satu parameter penting dalam siklus biogeokimia di perairan pesisir baik berupa DIC (Dissolved Inorganic Carbon) di dalam air maupun berupa TOC (Total Organic Carbon) di dalam sedimen. Penelitian ini bertujuan untuk mengetahui sebaran kandungan CO2 terlarut di perairan pesisir selatan Kepulauan Natuna. Pengukuran insitu dilakukan terhadap beberapa parameter kualitas air baik fisika (temperatur dan kecerahan) maupun kimia (DO, pH dan salinitas). Metode titrasi Giggenbach digunakan untuk analisis DIC di laboratorium LIPI, sedangkan TOC dalam sedimen dianalisis di laboratorium Proling, IPB. Kualitias air di perairan pesisir selatan Kepulauan Natuna secara umum masih berada dalam kondisi baik berdasarkan Keputusan Menteri Negara Lingkungan Hidup No. 51 tahun 2004. Hasil penelitian menunjukan sebaran spasial parameter kandungan CO2 dengan kandungan DIC berkisar antara 1,9-2,3 mol/kg, sedangkan kandungan TOC perairan berkisar antara 0,25-1,19 g/kg. Sebaran sedimen didominasi oleh pasir, pasir lanau, lanau pasiran dan terumbu karang yang berpotensi besar menyimpan karbon organik didalam sedimennya dan mengindikasikan kesuburan perairan pesisir selatan Kepulauan Natuna tergolong baik.
Resistensi dan karakter molekuler benih gurami sowang Osphronemus goramy Lacepede, 1801 asal induk berbeda Kusbiyanto Kusbiyanto; Agus Nuryanto; Petrus H. T. Soedibja
Depik Vol 6, No 3 (2017): December 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.309 KB) | DOI: 10.13170/depik.6.3.6539

Abstract

The cultivation of giant gourami is constrained by its high mortality due to low resistance to diseases. Resistance is an inherited character from the parental to their seeds. High resistance seeds can be selected using molecular marker, such as Major Histocompatibility complex (MHC) gene. Resistance character is assumed to be different among individual from different broodstocks and is suggested related to their genetic constituent.  This research aims to analyze the resistance of sowang gouramy seeds from different broodstocks and describe genetic character of seeds from different broodstocks. An explorative survey was perfomed. One hundred individuals were taken purposively from Balai Benih Ikan Sikamaju Ciamis West Java and hundred individuals were bought from fish farmer in Ciamis West Java. Sampling was performed in 2015 for the first seed group and in 2016 for the second seed group. Samples were subjected to Aeromonas hydrophila and Pseudomonas aeruginosa infection. The fragments of MHC gene were amplified using PCR technique from eight individual of first group and six individuals of second group. The resistance characteristic was analyzed using simple mathematics based on the number of living seeds compared total infected seeds and molecular characteristics was analyzed descriptively based on DNA band pattern. Different resistance to A. hydrophila was observed between seed groups from different broodstocks. The seeds group from the first broodstocks showed lower resistance level with the value of 29% than that from the second broodstocks with the resistance value reached of 100%. Both seed groups also showed resistance differences to P.aeruginosa, although  not as high as A.hydrophila infection. The differencies were also reflected in their MHC gene between seed groups from two different broodstocks. The amplication of MHC gene of the seeds from the first broodstacks resulted of 585 bp and 400 bp length fragments, while from those second broodstocks was only resulted of 400 bp frament. The differences on DNA band pattern between seed groups indicate a different molecular characteristics among seeds from different broodstocks.Usaha budidaya ikan gurami terhambat oleh tingginya mortalitas benih karena rendahnya resistensi terhadap penyakit. Resistensi merupakan sifat yang diwariskan dari tetua ke anakan. Benih yang resisten dapat diseleksimenggunakan marka molekuler seperti gen Major Histocompatibility complex (MHC). Sifat resisten diduga berbeda diantara benih yang beraasal dari induk berbeda dan diduga terkait dengan kompenen genetik yang dimiliki. Tujuan penelitian ini adalah untuk mengetahui sifat reisten dan karakter molekuler benih gurami sowang asal induk berbeda. Fragmen gen MHC diamplifikasimenggunakan teknik PCR. Sifat resistensi dianalisis menggunakan perhitungan matematika sederhana berdasarkan jumlah benih hidup dibagi jumlah total benih yang diinfeksi, sedangkan karakter molekuler dianalisis secara deskritif berdasakan pola pita yang dihasilkan. Kedua kelompok benih memiliki sifat resistensi berbeda terhadap Aeromonas hydrophila. Benih dari induk pertama memiliki sifat resistensi lebih rendah dengan nilai kelangsungan hidup sebesar 29% daripada kelompok benih dari induk kedua yang memiliki kelangsungan hidup mencapai 100%. Kedua kelompok benih juga memperlihatkan perbedaan sifat resisten terhadap P. aeruginosa, meskipun perbedaannya tidak sebesar terhadap A.hydrophila. Perbedaan tersebut juga tercermin pada gen MHC kedua kelompok benih. Pada kelompok benih pertama dihasilkan dua fragmen gen MHC dengan ukuran 585 pb dan 400 pb, sedangkan dari kelompok benih kedua hanya dihasilkan fragmen berukeuran 400 pb. Perbedaan pola pita diantara kedua kelompok benih tersebut merupakan idikasi adanya perbedaan karakter molekuler pada benih yang berasal dari dua induk berbeda
The methodological analysis of sediment phosphate research on the coast of Indonesia: a short review Amri Adnan; Muhammad Irham; Muhammad Rusdi; Ichsan Setiawan; Sayed Abdul Azis
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.021 KB) | DOI: 10.13170/depik.11.1.21604

Abstract

The Atomic Absorption Spectrophotometer method (AAS) and UV-Vis Spectrophotometer method are often used in analyzing elements and compounds in water and sediment. The comparative method of AAS and UV-Vis analysis in sediments in this article is studied to see the accuracy of the equipment used and the efficiency of the resulting analysis. Analysis of the comparative method of phosphate analysis in coastal sediments shows differences and similarities in the use of the two instruments used even though the methods used based on the results of the review do not show significant differences. Methodologically, various types of methods can be carried out to analyze coastal sediment phosphates. The UV-Vis spectrophotometric method is generally more widely used than the AAS method. For a small number of sediment samples, the ASS method is more efficient than the UV-Vis method; however, UV-Vis is more accurate for dissolved samples because less phosphate is released when identified than the AAS method. Based on this, the AAS method is more effective in analyzing phosphate sediments in coastal areas than the UV-Vis method, but the UV-Vis method for wet samples is more accurate.Keywords:Coastal SedimentPhosphateSpectrophotometerUV-VisAAS

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