Samakia Jurnal Ilmu Perikanan

Published by LP2M Universitas Ibrahimy
Online ISSN: 2086-3861
Publications
Article
Abalon memiliki cita rasa yang khas, mengandung 71,99% protein; 3,2% lemak; 5,6% serat kasar; dan 0,6% air. Harga jual di pasar domestik berkisar antara Rp 250.000-Rp 600.000 per kg tergantung ukuran dan di pasar internasional berkisar antara USD 22-USD 66 per kg tergantung kualitas dan jenisnya. Kegiatan pembenihan dimulai dengan pemeliharaan induk sampai gonad matang. Induk ditempatkan di dalam peti plastik dengan kepadatan 40-50 ekor/unit dan diberi pakan makroalga. Gonad induk yang telah siap dipijahkan berkembang dan menutupi organ hepatopankreas lebih dari 50%, dan pemijahan dilakukan di wadah pemijahan. Pemeliharaan larva dilakukan di dalam wadah yang sebelumnya telah dikultur diatom bentik sebagai pakan larva. Abalon berukuran 1-2 cm dipanen dan dipindahkan ke wadah pemeliharaan benih. Pemeliharaan benih dilakukan selama 2-3 bulan dan menghasilkan benih abalon yang siap dijual dengan ukuran 3cm. Kegiatan pembenihan menghasilkan FR 60%, HR 85%, dan SR 0,1-1%. Pengemasan benih dilakukan melalui tiga tahap, yaitu kantong jaring dengan kerapatan 75-100 ekor/kantong, kantong plastik berisi 20 kantong jaring/kantong plastik, dan boks styrofoam berisi 1 plastik/boks styrofoam.
 
Article
The Kutaraja Ocean Fisheries Port (PPS) located in Banda Aceh City is central to the fisheries sector in Aceh Province. Various types of fish have been landed at Kutaraja PPS, one of which is tuna/madidihang (yellowfin tuna). Tuna is not only in demand by the local market, but also international markets, especially Japan and America. This study aims to estimate the amount of tuna/madidihang (yellowfin tuna) production landed at Kutaraja PPS in 2018 and 2019. These estimates can help the Aceh Government in controlling the ordering of tuna/madidihang (yellowfin tuna) from within and outside the country, so that the number of tuna/madidihang (yellowfin tuna) caught and ordered can be balanced so that stock control can run well. The forecasting method used in this study is the Triple Exponential Smoothing method by using monthly data on the amount of tuna/madidihang (yellowfin tuna) production landed at Kutaraja PPS from January 2010 to December 2017. Based on the results of forecasting with the best models, the amount of tuna/madidihang (yellowfin tuna) production will landed in the Kutaraja PPS in 2018 and 2019 are predicted to be 2,395,615.8 Kg and 2,451,207.5 Kg respectively.
 
Article
Intensive shrimp farms need mangroves to increase the carrying capacity of their waters. Every 1 Ha of intensive shrimp pond requires 7.2 Ha mangrove to absorb nitrogen (N) and 21,7 Ha to absorb phosphor (P) from waste water disposal. This study was conducted to estimate the extent of lmangrove required to absorb nitrogen (N) and phosphorus (P) wastes removed from intensive shrimp farming in Banyuputih Subdistrict of Situbondo Regency. From the field survey results obtained data on the area of productive intensive ponds in the District Banyuputih is 39 Ha. The result of data analysis indicate that 280,3 Ha mangrove is needed to support the absorption of nitrogen (N) and 846,3 Ha mangrove to absorb phosphorus (P) of effectiveness pond waste pond in the study area. The mangrove in this subdistrict of Banyuputih (540,18 Ha) still support in the absorption of nitrogen waste (N), but for the absorption of phosphorus posfor (P) ponds still needed reforestation of at least 304,12 Ha from the existing mangrove area. If the local government intends to develop intensive shrimp ponds in accordance with the carrying capacity or maximum capacity of coastal waters of Banyuputih in decomposing 58 ha of tambak organic ponds, the current mangrove condition (540.18 Ha) still supports the absorption of nitrogen (N) from ponds intensively covering an area of 58 Ha, but to absorb the posfor (P) lagoon is still needed addition (reforestation) of 718.42 Ha.
 
Article
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 LC50-96 hours Cd2+ on test biota. The test biota was Gambusia fish (Gambusia affinis), the test biota can represented the actual state of the environment. The study was divided into two stages, namely preliminary test and acute lethal toxicity (LC50-96 hours), each treatment repeated three times. Acute lethal toxicity test data were analyzed probit. The results showed that the value of LC50-96 hours Cd2+ to fish gambusia was 0.03 ppm. While in the protease activity of cadmium exposed preliminary fish increased activity from the control fish.
 
Article
The aim of study to determine the environmental quality, content and distribution of heavy metals in the waters of the Wangi River, Beji Sub-District, Pasuruan Regency in relation to the interests of environmental conservation around the river. Method of sampling doned by chosen, taking into account the condition of research area, current and depth of research area.The intended to see to what extent pollutant concentrations are spreading. Observation of water quality during research in different seasons of the rainy season (October 2016 to February 2017) and dry season (March to September 2017). Based on the results of environmental quality testing and heavy metals can be concluded that the environmental quality at the Wangi river flow is already at the threshold, so that the required waste prevention and environmental conservation activities. This should get great attention from the public in general and the local government in particular. The hope for the future is pollution of the Wangi River can be avoided and overcome.
 
Article
Water quality parameters play an important role in intensive pond ecosystems. The purpose of this study was to determine the relationship between of water quality parameters in intensive shrimp farming of L. vannamei. This research was carried out for 95 days of intensive shrimp farming in PT. Menjangan Mas Nusantara Company, Banten, with the physical, chemical, and microbiological parameters of water as the main reference object of observation. The results showed that during the shrimp culture period the pond water quality parameter concentration was considered to be quite optimal with a stable fluctuation trend, except for the salinity and TOM parameters whose values were above the water quality standard. Correlation test results state that between the physical chemical parameters have a strong and heterogeneous relationship, with the strongest parameters of pH, phosphate, nitrite, and TOM. As for the microbiological variables, the correlation of physical chemistry parameters of water is considered to be very weak, because from the correlation test results, only DO parameters showed the correlation with microbiological parameters. The conclusion of this study, that during intensive shrimp culture period, the physical and chemical parameters of water have a strong correlation of association between one another and the highest are pH, phosphate, nitrite, and TOM, but only dissolved oxygen parameters that show the relationship correlation with microbiological parameters.
 
Article
Budidaya rumput laut adalah salah satu sub-kegiatan akuakultur yang sangat potensial untuk dikembangkan di Kecamatan Banyuputih, Situbondo. Tujuan dari penelitian ini adalah untuk memetakan kesesuaian lahan budidaya di Kecamatan Banyuputih Situbondo guna dapat digunakan sebagai area budidaya rumput laut berdasarkan nilai indikator parameter kimia air yang ada. Penelitian ini dilaksanakan di perairan pesisir Kecamatan Banyuputih, Situbondo selama bulan januari-maret 2019 dengan konsep penelitian lapang dan analisa spasial dari pengambilan data kimia air (oksigen terlarut, fosfat, dan nitrat) yang kemudian dianalisis menggunakan metode Inverse Distance Weighting (IDW) dan overlay pada aplikasi GIS (Geographic Information System) guna mendapatkan model visualisasi peta tematik kesesuaian lahan. Hasil penelitian menunjukan parameter oksigen terlarut, fosfat, serta nitrat berfluktuasi secara variatif dan dinamis selama masa penelitian berlangsung, dengan kisaran konsentrasi 5.4-6.1 mg/L (DO), 0.8-1.6 mg/L (PO4), dan 2.1-3.7 mg/L (NO3). Kondisi tersebut, menandakan bahwa perairan pesisir Kecamatan Banyuputih cenderung subur dan layak untuk digunakan sebagai lahan budidaya akuakultur. Pernyataan tersebut juga bisa dilihat dari hasil visualisasi warna pada gambar kesesuaian lahan di peta tematik peneltian. Nilai konsentrasi dari parameter DO (5.4-6.1 mg/L), fosfat (0.8-1.6 mg/L), dan nitrat (2.1-3.7 mg/L) di perairan Kecamatan Banyuputih juga masih sesuai dengan ambang batas baku mutu kualitas air yang diperuntukan untuk budidaya rumput laut. Sehingga dari penelitian ini dapat disimpulkan, dari berbagai gambar peta tematik hasil analisis spasial berdasarkan indeks parameter kimia air yang ada, lokasi perairan Kecamatan Banyuputih sangat layak dan potensial untuk dikembangkan sebagai area budidaya rumput laut yang produktif.
 
Article
Salah satu komoditas ikan hias air tawar yang menjadi primadona di pasar internasional adalah Ikan Koi (Cyprinus carpio). Budidaya Ikan Koi akan menjadi daya tarik usaha karena permintaan pasar yang tinggi. Pemijahan semi buatan mempunyai keunggulan karena diawali dengan seleksi induk yang matang gonad sempurna sehingga mendapatkan kualitas benih yang baik. Pelaksanaan observasi partisipan selama satu bulan di Balai Perikanan Budidaya Air Tawar (BPBAT) Mandiangin. Kegiatan ini bertujuan mengetahui penerapan teknologi pembenihan Ikan Koi. Prosedur pengerjaan terdiri pemeliharaan induk, seleksi induk, proses pemijahan, pemeliharaan benih, dan pendederan benih Ikan Koi. Pembenihan Ikan Koi (Cyprinus carpio) di Balai Perikanan Budidaya Air Tawar (BPBAT) Mandiangin menghasilkan larva sebanyak 26.000 ekor Ikan Koi. Kualitas air berdasarkan SNI dikategorikan layak dengan suhu pada kisaran 27-30oC, pH 6,9-7,28, dan DO 6,2-7,6 mg/L .
 
Article
The water quality analysis activities carried out by smallholder farmers with the construction of cement walls and cement pond bases on the Konang beach, Panggul District, Trenggalek Regency, have not met the standard standards in the analysis of pond water quality. Pond farmers only analyze the pH, brightness and temperature of the pond water. The research objective was to obtain information and describe the analysis of water quality in the community pond construction of cement walls and the bottom of cement ponds at Konang beach, Panggul District, Trenggalek Regency. The activity of analyzing the water quality of the community plots of construction of cement walls and the bottom of the cement ponds on the Konang beach, Panggul District, Trenggalek Regency, was observed in the form of temperature, brightness and pH, with a pond area of 250 m2. Water quality observation activities for 30 days, in one day water quality observations are made twice, namely in the morning and evening. The pH measurement results were obtained, ranging from 7.4 to 8.5, so that the results of measuring the pH of the water in the people's ponds in Koneng Beach were still normal or normal. According to Boyd (2001) in Andi S and Sahabuddin (2014), it is said that water organisms (fish or shrimp) require a pH range of 6.8 - 8.5. the results of measuring the brightness with a simple tool, the measurement results are between 25-40 cm. Badrudin et al (2014) stated that the optimum brightness level of pond water which is influenced by plankton density is around 20 - 40 cm. So that the level of brightness can be concluded that it is still in rational or optimal. The temperature in the ponds was 24 ᴼC - 28 ᴼC, still within normal or optimal. According to Supito (2017), the pond temperature in the range of 28 ᴼ C to 32 ᴼ C is the optimal temperature forcultivating vaname shrimp.
 
Article
Caulerpa racemosa merupakan salah satu jenis rumput laut yang memiliki prospek cerah untuk dikembangkan. Salah satu hal yang penting untuk diperhatikan dalam membudidayakan C. racemosa adalah kualitas air. Sehubungan dengan hal tersebut, diperlukan kajian terkait kualitas air pada tambak budidaya anggur laut selama masa pemeliharaan sebagai upaya untuk mengoptimalkan pertumbuhan anggur laut dan meminimalkan terjadinya kegagalan dalam usaha budidayanya. Penelitian ini menggunakan metode survei, data primer dikumpulkan melalui observasi, dokumentasi, wawancara serta partisipasi langsung dalam kegiatan budidaya anggur laut (C. racemosa) di Balai Besar Perikanan Budidaya Air Payau (BBPBAP) Jepara, sedangkan data sekunder dikumpulkan melalui studi pustaka. Pengukuran kualitas air yang diukur selama masa pemeliharaan juga menunjukkan kondisi yang optimal bagi pemeliharaan anggur laut, hanya saja kadar nitrat terdeteksi dalam jumlah yang sangat kecil, namun hal ini tidak berpengaruh terhadap pertumbuhan C. racemosa. Hasil penelitian menunjukkan dengan suhu (30 - 31oC), DO (3.60 – 4.60 mg/L), pH (8.3 – 8.5), salinitas (39 – 40 ppt), NO3 (0 mg/L), PO4 (0,002 - 0,018mg/L). Laju pertumbuhan relatif pada anggur laut dengan metode sebar dasar didapatkan hasil 5 gr/hari. Untuk mengatasi kadar nitrat yang rendah, dalam masa pemeliharaan dapat dilakukan kegiatan pemupukan susulan dan peningkatan monitoring kualitas air agar menghasilkan anggur laut yang berkualitas dan mampu memaksimalkan produksi anggur laut.
 
Article
Rumput laut merupakan komoditas yang banyak dibudidayakan pada perairan pesisir. Tujuan dari penelitian ini adalah untuk mepetakan tingkat kesesuaian parameter fisika air bagi kegiatan budidaya rumput laut Eucheuma cottoni di Kecamatan Banyuputih Kabupaten Situbondo. Penelitian ini dilakukan pada bulan januari-maret 2019 dengan konsep penelitian lapang dan analisa spasial dari data parameter suhu, salinitas, arus, kecerahan, dan kedalaman perairan yang kemudian dianalisis menggunakan metode Inverse Distance Weighting (IDW) dan overlay pada aplikasi GIS (Geographic Information System) untuk membuat model visualisasi peta tematik kesesuaian lahan. Hasil penelitian menunjukkan seluruh paremeter fisika masih layak untuk kegiatan budidaya rumput laut. Parameter suhu dan salinitas berfluktuasi secara dinamis dengan nilai suhu 27.2±1.3-28.0±1.5 dan salinitas 29.0±0.7-30.1±0.6. Sedangkan parameter arus, kecerahan, dan kedalaman perairan berfluktuasi stabil dengan nilai untuk parameter arus 17.2±1.1-37.0±2.2, kecerahan 4.9±0.5-6.6±0.2, dan kedalaman 6.8±0.3-10.9±0.2. Seluruh parameter perairan dideskripsikan dalam tampilan peta tematis untuk kelayakan lahan berbasis data sistem informasi geografis. Sehingga adapun kesimpulan dari penelitian ini, berdasarkan kondisi parameter fisika air (salinitas, suhu, arus, kecerahan, dan kedalaman perairan), kondisi perairan di wilayah pesisir Kecamatan Banyuputih sangat layak untuk digunakan sebagai tempat budidaya rumput laut Eucheuma cottoni yang digambarkan melalui deskripsi gambar peta tematik.
 
Article
Tujuan dari penelitian ini adalah untuk mengetahui efek sistem akuaponik terhadap normalisasi kualitas air budidaya lele organik, tingkat survival rate ikan Lele serta pertumbuhan tanaman Kangkung pada sistem akuaponik. Metode penelitian yang akan dilakukan adalah metode eksperimen dengan menggunakan rancangan acak lengkap (RAL) dengan padat tebar berbeda yaitu P1 (100 ekor/m2), P2 (250 ekor/m2), dan P3 (500 ekor/m2). Parameter yang diukur adalah kualitas air media budidaya ikan Lele meliputi NH3, NO2, NO3, pH, dan Oksigen terlarut, serta tingkat kelulushidupan ikan Lele dan pertumbuhan tanaman Kangkung (tinggi tanaman, jumlah daun, dan lebar daun). Hasil penelitian menunjukkan pemeliharaan ikan lele dengan sistem akuaponik dengan tanaman Kangkung dapat menstabilkan kualitas air. Nilai kualitas air NH3 (0 – 0.1 ppm), NO2 (0 – 0.881 ppm), NO3 (0 – 1.443 ppm), pH (6 – 7.8), dan oksigen terlarut (4.5 – 6.2 ppm). Nilai survival rate P1 (95.2%), P2 (94.3%), P3 (89.6%). Pertumbuhan tanaman Kangkung terbaik didapatkan pada perlakuan P3 yaitu tinggi tanaman 37.2 cm, lebar daun 2.5 cm, dan jumlah daun 24 helai. Hasil penelitian menunjukkan kualitas air relative stabil. Semakin tinggi pada tebar semakin rendah tingkat survival rate ikan Lele, disisi lain semakin tinggi padat tebar semakin bagus pertumbuhan tanaman Kangkung.
 
Article
Beta karoten merupakan salah satu jenis karatenoid yang penting bagi kesehatan dan pertumbuhan ikan. Penelitian ini bertujuan untuk mengetahui dampak penggunaan beta karoten alami dalam bentuk tepung wortel, tepung ubi jalar dan tepung kepala udang terhadap performa laju pertumbuhan panjang mutlak, berat mutlak dan kelangsungan hidup ikan maru. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan tiga pengulangan yaitu perlakuan A (penambahan pakan dengan bahan baku tepung wortel); perlakuan B (penambahan pakan dengan bahan baku tepung ubi jalar); perlakuan C (penambahan pakan dengan bahan baku tepung kepala udang), dan perlakuan K (penambahan pakan pellet komersil). Hasil penelitian menunjukkan bahwa penambahan bahan baku pakan dengan bahan alami yang mengandung beta karoten dapat memengaruhi laju pertumbuhan baik itu laju pertumbuhan panjang mutlak maupun bobot mutlak selama 90 hari pemeliharaan dimana perlakuan penambahan tepung kepala udang dapat meningkatkan laju pertumbuhan panjang mutlak, dan pertumbuhan bobot mutlak dibandingkan dengan perlakuan yang menggunakan tambahan tepung wortel dan tepung ubi pada pakan ikan. Sementara, perbedaan sumber beta karoten pada pakan tidak berbeda nyata dan tidak memengaruhi tingkat kelangsungan hidup pada pemeliharaan ikan maru.
 
Article
Tujuan dari penelitian ini adalah untuk mengetahui pengaruh ekstrak daun salam sebagai pengawet alami pada ikan bandeng di tambak Sidoarjo. Parameter pada penelitian ini adalah organoleptik, pH dan total koloni bakteri pada ikan bandeng. Rancangan percobaan yang digunakan adalah rancangan acak lengkap dengan 5 perlakuan dengan jumlah ulangan sebanyak 5 kali. Kelompok perlakuan P0 (tanpa perlakuan) sebagai kontrol, P1 (ekstrak daun salam 5%), P2 (ekstrak daun salam 10%), P3 (ekstrak daun salam 15%) dan P4 (ekstrak daun salam 20%). Hasil analisis statistik uji Total Koloni Bakteri serta uji pH menunjukkan perbedaan yang nyata (p<0,05), begitu pula dengan hasil analisis statistik uji organoleptik yang menunjukkan perbedaan nyata tiap perlakuan. Berdasarkan hasil data yang ada, disimpulkan bahwa terdapat pengaruh ekstrak daun salam sebagai pengawet alami pada ikan bandeng terutama pada konsentrasi daun salam sebesar 20%.
 
Article
The research was conducted in June-July 2020 at Sambaliung Fish Landing Base (PPI), Berau Regency, East Kalimantan Province. The purpose of this study was to identify safety equipment on purse seine ships at PPI Sambaliung. The method used is case study method by collecting data using observation method directly at KM Piposs Berau with systematic observation and recording of investigated phenomena and structured interviews. Analysis in this study was conducted using descriptive analysis of observation and interview results. The results of this study showed that the safety equipment on board KM Piposs Berau consists of 5 categories, namely: 1) Ship safety equipment: sea map, compass, GPS, radio, echosounder, bucket with rope, and strap to the ship, 2) Individual safety equipment: life jacket, life buoy, 3) Drug equipment (first aid), 4) Personal protective equipment: gloves, raincoats, 5) Work equipment: power blocks, rollers, joy stands, wheel, tools and workshop tools, as well as the thematic ropes.
 
Article
Salah satu sertifikasi ekolabel untuk industri pengolahan udang adalah Best Aquaculture Practices dari Global Aquaculture Alliance (GAA-BAP). Indonesia sebagai salah satu produsen udang terbesar dunia, maka berkepentingan dalam penerapan ekolabel GAA-BAP melalui dukungan regulasi dan mendorong perbaikan penerapan ekolabel yang lebih baik di industri pengolahan udang. Penelitian ini bertujuan untuk mengkaji regulasi yang mendukung penerapan ekolabel GAA-BAP dan menganalisis kondisi aktual dalam memenuhi persyaratan ekolabel GAA-BAP. Metode penelitian yang digunakan yaitu metode deskriptif dengan studi kasus pada industri pengolahan udang beku yaitu PT. XYZ Sidoarjo. Metode analisis dalam mengkaji regulasi ekolabel GAA-BAP adalah metode yuridis empiris. Sedangkan metode analisis kondisi aktual dengan cara penilaian kesesuaian di lokasi studi kasus dibandingkan sub-sub klausul standar persyaratan ekolabel GAA-BAP serta penyusunan rekomendasi perbaikan. Hasil yang didapat dari penelitian adalah industri pengolahan udang sudah mematuhi dan menjalankan regulasi yang berlaku di Indonesia dan regulasi internasional khususnya negara-negara tujuan ekspor. Hasil penilaian kesesuaian menunjukkan bahwa PT. XYZ sudah memenuhi 100% sub klausul kepemilikan hak, 100% sub klausul sistem manajemen mutu, 75% sub klausul manajemen karyawan, 100% sub klausul manajemen limbah dan lingkungan, 93% sub klausul manajemen keamanan pangan, 90% sub klausul manajemen verifikasi, 100% sub klausul sistem ketertelusuran, dan 96% sudah memenuhi persyaratan tambahan. Rekomendasi perbaikan yang harus dilakukan adalah peningkatan pengawasan fasilitas keselamatan kerja karyawan, melaksanakan program pelatihan penanganan bahan kimia berbahaya, mengimplementasikan prosedur ketahanan pangan, melaksanakan pengujian internal sesuai persyaratan GAA-BAP secara rutin, melakukan audit internal yang mencakup audit sosial dan lingkungan, serta menjamin instalasi limbah dalam kondisi baik untuk operasional.
 
Article
Waduk Palasari merupakan perairan umum yang potensial dan dapat dikembangkan untuk menghasilkan ikan bandeng ukuran konsumsi di perairan tawar. Tujuan dari penelitian ini adalah untuk mengetahui ukuran yang tepat terhadap pertumbuhan dan kelulushidupan ikan bandeng pada keigatan pendederan di keramba jaring apung di Waduk Palasari. Penelitian ini menggunakan dua kelompok hewan uji, yang pertama benih bandeng dari hatchery di Gondol, Buleleng, Bali dengan ukuran 1,2 - 1,5 cm (Kelompok A) dan benih bandeng dari tambak Gresik, Jawa Timur dengan ukuran 3,5 – 4 cm (Kelompok B). Masing-masing kelompok di pelihara pada Keramba Jaring Apung dengan ukuran 3 x 3 x 3 m. Kepadatan untuk kelompok A adalah 5000 ekor/ jaring dan kelompok B sebayak 1000 ekor/ jaring, dengan masing-masing kelompok memiliki tiga kali ulangan. Laju pertumbuhan kelompok A sebesar 4,19% dengan kelulusan hidup 62,70 % ±5,16, sedangka pada kelompok B laju pertumbuhan sebesar 18,13% denan kelulusan hidup sebesar 70,65 % ±3,18. Ukuran tebar benih bandeng kelompok B menghasilkan laju pertumbuhan dan kelulusan hidup yang lebih tinggi dibadingkan dengan benih bandeng kelompok A.
 
Article
Cluster Kolono Konawe South, Southeast Sulawesi Province is an area that has the potential of the sea to be developed by seaweed cultivation activities Kappahycus alvarezii, with the benefit of creating regional economic improvement. So far, the development of commercial seaweed cultivation is still lacking so that people's income and local revenue are not optimal. One of the causes is the absence of strategic planning and policy in the development of seaweed cultivation. As a first step, it is necessary to determine the priorities for the development of cultivation K. alvarezii in the Kolono cluster area. The method applied in collecting research data is observation, interviews, and questionnaires. Policy priority scale analysis is determined by the Analytical Hierarchy Process (PHA). The results of the study showed that the cultivation activities of K. alvarezii in the Kolono cluster area, South Konawe District required improvements in several factors, namely the availability of human resources, improvement of the capital system, and the detection of an appropriate aquatic environment. To maintain/sustain the aquaculture business K. alvarezii, some strategic policies are needed. The practical alternative policy that can be done in the short term by the South Konawe District government in the Klater Kolono area is to conduct training and demonstration of cultivation K. alvarezii which includes cultivation design, site selection, planter preparation, seed preparation, maintenance, harvest and post-harvest techniques, processes sales and profit value and capital flow.
 
Article
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.
 
Article
Tujuan penelitian ini adalah mendeskripsikan dan menganalisis kelayakan usaha penangkapan kepiting bakau (Scylla sp.) dengan menggunakan alat tangkap bubu lipat di perairan Kelurahan Kandang, Kecamatan Kampung Melayu, Kota Bengkulu. Penelitian dilaksanakan selama 1 bulan pada bulan September 2020. Penelitian ini dilakukan dengan menggunakan metode survei. Responden penelitian terdiri dari 13 orang nelayan usaha penangkapan kepiting bakau yang menggunakan bubu lipat di perairan Kelurahan Kandang. Metode analisis data pada penelitian ini adalah metode deskriptif. Bubu lipat yang digunakan oleh nelayan berukuran panjang 45 cm, lebar 20 cm, dan tinggi 15 cm. Perahu motor tempel yang digunakan nelayan berukuran panjang 4,3 m, lebar 1,1 m, tinggi 0,6 m. Hasil perhitungan gross tonnage perahu motor tempel yaitu 0,63 GT. Mesin yang digunakan berkekuatan 5,5 PK – 6,5 PK dengan merek mesin diantaranya Honda, Nixon, Bion, Proquip dan Pujiama. Daerah penangkapan kepiting bakau di perairan Kelurahan Kandang berada di sekitar perairan hutan mangrove dengan dasar perairan berupa lumpur berpasir, dengan jarak dari base fishing yaitu 2-3 km. Hasil tangkapan utama bubu lipat adalah kepiting bakau (Scylla sp.). Analisis kelayakan usaha penangkapan kepiting bakau dengan menggunakan alat tangkap bubu lipat di perairan Kelurahan Kandang, Kecamatan Kampung Melayu, Kota Bengkulu dinyatakan layak dengan hasil NPV = Rp 2.097.872, Net B/C Ratio = 1,02, IRR = 27% menggunakan tingkat suku bunga deposito Bank BRI 12% dan PP = 2,61 tahun atau 2 tahun 6 bulan 1 hari.
 
Article
Kawasan hutan mangrove memiliki keanekaragaman hayati dan biota yang beragam, kawasan ini potensial dikembangkan sebagai kawasan ekowisata bahari. Tujuan penelitian ini untuk mengetahui indeks kesesuaian wisata, daya dukung kawasan, dan daya dukung pemanfaatan ekowisata mangrove di Desa Taddan Kecamatan Camplong Kabupaten Sampang. Metode pengambilan data mangrove menggunakan transek garis dan plot (Line Transect Plot). Hasil penelitian mendapatkan jenis mangrove di lokasi penelitian adalah Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Sonneratia alba, Avicennia marina, dan Aegiceras cornitulatum. Kesesuaian kawasan untuk dimanfaatkan sebagai kawasan ekowisata bahari kategori mangrove untuk semua stasiun pada kondisi sesuai bersyarat. Daya dukung kawasan menunjukkan hasil kemampuan suatu kawasan dalam menyediakan ruang bagi pemanfaatan sebanyak 199 orang per hari, sedangkan untuk per trip sebanyak 25 orang per trip. Daya dukung pemanfaatan dengan mempertimbangkan persentase kawasan untuk konservasi sebesar 10% maka diperoleh hasil sebanyak 20 orang per hari
 
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Keberlanjutan kegiatan budidaya udang vannamei ditentukan oleh tingkat kesuburan lahan tambak. Kesuburan lahan tambak dapat identifikasi berdasarkan kriteria-kriteria kesesuaian lahan tambak budidaya udang vannamei. Penelitian dilakukan di pesisir Teluk Cempi dengan mengumpulkan data kriteria kesesuaian lahan yang diamati seperti kriteria biogeofisik dan kualitas tanah untuk dianalisis menggunakan metode analisis spasial multi kriteria dan Analytical Hierarcy Process (AHP). Penelitian bertujuan mengetahui kesesuaian lahan berdasarkankriteria biogeofisik dan kualitas tanah tambak budidaya. Analisis multi kriteria menggunakan metode interpolasi inverse Distance Weighted (IDW) dan overlay, sedangkan AHP menggunakan teknik perbandingan berpasangan. Hasil analisis overlay kesesuaian lahan tambak didapatkan 4 kelas kesesuaian lahan, perhitungan skala banding AHP, diperoleh bobot kriteria biogeofisik 40% dan kualitas tanah 60%. Hasil analisis spasial kesesuaian diperoleh bahwa total luasan lahan tambak budidaya udang vannamei di pesisir Teluk Cempi seluas 2735,63 Ha. Luas lahan yang sangat sesuai adalah 307,74 Ha (skor 2252), luas lahan yang sesuai 1222,27 Ha (skor 8911), luas lahan yang cukup sesuai 961,92 Ha (skor 6588) dan luas lahan yang tidak sesuai adalah 243,70 Ha (skor 1786).
 
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The purpose of this study was to analyze the business feasibility of the dried scad mackerel (Decapterus spp.) processing At UD. Mutiara Laut. This research uses the case study method and was conducted in February 2020. The data collection method uses observation and interviews with business owners. The data used are primary and secondary data. The results showed that the profits of the dried scad mackerel processing at UD. Mutiara Laut in one month amounting to IDR 63,887,479. R / C ratio of 1.08. This means that the dried scad mackerel processing at UD. Mutiara Laut is profitable and feasible to be developed.
 
Article
Udang merupakan salah satu komoditas subsektor perikanan utama dalam ekspor Indonesia. Penelitian ini bertujuan untuk: (1) membandingkan keuntungan usaha udang vaname dengan sistem intensif dan konvensional, (2) mengidentifikasi kelayakan finansial usaha udang vaname. Penelitian ini menggunakan pendekatan deskriptif, komparatif dan kuantitatif. Lokasi penelitian berada di Kabupaten Situbondo. Pendekatan analisis yang digunakan adalah perbandingan laba dan analisis keuangan. Temuan penelitian ini antara lain: (1) terdapat perbedaan tingkat keuntungan budidaya udang vaname berdasarkan sistem tambak yang digunakan, sistem intensif lebih menguntungkan daripada sistem non-intensif, 2) usaha udang vaname secara finansial bisa dilakukan; NPV sistem intensif positif (=Rp 64.980.480.855); B/C Bruto (= 8,9) > 1; B/C Bersih (= 15,09) > 1; IRR (= 45,76%/bulan) > i dengan payback period 3,4 bulan sejak seedling. NPV sistem konvensional (=Rp 611.389.120); B/C Bruto (= 2,43) > 1; B/C Bersih (= 2,78) > 1; IRR (= 42,86%/bulan) > i dengan payback period 3,5 bulan sejak seeding.
 
Article
Tujuan penelitian ini adalah untuk mengetahui potensi ekologis serta analisis kesesuaian dan daya dukung kawasan perairan Pulau Soreh untuk ekowisata diving. Metode penelitian yang digunakan adalah metode survei dengan teknik pengambilan sampel secara purposive sampling yang terdiri dari 2 stasiun. Pengambilan data karang mengunakan metode PIT (Point Intersept Transect), data ikan menggunakan metode UVC (Underwater Visual Census), data kecerahan mengggunakan secchi disc, data kecepatan arus menggunakan botol berisi air dan dikat dengan tali berukuran yang sudah ditentukan, data kedalaman menggunakan bandul atau pemberat dengan tali yang sudah ditentukan ukurannya dan data sosial dengan metode wawancara. Berdasarkan hasil pengamatan potensi tutupan karang hidup sebesar 1–70 %, kecerahan perairan memiliki kecerahan berkisar 47,2-100%, jumlah jenis life form karang sebanyak 1-13 jenis, jenis ikan karang sekitar 4-14 jenis, kecepatan arus sebesar 10,82-13,36 cm/detik, kedalaman terumbu karang sekitar 3,50-10 meter, aksesibilitas sebanyak 1 aspek, dan biota berbahaya sebanyak 1 jenis. Kesesuaian wisata diving di Perairan P. Soreh pada setiap stasiun merupakan kawasan yang sesuai untuk dilakukan pengembangan ekowisata diving. Daya dukung terumbu karang untuk pengembangan ekowisata diving di Perairan P. Soreh pada setiap stasiun sesuai untuk dilakukan pengembangan wisata diving.
 
Article
Penelitian ini bertujuan untuk menganalisis kualitas dan korelasi antara sejumlah parameter kualitas perairan di kolong pascatambang timah dengan umur berbeda untuk pengembangan akuakultur. Pengukuran kualitas air dilakukan pada kolong berumur < 1 tahun, umur 20-25 tahun, dan umur > 50 tahun. Hasil penelitian menunjukkan bahwa kolong berumur < 1 tahun bersifat asam (pH 3,71) dengan Eh 0.16 V, DO 5.20 ppm, COD 10.173 ppm, TSS 3.667 ppm, konduktivitas143.75 Us.cm-1, total nitrogen 0.069 ppm, dan total fosfat 0.019 ppm. Karaktersitik perairan kolong berumur > 20 tahun mengalami perbaikan kualitas, khususnya pH dan DO. Hasil pengukuran menunjukkan pH 6.98-7.09, DO 7.07-7.20 ppm, COD 13.900-15.400 ppm, TDS 38.93-81.63 ppm, TSS 6.00 ppm, Eh 0.01-0.02 V, konduktivitas 58.40-122.45 Us.cm-1, total nitrogen 0.021-0.041 ppm, dan total fosfat 0.013-0.021 ppm. Kualitas perairan di kolong pascatambang timah, khususnya di kolong berumur < 1 tahun cenderung berkualitas rendah, meskipun demikian sejumlah ikan ditemukan mampu hidup di kolong tersebut seperti ikan gabus (Channa sp.), sepat rawa (‎Trichogaster sp.), kemuring (Puntius sp.), nila (Oreochromis sp.), tempala (Betta sp.), merak atau cere (Gambusia sp.), seluang (Rasbora sp.), betok (Anabas sp.), selinca (Belontia sp.), berenet atau eyespot rasbora (Brevibora sp.), mata tiga (ikan padi atau javanese ricefish) (Oryzias sp.), dan kepala timah (Aplocheilus sp.). Hal ini menunjukkan bahwa beberapa spesies ikan memiliki kemampuan bertahan hidup dan adaptasi yang baik di lingkungan berkualitas rendah. Sementara itu, ikan-ikan tersebut juga ditemukan di sejumlah kolong yang berumur > 20 tahun. Hal ini menunjukkan bahwa spesies-spesies tersebut memiliki rentang kualitas perairan yang luas untuk kehidupannya serta berpotensi untuk dikembangkan sebagai komoditas akuakultur ataupun organisme suksesor di perairan kolong pascatambang timah.
 
Article
Perkembangan budidaya laut dari tahun ketahun terjadi peningkatan, usaha perikanan skala rumah tangga banyak berkembang di daerah pesisir Kabupaten Situbondo dikelola oleh pembudidaya ikan hanya atas dasar milik mereka sendiri modal dan pengalaman, tetapi tanpa mempertimbangkan keuangan aspek kelayakan bisnis dan konservasi lahan buidaya. Tujuan untuk mengetahui kelayakan usaha, volume dan nilai produksi budidaya kerapu cantang. Data primer dianalisis menggunakan analisis deskriptif dan analisis kelayakan bisnis melalui pendekatan kriteria investasi. Hasil penelitian menunjukkan bahwa Hasil yang didapatkan adalah BEP unit: 265.506.000 ekor, BEP harga : 42.657.325 / tahun, B/C Ratio: 1,30 dan Pay back period 2,1.
 
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Diseases is a problem in aquaculture, one of which is the diseases caused by the bacteriumP.fluorescens. Antibiotics and chemicals materials themselves can give the bacterium resistance and cause harm for the environment. One alternative that can be done is using a natural material, namely the rod of ciplukan (p. angulata). The purpose of this research was to explain the effect of P. angulata on the growth of p. fluorescens. The method which can be use is experimental method by using the research design of completely randomized design (ral) with 5 treatment and 2 control with 3 repetitions. The results showed that extract of P. angulata at various dose (6,67 ppt, 13,33 ppt, 19,99 ppt, 26,66 ppt and 33,33 ppt) exhibited anti-P. fluorescens activity with inhibition zone diameters in the range of (4,06±0,07 mm - 9,63±1,61 mm). Increashing extract dose lead to increased the inhibition zone. The extract dose of 33,33 ppt exhibited best anti-P. fluorescens activity in this research. The research results show that P. angulata is proven to be able to inhibit the P. fluorescens, but to prove the effectiveness of this material, an in vivo is required.
 
Article
Tujuan khusus penelitian ini adalah mendapatkan teknologi tepat guna yang dapat diterapkan dalam meningkatkan pertumbuhan dan sintasan benih ikan nila sebagai upaya memaksimalkan penggunaan biji trembesi melalui bioteknologi fermentasi menggunakan yoghurt, untuk meningkatkan produksi ikan nila secara nasional. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan masing-masing diulang 3 kali. Adapun yang di uji adalah perlakuan A (kadar tepung biji trembesi terfermentasi tanpa menggunakan yoghurt (kontrol)), B (kadar tepung biji trembesi terfermentasi yoghurt 4 ml/kg pakan), C (kadar tepung biji trembesi terfermentasi yoghurt 6 ml/kg pakan) dan D (tepung biji trembesi terfermentasi yoghurt 8 ml/kg pakan). Hasil penelitian menunjukkan bahwa fermentasi biji trembesi menggunakan yoghurt dengan dosis yang berbeda berpengaruh nyata (p<0.05) terhadap pertumbuhan dan sintasan nila. Uji lanjut menggunakan jarak berganda (Duncan) memperlihatkan adanya perbedaan antar perlakuan. Pertumbuhan tertinggi diperoleh pada perlakuan B (dosis yoghurt 4 mL/kg) sebesar 21.51gr), disusul perlakuan A (kontrol) 20.24gr, perlakuan C (dosis yoghurt 6 mL/kg) 19.57gr, dan terendah perlakuan D (8 mL/kg) 19.25gr. Sintasan tertinggi diperoleh pada perlakuan B (dosis yoghurt 4 mL/kg) sebesar 88%, disusul perlakuan A (kontrol) 81.33%, perlakuan C (dosis yoghurt 6 mL/kg) 78.67%, dan perlakuan D (dosis yohgurt 8 mL/kg) dengan nilai yang sama 78.67%. Berdasarkan hasil penelitian dapat disimpulkan bahwa pemberian pada kadar tepung biji trembesi terfermentasi yoghurt 4 ml/kg dalam pakan mempu meningkatkan pertumbuhan dan sintasan ikan nila. Kata Kunci:Trembesi,bioteknologi,Oreochromis niloticus, pakan.
 
Article
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.
 
Article
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%.
 
Article
Riparian vegetation has an important role in maintaining water stability, one of which is the river. This study aims to describe the structure of riparian vegetation so that its implications can be seen for the conditions of rainbow arfak habitat on the Nimbai River. The study was conducted in three forest types, namely primary riparia forest, secondary riparia forest and open riparia forest. Sample collection of riparian vegetation was carried out by purposive sampling using sample plots. Plots measuring 2 m x 2 m are used to sample seedling and understorey growth, plots measuring 5 m x 5 m for growth at the stake level, while plots measuring 10 m x 10 m and 20 m x 20 m, for growth of pole and tree levels respectively. The identification results obtained a total of 35 species of understorey and 51 tree-level plants in all three types of riparian forests. Based on the analysis of vegetation structure, it is known that the condition of primary riparia forest and secondary riparian forest still relatively supports the life of arfak rainbow fish compared to open riparian forest. Higher tree level density associated with canopy cover which has implications for the temperature of the water to be colder and less fluctuating, input larger litter into the food chain in the river, and hold suspended particles into the river. Also, the function of riparian vegetation in spawning activities, substrate attaching eggs and nursery habitat for arfak rainbow fish larvae. The results of this study indicate the importance of riparian vegetation structure on the condition of rainbow arfak fish habitat. An understanding of the structure of vegetation is also a basic information for efforts to rehabilitate this endemic fish habitat to maintain the existence of a natural population.
 
Article
This research was conducted in May 2018 in the coastal area of Banyuputih Subdistrict, Situbondo Regency, East Java with the aim of estimating the volume of seawater available in coastal waters and the capacity of coastal waters in assimilating N and P waste load based on N and P effluent standards for cultivation shrimp. The results showed that the coastal waters of Banyuputih had a volume of water available for dilution of N and P wastes of 43,198,298 m3. The maximum N and P waste load that can be assimilated by water according to the standard effluent of N waste for shrimp farming is 172, 8 tons and for the P waste load is 17.28 tons. The results of this study can be used as a reference in determining the environmental carrying capacity of coastal waters in the development of intensive shrimp ponds in the study area.
 
Article
The purpose of the research is to describe, know and understand the value of depreciation fixed assets with Straight line method. At the Household Scale Hatchery (HSRT) grouper fish, village Pasirputih, Bungatan, Situbondo City. 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. 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.
 
Article
Ekosistem yang terdapat di Desa Mapursalah satunya adalah ekosistem mangrove. Ekosistem ini yang memiliki dampak positif sehingga menjadi salah satu ekosistem yang mempunyai nilai penting bagi masyarakat sekitar.Ancaman yang dihadapi oleh ekosistem mangrove di Dusun Tuingadalah keberadaan dan aktivitas dari tambang timah tradisional yang dilakukan oleh masyarakat. Oleh karena itu, perlu dilakukan kajian terkait efek dari aktifitas manusia yang berpengaruh pada kondisi kesehatan hutan mangrove. Kajianini bertujuan untuk mengukur bagaimanastatus kesehatan hutan mangrove di kawasan Desa Mapur, serta mengetahui bagaimana pengaruh dari aktifitas kegiatan manusia terhadap kondisi kesehatan mangrove di Desa Mapur. Kajian dilakukan pada bulan Januari sampai Maret 2020 di Desa Mapur. Data yang dianalisis dalam penelitian ini meliputi kerapatan jenis, INP (indeks nilai penting) dan hemispherical photography. Berdasarkan pengamatan di Desa Mapur, kerapatan mangrove di stasiun penelitian adalah 1800 ± 265 ind / Ha hingga 1233 ± 145 ind / Ha. Dengan demikian, nilai ini termasuk dalam kategori baik berdasar Keputusan Menteri Lingkungan Hidup No. 201 tahun 2004. Jenis yang mendominasi di stasiun I adalah Rhizophora apiculata dengan nilai indeks nilai penting 232, 84% dan Rhizophora Mucronata 123 , 52% di stasiun II. Substrat yang dominan di lokasi penelitian baik stasiun I dan stasiun II adalah lumpur berpasir sehingga menjadi habitat yang baik untuk pertumbuhan berbagai jenis mangrove, terutama jenis Rhizophora apiculata dan Rhizophora Mucronata yang mendominasi hampir semua lokasi penelitian. Salinitas pada lokasi penelitian berkisar antara 27-30 ppm, pH antara 7,6-8,4, suhu 29 – 30 0C. Faktor fisika kimia perairan tersebut merupakan faktor yang mendukung untuk pertumbuhan mangrove secara optimal.
 
Article
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%.
 
Article
The study aimed to obtain isolate of cellulolytic bacteria from leaf litter on mangrove in Bangka Island. Sampling was conducted on mangroves in Sungailiat, Bangka and Tukak Sadai, South Bangka district. The isolation was carried out using 1% enriched agarmedia of Carboxymetyl Cellulose (CMC). The bacterial isolates were tested with cellulolytic growth on 1% enriched CMC agar medium and lugol added at 72 hours. The clear zone resultingindicates cellulose degradation ability. The positive isolate of cellulolyticwas identified by biochemical tests. 1 of 5 isolates in Sungailiat positive cellulolytic mangroves and identified as Bacillus subtilis. 2 of 5 isolates in mangrove Tukak Sadai is positive as a cellulolytic bacteria and identified as Staphylococcus saproviticus and Bacillus cereus.
 
Article
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. 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. These colony of bacteria in this sediment suspected as v. harveyii, v. alginolyticus, v. fischery dan v. mimicus.
 
Article
Tin mining activities in the Bangka Belitung Archipelago Province have led to the formation of pits that have not ideal water quality for aquatic organisms in general. Acidic pH and high metal contamination at certain age under certain causes only a few species are able to live well in these ecosystems. This study aimed to determine the identity of the pioneer fishes in ex-tin mining pit <1 year of Bangka Island through DNA barcoding based on COI gene. The pioneer fish in ex-tin mining pit <1 year were Kepala Timah fish dan Betok fish. Species determination was based on sequences similarity in NCBI and BOLD System showed that Ikan Kepala Timah had similarity with Aplocheilus panchax and its morphology indicated Ikan Kepala Timah was Aplocheilus panchax. The sequences similarity of Betok fish in NCBI and BOLD System showed that Betok fish had similarity with Anabas testudineusi and its morphology showed that Betok fish was Anabas testudineusi. The Kimua 2 Parameters (K-2P) Neigh­bour-Joining (NJ) clearly confirmed that Kepala Timah fish found in ex-tin mining pit <1 year was Aplocheilus panchax, whereas Betok fish was located outside clade of the group. It indicated that Betok fish was found in ex-tin mining pit <1 year can be expected as a morphotype of Anabas testudineusi that needed further confirmation in other studies, both molecularly and morphologically. The sequence data of COI gene of Betok fish found in ex-tin mining pit <1 year was expected can supported available sequence data of Anabas testudineusi in NCBI and BOLD System.
 
Article
Mikroplastik merupakan partikel plastik yang berukuran kecil (<5mm-330μm). Penelitian ini bertujuan untuk mengetahui bentuk, jumlah dan berat mikroplastik yang terdapat pada rajungan, sedimen dan air laut di perairan Desa Tebul Kwanyar. Pengambilan sampel menggunakan alat tangkap berupa jaring nelayan. Pengambilan sampel dilakukan di 2 kali pengamatan dalam 1 bulan dengan jumlah sampel sebanyak 30. Indentifikasi bentuk, jumlah dan berat mikroplastik pada rajungan, sedimen dan air laut dilakukan di Laboratorium Ilmu Kelautan Universitas Trunojoyo Madura. Indentifikasi mikroplastik pada rajungan menggunakan larutan basa KOH 10%, pada identifikasi sedimen menggunakan larutan NaCl pekat sebanyak 150ml, dan pada air laut disaring 100ml menggunakan kertas saring. Pengamatan identifikasi mikroplastik menggunaan mikroskop stereo. Identifikasi mikroplastik pada rajungan, sedimen dan air laut ditemukan 3 bentuk mikroplastik yaitu fiber, film dan fragmen. Rata-rata jumlah mikroplastik paling tinggi terdapat pada sedimen yaitu sebesar 58,7 partikel. Rata-rata jumlah mikroplastik pada rajungan yaitu 34,7 partikel, dimana mikroplastik yang paling tinggi ditemukan yaitu bentuk fiber.
 
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Racewaytechnological is a cultivation technology innovation that is able to increase production and productivity. Its development can be done in all areas with large water source discharge and flowing throughout the year, one of which is Banjaran Irrigation. Survey along the irrigation area of Banjaran, Purwokerto with purposive sampling technique is done with the aim to know the potential location of the application of red tilapia fish rearing technology. Land suitability matrics were obtained from the results of field measurements in Cijambe, Subang and Ponggok, Klaten which then performed matching with the results of research and literature supporting the enlargement of tilapia. Giving weight and score is done through approach of index overlay model. Red tilapia rearing atproductive racewaycan be conducted along the irrigation area of Banjaran, Purwokerto. There were 6 locations that can be utilized on one side and 5 locations that can be utilized on both sides.
 
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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. Key Words: Economical, Fisherman, Fish Boat, Banyu Urip
 
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Gill nets is the most dominant fishing gear used by fishermen in Kampung Nelayan Village. Gill nets 2 and 3 inches are widely used by traditional fishermen and modern fishermen because this tool is very practical to catch fish also friendly to the environment. This study aims to determine the construction and friendliness of fishing gear gill nets 2 and 3 inches which include the length of the net, the width of the net, shortening, buoyancy and sinking power. This research was carried out in the Village of Kampung Nelayan, Tungkal Ilir Subdistrict, Tanjung Jabung Barat District in February 2018. The method used in this research was survey method. The data obtained were analyzed using net dimension analysis and descriptive statistical analysis. Based on the results of research on the construction of 2 and 3 inches gill nets consisting of nylon monofilament made from transparent colors. The knot used by the English knot. Top rope, float, and float buoy made from polyethylene (PE) rope and ballast rope made from polypropylene (PP). The sinker made from tin and gill net 3 inch weight based on bracelet-shaped wire.Net shortening value of 2 inch is 51.75% and has a buoyancy of 3.05 kgf and a sinking power of 9.97 kgf. As well as the value of gill shortening 3 inch 50.62% and the buoyancy generated 6.22 kgf and the sinking power of 365.4 kgf. The value of environmental friendliness of 2 and 3 inch nets has a value of 31.25 and 30.75 and is classified as environmentally friendly fishing gear.
 
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Pangasius sp. is a mainstay commodity in Indonesia. Economically Pangasius sp., is promising to be developed as an export commodity. Hatcheries of Pangasius sp. are carried out at the Marine and Fisheries Service Branch Subang. Data analysis in this research used quantitative descriptive analysis and qualitative descriptive analysis. The results of the research that Pangasius sp. can issue 323.500 eggs per broodstock with the egg weight released by each broodstock was 300 gr. The productivity of Pangasius sp. eggs can reach 5.176.000 eggs with Hatching Rate 99.6 %. The survival rate was 85 %. Analysis of the Pangasius sp. hatchery business after analyzing the R/C ratio resulted in a value of 2.9 where this business could provide a large income in a monthly cycle.
 
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Lenggang River in East Belitung regency becomes the natural habitat of Cempedik Fish (Osteochilus spilurus) which is an important economical plankton-feeder fish and has close to the culture of society. The production which still dependent of natural catch makes the description of phytoplankton can be the foundation in fisheries management and developing aquaculture of Cempedik Fish. This study aims to obtain a description of phytoplankton in Lenggang River using quantitative descriptive method. Phytoplankton sampling was conducted during the Cempedik Fishing season in December 2016 with four stations on the Lenggang River based on Cempedik Fish catching location. The abundance of phytoplankton showed values between 3,710 - 8,676 individuals / liter and correlated with the location of Cempedik Fish catch. The dominant index of phytoplankton showed a low value (0.16-0.21) and the uniformity index at the moderate level (0.66 - 0.79) with the Bacillariophyceae Class having the highest dominance.
 
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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.
 
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Ikan gurami merupakan salah satu komoditi perikanan air tawar yang harganya relatif lebih tinggi dibandingkan dengan ikan air tawar lainnya. Budidaya ikan gurami ini masih memiliki beberapa kendala pada masa pemeliharaannya. Kendala yang terjadi diantaranya adalah pertumbuhan ikan gurami yang relatif lambat dan harga pakan ikan yang meningkat tanpa diikuti dengan harga jual ikan. Hal ini mengharuskan adanya upaya untuk mengurangi biaya pakan. Penelitian ini bertujuan untuk mengevaluasi pengaruh penambahan tepung daun gamal fermentasi ke dalam pakan komersil terhadap pertumbuhan benih ikan gurami selama pemeliharaan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 4 taraf perlakuan dan 3 ulangan. Penelitian dilakukan selama 40 hari. Hasil penelitian menunjukkan bahwa penambahan fermentasi daun gamal pada pakan berpengaruh nyata terhadap pertumbuhan benih ikan gurami. Campuran 75 gram daun gamal dan 25 gram pakan komersil merupakan komposisi terbaik untuk mengurangi penggunaan pakan komersil
 
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Freshwater fish has an important role in fulfilling an affordable source of animal protein, especially for areas that have limited access to fish from sea catches. Tilapia fish (Oreochromis niloticus) is one type of freshwater fish that is popular and generally consumed by many people. This study was conducted to determine the effect of community interest in the Kotabumi area, North Lampung Regency on tilapia fish that are maintained in different habitats, namely naturally grown in Lake Ranau, West Lampung Regency, and artificially in the enlargement pond owned by the community in Kotabumi area. Based on the results of the available data, it is concluded that fish habitat has an effect on people's consumption interest. Tilapia fish originating from Lake Ranau are more attractive to the community when compared to local tilapia fish that are kept in community ponds in the Kotabumi area. The organoleptic test value of fresh tilapia originating from Lake Ranau has a higher value of 7,84 ≤ µ ≤ 8,28, compared to tilapia fish from community ponds with a value of 7,52 ≤ µ ≤ 7,55
 
Gambar 2. Ilustrasi pemasangan jaring perangkap serasah (litter trap) (Farhaby & Utama, 2019) Pengukuran Dekomposisi Serasah Pengukuran laju dekomposisi diawali dengan pengeringan daun mangrove pada temperatur 105ºC selama 1 hari. Serasah mangrove yang sudah kering dimasukkan ke dalam litter bag dan diletakan
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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 m2 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 / m2, Station 2 is 2.80 grams dry weight / m2, and Station 3 is 6.67 grams dry weight / m2. The mangrove decomposition rate at station 1 was 63.33%, station 2 was 62.05% and station 3 was 67.73%.
 
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Kegiatan pemanfaatan dan eksploitasi ekosistem terumbu karang yang tidak ramah lingkungan dapat meningkatkan tekanan dan ancaman terhadap sumberdaya tersebut. Tujuan dari penelitian adalah untuk menghitung status resiliensi nelayan terhadap ekosistem terumbu karang. Lokasi penelitian di Pulau Biawak, Kabupaten Indramayu. Data yang digunakan dalam penelitian ini merupakan data primer dan data sekunder. Data primer diperoleh dengan metode wawancara menggunakan kuisioner dan observasi langung. Data sekunder diperoleh melalui kajian pustaka dan analisis berbagai literatur yang terkait dengan penelitian. Analisis indeks resiliensi nelayan dengan merepresentasikan dalam suatu komposit geometri. Hasil analisis indeks resiliensi nelayan (IRN) menunjukkan bahwa nelayan di lokasi studi menunjukkan tingkat resiliensi pada kategori resilien (66,9). Beberapa kegiatan dan program dari stakeholders dengan melibatkan nelayan dalam melakukan upaya transplantasi terumbu karang dapat meningkatkan resiliensi masyarakat dari parameter pengetahuan, adaptasi, persepsi dan ketergantungan.
 
Top-cited authors
Supriatna Supriatna
  • Brawijaya University
Heri Ariadi
  • Pekalongan University
Mohammad Mahmudi
  • Brawijaya University
Mohamad Fadjar
  • Brawijaya University
Ren Fitriadi
  • Universitas Jenderal Soedirman