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Melabouw Mihauw: The Tradition of Flying Fish Catching Among the Kayo Pulo People in Papua Indonesia
Get PDFThis research was carried out in Tahima Soroma Village and around Humbolt Bay, Jayapura City using descriptive qualitative approach. The selection of informants was carried out in snowball, guided by key informants and using in-depth interviews and observations as data collection techniques. The data collection techniques used were in-depth interviews and observation. The data analysis techniques used are processing and preparing data, reading all data, analyzing by coding the data, applying the coding process to describe categories, and processing data in narrative-interpretive form. The results show that the tradition of flying fish catching is a little tradition that is in the profane realm and has a meaning regarding identity, and relations as well as social solidarity among fellow group members. Because fishing activities are subsistence in behaviour and are prepared for ceremonial celebrations
Efektivitas Pemanfaatan Probiotik Terhadap Pertumbuhan, Sintasan dan Stress Resisten Udang Vaname (Litopenaeus vannamei)
Get PDFUdang vaname (Litopenaeus vannamei) adalah jenis udang yang potensial dikembangkan dan merupakan jenis udang yang banyak dipelihara di tambak. Untuk meningkatkan produksi udang vaname salah satu yang factor penting adalah mutu pakan yang diberikan. Salah satu strategi yang paling banyak digunakan khususnya pada kegiatan budidaya udang secara intensef untuk meningkatkan kualitas dan kemanfaatan pakan yaitu dengan penggunaan probiotik. Penelitian ini dilaksanakan pada bulan September sampai November 2023. Penelitian ini dilaksanakan di Laboratorium Basah, Politeknik KP Bone. Hewan uji yang digunakan dalam percobaan adalah udang vaname dengan berat 1±0,5 g yang dipelihara sebanyak 20 ekor/wadah. Penelitian dilakukan menggunakan racangan acak lengkap (RAL) terdiri atas 4 perlakuan dan 3 kali ulangan, yaitu kontrol, Bi Klin, Pro Equilibrium, dan Bio N Plus. Hasil percobaan memperlihatkan bahwa penambahan probiotik berpengaruh signifikan (p<0,05) pada pertumbuhan, sintasan, dan ketahanan stres. pertumbuhan tertinggi yaitu 9,07%, sintasan tertinggi yaitu 93,33% dan stress resisten tertinggi pada perlakuan B yaitu menit 135 dan hari ke 20
Pemetaan Sebaran Klorofil-a dan Suhu Permukaan Laut (SPL) Menggunakan Data Citra Aqua Modis Pada Musim Barat dan Musim Timur di Perairan Teluk Tomini
Get PDFKlorofil-a dan suhu permukaan laut bisa menjadi salah satu indikator kesububuran perairan. Oleh Karena itu, sebarannya perlu diketahui untuk dapat dimanfaatkan lebih lanjut, penelitian ini bertujuan untuk memetakan sebaran klorofil-a dan suhu permukaan laut di Teluk Tomini pada musim barat dan musim timur. Metode yang digunakan adalah pengindraan jarak jauh dengan menggunakan data citra. Sebaran klorofil-a di perairan Teluk Tomini pada musim barat (Desember-Februari) relatif lebih tinggi yaitu 0.23 mg/m³-0.27 mg/m³, sedangkan pada musim timur (Juni-Agustus) nilai rata-ratanya berkisar antara 0.20 mg/m³-0.25 mg/m³. Nilai klorofil pada musim barat lebih tinggi dari pada mada musim timur. Suhu pada musim barat (Desember-Februari) yaitu 30,40–30,53°C, sedangkan pada musim timur (Juni-Agustus) berkisar antara 30,08–30,7°C. Kisaran suhu pada musim timur lebih tinggi dari pada musim barat. Tingkat klorofil-a perairan lebih tinggi di perairan yang dekat dengan daratan dari pada yang jauh dari daratan. Suhu permukaan laut di bagian dalam Teluk Tomini cenderung lebihtinggi dari pada di teluk bagian luar
IDENTIFICATION OF WASTE FROM FISHING VESSEL BASED AT THE BITUNG OCEAN FISHING PORT
Get PDFOne source of marine pollution can be caused by the operational activities of fishing vessels. This research aims to identify the type and amount of waste originating from fishing vessels. Data collection was conducted at Bitung Ocean Fishing Port during November-December 2023 by purposive sampling. The waste that has been collected, sorted and weighed. Data were analysed using descriptive quantitative. The waste generated by fishing vessels consists of two types, namely organic and inorganic waste. Organic waste consists of food waste and kitchen waste, while inorganic waste consists of 70% plastic, 12% processed wood, 10% glass, 6% clothing or cloth, and 1% metal and rubber. Organic waste is disposed of directly into the sea, while inorganic waste is collected in storage containers for later disposal on land. There is a need for more action in fishery vessel waste management, such as training in recycling that can generate economic benefits, in an effort to reduce waste from fishing vessels
PERFORMA PERTUMBUHAN IKAN KAKAP PUTIH (Lates calcarifer) YANG DIBERI PAKAN IKAN TAMBAN (Sardinella abella) SEGAR DENGAN RASIO BERBEDA TERHADAP BIOMASSA
Get PDFPenggunaan pakan buatan (pelet) menjadi komponen biaya terbesar dalam pembesaran ikan kakap putih. Pemberian pakan segar yang harganya murah merupakan salah satu alternatif untuk menekan biaya pakan. Tujuan penelitian ini yaitu untuk mengevaluasi performa pertumbuhan ikan kakap putih yang diberi pakan ikan segar berbeda persentase. Penelitian dilakukan pada bulan Juni sampai Juli 2022 di keramba jaring apung di Kampung Teluk Air, Kecamatan Bulang, Batam. Rancangan acak lengkap empat perlakuan dan tiga ulangan yang diterapkan pada penelitian ini. Perlakuan tersebut adalah (perlakuan A) pemberian pelet 5% biomassa, (perlakuan B) pemberian ikan segar 5% biomassa, (perlakuan C) pemberian ikan segar 10% biomassa, dan (perlakuan D) pemberian ikan segar 15% biomassa. Data performa pertumbuhan dianalisis dengan analysis of variance dan dilanjutkan dengan uji Duncan. Hasil percobaan memperlihatkan bahwa pemberian ikan segar 5% dari biomassa (perlakuan B) berbeda nyata pada nilai pertumbuhan bobot mutlak, laju pertumbuhan harian, efiensi pakan serta konversi pakannya (P<0,05) dibanding perlakuan lainnya. Nilai pertambahan bobot akhir (56,97 g), pertumbuhan harian (0,95 g hari-1), dan efisiensi pakan (38,80%) dari perlakuan B lebih tinggi dibanding kontrol, sedangkan konversi pakan (2,58) lebih rendah dari perlakuan C dan D. Simpulan penelitian ini adalah bahwa pemberian ikan tamban pada rasio pemberian pakan 5% total bobot ikan memberikan performa pertumbuhan dan feed conversion ratio ikan kakap putih terbaik.The use of artificial feed (pellets) is the highest-cost component in barramundi farming. Providing fresh, cheap feed can significantly reduce feed costs. The study aimed to evaluate the growth performance of barramundi fed with different feeding ratios of fresh sardine. The experiment was conducted from June to July 2022 in floating net cages located in Teluk Air Village, Bulang District, Batam. The experimental units were arranged in a completely randomized design consisting of four treatments and three replications. The feeding treatments were using pelleted artificial feed at 5% (treatment A, control), and fresh sardine at 5% (treatment B), 10% (treatment C), and 15% (treatment D) of the total cultured fish biomass. Growth performance data were analyzed using analysis of variance and continued with the Duncan’s test. The experimental results showed that treatment B had resulted in significant differences in the absolute weight growth, daily growth rate, feed efficiency, and feed conversion (p<0.05) compared to other treatments. The values of final weight gain (56.97 g), daily growth (0.95 g day-1), and survival rate (93.33%) were higher compared to the control, while feed conversion (2.58) was lower than those of C and D treatments. This research concludes that feeding fresh sardine at 5% feeding ratio yields the best growth performance and feed conversion ratio of cultured barramundi
USED OF FISHING TOOLS AND FISHING AID IN KENDARI OCEAN FISHERY PORT
Get PDFFishing Gear is equipment used by fishermen to catch fish and other marine animals. The operation of the fishing gear itself is not always alone, some fishermen use fishing aids to increase the effectiveness and efficiency of fishing activities. Some types of Fishing aids commonly used by fishermen are lamps and fish aggregating devices (FADs) used to collect fish and power blocks/axles, or line haulers used by fishermen to facilitate the operation of the fishing gear. This study aims to find out what fishing gear and fishing aids are in Kendari and analyze their compliance with existing regulations. The research activities were carried out for 2 months, namely from November to December 2023 at the Kendari Fisheries Port. The type of data collected is qualitative data including construction data from each API in Kendari through direct observation. The data collected is then analyzed descriptively. Based on the data obtained, the types of Fishing Gear used by vessels based at the Kendari PPS are 5 (five) fishing gears, consisting of Tuna Hand Line, Huhate, Purse Seine, Hand Line, Squid Fishing. This fishing gear is an active fishing gear. Fishing aids used by fishermen at PPS Kendari include LED lights, Pakurung and fish aggregating devices. There are still violations related to the use and operation of fishing gear (purse seines), as well as the installation of fish aggregating devices. To avoid violations of the use of fishing gear and fishing aids, currently there is still a need for supervisory officers and equipment support using technology
DISTRIBUTION OF MOLUSC TYPES (Gastropoda and Bivalves) IN SEAMUS IN THE WATERS OF TANJUNG SALEH VILLAGE, MOROTAI ISLAND DISTRICT
Get PDFThe vast seagrass field allows the number of biota that live associated with seagrass. One of the wealth of marine resources that is often found is mollusks such as snails, shellfish, octopus, cuttlefish and squid. Mollusks are found in coastal areas with seagrass beds as their habitat. One of the most commonly found mollusk groups in Bere Bere village waters is gastropod and bivalvia. Research Objectives To determine the distribution of mollusks in the waters of Bere-Bere Village. This study was conducted in October 2021 to January 2022 located in the waters of Bere-Bere Village, North Morotai District, Morotai Island Regency. Data collection uses the quadratic transect method to identify mollusks (gastropods and bivalvia) that are found in each square. The transect rope is pulled perpendicular to the sea along 50 m during the receding sea water starting from the zero point (0), to the point of 50 m, the square distance is 10 m while the transect distance is 25 m, while the distance between the station is 50 m, then the square is placed on Every distance of 10 m along the transect that can represent the locations that have gastropod and bivalvia samples. Organism found along the transect, in the squares observed and then identified using an identification book. Field work practices were found 11 types of gastropods (Conus Gladiator, Conus Littyus, Trochidae sp, Cerithiidae sp, Canarium sp, Muricodrupa fenestrata, Vexillum sp, Strombus Campbelli, Strombus Campbell , Conus Episcopatus, Conus Sulcatus, Conus Pennaceus) and 3 types of Bivalvia (Lambis Lambis, Pinna Muricata, Diloma Radula) which are spread on three stations in the waters of Bere-Bere Village
THE DETERMINATION OF THE DEPTH OF TPI PALANG’S HARBOUR BASIN TUBAN THROUGH CALCULATION OF TIDE COMPONENT
Get PDFDetermination of the datum chart using the tide component can be used to determine the depth of the harbour basin. TPI Palang's harbour basin is often used as a place for mooring fishing boats, but it often happens that the ships get stuck before entering the haarbour basin. The type of fishing ship at the TPI Palang harbour basin is a payang boat with a draft depth of 2 m. The depth of the harbour basin measurement results in July 2017 was 8 m, while based on the bathymetric map is 12 m. Palang waters, in Tuban Regency is located in the North Sea of East Java, which is open water type, therefore the determination of the depth of the harbour basin is based on the state of the water, is 1.2 x ship draft, which is 2.4 m. The least square and the admiralty method were used to compare the best method in calculating the tidal component. Researchers used tidal data for August 2016- July 2017 obtained from BIG. The tidal type of the Palang waters is diurnal, with an F value for admiralty treatment of 5,160 with least square processing of 5,167. The correlation coefficient of the tidal component with admiralty processing occurs in K1-MS4 of 0.792, while the least square occurs in K1-M4 of 1.6. The result of the calculation of the tidal component of the least square is used to determine the value of the datum chart. The IHO (International Hydrographic Organization) datum chart is used as a basic reference for calculating the depth of the TPI Palang harbour basin. The results show that the required depth of Palang waters in the existing condition (8 m) still requires dredging between 0.033 - 1.071 m. However, to meet the standard of the harbour basin, the required depth is 13,071 m (from LWS) to 13,557 m (from LLWS) which means that the dredging of the harbour basin is about ± 4 m
PENINGKATAN PERTUMBUHAN MIKROALGA Chaetoceros ceratosporum DAN Nannochloropsis oculata MENGGUNAKAN STRAIN BAKTERI TERSELEKSI PADA KULTUR SKALA TERKONTROL
Get PDFSejalan dengan peningkatan produksi budidaya perikanan, maka diperlukan intensifikasi produksi benih ikan atau udang. Di antara permasalahan yang dihadapi pembenih adalah ketersedian pakan alami (microalgae) yang memadai dan kontinu baik kualitas maupun kuantitas selama pemeliharaan larva. Upaya meningkatkan produksi mikroalga melalui pendekatan hubungan koeksistensi dan pemacuan pertumbuhan dengan memanfaatkan peran bakteri yang menguntungkan perlu dilakukan. Tujuan penelitian ini adalah untuk mendapatkan dan mengetahui efektivitas strain bakteri terseleksi yang mempunyai kemampuan menstimulasi pertumbuhan dalam meningkatkan pertumbuhan mikroalga pada kultur skala terkontrol. Pada penelitian ini digunakan mikroalga Chaetoceros ceratosporum dan Nannochloropsis oculata. Bakteri yang berasosiasi dalam kultur tersebut diisolasi, dilakukan screening, uji aktivitas sintesis enzimatik, karakterisasi, identifikasi, kultur, dan re-inokulasi pada kultur mikroalga. Hasil yang diperoleh ada tujuh isolat bakteri dari C. ceratosporum dan delapan isolat dari N. oculata. Hasil uji aktivitas sintesis enzimatis ternyata hanya ada satu strain (kode CC-22) pada C. ceratosporum dan dua strain pada N. oculata (kode NN-5 dan NN-6) yang potensial menunjukkan peran stimulasi pertumbuhan mikroalga. Dengan pendekatan karakterisasi molekuler menggunakan 16SrRNA maka diperoleh Marinobacter vinifirmus CC22, Alteromonas sp. NN-5, dan Marinobacter hydrocarbonoclastic NN-6. Dari tiga strain bakteri yang terisolasi nampaknya hanya Marinobacter vinifirmus CC22 dan Alteromonas sp. NN-5 yang mempunyai sifat dapat memacu pertumbuhan C. ceratosporum sebesar 1,76 kali (176 %) dan N. oculata sebesar 1,56 kali (156 %) dibandingkan dengan kontrol. Kedua strain bakteri ini menunjukkan potensi untuk meningkatkan kuantitas dan kualitas mikroalga serta berpeluang sebagai probiotic agent untuk menstimulasi pertumbuhan C. ceratosporum dan N. oculata.The intensification of fish and shrimp seed production is necessitated to support the ever growing global aquaculture production. One of the problems faced by most hatcheries is the unavailability of high quality and stable supply of live feed (microalgae) required during larval rearing. Efforts to increase microalgae production through a coexistence relationship approach and promoting growth by utilizing the role of beneficial bacteria need to be carried out. The aims of this study were to obtain and determine the effectiveness of selected bacterial strains that have the ability to stimulate microalgae growth in controlled culture environments. In this study, the microalgae Chaetoceros ceratosporum and Nannochloropsis oculata were used. Bacteria associated in the culture were isolated, screened, tested for enzymatic synthesis activity, characterization, identification, culture, and re-inoculation on microalgal cultures. The results obtained were seven bacterial isolates from C. ceratosporum and eight isolates from N. oculata. The results of the enzymatic synthesis activity test showed that there was only one strain (code CC-22) in C. ceratosporum and two strains in N. oculata (codes NN-5 and NN-6) which potentially showed a role in stimulating microalgae growth. With a molecular characterization approach using 16SrRNA, Marinobacter vinifirmus CC22, Alteromonas sp. NN-5, and Marinobacter hydrocarbonoclastic NN-6. From the three isolated bacterial strains, it appeared that only Marinobacter vinifirmus CC22 and Alteromonas sp. NN-5 had the property of being able to stimulate the growth of C. ceratosporum by 1.76 times (176%) and N. oculata by 1.56 times (156%) compared to the control. These two bacterial strains showed the potential to increase the quantity and quality of microalgae and had the opportunity to act as probiotic agents to stimulate the growth of C. ceratosporum and N. oculata
