Marine Fisheries : Journal of Marine Fisheries Technology and Management
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FRESHWATER STINGRAY FISHERMEN’S INCOME IN MUSI RIVER, PALEMBANG CITY, SOUTH SUMATRA
Get PDFFreshwater stingrays are one of the catches targeted by fishers in the Musi River of Palembang City. However, freshwater stingrays are listed as endangered species by the IUCN, and Indonesian government regulates their preservation. Prohibiting the capture of freshwater stingrays can have significant impact on the livelihoods of fishers around the river. This research was designed to analyze fishers’ income and identify the contribution of freshwater stingray catches toward fishers’ income. According to income analysis, the results show that the average fishers’ income is around IDR 269,542.13 - 655,287.47 per trip per day with an R/C ratio to the total cost is 3.78 in the regular season and 2.14 in the low season. The share of freshwater stingray catches toward the total income ranges from 14.22% to 20.93%.
Keywords: elasmobranch, livelihood, profit sharing, sustainable fisherie
CATCH COMPOSITION AND CATCHABLE SIZE OF LOBSTERS (Panulirus spp) IN LEBAK BANTEN WATERS, INDONESIA
Get PDFInformation on the catch composition and catchable size of lobsters in Lebak waters remains limited, posing challenges for effective fisheries management. This study aims to assess the technical performance of the lobster fishery and analyse catch composition. Data on technical performance were collected through interviews with fishers and lobster collectors using random sampling, while a census approach was applied to measure carapace length and weight for 589 lobsters. A descriptive quantitative analysis was conducted to evaluate the length-weight relationship of lobsters. The findings indicate that fishers predominantly use polyamide monofilament gillnets with a mesh size of 3.5–4.0 inches, operating traditional outrigger boats of 2–3 GT and 7 GT for single-day fishing trips in Lebak waters. Panulirus homarus was the dominant species in the catch. The sex ratio of lobsters was imbalanced, and their growth pattern exhibited negative allometry (b < 3). An assessment of catch sizes against the standards set by PERMEN-KP No. 16/2022 revealed a high proportion of undersized lobsters in the Binuangeun Estuary, including P. penicillatus (78–83%), P. homarus (80–100%), P. ornatus (23%), P. longipes (90–100%), and P. versicolor (65–100%). Similarly, in the Cibareno Estuary, the percentages of undersized lobsters were P. penicillatus (84–100%), P. homarus (98%), P. ornatus (0%), P. longipes (100%), and P. versicolor (92%). These findings highlight the need for stricter management measures to ensure sustainable lobster fisheries in the region.
Keywords: catchable, Lebak Banten waters, length weight, lobster, sex rati
POLA ANTREAN KAPAL PENANGKAPAN IKAN DI PELABUHAN PERIKANAN KARANGSONG, KABUPATEN INDRAMAYU
Get PDFA catch unloading is a fishing vessel activity carried out regularly at the port. The high frequency of unloading activities leads to a long queue which requires fishing vessels to wait in significant time for their unloading turn. One of the fishing ports with a significant waiting time is Karangsong Port, where the unloading queue can reach three weeks. To reduce the waiting time, there is a need to identify the utilization level of unloading facilities and queue patterns, as well as calculate unloading time and its influencing factors at Karangsong fishing port. This case study was focused on vessel queuing patterns, utilization of port facilities and the length of unloading time. Data were collected through direct interviews and observations. Based on the calculation results, the utilization rate of the unloading dock is 20.16%, TPI is 36.63% and the port basin reaches 577.86%. The vessels queue in double lines with a single service facility. The average length of unloading time for >30 GT vessels is 2.60 hours while for ≤30 GT vessels is 11.92% faster which is recorded at 2.29 hours. Factors affecting the length of unloading time incorporate the vessel\u27s size, crew size, number of catches, availability of scales, market demand as well as the vessel\u27s position and number of vessels in the queue.
Keywords : Queue, fish unloading, port facilitie
COMPOSITION, LENGTH-WEIGHT RELATIONSHIP, AND FISHING GROUND OF SHARKS LANDED AT PPS CILACAP, CENTRAL JAVA
Get PDFThis study was conducted to analyze the catches of sharks, such as composition, length-weight relationship, and to determine the distribution of shark fishing areas. Every fishing activity has by-catch issues. Fishers commonly catch sharks as by-catch. These fishing activities will harm the shark ecosystem in the waters. This research was conducted in March – May 2021 at PPS Cilacap. The results of this study showed that A. superciliosus (paitan shark) was a common catches and its total catch was 1,820 kg. The next common catch was Carcharhinus falciformis and the total catch was 723 kg. The lowest catch was the Carcharhinus sorrah shark (sorrah shark) and its total catch was 16 kg. The growth of Carcharhinus falciformis was negative allometric because b-value <3. Meanwhile, the growth of A. superciliosus is positive allometric because b-value was > 3. Length-weight relationship of Carcharhinus falciformis and A. superciliosus was isometric, which means that the growth between length and weight is balanced. Shark fishing areas are located at coordinates 8º - 15º South and 100º - 111º East. The area of shark fishing is at coordinates 8º - 10º South and 108º - 110º East.
Keywords: Composition, Length-Weight Relationshi
DESIGN AND DEVELOPMENT OF A DEEP LEARNING-BASED AUTOMATIC FISHERIES LOGBOOK FILLING TOOL
Get PDFFilling out a fishery logbook is critical in capturing fisheries to maintain fishery sustainability. However, manual logbook filling often leads to errors in data recording, which can impact the accuracy and quality of fishery data. This study propose the design of an automatic fisheries logbook filling tool based on Deep Learning, called FLOADS (Fisheries Logbook and Detection System). This system consists of instruments placed at the ship\u27s hatch, equipped with a camera capable of detecting fish species, measuring the weight of individual fish passing through, and recording and sending data, along with the ship\u27s position and speed, to a server on land. The development stages of the FLOADS include problem identification, tool design, prototype development, and field testing. The FLOADS prototype consisted of three parts: a fish collection container, a fish sliding area, and an Imaging Box with dimensions of 120 cm × 65 cm × 82 cm. Validation of the YOLOv5 model showed an accuracy rate of 99.07% and an F1-Score of 99.1% for recognizing the Tuna, Cakalang, and Tongkol (TCT) fish species. Field testing was conducted in Palabuhanratu using a 10 GT fishing vessel. The field testing results show that FLOADS performs well on board to detect objects with an accuracy rate of 89.1% and track vessel activities with reasonable accuracy.
Keywords: Deep Learning, DeepSORT, Fisheries Logbook, Measurable Fishing, TCT
Ecosystem Approach to Fisheries Management Status At West Kei Kecil Small Island Park, South East Maluku Regency
No full textAssessment of fisheries management with an ecosystem approach (EAFM) in the TPK Kei Kecil conservation area is important to determine the actual conditions of management in the conservation area as a follow-up step for sustainable management. This study aims to analyze the status of fisheries management and efforts to improve management based on the EAFM approach. The study was conducted in 10 villages/ohoi in 4 sub-districts in Southeast Maluku district. Data collection was carried out by interviewing fishery households and institutions as well as tracing data that referred to the EAFM indicator assessment method which included 30 indicators from six domains. The management status of the TPK Kei Kecil conservation area is classified as moderate category which is obtained based on the management status per domain, respectively: a) the domain of fish resources is moderate; b) habitat/ecosystem domain is moderate; c) fishing techniques domain is moderate; d) social domain is moderate category; e) economic domain is low category; and f) institutional domain is moderate category. Recommendations for fisheries management in the conservation area of TPK Kei Kecil are sought to improve the economic domain and fishing techniques, especially in indicators of asset ownership, fishermen\u27s household income, savings ratio, fishery capacity and fishing effort, legal documents on vessel functions and sizes as well as crew certification
DISTRIBUTION OF SUBSIDIZED DIESEL FUEL ON FISHING VESSELS IN PPI LHOK BENGKUANG, SOUTH ACEH: Distribusi BBM Solar Subsidi pada Kapal Perikanan di PPI Lhok Bengkuang, Aceh Selatan
Get PDFFishers at PPI Lhok Bengkuang, South Aceh Regency, are still unable to obtain subsidized fuel oil. This is influenced by the increasing demand and the limited fuel supply at nearby fuel station.The purpose of this study is to calculate the amount of diesel fuel distributed to fishers, the servicecapacity of the fuel station at PPI Lhok Bengkuang, and the amount fuel supply. Data were collectedthrough observation and direct interviews with fishers who buy fuel regularly, which are then analyzedusing simple math. The results of this study show that 125 L of diesel fuel were subsidized subsidiesfor 4 months, with a monthly average requirement of 31.92 liters. Fishing vessels with a size of 1–10GT consumed most diesel fuel ranging from 85 to 285 liters. The tank capacity of the fuel station is20,000 liters, and to fullfil the demand, diesel fuel is delivered 1-2 times per month.
Keywords: fishing vessels, fishing port Lhok Bengkuang, fuel, subsidized diese
KETERKAITAN MUSIM HUJAN DAN MUSIM ANGIN DENGAN MUSIM PENANGKAPAN IKAN LEMURU YANG BERBASIS DI PPN PENGAMBENGAN
Get PDFMusim penangkapan ikan seringkali dikaitkan dengan kondisi iklim dan cuaca seperti hujan dan musim angin. Penelitian ini bertujuan untuk menganalisis keterkaitan antara musim hujan dan musim angin dengan musim penangkapan ikan lemuru di perairan Selat Bali. Data yang digunakan adalah data produksi bulanan dari Pelabuhan Perikanan Nusantara (PPN) Pengambengan periode Januari 2015 hingga Oktober 2022. Selain itu, data curah hujan, data arah dan kecepatan angin didapatkan dari data harian stasiun klimatologi BMKG Jembrana pada periode data yang sama. Masing-masing komponen data dianalisis secara deskriptif kuantitatif. Selanjutnya dihitung indeks musim hujan, musim angin kencang dan musim penangkapan dengan metode persentase rata-rata. Hasil penelitian menunjukkan periode musim hujan terjadi pada bulan Oktober hingga Maret dan musim kemarau pada bulan Juni hingga September. Arah angin dominan adalah arah tenggara (150 derajat) dengan nilai resultan 62%. Musim angin tenggara (muson timur) terjadi pada bulan Juni – September dan musim angin barat daya (muson barat) pada bulan Desember – Maret. Diantara dua musim utama tersebut terdapat musim peralihan yaitu bulan April-Mei dan Oktober-November. Musim penangkapan ikan lemuru terjadi pada bulan September, Oktober, November, Desember dan April. Hasil uji beda Mann-Whitney menunjukkan terdapat perbedaan musim penangkapan ikan lemuru pada musim muson barat dan muson timur dengan musim peralihan.Kata kunci: musim hujan, musim angin muson, musim penangkapan lemur
COMPOSITION OF THE NEW DESIGN OF PAYANG CATCHES IN MAJENE WATERS, MAKASSAR STRAIT: Komposisi Jenis Tangkapan Payang Desain Baru Di Perairan Majene, Selat Makassar
Get PDFIn this study, a new design scottish seine net was used with larger than the general size of the Scottish seine net in the research location. The purpose of this research was to analyze the total catch, species composition and the length of the catch. The study was conducted on one case of a Scottish seine net fishery unit by making a new design of Scottish seine net and then operating it with Scottish seine net fishers in the waters of Majene Makassar Strait. The parameters observed were the fish species caught and the length of each species. From the study results, it was found that the catch of 8 species of fish with total of 15,253 fish in the other bag. The species composition consisted of Shortfin scad (Decapterus macrosoma) 66.48%, Indian mackerel (Rastrelliger kanagurta) 14.42%, Rainbow runner (Elagatis bipinnulata) 7.09%, Mackerel tuna (Euthynnus affinis) 3.83%, Malabar trevally (Carangoides malabaricus) 2.39%, Unicorn leatherjacket (Aluterus monoceros) 2.29%, Skipjack tuna (Katsuwonus pelamis) 2.19% and Goldstripe sardinella (Sardinella gibbosa) 1.31%. The length of the dominant catch Shortfin scad (Decapterus macrosoma) as much as 66.48% ranged from 12.5 - 27 cm with a catchable percentage of 82.53% while Indian mackerel (Rastrelliger kanagurta) as the second highest catch was 14.42% only about 2 ,64% worth catching
THE EFFECT OF RED LED LIGHTS ON POT CATCHES IN PENAAH WATERS, LINGGA RIAU ISLAND: Pengaruh Penggunaan Lampu LED Merah Terhadap Hasil Tangkapan Bubu di Perairan Penaah, Lingga Kepulauan Riau
Get PDFPot fisheries are one of the dominant activities of capture fisheries in the Penaah waters of Lingga, Riau Archipelago. This study aims to determine the effect of red LED lamp attractors on the fish catches of pots and identify the fish species. This study was conducted in the waters of Pena\u27ah Village, Senayang District, Lingga Regency, Riau Islands, using an experimental method. Data were collected from 18 pots for 18 days. There were three treatments, namely pot without using bait as a control, pot with red LEDs light, and pot with red LEDs light and bait, in which a total of six units of pots on each treatment. The pots caught 18 groupers during the study, of which nine individuals were captured by the pot with a red LED and bait, five individuals by the pot with a red LED pot, and four individuals without bait. The effectiveness analysis showed that the pot with red LED and bait was the highest (50%), the pot with red LED had a value of 28%, and the lowest was trapped without bait with an effectiveness value of 22%. The total catches of the pot based on the economic fish showed that adding a red LED attractor gave more types of catch than control. The red LED attractor is expected to be a solution to increase the effectiveness of the pot