Journal of Marine and Aquatic Sciences最新文献

{"title":"Efek Perbedaan Jenis Rumput Laut Sebagai Agen Fitoremediasi Pada Sistem Budidaya Udang Windu (Penaeus monodon) Semi Intensif","authors":"Hery Irawan, Mahardhika Nur Permatasari, Ahmad Naufal Attaqi","doi":"10.24843/jmas.2023.v09.i02.p16","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p16","url":null,"abstract":"The primary sources of organic waste in prawn ponds include feed waste from the farming process as well as ongoing metabolic activity, such as the production of urine and faeces. The increase in organic waste has an impact on reducing the water quality, one of the solutions is by implementing phytoremediation with seaweed. This research aimed to analyzed the growth and ability of seaweed Sargassum sp., Gracillaria sp., and Caulerpa sp. as phytoremediation agents to reduce organic matter in waters. This research was conducted for 68 days and used an experimental method with a completely randomized design (CRD) with 4 treatments and 3 replications. The treatment are A Sargassum sp., B Gracillaria sp., C Caulerpa sp. and D control. The results indicated that treatment C tended to decrease total organic matter (TOM) and sediment organic matter by 123.74 mg/l and 1.37%, respectively. The result also revealed that Caulerpa sp. the most effective seaweed to be used as phytoremediation organic materials in tiger shrimp farms compared to the two other seaweed species (i.e., Gracillaria sp. and Sargassum sp.). The growth of seaweed showed that there was a significant difference in specific growth of seaweed. The best specific growth rate value in treatment C was 1.37 ± 0.1%. The results of this study shown that Caulerpa sp. has more effective remediate organic matter and improve seaweed growth than Gracillaria sp. and Sargassum sp.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140252700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Karakteristik Biologi dan Kelimpahan Rajungan (Portunus pelagicus) di Sekitar Perairan Sumenep","authors":"Maura Syafa Hafidah, Eka Nurahemma Ning Asih, Ika Masruroh, Moch. Yusuf Kurniawan","doi":"10.24843/jmas.2023.v09.i02.p15","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p15","url":null,"abstract":"The high demand for the crab export market has resulted in the crab commodity experiencing a decline and leading to exploitation. Prediction of crab stocks in Sumenep Regency is minimal due to a need for further information regarding crab data. This study aims to determine the biological characteristics of the blue swimming crab (Portunus pelagicus), limiting blue swimming crab (Portunus pelagicus), and water quality characteristics around Sumenep. Research methods is observation methods or directly contact fishermen. Data collection included blue swimming crab biology, including morphometric aspects, which consisted of measurements of carapace width, carapace length, weight, and level of gonadal maturity. Data collection for water quality parameters used the insitu method at each research location. The results of this study were variations in the morphometric characters of the crabs in the distribution of the carapace width of the male crabs found in class 121-138 mm, as many as 137 individuals, while the female crabs were found in class 121-138 mm as many as 136 individuals, the distribution of size class based on the length of the female crab in class 60 .42-68.42mm as many as 112 people. The size class distribution of male crabs was mainly found in the 51.42-59.42mm class of 96 individuals; the distribution of size classes based on the weight in male crabs in the 126-157 gram class was 65 individuals. The size class of female swimming crabs was found in the 158-189 gram class; as many as 67 individuals applied for crabs around Sumenep. Based on the crab data collection at the first location, Talango was 289 ind/700 cm2, the second location was Tanjung Saronggi, 65 and/700 cm2, and in the third location, Gili Genting, there was as much as 104 ind/700 cm2. The waters of Tanjung Saronggi are a location that has more male crabs than female crabs. The air quality characteristics around Sumenep waters are categorized as optimal for blue swimming crab habitat.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140251910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Aspek Ekobiologi Ikan Kakatua (Scaridae) di Perairan Pulau Tikus Kota Bengkulu","authors":"Ria Ramadhani Dafitri, Zamdial Zamdial, Ayub Sugara","doi":"10.24843/jmas.2023.v09.i02.p17","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p17","url":null,"abstract":"The large potential of marine fisheries owned by the City of Bengkulu can be an economic source for the local community. The fish potential comes from pelagic fish and reef fish. One of the reef fish is the parrot fish (Scaridae). Parrot fish in Bengkulu City are obtained from Tikus Island which are sold on Malabero Beach. The purpose of this study was to analyze the ecobiological aspects of parrot fish (Scaridae) in Tikus Island waters, Bengkulu City. The results of this study are expected to provide information in the form of valid data regarding the ecobiological aspects of parrot fish (Scaridae) in Tikus Island waters, Bengkulu City. In this study, data collection to look at ecological or environmental aspects was carried out by direct observation in the field at 3 stations, while biological aspects, namely food habits (amount/type of food), were observed through a microscope in the laboratory. The results of water parameter measurements, namely the temperature at station 1 ranged from 28-29 0C, station 2 is 29 0C, station 3 is 29 0C. pH value at station 1 is 7.0-7.3, station 2 is 7.3-7.7, station 3 is 6.5-7.1. Salinity values at station 1 is 31 ppt, station 2 is 30 ppt and station 3 is 31 ppt. Dissolved oxygen (DO) at station 1 ranged from 5.6-6.3 mg/L, station 2 5.2-5.3 mg/L and station 3 5.6-6.1 mg/L. The water brightness at station 1 is 9.2 m, at station 2 is 6.6 m and at station 3 is 7.4 m. Current velocity at station 1 ranges from 0.09-0.11 m/s, station 2 are 0.08-0.14 m/s, and at station 3 ranges from 0.05-0.09 m/s. Water depth at station 1 is 9.2 m, station 2 is 7.3 and station 3 is 7.5 m. These results indicate that Tikus Island water have a good environment for survival and habitat of parrot fish (Scaridae) or other marine biota. Furthermore, the biological aspects studied are food habits. Based on the identification results, 4 groups of food types were found in the parrot fish stomach, namely phytoplankton, zooplankton, sand coral, and were not identified. The percentage of food groups found from phytoplankton, zooplankton, sand coral, and not identified were 53%, 3%, 15%, 29%, respectively.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140253409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Komposisi, Keanekaragaman, dan Relung Ekologi Ikan di Plawangan Timur Segara Anakan, Jawa Tengah","authors":"Adinda Kurnia Putri, Andika Dewa, M. Listyani, Laura Rose Sahara, Arif Mahdiana, Rima Oktavia Kusuma, Ahmad Naufal Attaqi","doi":"10.24843/jmas.2023.v09.i02.p09","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p09","url":null,"abstract":"Plawangan Timur Segara Anakan diketahui sebagai ekosistem perairan yang unik yang mendukung kehidupan berbagai organisme akuatik dengan menyediakan daerah asuhan dan mencari makan. Akan tetapi, Plawangan Timur Segara Anakan juga telah banyak dimanfaatkan untuk kegiatan industri dan aktivitas domestik yang berpotensi dapat menurunkan kualitas dan kuantitasnya sebagai ekosistem perairan. Penelitian ini bertujuan untuk menganalisis komposisi, keanekaragaman, dan relung ekologi iktiofauna dari Plawangan Timur Segara Anakan. Sampling dilakukan pada bulan 29 Juni 2023 dan 19 Juli 2023, menggunakan gillnet dengan ukuran mata jaring 1-2 inci. Keanekaragaman iktiofauna dianalisis menggunakan indeks biodiversitas sedangkan distribusi iktiofauna dianalisis menggunakan Cannonical Correspondence Analysis (CCA). Penelitian ini menemukan 120 individu ikan yang terdiri atas 21 spesies, 19 famili dan 11 ordo. Komposisi ikan terdiri atas 18,34% dewasa dan 81,66% yuawana. Ikan yang ditemukan umumnya merupakan ikan penghuni perairan marine-freshwater-brackish hanya ikan Inegocia japonica dan Scomberomorus commerson yang merupakan spesies ikan laut (marine fishes). Indeks keanekaragaman menunjukkan bahwa stasiun Kali Panas memiliki indeks keanekaragaman yang paling tinggi sedangkan indeks keanekaragaman terendah ditemukan di Stasiun Ujung Galang. CCA menunjukkan bahwa umumnya ikan yang dikategorikan sebagai penghuni Marine, Marine-Reef-associated, and Marine, Brackish, Reef-Associated banyak ditemukan di perairan dengan salinitas yang tinggi.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kajian Ikan Terumbu Karang dengan persentase Tutupan Terumbu Karang Hidup di Kawasan Konservasi Perairan Tanjung Labu Kabupaten Bangka Selatan","authors":"Jemi Ferizal, Wahyu Adi, Adisti Hafizah, Fera Angelia, Fajar Hidayatullah Ramadhani, Ervansyah Maulana, H. Hendi, Rama Kristian Fitriyansah, Nadya Syasri Aryani, Jongki Arifandi, Terisna Terisna, Juliana Erika Putri","doi":"10.24843/jmas.2023.v09.i02.p08","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p08","url":null,"abstract":"Aktivitas masyarakat pada Perairan Tanjung Labu seperti bongkar muat, penangkapan ikan, penambangan terumbu karang, dan lainnya. Terumbu karang dan ikan terumbu karang yang terdampak langsung terhadap aktivitas tersebut. Penelitian ini dilaksanakan bulan Juni 2023 di Perairan Tanjung Labu Kecamatan Lepar Bangka Selatan. Tujuan penelitian mengetahui jumlah individu ikan indikator, mayor, target serta hubungan tutupan terumbu karang hidup dengan biomassa. Metode pengambilan data terumbu karang menggunakan UPT (Underwater Photo Transect), dan ikan terumbu karang menggunakan UVC (Underwater Visual Census). Hasil persentase tutupan terumbu karang masuk kategori rusak sedang, kelimpahan ikan terumbu karang kategori sangat jarang. Hubungan persentase tutupan terumbu karang hidup dengan kelimpahan ikan kategori indikator, mayor, target dan biomassa ikan terumbu karang, memiliki hubungan positif dan cukup kuat hingga kuat. Hubungan kelimpahan ikan terumbu karang dengan biomassa, positif sempurna dengan koefisien korelasi sangat kuat. Faktor yang mempengaruhi hubungan antara persentase tutupan terumbu karang hidup dengan kelimpahan dan biomassa ikan terumbu karang yaitu kesediaan makanan dan aktifitas antropogenik. Hubungan kelimpahan dan biomassa ikan terumbu karang berkaitan dengan ukuran panjang dan kelimpahan yang tinggi. Upaya pengelolaan Kawasan konservasi Desa Tanjung Labu di Pulau Lepar, mengurangi aktivitas antropogenik, meningkatkan edukasi, terkait peraturan yang berlaku, Penguatan pengawasan dan penegakan hukum (kelembagaan) serta rehabilitasi terumbu karang.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ikan Nyalian (Barbodes binotatus Valenciennes, 1842) di Danau Tamblingan, Buleleng, Bali Dilihat dari Aspek Makanannya","authors":"M. Pramana, Nyoman Dati Pertami, D. Pebriani","doi":"10.24843/jmas.2023.v09.i02.p10","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p10","url":null,"abstract":"Tamblingan Lake is one of four lakes in Bali which is located in Munduk Village, Banjar District, Buleleng Regency, Bali. Spotted barb (Barbodes binotatus) is a freshwater fish belonging to the Cyprinidae family found in Tamblingan Lake. Information regarding the food composition of spotted barb in Tamblingan Lake has not been carried out. This research aims to determine the food of nyalian fish by observing the composition of the type of food in the Tamblingan Lake Waters. Fish sampling was carried out in January-June 2019 using gill nets with a mesh size of 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 cm with length of 300 m and height of 2 m. Fishing was carried out at five stations with different characteristics. Fish samples obtained during the research were 180 fish. The composition food of spotted barb consists of 37 types of organisms consisting of 6 classes of phytoplankton, 6 classes of zooplankton, 1 class of fungi and 1 class of aquatic plants. Most types of food organisms come from the Bacillariophyceae class, which is 16 genera. Species of Surirella sp., Navicula sp., Cymbella sp., and Pinnularia sp. is a genus of the Bacillariophyceae class which is often found every month of observation with the frequency of occurrence respectively 174, 105, 126 and 112. There was not much difference in food composition between nyalian fish in each month of observation. Spotted barb include omnivorous fish (tend to be herbivores) and classified as euryfagus.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kajian Kajian Standing Stock Ikan Lemuru (Sardinella lemuru) di Perairan Selat Bali Menggunakan Metode Hidroakustik","authors":"I. Y. Pratama, Mutiara Rachmat Putri, A. Setiawan","doi":"10.24843/jmas.2023.v09.i02.p07","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p07","url":null,"abstract":"Selat Bali merupakan daerah perairan yang memiliki sumber daya perikanan, khususnya Ikan Lemuru (Sardinella lemuru), yang melimpah. Namun demikian, nelayan tradisional di Selat Bali menghadapi permasalahan dalam menerapkan teknologi untuk estimasi Standing Stock ikan Lemuru di kedalaman perairan. Tujuan penelitian ini adalah untuk mengetahui estimasi Standing Stock ikan Lemuru dengan metode hidroakustik di Selat Bali. Data penelitian dikumpulkan melalui penangkapan ikan bersama nelayan tradisional Kabupaten Badung sebanyak 3 kali pemberangkatan. Data pengukuran langsung dari lapangan berupa data akustik dengan BlueRobotics Ping Sonar Altimeter and Echosounder. Analisis Target Strength (TS), estimasi panjang ikan, estimasi bobot ikan dan densitas ikan digunakan dalam penelitian ini dan divalidasi dengan membandingkan hasil perhitungan dari data akustik dengan 120 sampel ikan yang diukur di lapangan. Hasil penelitian Target Strength (TS) dari 3 trip penangkapan ikan Lemuru di Selat Bali berada pada kisaran -49,5 dB sampai -40,5 dB dengan estimasi Panjang Ikan (L) pada kisaran 7,94 cm hingga 22,4 cm, dan estimasi bobot ikan 5–112 gram. Total individu ikan yang terdeteksi oleh sensor adalah sebanyak 13.823 ekor dengan rata-rata densitas ikan di area penelitian 4.100 ind/1.000m3. Estimasi total Standing Stock ikan Lemuru dari ketiga trip ini adalah 1040 kg pada area seluas 7,3 km2 atau 142 kg/km2.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kandungan Nutrien Nitrat dan Fosfat Pada Air di Kawasan Estuari DAM, Badung, Bali","authors":"Melani Indah Sari Manik, Ima Yudha Perwira, N. Ernawati","doi":"10.24843/jmas.2023.v09.i02.p11","DOIUrl":"https://doi.org/10.24843/jmas.2023.v09.i02.p11","url":null,"abstract":"Nitrate and phosphate nutrients are important nutrients in waters, but in conditions that exceed the limit will cause problems for the aquatic environment. One of the aquatic environments that has the potential to experience increased nitrate and phosphate content is the DAM Estuary located in Badung, Bali. This study aims to determine the current condition of nitrate and phosphate content in water in the DAM Estuary. Water sampling was carried out at 4 different station. Station 1 represents the inlet of the DAM Estuary, Station 2 and 3 represent the middle part of the DAM Estuary, while Station 4 represents the outlet of the DAM Estuary. Nitrate was measured using Hanna HI 713 Reagent, while Phosphate was measured using Salifert Nitrate KIT Reagent. In addition, temperature, pH, TDS and DO measurements were also carried out in water. The results showed that the nitrate and phosphate content in the water in the DAM Estuary was still below the water quality standard for all classes according to Government Regulation no. 82 of 2001 concerning Water Quality Management and Water Pollution Control. Other water quality parameters also show good conditions in accordance with these regulations.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation Pendugaan CPUE (Catch Per Unit Effort) dan Potensi Maksimum Lestari Ikan Lemuru (Sardinella lemuru) yang Didaratkan di PPN Pengambengan, Jembrana-Bali","authors":"I. G. B. N. A. S. Bhuwana, I. Dharma, Ni Luh Putu Ria Puspitha","doi":"10.24843/jmas.2022.v08.i02.p17","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p17","url":null,"abstract":"Lemuru is one of the highest catches landed in PPN Pengambengan. PPN Pengambengan is a strategic fishery port owned by Jembrana with a function as a center or center for marine fisheries landing. Improvement of fishing technology will be related to the problem of abundance or availability of fishery resoure stocks, so it is necessary to study CPUE, MSY and JTB so that they can utilize the resources with optimal but still maintain its preservation in nature. This research has a purpose, which is to know the tren of CPUE, MSY and JTB of lemuru fish (Sardinella lemuru) landed in PPN Pengambengan. The method used is a quantitative descriptive method using a surplus production analysis from Schaefer. The data used in this study are catch and fleet data from 2014–2019 obtained directly from the PPN Pengambengan office. The results showed the highest CPUE in 2015 amounted to 6,15 tons/fleet, but after that the CPUE tren tended to decline, especially since 2016 while the MSY value was obtained at 9.598,49 tons/year with a maximum sustained effort of 4.545,45 fleets/year. Furthermore, the JTB value is 80% of the MSY value, a figure of 7.678,8tons/year is obtained. This indicates overfishing and over-exploitation in the PPN Pengambengan area. To prevent overfishing and over-exploitation, prevention can be done, such as limiting fishing capacity and effort can also apply fisheries management models, such as co-management and EBFM (eco-based fisheries management).","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47496601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Hubungan Nilai Tukar Nelayan Dengan Jenis Tangkapan Nelayan Di Desa Pengambengan, Kecamatan Negara, Kabupaten Jembrana, Bali","authors":"I. Sekar, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha","doi":"10.24843/jmas.2022.v08.i02.p18","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p18","url":null,"abstract":"This research aims to determine the fishermen’s exchange rate (NTN) and how the catch composition could affect the income of purse sein fishermen in Pengambengan Village. The object of the research is purse sein fishermen in Pengambengan Village, sampling has carried out by using purposive technique, and data was collected using questionnaires and interviews. The method used in this research are the NTN calculation method and multiple linear regression statistical method with hypothesis test, T-tets, F-test, and the coefficient of determination (adjusted R2 Square). The results show in the harvest season, almost all of the fishermen experienced a surplus (NTN above 100), while in the famine season only fishermen with high profit-sharing system experienced a surplus and the other experienced a disadvantage. For both of the two seasons, the fishermen’s catch composition are consist of lemuru, tongkol and layang; base on the T-test results, lemuru catch affect significantly on fishermen’s income during the harvest season, and layang catch affect the income of fishermen in the famine season. somultaneously the catch composition, lemuru, tongkol and layang affect fishermen income compared only 1 type of fish catch, and seen from the Coefficient of Determination by 6,6 % in the harvest and by 7,5 % in the famine season. The fishermen’s income is also influenced by other variables which are not included. in the model.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48723469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}