The Commercial Fish Catch of California for the Years 1943 and 1944.Staff of the Bureau of Marine FisheriesDrift and Set Line Fishing Gear in California.W. L. Scofield

1948 ◽  
Vol 23 (1) ◽  
pp. 64-64
Keyword(s):  
Fishing Gear ◽  
Commercial Fish ◽  
Fish Catch

scholarly journals PENGEMBANGAN LAMPU BAWAH AIR SEBAGAI ALAT BANTU PADA BAGAN TANCAP DI DESA TAMBAK LEKOK KECAMATAN LEKOK PASURUAN

2016 ◽  
Vol 9 (1) ◽  
pp. 7
Author(s):  
F Fuad ◽  
S Sukandar ◽  
Alfan Jauhari
Keyword(s):  
Fishing Gear ◽  
Total Catch ◽  
Fish Catch ◽  
To Come ◽  
Almost All

<p><em>DEVELOPMENT OF UNDER WATER LAMP AS A TOOL TO LIFT NET IN TAMBAK LEKOK VILLAGE PASURUAN</em></p><p><em><br /></em></p><p><em>Bagan is one type of fishing gear that uses light to collect fish. The lights are expected to stimulate the fish to come and stay around the light and than arrested with net. The use of light for fishing is growing rapidly, almost all fishing gear to use light as a tool for collecting fish. Application of this technology aims to increase fish catch fishermen in District Lekok through the application of technology underwater lamp with LED. Underwater lamp applied to the bagan tancap with a certain intensity and color to find the intensity of light and color that give the best catches. Best catches in the light of 450 lux is capable of delivering the highest total catch of 254 kg, it is supported by the values of illumination of 1.5 lux at a distance of 5 m. Types of fish that were caught on as much as 23 step chart types where the type of Stolephorus spp, Selaroides spp, Leiognathus spp, Loligo sp, Rastrelliger spp is a type of fish that always caught each fishing operation.</em></p><p> </p><p><strong>Keywords</strong>:<em> auxilary, development, lamp, Lekok, lift net </em></p><p align="center"><strong> </strong></p><p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p><em>Bagan merupakan salah satu jenis alat tangkap yang menggunakan lampu sebagai alat bantu pengunpul ikan. Cahaya lampu diharapkan </em><em>dapat merangsang ikan untuk datang dan berkumpul disekitar sumber cahaya sampai pada suatu catchable area tertentu, lalu penangkapan dilakukan dengan alat jaring maupun pancing. Penggunaan lampu untuk penangkapan ikan saat ini berkembang pesat, hampir semua alat tangkap menggunakan lampu sebagai alat bantu pengumpul ikan. </em><em>Aplikasi teknologi ini bertujuan untuk meningkatkan hasil tangkapan ikan nelayan bagan tancap di Kecamatan Lekok melalui penerapan teknologi lampu celup bawah air berbasis lampu LED. Lampu celup bawah air diterapkan pada bagan tancap dengan intensitas dan warna tertentu untuk mencari intensitas cahaya dan warna yang memberikan hasil tangkapan yang terbaik. </em><em>Hasil tangkapan ikan yang terbanyak adalah pada lampu 450 lux yang mampu memberikan total tangkapan terbanyak 254 kg, hal ini didukung dengan nilai nilai illuminasi sebesar 1,5 lux pada jarak 5 m. Jenis ikan yang tertangkap pada bagan tancap sebanyak 23 jenis dimana jenis ikan teri (</em><em>Stolephorus</em><em> spp), ikan selar (Selaroides spp), ikan pepetek (Leiognathus spp ), cumi – cumi (Loligo sp), ikan kembung (Rastrelliger spp) merupakan jenis ikan yang selalu tertangkap disetiap operasi penangkapan.</em> <em></em></p><p> </p><p><strong>Kata kunci</strong>: a<em>lat bantu, bagan tancap, lampu, Lekok, pengembangan</em></p>

Length – Weight Relationships of 12 Commercial Fish Species Caught with Static Fishing Gear in the N. Ionian Sea (Greece)

2020 ◽  
Vol 36 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Athanasios Evagelopoulos ◽  
Ioannis E. Batjakas ◽  
Efthimios Spinos ◽  
Vasileios Bakopoulos
Keyword(s):  
Fish Species ◽  
Fishing Gear ◽  
Ionian Sea ◽  
Commercial Fish

scholarly journals ON THE QUESTION OF FISHERY REGIME REGULATION IN THE VOLGA-CASPIAN BASSIN (ASTRAKHAN REGION) BY THE EXAMPLE OF NORTH-CASPIAN ROACH

2018 ◽  
pp. 41-48
Author(s):  
Vitaliy Victorovich Barabanov ◽  
Sergey Yurievich Nikiforov
Keyword(s):  
Hydrological Regime ◽  
Fishing Effort ◽  
Major Purpose ◽  
Spawning Grounds ◽  
Commercial Fish ◽  
Factors Affecting ◽  
Fish Catch ◽  
And Gender ◽  
Negative Factors ◽  
Caspian Roach

The article shows the assessment of fishing conditions of roach catches (the number of fishing grounds, fishing gears, catches, catches per unit of fishing effort, fishing intensity, etc.) at the main fishery objects of the Volga delta. There has been made the analysis of structure of size and gender composition of roach from commercial and amateur catches. The results have shown a depression of the population with negative dynamics in future. There have been determined main negative factors affecting the state of roach stock: unfavorable hydrological regime, incoordination in terms of commercial and amateur catches, limits of catch and size. In such circumstances the major purpose is to create a fishing regime, when maximum pass of fish spawners to spawning grounds is provided. The article proposes organizing a special regime of fishing roach with the aim to introduce additional limitations to the commercial fish catch, the main point of which is a transition from fine-meshed seines to medium-meshed seines in the day, when the water level in the Astrakhan region achieves an index mark as 350 cm. This measure will allow assuring a maximum pass of roach spawners to spawning grounds. A similar interdiction must be valid for amateur fishing. It should be noted that this interdiction is a provisional measure allowing to preserve and reproduce roach population.

scholarly journals STATUS KEBERLANJUTAN PERIKANAN BAGAN PERAHU BERBASIS BIO-EKONOMI DI DESA TONIKU KABUPATEN HALMAHERA BARAT

2019 ◽  
Vol 11 (1) ◽  
pp. 181-190
Author(s):  
Irwan Abdu Kadir ◽  
Adi Noman Susanto ◽  
Amirul Karman ◽  
Iinpuspita Ode Ane
Keyword(s):  
Fish Larvae ◽  
Economic Value ◽  
Survey Method ◽  
Fishing Gear ◽  
Economic Aspects ◽  
Study Objective ◽  
Study Results ◽  
Fish Catch ◽  
Business Profit ◽  
By Catch

ABSTRAKNelayan di Desa Toniku Kabupaten Halmahera Barat, awalnya menggunakan bagan perahu untuk menangkap ikan teri Stolephorus sp. sebagai umpan perikanan pole and line, akan tetapi pada saat ini banyak tertangkap selain teri yaitu juvenil dan larva ikan, ini permasalahan yang perlu dikaji komposisi tangkapan dari bagan perahu. Tujuan penelitian  adalah  menganalisis komposisi tangkapan, by-cacth, discard, dan aspek ekonomi. Penelitian  dilaksanakan di perairan desa Toniku Kabupaten Halmahera Barat, dari tanggal 1 sampai 9 Juni 2018. Metode penelitian adalah metode survei. Obyek penelitian yaitu ikan hasil tangkapan bagan perahu. Hasil penelitian menunjukkan bahwa tangkapan bagan perahu didominasi oleh ikan target tangkap, yaitu; ikan teri (Stolephorus sp) sebesar 86,295%, tangkapan sampingan  12,335% dan tangkapan yang dibuang 1,370%. Tangkapan sampingan didominasi ikan  peperek (Leiognatus sp) yaitu 5,575%. Nilai keuntungan Usaha bagan perahu sebesar Rp 93.047.200,00/tahun dengan B/C ratio 2,96. Berdasarkan perbandingan antara target tangkap dengan by-catch dan discard, bagan perahu di Desa Toniku Kabupaten Halmahera Barat dikategorikan alat tangkap ramah lingkungan dan secara finansial menguntungkan dan layak dikembangkan (berkelanjutan). Walaupun discard rate pada bagan perahu rendah namun usaha-usaha untuk meminimumkan tetap perlu dilakukan. Salah satu usaha yang bisa dilakukan adalah sortir, dan hasil tangkapan yang tidak memiliki nilai ekonomis dibuang ke laut dalam keadaan masih hidup. ABSTRACTFishermen in Toniku Village, West Halmahera Regency, initially used a boat lift net to catch anchovy Stolephorus sp. As bait for pole and line fisheries, but at this time many were caught besides anchovy, namely juvenile and fish larvae, these are problems that need to be studied from the boat lift net. The study objective was to analyze the composition of catchs, by-catch, discard, and economic aspects. The research was carried out in the waters of Toniku village, West Halmahera Regency, from June 1 to 9, 2018. The study method is the survey method. The object of the research is the fish catch by the boat lift net. The study results show the catch of the boat's lift net was dominated by main catch, namely; anchovy (Stolephorus sp) is 86.295%, by-catch 12.335% and discard 1.370%. The bay-catch  is dominated by peperek (Leiognatus sp) which is 5.575%. Value of the boat lift net business profit of Rp. 93,047,200.00/year with B/C ratio 2.96. Based on the comparison between catch targets and by-catch and discard, the boat lift net in Toniku Village, West Halmahera Regency is categorized as environmentally friendly and financially profitable and feasible (sustainable) fishing gear. Although the discard rate on the boat chart is low, efforts to minimize it still need to be done. One effort that can be done is sorting, and catches that have no economic value are dumped into the sea while still alive.

Description of the commercial fish catch in Iraqi marine waters

2014 ◽  
Vol 25 (2) ◽  
Author(s):  
K Younis ◽  
A Jabir ◽  
U Yousif ◽  
T Abd-Rassol
Keyword(s):  
Marine Waters ◽  
Commercial Fish ◽  
Fish Catch

scholarly journals Physical Oceanographic Influences on Central Benguela Fish Catch

2012 ◽  
Vol 16 (6) ◽  
pp. 1-15 ◽  
Author(s):  
Mark R. Jury
Keyword(s):  
Vertical Motion ◽  
Principal Component ◽  
Ekman Transport ◽  
Commercial Fish ◽  
Benguela Upwelling ◽  
Fish Catch ◽  
Composite Maps ◽  
Catch Rates ◽  
Eggs And Larvae ◽  
High Fish

Abstract Ocean and atmosphere reanalysis fields are used to study environmental conditions and their relation to commercial fish catch in the central Benguela upwelling zone, using both targeted and objective techniques. Composite maps and sections indicate a 10%–20% weakening of southeasterly winds, a 0.5°C warming of sea temperatures over the shelf, and changes in currents and subsurface upwelling associated with higher fish catch. During periods of high fish catch, recirculating gyres form that may aid the retention of eggs and larvae. Offshore winds contribute to poleward Ekman transport in a 50-m-deep layer within 100 km of the coast. In addition to composite analysis, the natural variability is studied by principal component analysis of wind stress, sea level, temperature, salinity, currents, and vertical motion in the period 1970–2007. Comparison of interannual time scores and fisheries data indicate that anomalous poleward winds and warmer temperatures in the Lüderitz plume, driven by an atmospheric trough in the South Atlantic, are associated with higher catch rates.

scholarly journals KAJIAN USAHA PUKAT CINCIN (PURSE SEINE) BERBASIS PENDARATAN DI MALUKU TENGAH

2017 ◽  
Vol 2 (1) ◽  
pp. 57
Author(s):  
Ralph Thomas Mahulette ◽  
Wijopriono Wijopriono
Keyword(s):  
Swot Analysis ◽  
Secondary Data ◽  
Purse Seine ◽  
Primary Data ◽  
Fishing Gear ◽  
Mathematical Function ◽  
Vessel Size ◽  
Production Factors ◽  
Fish Catch ◽  
Purse Seine Fishery

Penelitian terhadap perikanan pukat cincin di Maluku Tengah telah dilakukan pada tujuan mengkaji faktor-faktor produksi yang berpengaruh dan menetapkan strategi pengembangan usaha. Data primer dikumpulkan melalui wawancara dengan pelaku atau nelayan dan pengusaha menggunakan kuesioner, sedangkan data sekunder di dapat langsung dari kantor Dinas Perikanan dan Kelautan, Pelabuhan Perikanan Nusantara. Hubungan antara faktor-faktor produksi dan produksi direpresentasikan sebagai fungsi Cob Douglass. Kelayakan usaha dievaluasi berdasarkan pada analisis SWOT. Hasil penelitian menunjukkan bahwa ukuran kapal, anak buah kapal, ukuran alat tangkap, dan harga bahan bakar minyak, sangat berpengaruh terhadap produksi tangkapan. Peluang bagi perkembangan produksi adalah masuknya para investor baru. Strategi alternatif untuk pengembangan perikanan pukat cincin dikaji dan dibahas dalam tulisan ini.Research on the purse seine fishery has been done in Central Mollucas,aiming at assessing production factors that influenced fish catch and defined development strategies for the fishery. Primary data was collected through interview by using questionnaire, while secondary data was collected from the Marine Affair and Fisheries Service and also from Fishing Port in Ambon. Relationships between production factors and fish catch represented as mathematical function of Cob Douglass. Business feasibility was evaluated using SWOT analysis. Results of study showed that vessel size, crews, fishing gear size, and fuel consumptionwere significantly influenced the fish catch. The opportunity for development of the fishery is coming from settlement of new investment. Alternative strategies for developing purse seine fishery were assessed and discussed in this paper.

scholarly journals Pengaruh ekstrak udang pada umpan terhadap hasil tangkapan pancing dasar di perairan Tateli Weru, Kabupaten Minahasa

2016 ◽  
Vol 2 (3) ◽  
Author(s):  
Ucha E. Janis ◽  
Alfret Luasunaung ◽  
Lefrand Manoppo
Keyword(s):  
Experimental Method ◽  
Coastal Waters ◽  
Scientific Information ◽  
Demersal Fish ◽  
T Test ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Fish Catch

ABSTRACT The success of baited hook and line fishing gear is determined by the activity of fish in terms of finding and catching food. Adding shrimp extract on bait may increase the fishing power of the bait; but this kind of scientific information, particularly on the bottom hand line is not widely available. This study aimed to determine the effect of shrimp extracts on demersal fish catch in the surrounding fishing ground and to identify the species caught by the bottom hand line. This research was conducted in coastal waters Tateli Weru Village, District of Mandolang, Minahasa in October 2015 which was based on an experimental method. Six units of bottom hand line was operated, where three units using bait of scad mackerel marinated in shrimp extract, and three other units using plain bait of scad mackerel; and the data were analyzed using t-test. Total catches was 60 fish; 38 fish caught by bait with shrimp extract, and 22 fish caught by bait without shrimp extract. The results showed that use of bait with shrimp extract give more catches. Keywords: bottom hand line, extrack of shrimp, demersal fish, Tateli Weru   ABSTRAK Keberhasilan alat tangkap pancing dasar berumpan sangat ditentukan oleh aktivitas hidup ikan dalam hal mencari dan menangkap makanan. Pemberian ekstrak udang pada umpan diduga dapat meningkatkan kemampuan tangkap dari umpan; namun informasi ilmiah seperti ini, khususnya pada pancing dasar belum banyak tersedia. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak udang terhadap hasil tangkapan ikan demersal di sekitar daerah penangkapan dan mengidentifikasi jenis ikan hasil tangkapan pancing dasar. Penelitian ini dilakukan di perairan pantai Desa Tateli Weru, Kecamatan Mandolang Kabupaten Minahasa  pada bulan Oktober 2015 yang didasarkan pada metode experimental. Enam unit pancing dasar dioperasikan, di mana tiga unit menggunakan umpan ikan malalugis yang direndam dalam ekstrak udang, dan tiga unit lainnya hanya menggunakan umpan ikan malalugis tanpa ekstrak; dan data dinalisis dengan uji t. Tangkapan total berjumlah 60 ekor; 38 ekor tertangkap dengan umpan yang diberi ekstrak udang, dan 22 ekor tertangkap dengan umpan tidak memiliki ekstrak udang. Hasil analisis menunjukkan bahwa penggunaan ekstrak udang pada umpan memberikan hasil tangkapan yang lebih banyak. Kata-kata kunci: pancing dasar, ekstrak udang, ikan demersal, Tateli Weru

scholarly journals ANALISIS FAKTOR PRODUKSI ALAT TANGKAP PAYANG DI PELABUHAN PERIKANAN PANTAI CAROCOK TARUSAN KABUPATEN PESISIR SELATAN SUMATERA BARAT

2020 ◽  
Vol 1 (2) ◽  
pp. 25-30
Author(s):  
Junaidi Alvi Rahmah
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Regression Function ◽  
Production Factor ◽  
Fishing Gear ◽  
Left Wing ◽  
Statistical Application ◽  
Fish Catch ◽  
Left And Right ◽  
Positive Effect

Payang is one of fishing gear commonly used by fisherman after lift net at Pelabuhan Perikanan Pantai (PPP) Carocok Tarusan of Pesisir Selatan District. This research aims to describe the catch unit of payang and analyze what factors affect production that produced by Payang. This research used census method by taking data of all Payang fishing gear at PPP Carocok Tarusan. The anlyze used as multiple linear regression and data processing entirely used statistical application SPSS version 22.0 with Enter method. Payang fishing gear at PPP Carocok Tarusan is operated by boat 5 GT and payang construction on left wing (left and right) is 20-25 meters, the net body is 10-20 meters, cod end as the spot for collecting fish catch has 5-8 meters, head rope and ground rope is 100 meters, and selambar strap for drawing fishing gear has 200 meters in lenght. Based on results processed with SPSS were obtained equation of multiple linear regression function on Payang fishing gear at PPP Carocok Tarusan as follow: Y = -58.747 + 11.625X1 + 4.707X2 - 13.244X3 - 1.644X4 + 5.915X5 + 23.693X6. Analysis of t-test showed that production factor of Payang fishing gear which has positive effect on the catch result are the length of trip on fishing (X1), the amount of fuel (X2), and setting (X6). Keywords: Payang, factors of production, regresi berganda, pesisir selatan

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