scholarly journals TINGKAT PENGELOLAAN IKAN TEMBANG (Sardinella gibbosa) YANG TERTANGKAP DENGAN BAGAN TANCAP DI KABUPATEN PANGKEP

2020 ◽  
Vol 3 (2) ◽  
pp. 151-160
Author(s):  
Handayani Pratiwi B ◽  
Muhammad Jamal Alwi ◽  
Danial Sultan
Keyword(s):  
Fishing Effort ◽  
Utilization Rate ◽  
Fishing Gear ◽  
Sufficient Knowledge ◽  
The North ◽  
Sardinella Gibbosa ◽  
Fish Catch ◽  
Administrative Area ◽  
Fixed Line ◽  
Fishing Area

The success of fishing depends on sufficient knowledge of the overall behavior of the fish, which is the basis for the development of existing methods. Utilization of Fishery Potential Activities in Pangkep Regency waters still depends a lot on simple fish catching technology. One of the factors for the success of catching fish with a chart is light. Light is a tool to help collect fish to the fishing area. Toli-toli village, Tekkolabua sub-district, Pangkep district is geographically located between 04º79'07.71 "- 4º79'14.35" LS and 119º43'75.13 "- 119º44'02.01" East Longitude (Figure 4). The administrative area is included in the North Liukang Tupabbiring District, Pangkep Regency. The production of tembang fish (S. gibbosa) caught with fixed-line fishing gear occurred in 2012 as much as 927.70 tons and the lowest was in 2009 as many as 50.30 tons. The level of utilization (TP) and level of cultivation (TPu) of fixed-line fisheries in Pangkep waters according to the Schaefer model for 8 years has exceeded the allowable utilization rate (JTB), namely in 2011, 2012, 2013, and in 2008, 2009 , 2010, 2014 and 2017 are still in an underexploited condition. Based on the analysis of the sustainable potential of tembang fish using the Schaefer model, the allowable amount of tembang fish catch (JTB) is 80% of the MSY value, it is recommended that the number of fish catches allowed in Pangkep Regency is 409.36 tons with a maximum number of fishing effort units of 26 units / year.

scholarly journals Fishers and whales in Iceland

2022 ◽  
Vol 22 (1) ◽  
pp. 111-128
Author(s):  
Charla J. Basran ◽  
Marianne H. Rasmussen
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Humpback Whale ◽  
Fishing Effort ◽  
Humpback Whales ◽  
Mitigation Measures ◽  
Fishing Gear ◽  
The North ◽  
New Information ◽  
Feeding Habitat

In Iceland, as in many places globally, the detrimental impacts of whale interactions with fishing gear on both fisheries and whales are not well understood and managed. This study conducted anonymous questionnaires of Icelandic fishers and interviews of capelin purse seine boat captains to gather first-hand knowledge of the issues fishers face due to whale interaction with their fishing gear. Results suggest that the humpback whale is the large whale species that is most often entangled or encircled in fishing gear and causing damage, however on occasion other large whale species are interacting with gear as well. Interactions between humpback whales and fishing gear appears to be primarily concentrated in the north/northeast and southwest of the country where there is high fishing effort and known humpback whale feeding habitat. Humpback whale interactions with gear occurred most often with capelin purse seines, which are targeting humpback whale prey, and data suggests that bycatch of whales in this fishery may be underreported. Damage and losses due to whale collisions with gear were reported to cost fishers up to 55.000.000ISK, suggesting this can be a costly issue for which mitigation measures should be explored. The use of acoustic “pingers” is one mitigation measure that has been previously tested by capelin purse-seiners and is something that captains indicated they would be interested in continuing to try. The creation of a whale entanglement/whale-gear interaction reporting system in Iceland would aid in gathering more data and quantifying how often these events are witnessed and what the consequences of these events are to both the fishers and the whales. This study provides new information about the consequences of large whale interactions with Icelandic fisheries and suggests that future collaboration with fishers can provide insight contributing to best management practices for sustainable fishing and whale conservation.

Preliminary observations on abundance and distribution of fish fauna in a canyon of the Bay of Biscay (ICES Division 8c)

2021 ◽  
pp. 1-10
Author(s):  
G. Diez ◽  
L. Arregi ◽  
M. Basterretxea ◽  
E. Cuende ◽  
I. Oyarzabal
Keyword(s):  
Deep Sea ◽  
Basque Country ◽  
Fish Fauna ◽  
Fishing Effort ◽  
Fishing Gear ◽  
Clear Trend ◽  
Depth Ranges ◽  
Abundance And Distribution ◽  
Sea Fish ◽  
Distribution Of Fish

Abstract The changes in abundance and biodiversity of deep-sea fish fauna are described based on an annual deep-water longline survey with data collected during the period 2015–2019 in the Basque Country continental Slope (ICES Division 8c). The sampling scheme included hauls in four 400 m strata, from 650–2250 m deep. The DST sensors installed in the main line have allowed us to set an accurate soak time for each haul, and they were used to calculate fishing effort and CPUE by haul. The catchability of the fishing gear indicated that 15% of the total hooks deployed in the five-year period were able to fish, and that the bottom longline was very effective in fishing a wide number of different species in all depth ranges. The fishing gear caught 14 different species of sharks (13 deepwater and one pelagic), two chimaeras and nine teleosts. The abundance and biomass registered on the hooks attached to the bottom were between three and four times higher than in the floating sections, and the highest CPUE and biomass were recorded between 1051–1450 m, from 2015 to 2017, and in the 1451–1850 m strata, but they do not show any clear trend throughout the five years of the series.

scholarly journals A first appraisal of the landing and mechanism of the Santos fishery

1960 ◽  
Vol 11 (1) ◽  
pp. 05-85 ◽  
Author(s):  
I. D. Richardson ◽  
M. N. de Moraes
Keyword(s):  
Fishing Gear ◽  
Important Species ◽  
Fishing Area ◽  
Important Fish

This paper summarizes and analyses the landing data collected at Santos, Brazil, during the 12 months period, July 1958-June 1959. These data are given in terms of weight landed of the more important fish and shrimp and also in terms of value. The distribution of the landings of each of the more important species is shown both according to the type of fishing gear used and fishing area. The fishing area is given in the form of statistical rectangles of 60 miles square. The landings are broken down to obtain a figure for the landing per hour of fishing for each species, for each gear and for each rectangle fished. This figure of landing per unit fishing time is used to compare one area with another, one gear with another, and one month with another for each of the important species. In this way, comparisons of the available density of a species by time, area and fishing gear are made.

scholarly journals Sustainable Potential of Tuna Fishery Around the Waters of North Sulawesi Province Based on Data from the Bitung Ocean Fisheries Port (PPS)

2019 ◽  
Vol 10 (1) ◽  
pp. 18
Author(s):  
Donald H. Simanjuntak ◽  
Lawrence J. L. Lumingas ◽  
Joudy R. R. Sangari
Keyword(s):  
Secondary Data ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Production Model ◽  
Utilization Rate ◽  
Sustainable Yield ◽  
North Sulawesi ◽  
Surplus Production Model ◽  
Tuna Fishing ◽  
Tuna Fisheries

This research was conducted in the city of Bitung, North Sulawesi Province with activities centered on the Bitung Ocean Fisheries Port (PPS), which began from mid March to April 2019. The fishing activities studied are using the fishing areas around the waters of  North Sulawesi Province namely the Sulawesi Sea and The Maluku Sea which are included in WPP 715 and 716 based on tuna catch landed data on PPS Bitung. The purpose of this study was to analyze the value of sustainable potential by looking at the level of utilization and Maximum Sustainable Yield (MSY) of tuna in the waters around North Sulawesi Province based on a surplus production model approach (Schaefer Model). This research is expected to be used as a consideration in the management of tuna stocks around the waters of North Sulawesi Province, and can be used as a basis for further research. This study uses a secondary data collection method in the form of fishery statistics documents. The data used are data from tuna fishing and fishing (effort), from 2014 to 2018 (5 years). The results showed that the sustainable potential of tuna fisheries around the waters of North Sulawesi Province based on North Sulawesi PPS data indicated that, the sustainable potential value of tuna that could be caught was 14,173.51 tons / year which is counted as 80% of the value of tuna resources around the waters of North Sulawesi Province. PPS Bitung data which amounted to 17,716.15 tons / year for Hmsy, 1,200.15 trips / year for Emsy, with an average CPUE value of 2014-2018 of 19 tons / trip. The level of tuna utilization around the waters of North Sulawesi Province is based on data from PPS Bitung in 2014, 2017 and 2018 which indicate that there were indications of overfishing with the largest utilization rate in 2014 which reached a value of 155.09%.Keywords: tuna, Bitung, Bitung PPS, sustainable potential, MSY. ABSTRAKKegiatan penelitian ini berlangsung di Kota Bitung, Provinsi Sulawesi Utara dengan kegiatan berpusat di Pelabuhan Perikanan Samudera (PPS) Bitung, yang dimulai  dari pertengahan bulan Maret hingga bulan April 2019. Aktivitas perikanan tangkap yang ditelaah berlangsung di sekitar perairan Provinsi Sulawesi Utara yaitu Laut Sulawesi dan Laut Maluku yang masuk ke dalam WPP 715 dan 716 berdasarkan data tangkapan tuna yang didaratkan di PPS Bitung. Tujuan dari penelitian ini adalah untuk menganalisis nilai potensi lestari dengan melihat tingkat pemanfaatan dan maximum sustainable yield (MSY) ikan tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan pendekatan model produksi surplus (Model Schaefer). Penelitan ini diharapkan dapat digunakan sebagai bahan pertimbangan dalam pengelolaan stok ikan tuna di sekitar perairan Provinsi Sulawesi Utara, serta dapat digunakan sebagai dasar untuk penelitian selanjutnya.  Penelitian ini menggunakan metode pengumpulan data sekunder berbentuk dokumen. Data yang diambil adalah data tangkapan ikan tuna dan upaya penangkapan ikan atau effort (trip), dari tahun 2014 sampai dengan 2018 (5 Tahun). Hasil penelitian menunjukkan potensi lestari perikanan tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan data PPS Bitung Sulawesi Utara nilai potensi lestari tuna yang bisa ditangkap adalah 14.173,51 ton/tahun 80% dari nilai pemanfaatan sumber daya perikanan tangkap tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan data PPS Bitung yang sebesar 17.716,15 ton/tahun untuk Hmsy, 1.200,15 trip/tahun untuk Emsy, dengan nilai CPUE rata-rata tahun 2014-2018 sebesar 19 ton/trip. Tingkat pemanfaatan tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan data PPS Bitung Sulawesi Utara di tahun 2014,2017 dan 2018 sudah yang menandakan adanya indikasi overfishing dengan tingkat pemanfaatan terbesar di tahun 2014 yang mencapai nilai 155,09%.Kata Kunci: ikan tuna, Bitung, PPS Bitung, potensi lestari, MSY.

scholarly journals THE MINI SEINER FLEET OF THE NORTH JAVA COAST: A Case Study of Their Fishing Activities

2017 ◽  
Vol 5 (1) ◽  
pp. 39
Author(s):  
Jean Marc Ecoutin ◽  
Dharmadi Dharmadi
Keyword(s):  
Fishing Effort ◽  
The North

Fishing effort is often a difficult parameter to identify in halieutic st,udies and even more so if the study involves coastal and artisanal frshing spread along a coast more than 1,000 km long.

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>

scholarly journals ANALISIS ASPEK TEKNIS KAPAL PUKAT CINCIN (PURSE SEINE) DAN ALAT TANGKAP YANG DIGUNAKAN NELAYAN DI PERAIRAN TELUK BONE

2020 ◽  
Vol 3 (2) ◽  
pp. 226-238
Author(s):  
Hawati Hawati ◽  
Angkasa Putra
Keyword(s):  
Survey Methods ◽  
Secondary Data ◽  
Purse Seine ◽  
Primary Data ◽  
Fishing Gear ◽  
Technical Aspects ◽  
Fish Resources ◽  
Trawl Fishing ◽  
Fisheries Regulation ◽  
Fishing Area

The utilization of fish resources by fishermen in the waters of Bone Bay uses different fishing gear and patterns as well as different utilization and management policies. This can affect the sustainability of existing fish resources, one of which is in the Bone Regency area. This study aims to analyze the technical aspects of purse seine and fishing gear used by fishermen in the waters of Bone Bay, especially in Bone Regency. Furthermore, the technical aspects of the vessel and fishing gear as a result of the calculation are compared with the provisions stipulated in the PERMEN-KP Number 71 of 2016 to determine the zone of the fishing area. This research was conducted in Panyula Village, which is the fishing base area of purse seine fishermen and the waters of Teluk Bone, starting from November 2016 to March 2017. This research uses a combination of survey methods and case studies. The type of data used consists of primary data and secondary data. Based on the technical aspects of purse seine vessels, ring trawl fishing gear and FAD fishing tools, purse seine units should be operated on Fishing Route II and Fishing Route III in accordance with Minister of Marine Affairs and Fisheries Regulation Number 71 of 2016.

Grenadiers of the World Oceans: Biology, Stock Assessment, and Fisheries

2008 ◽  
Keyword(s):  
Stock Assessment ◽  
Average Length ◽  
Total Body Length ◽  
Fishing Effort ◽  
Long Distance ◽  
Northwest Atlantic ◽  
Northeast Atlantic ◽  
The North ◽  
Mid Atlantic Ridge ◽  
Total Body

<em>Abstract</em>.—Total body length of roundnose grenadier <em>Coryphaenoides rupestris </em>reaches 123 cm at maximum observed age of 30 years. In the Northwest Atlantic, predominating length is 50–70 cm, in the area of Mid-Atlantic Ridge and off Europe, 50–90 cm. Average length at maturity is 76 cm. Main spawning takes place in the Northeast Atlantic in summer-autumn. Mean fecundity is 30,000 eggs. Grenadier occur mainly near the bottom, but somtimes in the pelagic layer. Vertical migrations are very variable. Long distance horizontal migrations of adults have not been recorded. There is no consensus about population structure. In the Northwest Atlantic the greatest catch (83,700 t) was taken in 1971. Since then the fishery declined until it was stopped completely. On the Mid-Atlantic Ridge, the maximum catch (29,900 t) was taken in 1973, after which catches decreased. In the last 15 years, in the European waters, catches increased and reached 28,900 t in 2004. In the majority of the areas the stock size is at the low level. In the Northeast Atlantic (including the Mid-Atlantic Ridge) the fishery is regulated by NEAFC by the restriction of fishing effort and closed areas. In the Northwest Atlantic, directed fishery is banned by NAFO. In the North Atlantic, in the whole fishing period, the international catch amounted to about 1,000,000 t.

scholarly journals Sensing the Same Fishing Fleet with AIS and VIIRS: A Seven-Year Assessment of Squid Jiggers in FAO Major Fishing Area 41

2019 ◽  
Vol 12 (1) ◽  
pp. 32
Author(s):  
Javier Ruiz ◽  
Isabel Caballero ◽  
Gabriel Navarro
Keyword(s):  
Infrared Imaging ◽  
Spatial Scales ◽  
Fishing Effort ◽  
Automatic Identification ◽  
Identification System ◽  
Sources Of Information ◽  
Food And Agriculture ◽  
Food And Agriculture Organization ◽  
High Degree ◽  
Fishing Area

Global Fishing Watch and VIIRS-DNB (visible infrared imaging radiometer suite day/night band) signals are compared for the jigger fleet in FAO (Food and Agriculture Organization of the United Nations) Major Fishing Area 41 during the maximum feasible time span (2012–2018). Both signals have shown a high degree of consistency at all temporal and spatial scales analyzed, including seasonal cycles, lack of signal for some years and interannual tendencies. This indicates that both signals are a fair representation of the fishing effort exerted by the jigger fleet in this zone. The high degree of consistency does not support views questioning satellite AIS (automatic identification system) as a reliable tool to survey fishing activities. Instead, our results add evidence supporting the value of remote sensing, in particular, when independent sources of information (such as VIIRS-DNB and AIS) are combined, as a relevant tool to add transparency and support compliance of fishing activities in vast and distant regions of the ocean.

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