scholarly journals Catch per unit effort (CPUE) periode lima tahunan perikanan pukat cincin di Kota Manado dan Kota Bitung

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Helmy A. Wurlianty ◽  
Johny Wenno ◽  
Mariana E. Kayadoe
Keyword(s):  
Fishery Management ◽  
Pelagic Fish ◽  
Purse Seine ◽  
Catch Per Unit Effort ◽  
Maximum Production ◽  
Unit Effort ◽  
Fishing Gears ◽  
Fishing Capacity ◽  
The City ◽  
Purse Seine Fishery

ABSTRACT Overfishing is due to increasing fishing capacity through increasing the size of fishing gears and vessels. This research aims to analyze the development of the five-year CPUE and maximum production of purse seine fishery in Manado and Bitung Cities periodically and determine changes in fishing capacity and its influence on CPUE. The results of this study are expected to provide information in the purse seine fishery management in the city of Manado and Bitung. The results of the analysis is the highest CPUE for Bitung occurred in the period 2005-2009, the lowest CPUE occurred in the period 2008-2012 and the highest CPUE for Manado occurred in the period 2008-2012, the lowest CPUE occurred in the period 2006-2010. The highest maximum production Bitung occurred in the period 2008-2012 amounted to 22.083 tons and maximum production of Manado occurred in the period 2006-2010 amounted to 7.855 tons. The number of vessels and their sizes in each five-year period there increased in line with the increase of production. Keywords: catch, effort, purse seine, pelagic fish.   ABSTRAK Penangkapan ikan secara berlebihan terjadi karena meningkatnya kapasitas tangkap yaitu melalui penambahan ukuran alat tangkap dan ukuran kapal. Penelitian ini bertujuan untuk menganalisis perkembangan lima tahunan CPUE maupun produksi maksimum perikanan pukat cincin di Kota Manado dan Kota Bitung secara periodik dan mengetahui perubahan kapasitas tangkap dan pengaruhnya terhadap CPUE. Hasil penelitian ini diharapkan dapat memberikan informasi dalam pengelolaan perikanan pukat cincin di Kota Manado dan Kota Bitung. Hasil analisis yang diperoleh adalah CPUE tertinggi untuk Kota Bitung terjadi pada periode tahun 2005-2009, CPUE terendah terjadi pada periode tahun 2008-2012 dan CPUE tertinggi untuk Kota Manado terjadi pada periode tahun 2008-2012, CPUE terendahnya terjadi pada periode tahun 2006-2010. Produksi maksimum tertinggi Kota Bitung terjadi pada periode tahun 2008-2012 sebesar 22.083 ton dan produksi maksimum Kota Manado terjadi pada periode tahun 2006-2010 sebesar 7.855 ton. Jumlah kapal dan ukuran kapal pada setiap periode lima tahunan meningkat seiring dengan peningkatan produksi. Kata-kata kunci: hasil tangkapan, upaya, pukat cincin, ikan pelagis

scholarly journals Analysis of non-linear relationships between catch per unit effort and abundance in a tuna purse-seine fishery simulated with artificial neural networks

2004 ◽  
Vol 61 (5) ◽  
pp. 812-820 ◽  
Author(s):  
Daniel Gaertner ◽  
Michel Dreyfus-Leon
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Information Exchange ◽  
Purse Seine ◽  
Power Curve ◽  
Catch Per Unit Effort ◽  
Unit Effort ◽  
Code Group ◽  
Artificial Neural ◽  
Purse Seine Fishery

Abstract A simulation study, combining grid- and individual-based approaches, was conducted to analyse the shape of the relationship between catch per unit effort (cpue) and abundance in a tuna purse-seine fishery. To understand the effect of fleet dynamics on the interpretation of cpue, the decision-making process used by fishers while searching for the resource is modelled with artificial neural networks. The cpue of fishers operating independently (i.e. individuals) vs. fishers sharing information (i.e. a code-group) is compared, accounting for different environmental scenarios. The results show that a power curve non-proportional relationship between cpue and abundance performs better than a linear relationship. As the shape parameter of the power curve for the code-group fishers was lower in every scenario than that of individual fishers, we conclude that hyperstability, a phenomenon commonly observed in schooling fisheries, is mainly attributable to information exchange among vessels. Setting the individual-level state variables of the virtual system at a specific spatial and temporal scale may affect the results of the simulations.

scholarly journals Fluktuasi hasil tangkapan mini purse seine yang didaratkan di Pelabuhan Samudra Bitung (Catch fluctuations of mini purse seine landed in Oceanic Fisheries Port, Bitung)

2018 ◽  
Vol 2 (6) ◽  
Author(s):  
Sunarto Sunarto ◽  
Isrojaty Johanes Paransa ◽  
Alfred Luasunaung
Keyword(s):  
Pelagic Fish ◽  
Bony Fish ◽  
Purse Seine ◽  
Catch Per Unit Effort ◽  
Small Pelagic Fish ◽  
Fishing Season ◽  
Unit Effort ◽  
Catch Composition ◽  
Descriptive Method

Fish catches landed in the Oceanis Fisheries Port (OFP), Bitung, are mackerel (Decapterus sp), ray finned bony fish (Euthynus sp), yellowstripe scad (Selaroides sp), and mackerel (Rastrelliger sp). This study used descriptive method and aimed to know the composition and the fluctuation of mini purse seine catches landed in OFP Bitung, to know the catch per unit effort (CPUE), and to analyze the fishing season.  Catch composition in 2012-2016 consisted of Euthynnus spp. (37.30%), Decapterus sp. (27.59%), Selaroides sp. (25.89%), and Rastrelliger sp. (9.22%). The highest total number of catch occurred in 2014 (650.29 tons), then in 2015 (509. 91 ton), and 2016 (338.31 tons). The highest CPUE was recorded in 2012 and 2013, in November and August, respectively. In 2014, the highest occurred in September then December. In 2015, the highest was found in  January then March. In 2016, the highest was recorded in June than October and November. Fishing season in 2012 and 2013 occurred in October and August; In 2014, the highest was in September then December; in 2015, the highest occurred in January, and in 2016, the highest was in June.Keywords; mini purse seine, small pelagic fish, CPUE, fishing season ABSTRAK Hasil tangkapan yang di daratkan di Pelabuhan Perikanan Samudra (PPS) Bitung , adalah ikan layang (Decapterus sp), ikan tongkol (Euthynus sp), ikan selar (Selaroides sp), dan ikan kembung (Rastrelliger sp). Penelitian menggunakan metoda deskriptif, bertujuan mengetahui komposisi dan fluktuasi jumlah tangkapan mini purse seine yang didaratkan di PPS Bitung, mengetahui tingkat upaya penangkapan dengan mini purse seine, menganalisis musim penangkapan ikan dengan mini purse seine yang didaratkan di PPS Bitung.  Komposisi jumlah tangkapan mini purse seine rata-rata Tahun 2012 - 2016 terdiri ikan tongkol (37,30%); ikan layang (27,59%), ikan selar (25,89%) dan ikan kembung (9,22%). Total jumlah tangkapan tertinggi terjadi pada Tahun 2014 (650,29 ton), kemudian Tahun 2015 (509, 91 ton) dan Tahun 2016 (338,31 ton).  tingkat upaya penangkapan ikan (CPUE) dengan mini purse seine Tahun 2012 dan 2013, tertinggi pada bulan November kemudian Agustus; Tahun 2014 tertinggi bulan September kemudian Desember; Tahun 2015 tertinggi bulan Januari kemudian Maret; Tahun 2016 tertinggi bulan Juni kemudian Oktober dan November. Musim penangkapan ikan dengan mini purse seine Tahun 2012 dan 2013 terjadi pada bulan Oktober dan Agustus; Tahun 2014 tertinggi bulan September kemudian Desember; Tahun 2015 tertinggi bulan Januari dan Tahun 2016 tertinggi di bulan Juni.Kata-kata kunci, mini purse seine, pelagis kecil, CPUE, musim penangkapan

scholarly journals ANALISIS SUMBER DAYA PERIKANAN LEMURU (Sardinella lemuru Bleeker 1853) DI SELAT BALI (Analysis of the Sardine Oil (Sardinella lemuru Bleeker 1853) Resources in Bali Strait)

2013 ◽  
Vol 2 (2) ◽  
pp. 165
Author(s):  
Himelda Himelda ◽  
Eko Sri Wiyono ◽  
Ari Purbayanto ◽  
Mustaruddin Mustaruddin
Keyword(s):  
Production Function ◽  
Fishery Management ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Purse Seine ◽  
Catch Per Unit Effort ◽  
Sardine Oil ◽  
Oil Resources ◽  
Fishing Gears ◽  
Current Utilization

<p>Sardine oil (Sardinella lemuru Bleeker 1853) is the one of fish target of fishermen from Banyuwangi and Jembrana who fish in Bali strait. An in-depth study on current utilization rates and over 6 year period is required to obtain information on utilization of the sardine oil. . This study can be used as a guideline in formulating a policy in fishery management to promote sustainable sardine oil resources in Bali Strait. The purposes of this research were to calculate catch per unit effort (CPUE) of fishing gears, determine the standard fishing gears, determine of the production function, and determine feeding habits of sardine oil by analysing the stomach contents. Compared to other fishing gears, CPUE of purse seine has the highest average which made up 332.2032 metric ton per unit. Based on the calculation of the production function, the value of Cmsy was 88,358.71 metric ton per years, and the value of Emsy was 414.601 units. The analysis of the stomach contents showed that sardine oil’s food was plankton which consisted of phytoplankton and zooplankton. During the 6 year period, utilization of sardine oil resources was still allowed, because the highest catch did not exceed Cmsy. However, to sustain the resources, management and regulation in the use of fishing gears, especially purse seine was still needed. It can be done by renewing the joint decree between Governor of East Java and Bali in 1992.</p><p><br /><strong>Key words:</strong> resources analysis, sardine oil fisheries, Bali Strait</p>

scholarly journals MONITORING PERIKANAN LEMURU DI PERAIRAN SELAT BALI

2018 ◽  
Vol 7 (1) ◽  
pp. 130-140
Author(s):  
Satria Wiratama Nugraha ◽  
Abdul Ghofar ◽  
Suradi Wijaya Saputra
Keyword(s):  
Mesh Size ◽  
Regulatory Compliance ◽  
Maximum Sustainable Yield ◽  
Production Model ◽  
Purse Seine ◽  
Catch Per Unit Effort ◽  
Total Allowable Catch ◽  
Unit Effort ◽  
Fishing Gears ◽  
The Status

Perairan Selat Bali merupakan perairan yang berada diantara Pulau Jawa dan Pulau Bali. Perairan ini memiliki sumber daya perikanan pelagis kecil yang melimpah, terutama ikan lemuru. Pendaratan ikan lemuru di Perairan Selat Bali berpusat di UPT PP (Unit Pelaksana Teknis Pelabuhan Perikanan) Muncar, Kabupaten Banyuwangi. Penelitian ini bertujuan untuk mengetahui jumlah dan ukuran kapal, serta alat bantu penangkapan, Catch Per Unit Effort penangkapan, dan pengelolaan  perikanan lemuru di perairan Selat Bali. Penelitian ini dilaksanakan pada tanggal 20 Maret – 21 Mei  2017. Metode yang digunakan adalah observatif. Data yang digunakan adalah data produksi ikan lemuru di  UPT PP Muncar dan PPN (Pelabuhan Perikanan Nusantara) Pengambengan dari tahun 1980-2016, data kapal dan alat tangkap dari tahun 2010-2016. Berdasarkan data tersebut, dilakukan perhitungan Maximum Sustainable Yield (MSY) dengan menggunakan model surplus produksi Gordon Scheafer. Jumlah kapal yang digunakan untuk penangkapan ikan lemuru saat ini adalah 326 armada dengan ukuran 10-30 GT (gross ton) yang didominasi oleh kapal ukuran 29/30 GT . Jumlah kapal 10 – 30 GT di Muncar 190 unit, sedangkan di Pengambengan 136 unit. Alat tangkap yang digunakan adalah purse seine dengan jumlah 326 dengan panjang 180 depa ( ± 338 meter) dan mesh size 0,5 inchi, dengan rata – rata kekuatan mesin 120 – 240 PK, lampu 700 - 1200 watt sebanyak 5 – 12 unit / kapal. Nilai CPUE terendah adalah 0,378 ton/trip, dengan rata – rata 3,43 ton/ trip. Nilai MSY yang didapatkan sebesar 25.107,32 ton/tahun, sementara nilai JTB (Jumlah Tangkapan Diperbolehkan) adalah 20.085,86 ton per tahun. Perairan Selat Bali berada dalam otonomi Pemerintah Provinsi Jawa Timur, dan Provinsi Bali. Sehingga pada tahun 1977 dikeluarkan Surat Keputusan Bersama Gubernur Jawa Timur, dan Gubernur Bali, untuk mengatur sistem penangkapan ikan di Perairan Selat Bali. Surat Keputusan Bersama ini diperbarui beberapa kali, kemudian dikeluarkan Peraturan Menteri Kelautan Perikanan dan Kelautan Nomor 68 Tahun 2016 tentang Rencana Pengelolaan Perikanan  Ikan Lemuru di Wilayah Pengelolaan Perikanan Republik Indonesia.   Bali Strait waters is a located between Java Island and Bali Island. This waters has a lot of pelagic fish resources, especially lemuru fish. Lemuru fisheries centered on UPT PP ( Unit Techic Implementers Fisheries Port) Muncar, Banyuwangi Region. This research goals are to knows the amount of  boat and it size, total fishing gears, Catch Per Unit Effort lemuru fisheries on Bali Strait waters, and know the status of lemuru fishings. This research held on 20 Maret – 21 Mei 2017. The method of the research is observative. The data wich used is the data  production of lemuru fishing on UPT PP Muncar and PPN (Archipelago Fisheries Port) Pengambengan on 1980 -2016, boats data and fishing gears on 2010 – 2016. Based on the data, calculating MSY using surplus production model by Gordon Scheafer. Total boats for lemuru fishes are 326 boats, wich sizes 10-30 GT (gross tonnage) and dominated by 29/30 GT . The boats 10 – 30 GT in Muncar 190 units, event on Pengambengan 136 units. Fishing gears using purse seine wich 326 units, width 180 depa ( ± 338 meters) and mesh size 0,5 inchi, wich average powers 120 – 240 PK, lightning 700 - 1200 watt  5 – 12 units / boats. The value of lowest  CPUE is 0,378 ton/trip, with average is 3,43 ton/trip. The value of MSY is 25.107,32 ton/year, and TAC (Total Allowable Catch) is 20.085,86 ton/year. Bali Strait waters under otonomy by East Java and Bali Government. So, in 1977 formed GRC (Government Regulatory Compliance) by East Java and Bali Government to ruled fisheries systems on Bali Strait waters. This GRC renew few times, and then formed Regulation by Minister of Marine and Fisheries number 68 year 2016 about Plans Management Fisheries of Lemuru Fish in Indonesia Region Management.

Qarun Lake fisheries; Fishing gears, Species composition and Catch per unit effort

2014 ◽  
Vol 18 (2) ◽  
pp. 39-49
Author(s):  
Sabry El-Serafy ◽  
Alaa El-Haweet ◽  
Azza El-Ganiny ◽  
Alaa El-Far
Keyword(s):  
Species Composition ◽  
Catch Per Unit Effort ◽  
Unit Effort ◽  
Fishing Gears ◽  
Lake Fisheries

scholarly journals Interaction between small pelagic purse seine fishery and its top predators

2018 ◽  
Vol 59 (2) ◽  
pp. 185-190
Author(s):  
Barbara Zorica ◽  
Vanja Čikeš Keč ◽  
Kristijan Zanki ◽  
Leon Grubišić ◽  
Tanja Šegvić-Bubić
Keyword(s):  
Preliminary Data ◽  
Negative Impact ◽  
Pelagic Fish ◽  
Purse Seine ◽  
Small Pelagic Fish ◽  
Fish Schools ◽  
Top Predators ◽  
Increasing Trend ◽  
Monthly Pattern ◽  
Purse Seine Fishery

Due to very good collaboration with one commercial purse seiner, using “Srdelara” and operating in fishing zone G, preliminary data concerning the interaction between small pelagic purse seine fishery and its predators were obtained. According to the notes taken by experience observer on-board in period from year 2013 to 2016, seems that tunas, dolphins and swordfish were the faithful companions of purse seiner fisherman with abundance of 68.6%, 22.0% and 9.4%, respectively. Although they were present all year round, their monthly pattern of appearance indicated that less tunas were recorded in May-June, more dolphins were noted from July to October while swordfish were mostly abundant in winter (January-March). Within the investigated period, slightly increasing trend of tuna and dolphins’ appearance was recorded, although statistically not significant. Analysing possible correlation between purse seine catches and predator’s abundances, revealed that appearance of tuna had negative impact on the catches (dispersion of schools), while realised catches in presence of dolphins were quite good so it seems that they tend to round up small pelagic fish schools.

scholarly journals RESPONSIBLE FISHERIES MANAGEMENT OF MINI PURSE SEINE IN THE LAMPUNG BAY AREA

2017 ◽  
Vol 8 (2) ◽  
pp. 713-728
Author(s):  
Yulia Estmirar Tanjov ◽  
Roza Yusfiandayani ◽  
. Mustaruddin
Keyword(s):  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Pelagic Fish ◽  
Purse Seine ◽  
Sustainable Yield ◽  
Catch Per Unit Effort ◽  
Small Pelagic Fish ◽  
Bay Area ◽  
Fisheries Resources ◽  
The Status

Lempasing is a Coastal Fishing Port (CFP) which located in Bandar Lampung. It is one of the centers of fisheries activities in the city. One of the fishing gear which operated by most of fishermen in Lempasing is mini purse seine. Mini purse seine fishing activities in the Lampung Bay Area and Lempasing CFP is not in accordance with the conditions of the surrounding waters area. The research was conducted in the Lampung Bay Area and Lempasing CFP, Lampung. This study aims to: 1) determine the status of fisheries resources utilization, 2) to describe the dominant fish caught by mini purse seine.  Analysis methods were used in this study namely: 1) Fishing Power Index (FPI), Catch Per Unit Effort (CPUE), and Maximum Sustainable Yield (MSY) to determine the status of fisheries resource utilization. The dominant small pelagic fishes caught were scad fish Selaroides sp., mackerel fish Rastrelliger sp., longnose trevally fish Carangoides chrysophrys. The result showed that Fox model was the best fits models with estimated maximum sustainable yield of 15.5 ton and fishing effort of 992 trip/year for mini purse seine. The longnose trevally fish in lampung bay area in do not exceeded the optimal catch fish condition can be used to sustainably. In these condition is necessary to wisely manage and setting the catches to not exceed the allowable catch of the small pelagic fish, so the stock of small pelagic fish in the Lampung Bay Area can be used sustainably.

scholarly journals Fishing Effort and Associated Catch per Unit Effort for Small-Scale Fisheries in the Mozambique Channel Region: 1950–2016

2021 ◽  
Vol 8 ◽  
Author(s):  
Dirk Zeller ◽  
Gabriel M. S. Vianna ◽  
Matthew Ansell ◽  
Angie Coulter ◽  
Brittany Derrick ◽  
...  
Keyword(s):  
Fishing Effort ◽  
Small Scale ◽  
Catch Per Unit Effort ◽  
Important Species ◽  
Small Scale Fisheries ◽  
Mozambique Channel ◽  
Fishing Vessels ◽  
Unit Effort ◽  
Fishing Capacity ◽  
Channel Region

The Mozambique Channel region in East Africa has diverse marine ecosystems and serves as a migratory corridor for economically important species. Local and foreign industrial fisheries operate in the Mozambique Channel, but regional small-scale fisheries are the crucially important fisheries that provide food security, livelihoods, and economic opportunities for rural coastal communities. This study reconstructed and investigated trends in the fishing effort and catch per unit effort (CPUE) of small-scale marine fisheries in four Exclusive Economic Zones (EEZ) that constitute the Mozambique Channel, i.e., Union of Comoros, Madagascar, Mayotte, and Mozambique, from 1950 to 2016. Effective fishing effort for small-scale fisheries in the form of fishing capacity in kWdays (i.e., kilowatt days) was derived using the number, length, motorization (engine power) by fishing vessels, as well as an approximate human-powered equivalent for shore-based fishers without vessels, as well as days of fishing per year. Effective small-scale fishing effort in the Mozambique Channel increased by nearly 60 times from just over 386,000 kWdays in 1950 to over 23 million kWdays in 2016. Correspondingly, the overall small-scale CPUE, based on previously and independently reconstructed catch data declined by 91% in the region as a whole, from just under 175 kg⋅kWday–1 in the early 1950s to just over 15 kg⋅kWday–1 in recent years. All four EEZs showed the strongest declines in the small-scale CPUE in the earlier decades, driven by motorization and growth in vessel numbers impacting effective fishing effort. Increased motorization combined with a substantial growth in overall vessel numbers were the drivers of the increasing fishing effort and decreasing CPUE, and clearly suggest that continuing to increase the fishing capacity of small-scale fisheries in the absence of effective and restrictive management actions may exacerbate overexploitation risk.

scholarly journals RESPONSIBLE FISHERIES MANAGEMENT OF MINI PURSE SEINE IN THE LAMPUNG BAY AREA

2017 ◽  
Vol 8 (2) ◽  
pp. 713
Author(s):  
Yulia Estmirar Tanjov ◽  
Roza Yusfiandayani ◽  
. Mustaruddin
Keyword(s):  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Pelagic Fish ◽  
Purse Seine ◽  
Sustainable Yield ◽  
Catch Per Unit Effort ◽  
Small Pelagic Fish ◽  
Bay Area ◽  
Fisheries Resources ◽  
The Status

<p><em>Lempasing is a Coastal Fishing Port (CFP) which located in Bandar Lampung. It is one of the centers of fisheries activities in the city. One of the fishing gear which operated by most of fishermen in Lempasing is mini purse seine. Mini purse seine fishing activities in the Lampung Bay Area and Lempasing CFP is not in accordance with the conditions of the surrounding waters area. The research was conducted in the Lampung Bay Area and Lempasing CFP, Lampung. This study aims to: 1) determine the status of fisheries resources utilization, 2)</em><em> to describe the dominant fish caught by mini purse seine. </em><em> Analysis methods were used in this study namely: 1) Fishing Power Index (FPI), Catch Per Unit Effort (CPUE), and Maximum Sustainable Yield (MSY) to determine the status of fisheries resource utilization. The dominant small pelagic fishes caught were scad fish <span style="text-decoration: underline;">Selaroides</span> </em>sp<em>., mackerel fish <span style="text-decoration: underline;">Rastrelliger</span> </em>sp<em>., longnose trevally fish <span style="text-decoration: underline;">Carangoides</span> <span style="text-decoration: underline;">chrysophrys</span>. The result showed that Fox model was the best fits models with estimated maximum sustainable yield of 15.5 ton and fishing effort of 992 trip/year for mini purse seine. The longnose trevally fish in lampung bay area in do not exceeded the optimal catch fish condition can be used to sustainably. In these condition is necessary to wisely manage and setting the catches to not exceed the allowable catch of the small pelagic fish, so the stock of small pelagic fish in the Lampung Bay Area can be used sustainably.</em></p>

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