scholarly journals STATUS STOK, EKSPLOITASI DAN OPSI PENGELOLAAN SUMBERDAYA IKAN TUNA DI LAUT BANDA

2015 ◽  
Vol 7 (1) ◽  
pp. 45 ◽  
Author(s):  
Agustinus Anung Widodo ◽  
Ralph Thomas Mahulette ◽  
Fayakun Satria
Keyword(s):  
Stock Assessment ◽  
Purse Seine ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Total Catch ◽  
Central Pacific ◽  
Central Pacific Ocean ◽  
Resource Sustainability ◽  
Tuna Fishing ◽  
Market Preference

<p>Laut Banda merupakan salah satu daerah penangkapan tuna yang potensial di Indonesia, Jenis alat tangkap yang digunakan terdiri dari pukat cincin, huhate, rawai tuna, pancing ulur dan pancing tonda. Hasil tangkapan tuna di Laut Banda meliputi cakalang, madidihang dan tuna mata besar. Sumberdaya tuna di Laut Banda diduga masih merupakan sub stok sumberdaya tuna di perairan Pasifik Tengah dan Barat. Hasil kajian stok tuna oleh Western and Central Pacific Fisheries Commission (WCPFC) pada 2012 melaporkan bahwa stok cakalang dan madidihang tidak mengalami overfishing dan overfished, sedangkan tuna mata besar telah mengalami overfishing dan overfished. Hasil penelitian Pusat Penelitian Pengelolaan Perikanan dan Konservasi Sumber Daya Ikan (P4KSI) pada 2012 menunjukkan madidihang dan tuna mata besar tertangkap pukat cincin, huhate serta kombinasi pancing ulur permukaan dan pancing tonda pada stadium yuwana, dengan indikasi nilai Lc&lt;Lm. Jumlah yuwana madidihang dan tuna mata besar yang tertangkap pukat cincin masing-masing mencapai sekitar 7,9 ton (26%) dan 1,5 ton (5%) dari rerata total hasil tangkapan sekitar 30,29 ton/kapal/trip. Jumlah yuwana madidihang dan tuna mata besar yang tertangkap huhate sekitar 0,71 ton (15%) dan 0,23 ton (5%) dari rerata total tangkapan sekitar 4,79 ton/kapal /trip. Jumlah yuwana madidihang dan tuna mata besar yang tertangkap pancing ulurpancing tonda sekitar 17% dan 2% dari rerata total tangkapan sebesar 0,31 ton/kapal/trip. Saat ini hasil tangkapan tuna yang berasal dari pukat cincin tidak dikehendaki pasar ekspor, mereka lebih memilih tuna hasil tangkapan huhate ataupun jenis pancing lainnya. Oleh karena itu salah satu kebijakan pengelolaan perikanan tuna di Laut Banda adalah tidak mengembangkan alat tangkap pukat cincin, adapun huhate, pancing ulur-pancing tonda masih tetap dapat dioperasikan.</p><p> </p><p>Banda sea is one of potential tuna fishing grounds among others in Indonesia. Various fishing gear types were operatedin this fishing ground such as pole &amp; line (PL), tuna long line (LL), hand line (HL) and troll line (TR). Skipjack (SKJ), yellowfin tuna (YFT) and bigeye tuna (BET) are main species caught in Banda sea and currently assumed as one stock in the Western Central Pacific Ocean (WCPO). Recent stock assessment done by WCPFC in 2012 reported that BET is in overfishing state (F&gt;Fmsy) while YFT and SKJ are not in overfishing or overfished state. It was also reported by RCFMC that the size of catch of those species by various fishing gear indicating that value of Lc&lt;Lm or in other word that catches are in juvenile stage. The juvenile YFT and BET caught by purse seine were considerably high for 7.9 t (26 %) and 1.5 t (5%) of the total catch 30.29 ton/vessel/trip. YFT and BET caught by pole and line are only 0.71 t (15%) and 0.23 t (5%) of the total catch 4.79 ton/vessel/trip. YFT and BET caught by hand line and troll line were only 17% and 2% of total catch 0.31 ton/vessel/trip. Considering the high pressure of purse seine to juvenile of tuna resource and market preference, so that to the best fishing practice for resource sustainability it is suggestted for tuna management in Banda sea should be not to develop and increase the effort for purse seine and may shift to pole line, hand line and/or troll line are still openated.</p>

scholarly journals KOMPOSISI HASIL TANGKAPAN DAN DAERAH PENANGKAPAN PANCING ULUR TUNA DI PERAIRAN SENDANG BIRU

2019 ◽  
Vol 25 (4) ◽  
pp. 241
Author(s):  
Maya Agustina ◽  
Irwan Jatmiko ◽  
Ririk Kartika Sulistyaningsih
Keyword(s):  
Indian Ocean ◽  
Landing Site ◽  
Yellowfin Tuna ◽  
Purse Seine ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Tuna Fishing ◽  
The Indian Ocean ◽  
High Seas

Tuna, cakalang dan tongkol (TCT) merupakan jenis hasil tangkapan ikan yang memiliki nilai ekonomis penting dan masih terdapat peluang untuk dimanfaatkan. Salah satu sentra perikanan tuna, cakalang dan tongkol di kawasan Indonesia Barat yang terbesar adalah di Kabupaten Malang tepatnya di Pelabuhan Perikanan Pantai (PPP) Pondokdadap Sendang Biru. Jenis alat penangkapan ikan yang digunakan oleh nelayan untuk menangkap tuna di perairan ini adalah pancing ulur (handline) yang dioperasikan dengan menggunakan bantuan rumpon. Tujuan penelitian ini adalah untuk mengetahui informasi sebaran daerah penangkapan (teritorial, ZEE dan laut lepas) dan bagaimana dinamika hasil tangkapannya khususnya tuna, cakalang dan tongkol. Pancing ulur mendominasi alat penangkapan ikan yang digunakan di PPP Pondokdadap, Sendang Biru tercatat sebanyak 70,42%, sedangkan pukat cincin sebanyak 9,82% dan pancing rawai sebanyak 19,76%. Jenis hasil tangkapan pancing ulur terbanyak adalah cakalang dan juwana tuna. Daerah penangkapan nelayan pancing ulur yang berbasis di PPP Pondokdadap, Sendang Biru menyebar pada kawasan perairan dengan batasan antara 8º – 12º LS dan 108º – 115º BT atau secara geografis berada di dalam perairan teritorial, ZEE dan di laut lepas. Prosentase hasil tangkapan TCT yang tertangkap pancing ulur berdasarkan wilayah perairan seperti berikut: teritorial sebanyak 0,63%, ZEE sebanyak 78,68% dan di luar ZEE (laut lepas) sebanyak 20,69%. Tuna, skipjack and little tuna are economically important and still has the potential to cathed. One of the fisheries centers tuna, skipjack and little tuna landing site in the western part of Indonesia is in Malang located at Pondokdadap Sendang Biru fishing port. The fishing gear commonly used by Sendang Biru fishermen to catch tuna in the Indian Ocean waters is handline which is operated around FADs. The purpose of this study was to find out information the distribution of fishing areas (territorial, EEZ and high seas) and how the dynamics of the catch especially tuna, skipjack and little tuna. The dominant fishing gear in PP Pondokdadap Sendang Biru is the handline with 70.42%, followed by purse seine 9.82% and longlines 19.76%. The dominant catches caught by handline were skipjack and juvenile of yellowfin tuna. Fishing ground of hand line based in PP Pondokdadap located in waters with boundaries between 8º - 12º LS and 108º - 115ºBT or geographically located in the waters territorial, EEZ and on the high seas. Tuna catches precentage caught by handline in territorial, EEZ and high seas, accounting for 0.63%, 78.68% and 20.69%, respectively. 

Recreational billfish catches and gamefishing facilities of Pacific Island nations in the Western and Central Pacific Ocean

2003 ◽  
Vol 54 (4) ◽  
pp. 463 ◽  
Author(s):  
Wade Whitelaw
Keyword(s):  
Pacific Ocean ◽  
Purse Seine ◽  
Pacific Island ◽  
Central Pacific ◽  
Central Pacific Ocean ◽  
Tax Relief ◽  
The Pacific ◽  
Pacific Island Nations ◽  
Subsistence Fishing ◽  
Pacific Community

Gamefishing is a developing industry for many of the Pacific Island nations, with a number of countries encouraging the industry with tax relief and tourism promotion. This paper was prepared to provide a preliminary appraisal of gamefish facilities and recreational billfish catches of Pacific Island countries in the Western and Central Pacific Ocean. The level of development of gamefishing varies among Pacific Island nations, with fishers of some countries only carrying out subsistence fishing (including billfish), whereas others have a well-developed gamefishing infrastructure. The gamefish facilities of each country are described, including charter operations, number of private vessels and berthing facilities. Estimates of recreationally caught billfish are also provided for each Pacific Island nation. These estimates have been facilitated by the development of a gamefish catch and effort database by the Secretariat of the Pacific Community. Presently, an estimated 1050 metric tonnes of marlin are caught by gamefishing in the Western and Central Pacific Ocean, which compares with an estimate of around 18 000 metric tonnes caught by commercial longline and purse seine vessels.

scholarly journals Marine pollution originating from purse seine and longline fishing vessel operations in the Western and Central Pacific Ocean, 2003–2015

AMBIO ◽  
2016 ◽  
Vol 46 (2) ◽  
pp. 190-200 ◽  
Author(s):  
Kelsey Richardson ◽  
David Haynes ◽  
Anthony Talouli ◽  
Michael Donoghue
Keyword(s):  
Pacific Ocean ◽  
Marine Pollution ◽  
Purse Seine ◽  
Fishing Vessel ◽  
Central Pacific ◽  
Central Pacific Ocean

Reconstructing ecosystem dynamics in the central Pacific Ocean, 1952–1998. I. Estimating population biomass and recruitment of tunas and billfishes

2002 ◽  
Vol 59 (11) ◽  
pp. 1724-1735 ◽  
Author(s):  
Sean P Cox ◽  
Steven J.D. Martell ◽  
Carl J Walters ◽  
Timothy E Essington ◽  
James F Kitchell ◽  
...  
Keyword(s):  
Stock Assessment ◽  
Ecosystem Dynamics ◽  
Central Pacific ◽  
Central Pacific Ocean ◽  
Makaira Nigricans ◽  
Top Predators ◽  
Production Models ◽  
Thunnus Obesus ◽  
Age Structured ◽  
Commercial Yield

Commercial yield of tunas in the central Pacific increased severalfold between 1952 and 1998. We developed age-structured production models that incorporate information from multiple fisheries to estimate population biomass and recruitment trends of tunas (Thunnus alalunga, Thunnus albacares, Thunnus obesus, and Katsuwonus pelamis) and billfish in the central north Pacific (0°N to 40°N and 130°E to 150°W). Our results suggest that all tuna stocks remain above 40% of 1950s levels, whereas blue marlin (Makaira nigricans) declined to 21% and swordfish (Xiphias gladius) to 56%. Estimated biomasses of juvenile bigeye (T. obsesus) and yellowfin (T. albacares) tuna increased to 112 and 129%, respectively, of 1950s levels. Juvenile albacore (T. alalunga) decreased during the 1970s and 1980s but recovered to historical highs (121%) in recent years. Skipjack (K. pelamis) remained relatively stable between 1952 and 1980, declined by 35% between 1981 and 1990, and then increased to 68% of 1950s levels. These changes generally represent decreases in top predators and increases in small tunas, which make up their prey. Application of stock assessment methods set in a food web context provides an important step toward developing a method that recognizes fishery exploitation as a component of ecosystem dynamics.

scholarly journals RATIO OF THE MAIN DIMENSIONS AND STATIC STABILITY TRADITIONAL PURSE SEINER IN PINRANG

2017 ◽  
Vol 9 (1) ◽  
pp. 19
Author(s):  
Muh. Arkam Azis ◽  
Budhi Hascaryo Iskandar ◽  
Yopi Novita
Keyword(s):  
Numerical Simulation ◽  
Static Stability ◽  
Good Stability ◽  
Purse Seine ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Fishing Vessel ◽  
Main Dimension ◽  
Dimension Ratio

<p><em>The fishing vessel is the main vehicle of the fishermen to go to fishing ground and hauling purse seine especially fishing gear. Pinrang Regency ships traditionally built without calculation of naval architecture. Where the purse seine fishing gear in Pinrang Regency has length 330 m nets with a depth of 36 m. The purpose of this research was to examine the main dimension ratio in particular design and static stability of the vessel purse seine in Pinrang Regency. Method of using a case study on two types of vessels have different relative and analyzed by numerical simulation, calculate the ratio of the main dimensions and static stability. The results of this research are the vessels in Pinrang kasko model has the shape of a round bottom and slim body as well as the ratio of the dimensions of the vessels only L/D purse seine LOA 24 m more than the standard reference of vessels (encircling) in Indonesia and on the value of the static stability by the IMO, with a purse seine vessel Pinrang already has a good stability. However, in both types of vessel purse seine size 20 m that has better stability.</em></p><p><em> </em></p><strong><em>Keywords:</em></strong><em> design, fishing vessel, purse seine, stability</em>

scholarly journals PROSES PENANGKAPAN TUNA MADIDIHANG (Thunnus albacares) DENGAN ALAT TANGKAP PANCING ULUR (HAND LINE) DI PULAU AMBON

2020 ◽  
Vol 16 (2) ◽  
pp. 97-107
Author(s):  
Loepold Arthur Tomasila ◽  
Muhidin Syamsuddin ◽  
Rosihan Polhaupessy
Keyword(s):  
Secondary Data ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Thunnus Albacares ◽  
General Description ◽  
Purposive Sampling ◽  
The Social ◽  
Tuna Fishing ◽  
Operating Methods ◽  
Optional Activity

Tuna fishing activities using the hand line tool is an optional activity that has been occupied by the community in Ambon Island. The use of hand-line fishing gear is used to catch yellowfin’s tuna and is classified as environmentally friendly fishing gear. In the process of operating the gear, the fishermen's experience and fishing techniques must be considered. This study aims to 1) know a general description of the social and economic conditions of hand-line fishing fishermen, and 2) know the fishing process using hand lines including the use of fishing gear, the operating methods and the yellowfin tuna’s fishing ground carried out by fishermen of Assilulu, Laha and Latuhalat. This research was conducted for 8 months from February to September 2020. The primary collection was carried out through an interview process by using questionnaire and field observations while secondary data were obtained from supporting literature. The data collection method used the purposive sampling with 29 respondents. The data analysis used was descriptive qualitative. The results showed that fishermen in the three locations had good experiences in doing their jobs. The level of education and the level of fishermen's welfare are still low. The construction of hand-line fishing gear used is the same in these three villages, but the size of hook, the use and the operational costs in fishing are different by each other. The technique of yellowfin tuna is to see a herd of dolphins and use FAD (Fish Aggregating Device). The fishing ground for tuna is still in the waters of Ambon Island and its surroundings.   ABSTRAK Aktivitas penangkapan ikan tuna menggunakan alat tangkap pancing ulur merupakan suatu pilihan kegiatan yang telah ditekuni oleh masyarakat di Pulau Ambon. Penggunaan alat tangkap pancing ulur ini digunakan untuk menangkap ikan tuna madidihang dan tergolong alat tangkap ramah lingkungan. Dalam proses pengoperasian alat tangkap pancing ulur harus memperhatikan pengalaman nelayan serta teknik penangkapan. Penelitian ini bertujuan untuk 1) mengetahui gambaran umum kondisi sosial dan ekonomi nelayan pancing ulur, dan 2) mengetahui proses penangkapan ikan dengan menggunakan pancing ulur meliputi penggunaan alat tangkap, metode pengoperasian serta daerah penangkapan (fishing ground) tuna madidihang yang dilakukan oleh nelayan di Negeri Assilulu, Laha dan Latuhalat. Penelitian ini dilakukan selama 8 bulan dari bulan ferbuari-September 2020. Pengumpulan secara primer dilakukan melalui proses wawancara dengan menggunakan kuesioner serta obervasi lapangan, sedangkan data sekunder diperoleh dari literatur pendukung. Metode pengambilan data menggunakan purposive sampling dengan responden sebanyak 29 responden. Analisis data yang digunakan yaitu deskriptif kualitatif. Hasil penelitian menunjukan bahwa nelayan pada ketiga lokasi memiliki pengelaman yang baik dalam melakukan pekerjaannya. Tingkat pendidikan dan tingkat kesejahteraan nelayan masih rendah. Konstruksi alat tangkap pancing ulur yang digunakan sama pada ketiga negeri, namun ukuran mata pancing, penggunaan berbeda serta biaya operasionalnya dalam melaut berbeda. Teknik penangkapan ikan tuna madididang yaitu melihat kawanan gerombolan lumba-lumba dan menggunakan rumpon. Daerah penangkapan ikan tuna masih berada di perairan Pulau Ambon dan sekitarnya.   Kata Kunci : Penangkapan, tuna madidihang, nelayan, pancing ulur, Pulau Ambon

scholarly journals A critique of the ecosystem impacts of drifting and anchored FADs use by purse-seine tuna fisheries in the Western and Central Pacific Ocean

2012 ◽  
Vol 26 (1) ◽  
pp. 49-61 ◽  
Author(s):  
Bruno Leroy ◽  
Joe Scutt Phillips ◽  
Simon Nicol ◽  
Graham M. Pilling ◽  
Shelton Harley ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Purse Seine ◽  
Central Pacific ◽  
Ecosystem Impacts ◽  
Central Pacific Ocean ◽  
Tuna Fisheries

scholarly journals ANALYSIS OF YELLOWFIN TUNA (Thunnus albacares) FISHING GROUND BASED ON SEA SURFACE TEMPERATURE AND CHLOROPHYLL-A IN THE WEST SUMATERA WATERS

2020 ◽  
Vol 3 (3) ◽  
pp. 236-247
Author(s):  
Ridwan Habibullah ◽  
Mubarak ◽  
Musrifin Galib
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Chlorophyll A ◽  
Yellowfin Tuna ◽  
Sea Surface ◽  
Fishing Ground ◽  
Total Catch ◽  
Research Survey ◽  
Tuna Fishing ◽  
Aquatic Productivity

This research was conducted on September 2019 in west Sumatera waters which was aimed to find out the level of aquatic productivity, to analyze the yellowfin tuna fishing ground and to find out the corelation between sea surface temperature (SST) and chlorophyll-a with the total catch of yellowfin tuna. In conducting the research, survey and spatial analyze were used as the method. The highest total catch of yellowfin tuna was on October 2019 with the total 60.610 kg and the CPUE 166 kg/trip. On the other hand, the lowest total catch was on June with the total 18.080 kg and CPUE 92,7179 kg/trip. Based on the result of the CPUE, October is the best month for fishing. The correlation coefficient between SST and total catch in 2018 was -0.69 which mean there was a negative correlation. Meanwhile, the correlation chlorophyll-a with the total catch was 0.65 which mean the corelation between both variables were not good

scholarly journals Comparison of the Catching Results of Mini One-Boat and Two-Boat Purse Seine in Bali Strait, Muncar, East Java Province

2020 ◽  
Vol 5 (1) ◽  
pp. 8-14
Author(s):  
Yudi Nurul Ihsan ◽  
Nita Ulfah Khoirunisa ◽  
Indah Riyantini ◽  
Rahman Elfithri ◽  
Tri Dewi K. Pribadi ◽  
...  
Keyword(s):  
Fork Length ◽  
Operation Time ◽  
Catch Rate ◽  
Purse Seine ◽  
Primary Data ◽  
Fishing Gear ◽  
Total Catch ◽  
High Productivity ◽  
Schooling Fish ◽  
Catch Composition

Mini purse seine has a major contribution in increasing production of small pelagic catches in Pelabuhan Perikanan Pantai (PPP) Muncar, because it has high productivity and the construction made according to catch schooling fish. This research aims to compare the catches composition and catch rate of mini one-boat and two-boat purse seine in Bali Strait, Indonesia. This research was conducted in Mei 2018 in Muncar, East Java, Indonesia. The method used in this research is survey. The primary data are total catch composition, fork length, individual weight of total catch and operation time of both fishing gears. Data were analysed by main catch and bycatch proportion, legal size proportion and catch rate. The results showed that the mini two-boat purse seine had a greater catch volume compared to the mini one-boat purse seine. The bycatch composition dominates in both fishing gear. The proportion of legal-size catching is 67% of the total. The fork length is not significantly different and for the total catches is significantly different. The catching rate of the mini purse seine one boat catch rate is lower at 4,048.67 kg/hour, compared to the mini two-boat purse seine which is 9,189.18 kg/hour.

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