Articles

Penanganan penyu yang tertangkap rawai tuna di Samudera Hindia Nugraha, Budi; Jatmiko, Irwan; Hartaty, Hety
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 6, No 1 (2017): April 2017
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (657.657 KB) | DOI: 10.13170/depik.6.1.5887

Abstract

Turtle is one of the vulnerable of megafauna and as a by-catch in tuna longline fisheries, however, management practices have not been done yet. This paper described the efforts to avoid the capture of turtles on the tuna longline fishery and its handling recommendation. It has been written based on the research results and observer programs of activities that have been implemented since 2005. It’s also including a literature review rules and regulations regarding the management of sea turtles. The record results during 2005 - 2014 conducted by an independent scientific board on tuna longline in the Indian Ocean with 72 times number of setting and 89,441number of hooks. There are 105 turtles caught, which are leatherback, olive ridley turtles, hawksbill, loggerhead sea turtles as well as the unknown green turtle where the current status of turtles in the Indian Ocean is in a state of vulnerable, endangered, critically even endangered. The olive ridley turtle, loggerhead and leatherback turtles are in a vulnerable status. While, the green turtles are in a state endangered and even hawksbill in a state extremely endangered. Policy measures for handling of turtles in tuna longline fishery needs to be taken in order to be implemented include the socialization of the use of intensified circle hooks and if necessary the government issued regulations regarding the use of circle hooks, the implementation of the placement of fishing monitoring (observer) aboard the tuna longline in order to assist the skippers monitoring the catch of turtles and turtle handling training for the skippers and crew in order to hold the caught turtles can be handled directly on the boat to reduce the mortality turtles which can be released back into the sea alive.Penyu merupakan salah satu biota yang rawan punah dan sebagai hasil tangkapan sampingan pada perikanan rawai tuna dimana pengelolaannya belum banyak dilakukan. Makalah ini membahas tentang upaya bagaimana menghindari tertangkapnya penyu dan rekomendasi penanganan penyu pada perikanan rawai tuna. Tulisan disusun berdasarkan penelusuran hasil penelitian maupun kegiatan program observer yang telah dilaksanakan sejak tahun 2005, dilengkapi kajian pustaka serta peraturan terkait pengelolaan penyu. Hasil pencatatan selama periode 2005 – 2014 yang dilakukan oleh pemantau ilmiah di kapal rawai tuna di Samudera Hindia dengan jumlah setting sebanyak 72 kali dan 89.441 buah pancing tertangkap 105 ekor penyu, yang terdiri dari penyu belimbing, penyu lekang, penyu sisik, penyu tempayan dan penyu hijau serta penyu yang tidak diketahui jenisnya dimana saat ini status penyu di Samudera Hindia berada dalam kondisi rentan, terancam punah bahkan sangat terancam punah. Penyu lekang, penyu tempayan dan penyu belimbing berada dalam status rentan. Sementara penyu hijau berada dalam keadaan terancam punah dan bahkan penyu sisik berada dalam keadaan sangat terancam punah. Langkah-langkah kebijakan penanganan penyu pada perikanan rawai tuna yang perlu dilaksanakan adalah mengintensifkan penggunaan pancing lingkar, perlu regulasi penggunaan pancing lingkar, implementasi penempatan pemantau penangkapan ikan (observer) di atas kapal rawai tuna agar dapat membantu para nahkoda memonitoring hasil tangkapan penyu dan pelatihan penanganan penyu bagi para nahkoda maupun anak buah kapal yang bertujuan agar penyu-penyu yang tertangkap dapat ditangani secara langsung di atas kapal sehingga menurunkan tingkat kematian penyu-penyu tersebut kemudian dapat dilepas kembali ke laut dalam kondisi hidup.
ANALYSIS OF SEX-RATIO BY LENGTH CLASS OF BIGEYE TUNA (Thunnus obesus) IN THE INDIAN OCEAN Setyadji, Bram; Bahtiar, Andi; Nugraha, Budi
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : LIPI-Press

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Abstract

By far the information about Indian Ocean big eye tuna biology and fisheries especially in Indonesia is still verylimited. This paper is an attempt to give some information of the biological observations, especially sex ratio of bigeye tuna(BET) in Indian Ocean. Surveillance was conducted by scientific observers on March–April, 2010 following twocommercial tuna longline vessels based in Port of Benoa. Total 159 of BET managed to be hauled and observed.The result showed that sex ratio of male and female BET was 1:1.12 and study indicated small size (60–100cm) and large size (140–160 cm) of BET comprise of male more than female; while middle size (100–140 cm)dominated by female rather than male. In addition most BET caught were already reached their sexual maturity.
PERTUMBUHAN DAN MORTALITAS IKAN TUNA MATA BESAR (Thunnus obesus) DI SAMUDERA HINDIA YANG DIDARATKAN DI PELABUHAN BENOA, DENPASAR, BALI Kurniawati, Erika; Ghofar, Abdul; Saputra, Suradi Wijaya; Nugraha, Budi
Management of Aquatic Resources Journal VOLUME 5, NOMOR 4, TAHUN 2016
Publisher : Management of Aquatic Resources Journal

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Abstract

ABSTRAK Tuna mata besar (Thunnus obesus) di Samudera Hindia menjadi salah satu target utama penangkapan. Berdasarkan pemanfaatan tersebut, perlu dilakukan penelitian mengenai parameter populasi tuna mata besar. Penelitian ini bertujuan untuk mengetahui aspek pertumbuhan, ukuran pertama kali tertangkap, parameter populasi, laju mortalitas, laju eksploitasi dan pola rekrutmen. Jumlah sampel tuna mata besar sebanyak 648 ekor diambil dari 21 armada rawai tuna (longline) yang melakukan bongkar selama penelitian. Data panjang tahun 2013-2014 diperoleh dari Loka Penelitian Perikanan Tuna Bali. Penelitian ini dilakukan bulan April-Mei 2016 di Pelabuhan Benoa, Denpasar, Bali. Analisis data menggunakan Model Von Bertalanffy Growth Function dengan software FISAT II. Hasil penelitian menunjukkan pola pertumbuhan bersifat allometrik negatif. Faktor kondisi diperoleh sebesar 1,02-1,27. Ukuran pertama kali tertangkap (L50%) sebesar 126,54 cmFL. Persamaan pertumbuhan Von Bertalanffy Growth Function (VBGF) diperoleh Lt=199,5(1 - e 0,22 (t+0,451)), dengan nilai K= 0,22/tahun, nilai t0= -0,451 tahun dan L∞ = 199,5 cmFL. Laju mortalitas penangkapan (F) = 0,51/tahun, lebih besar daripada mortalitas alami (M) = 0,40/tahun, berarti kematian tuna mata besar lebih banyak disebabkan karena faktor eksploitasi/penangkapan. Laju eksploitasi (E)= 0,56 mengindikasikan tuna mata besar yang tertangkap oleh armada rawai tuna (longline) di Samudera Hindia dalam kondisi fully exploited (padat tangkap).Kata Kunci : Ikan tuna mata besar; aspek biologi; umur; pertumbuhan; mortalitas; laju eksploitasi; rekrutmen; Samudera Hindia  ABSTRACT Bigeye tuna (Thunnus obesus) in the Indian Ocean became one of the main targets of arrest. Based on utilization, research is needed on bigeye tuna population parameters. This study aims to determine of growth, size at the first caught, population parameters, mortality rate, exploitation rate and recruitment patterns. Number samples of bigeye tuna were taken from 648 fishes by 21 tuna longline fleets which was unloading during this study. Length data of 2013-2014 were obtained from Research Institute for Tuna Fisheries, Bali. This research was conducted April-May 2016 in Benoa Harbour, Denpasar, Bali. Data analysis used the Von Bertalanffy Growth Function Model with FISAT II software. The results showed negative allometric growth patterns. The condition factor was obtained for 1.02 to 1.27. The length at first caught (L50%) amounted to 126.54 cmFL. VBGF growth equation was obtained Lt=199.5(1 - e 0.22 (t + 0.451)), with the value K=0,22/year, t0= -0,451/year and L∞= 199,5 cmFL. The fishing mortality rate (F)= 0.51/year, it was bigger than the natural mortality (M)= 0.40/year, means that mostly mortality of bigeye tuna was caused by the exploitation / fishing factor. The exploitation rate (E)= 0.56, indicated that bigeye tuna were caught by tuna longline fleets in the Indian Ocean on fully exploited.Keywords:Bigeye tuna; biology aspect; age; growth; mortality; exploitation rate; recruitment; Indian Ocean
JENIS DAN DISTRIBUSI UKURAN IKAN HASIL TANGKAP SAMPINGAN (BY CATCH) RAWAI TUNA YANG DIDARATKAN DI PELABUHAN BENOA BALI Astuti, Skar Puji; Ghofar, Abdul; Saputra, Suradi Wijaya; Nugraha, Budi
Management of Aquatic Resources Journal VOLUME 5, NOMOR 4, TAHUN 2016
Publisher : Management of Aquatic Resources Journal

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Abstract

ABSTRAK Hasil tangkapan rawai tuna terdiri dari dua jenis yaitu hasil tangkapan utama (target species) dan hasil tangkapan sampingan (by catch). Penelitian ini bertujuan untuk mendapatkan informasi jenis ikan hasil tangkapan utama dan ikan hasil tangkapan sampingan rawai tuna, menghitung komposisi ikan, menganalisa distribusi ukuran ikan dan mengetahui nilai CPUE ikan HTU dan ikan HTS. Penelitian dilaksanakan pada bulan April-Mei 2016 dengan mengikuti kegiatan sampling enumerator Loka Penelitian Perikanan Tuna Benoa, Bali. Hasil penelitian menunjukkan jenis ikan hasil tangkapan utama rawai tuna yaitu ikan Tuna mata besar (Thunnus obesus), Tuna sirip kuning (Thunnus albacares), Tuna sirip biru selatan (Thunnus maccoyii) dan Tuna albakora (Thunnus allalunga). Jenis ikan hasil tangkapan sampingan rawai tuna yang mendominasi yaitu ikan opah (Lampris guttatus), hiu air (Prionace glauca) dan escolar (Lepidocybium flavobrunneum). Perbandingan komposisi ikan hasil tangkapan utama yaitu 69% dan ikan by catch 31%. Distribusi ukuran ikan hasil tangkapan sampingan sebagian besar sudah memenuhi kriteria ikan layak tangkap. CPUE ikan hasil tangkapan sampingan lebih rendah dibandingkan dengan ikan hasil tangkapan utama. Kata kunci: Hasil Tangkapan Sampingan (by catch), Rawai Tuna, Pelabuhan Benoa Bali, Samudera Hndia.  ABSTRACT Catch of Tuna longline has two types, that is target species and by catch product. This research aims to determine the information type of target species and species by catch, calculate the composition of the fish, size of distribution analysis and determine the CPUE (Catch per unit effort) of species by catch and target species. This research is conducted in April-May 2016 following the sampling enumerator activities of Benoa port. The results of the research show that the type of target species Tuna Longline there are Big eye tuna (Thunnus obesus), Yellow fin tuna (Thunnus albacares), Southern bluefin tuna (Thunnus maccoyii) and Albakora (Thunnus allalunga). The types of species by catch Tuna Longline dominates that is Opah (Lampris guttatus), Shark (Prionace glauca) and Escolar (Lepidocybium flavobrunneum). Comparison of the composition target species is 69% and species by catch is  31%. The size distribution of species by catch already most the criteria of decent fish caught. CPUE of species by catch was lower than. Keywords: bycatch, tuna longline, benoa port, indian Ocean
ANALISIS DEGRADASI LINGKUNGAN PERAIRAN DAN KETERKAITANNYA DENGAN KEMATIAN MASSAL IKAN BUDIDAYA DI WADUK CIRATA, JAWA BARAT Nastiti, Adriani Sri; Hartati, Sri Turni; Nugraha, Budi
BAWAL Widya Riset Perikanan Tangkap Vol 10, No 2 (2018): (Agustus) 2018
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.093 KB) | DOI: 10.15578/bawal.10.2.2018.83-93

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Waduk Cirata dimanfaatkan untuk budidaya ikan dengan sistem keramba jaring apung, dimana jumlah keramba saat ini sudah melebihi daya dukung yang menyebabkan kelebihan hara (eutrofikasi). Di Waduk Cirata setiap tahun terjadi kematian ikan hasil budidaya. Penelitian ini bertujuan untuk mengidentifikasi masalah kematian masal ikan di Waduk Cirata. Pengumpulan data dilakukan pada saat terjadi kematian massal ikan akhir September 2017, di Zona I (Sangkalin, Cipicung-Bandung Barat), Zona II (Cimanggu-Purwakarta), dan Zona III (Jatinengang, Patokbeusi-Cianjur) menggunakan metode observasi cepat in situ, wawancara dan studi pustaka. Parameter yang diamati meliputi: Suhu air / udara, Kedalaman perairan, Warna air, Kecerahan, Kekeruhan, TDS (0,046-0,172 mg/l), TSS (total suspended solid), DHL (0,1-0,3 mS/cm), Oksigen terlarut, ORP (-49 sampai 244 mv), bebas CO2, Alkalinitas, pH, Nitrat, Nitrit, Amonium, Fosfat, Sulfat, BOT (5,06-17,06 mg/l), dan Kronologi kematian massal ikan. Hasil penelitian menunjukkan bahwa, kadar Oksigen terlarut dibawah 4 mg/l dan ORP nilainya negatif sehingga perairan tidak mampu menguraikan akumulasi limbah sebesar 390.848 ton/tahun. Kondisi tersebut mengindikasikan bahwa perairan mengalami degradasi, Degradasi lingkungan perairan dipicu oleh fenomena umbalan menyebabkan kematian massal budidaya ikan sekitar 65 ton (Zona III), 25 ton (Zona II), dan 20 ton (Zona I).The Cirata reservoir is used for fish culture by floating net cage system that currently has been exceeded to its carrying capacity that caused an over nutrient (eutrophication). Every year, mass mortality event occurred in Cirata Reservoir. This research aims to identify the causal of mass mortality event in the Cirata reservoir. This research conducted at the end of September 2017 in several locations: Zone II (Cimanggu-Purwakarta), Zone I (Sangkalin, Cipicung-West Bandung), and Zone III (Jatinengang, Patokbeusi-Cianjur). A rapid in situ observation, interview and literature review. Parameters that measured include Water/air temperature, Depth, Watercolour, Brightness, Turbidity, TDS (0,046-0,172 mg/l), TSS (total suspended solid), DHL (0,1-0,3 mS/cm), Dissolved Oxygen, ORP ((-49 to 244 mv), CO2, Alkalinity, pH, Nitrate, Nitrite, Ammonium, Phosphate, Sulphate, BOT (5,06-17,06 mg/l), and the chronology of mass mortality. The results showed that the dissolved oxygen was less than 4 mg/l and negative ORP value that indicated incapability of environment to decompose the feed accumulation waste (about 390.848 tons/year). The degradation of waters environment triggered by upwelling phenomenon could cause mass mortality event on fish culture in three zones about 65 tons (Zone III), 25 tons (Zone II) and 20 tons (Zone I), respectively.
PERIKANAN PUKAT CINCIN TUNA SKALA KECILYANG BERBASIS DI PELABUHAN PERIKANAN PANTAI (PPP) TAMPERAN (Small Scale Tuna Purseseine Fisheries Based in Tamperan Fishing Port) Hartaty, Hety; Nugraha, Budi; Styadji, Bram
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol 3, No 2 (2012): Marine Fisheries - November 2012
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (500.128 KB) | DOI: 10.29244/jmf.3.2.161-167

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ABSTRACTIn general, fisheries in Indonesia is still dominated by small-scale fisheries, one of themis the purse seine fishery based in Tamperan Fishing Port. This study aims to determine aspects of purse seine fishery based on Tamperan Fishing Port such as vessel size and fishing gear, FADs , fishing ground and catches. The study was conducted in 2012 in Tamperan Fishing Port with measurement methods and direct observation and interviews with owners, skippers and crew. The results showed that the vessel of small-scale tuna purse seine fishing based in Tamperan Fishing Port have tonnage between 28-45 GT and made of wood with length 17.21-28 m, width 6-7 m, and depth 2-3 m. Nets is used have length between 250-300 m and width 8-10 m. Fishing ground is FADs at coordinates 10º-12º S and 100º-110º E, 60-100 miles from the Pacitan Bay with distance to the location of FADs about one day. The catch is dominated by skipjack about 57.27%, followed by scad26.31% and juvenile yellowfin 10.05%.Keywords: Purse seine, small scale tuna fisheries, Tamperan-------ABSTRAKSecara umum, perikanan tangkap di Indonesia masih didominasi oleh usaha perikanan skala kecil, salah satunya adalah nelayan pukat cincin yang berbasis di PPP Tamperan. Penelitian ini bertujuan untuk mengetahui aspek penangkapan perikanan pukat cincin yang berbasis di PPP Tamperan berupa ukuran kapal dan alat tangkap, rumpon, daerah penangkapan dan hasil tangkapan. Penelitian dilakukan pada tahun 2011 di PPP Tamperan Pacitan dengan metode pengukuran dan pengamatan langsung di lapangan serta wawancara dengan nelayan pemilik, nakhoda dan awak kapal. Hasil penelitian menunjukkan bahwa armada pukat cincin perikanan tuna skala kecil yang berbasis di PPP Tamperan memiliki ukuran tonase antara 28-45 GT dan terbuat dari kayu dengan ukuran panjang antara 17,21-28 m, lebar 6-7 m, dan dalam 2-3 m. Jaring yang digunakan memiliki panjang antara 250-300 m dan lebar 8-10 m dengan menggunakan rumpon. Daerah penangkapan berada pada koordinat 10º-12º LS dan 100º-110º BT dan berjarak sekitar 60-100 mil dari Teluk Pacitan dengan lama perjalanan menuju lokasi rumpon sekitar 1 hari. Hasil tangkapan didominasi oleh cakalang sebesar 57,27%, diikuti oleh layang 26,31% dan yuwana madidihang 10,05%.Kata kunci: Pukat cincin, perikanan tuna skala kecil, Tamperan
PRODUKTIVITAS PERIKANAN TUNA LONGLINE DI BENOA (STUDI KASUS: PT. PERIKANAN NUSANTARA) (Tuna Lingline Fisheries Productivity in Benoa (Case study: PT. Perikanan Nusantara)) Nugraha, Budi; Hufiadi, .
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol 3, No 2 (2012): Marine Fisheries - November 2012
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.54 KB) | DOI: 10.29244/jmf.3.2.135-140

Abstract

ABSTRACTTuna longline fishery in Indonesia has grown since 1972. With the increasing number of tuna longline vessels operating in Indonesian waters, there are needs to research on the productivity of these vessels, especially vessel owned by PT. Perikanan Nusantara as a case study in this research. Data collected through the research activities at the Port of Benoa from March to November 2011. Overall annual production of tuna longline catches PT. Perikanan Nusantara fluctuated during the years 1999-2009 where the average production of fish caught tuna longline vessels size 60 GT per year amounted to 161.19 tons, 40 GT of 231.18 tons and 15 GT of 34.50 tons. Seen from the catch ability of tuna longline per set during the year 2010, found that overall, the average catch per settings for vessel size of 40 GT is higher than the vessel size of 15 GT and 60 GT. Based on the value of the tuna hook rate for vessels size of 15 GT are 0.3, vessels 40 GT are 0.25 and 60 GT are 0.38.Key words: production, productivity, hook rate, tuna longline-------ABSTRAKPerikanan tuna longline di Indonesia telah berkembang sejak tahun 1972. Seiring dengan pertambahan waktu, telah terjadi peningkatan jumlah kapal tuna longline yang beroperasi di perairan Indonesia. Oleh karena itu perlu adanya penelitian mengenai produktivitas dari kapal-kapal tersebut, terutama kapal milik PT. Perikanan Nusantara sebagai studi kasus dalam penelitian ini. Pengumpulan data dilakukan melalui kegiatan penelitian di Pelabuhan Benoa dari bulan Maret hingga November 2011. Produksi tahunan keseluruhan hasil tangkapan tuna longline PT. Perikanan Nusantara selama tahun 1999-2009 berfluktuatif dimana produksi rata-rata ikan hasil tangkapan kapal tuna longline berukuran 60 GT per tahun sebesar 161,19 ton, kapal berukuran 40 GT sebesar 231,18 ton dan kapal berukuran 15 GT sebesar 34,50 ton. Dilihat dari daya tangkap tuna longline per setting selama tahun 2010, diperoleh bahwa secara keseluruhan rata-rata tangkapan per setting untuk kapal berukuran 40 GT lebih tinggi dibanding armada berukuran 15 GT dan 60 GT. Berdasarkan nilai hook rate terhadap ikan tuna untuk kapal berbobot 15 GT diperoleh rata-rata hook rate 0,3, kapal 40 GT 0,25 dan hook rate kapal berbobot 60 GT sebesar 0,38.Kata kunci: laju pancing, produksi, produktivitas, tuna longline,
CAPAIAN PERKEMBANGAN PROGRAM PEMANTAU PADA PERIKANAN RAWAI TUNA DI INDONESIA (Achievement of the Development of Observer Program on Tuna Longline Fishery in Indonesia) Jatmiko, Irwan; Nugraha, Budi; Satria, Fayakun
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol 6, No 1 (2015): Marine Fisheries - Mei 2015
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.027 KB) | DOI: 10.29244/jmf.6.1.23-31

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ABSTRACTFisheries data is one of the important aspects to understand the basic biology, species distributions and population dynamics of fish stock. One of the efforts to collect data is conducting observer program on tuna longline to improve the understanding of all aspects on fishing operation at the sea. The objectives of this study are to describethe historical development of observers, composition and conservation status of tuna longline vessels catch in Indonesia. Data collection was conducted by observer from August 2005 to November 2013. The method used in this research is descriptive method in which this study aimed to describe the phenomenon that occurs in the tuna longline fishery and catch composition. Tuna longline catches can be categorized into fivegroups, namely, tunas, billfishes, sharks and rays, birds and turtles and other fish. The results showed that the composition of longline tuna catches was dominated by other fish groups with 48.10% followed by tunas 33.85%. Other fish group was dominated by bycatch that have economic value (by product). Data and information gained from observer are very important, so its activity should be perceived as necessity for better fisheries management, rather than as mandatory from Regional Fisheries Management Organization (RFMO) regulations.Keywords: catch composition, fisheries management, observer, tuna longline-------ABSTRAKData perikanan merupakan salah satu aspek penting untuk memahami biologi dasar, distribusi spesies dan dinamika populasi stok ikan. Salah satu upaya untuk memperoleh data secara tepat adalah dengan melaksanakan program pemantau di atas kapal rawai tuna untuk meningkatkan pemahaman tentang semua aspek pada operasi penangkapan di laut. Penelitian ini bertujuan untuk mengetahui sejarah perkembangan pemantau, mengetahui komposisi dan status konservasi hasil tangkapan pada kapal rawai tuna di Indonesia. Pengumpulan data dilakukan mulai bulan Agustus 2005 hingga November 2013 di kapal rawai tuna yang sebagian besar berbasis di Pelabuhan Benoa, Bali. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dimana penelitian ini ditujukan untuk menggambarkan fenomena yang terjadi pada perikanan rawai tuna dan komposisi hasil tangkapan. Hasil tangkapan rawai tuna dapat dikategorikan ke dalam lima kelompok yaitu: tuna, ikan berparuh, hiu dan pari, burung dan penyu serta ikan lainnya. Hasil penelitian menunjukkan bahwa komposisi hasil tangkapan kapal rawai tuna didominasi oleh kelompok ikan lainnya, yaitu sebesar 48,10%, diikuti oleh kelompok tuna 33,85%. Kelompok ikan lainnya ini kebanyakan hasil tangkapan sampingan yang mempunyai nilai ekonomis. Data dan informasi yang diperoleh dari program pemantau ini sangat penting sehingga pelaksanaannya harus dilihat sebagai kebutuhan untuk pengelolaan perikanan yang lebih baik, bukan hanya atas dasar kepatuhan terhadap peraturan dari Regional Fisheries Management Organization (RFMO).Kata kunci: komposisi hasil tangkapan, pengelolaan perikanan, pemantau, rawai tuna
CATCH AND EFFORT INFORMATION FOR ALBACORE TUNA (THUNNUS ALALUNGA) BY INDONESIA’S LONGLINERS OPERATING FROM BENOA Sadiyah, Lilis; Nugraha, Budi; Widodo, Agustinus Anung
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3103.094 KB) | DOI: 10.15578/ifrj.19.1.2013.33-38

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Albacore (Thunnus alalunga - ALB) catch was the second highest tuna landed at Benoa Fishing Port and they are mostly landed as frozen bycatch. This paper attempts to provide information on ALB catch and effort trends by Benoa based longline vessels collected by the Benoa Port-based Catch Monitoring and Scientific Observer Programs. The ALB catch landed at the Benoa Fishing Port in 2010 was estimated by the Research Institute for Tuna Fisheries (RITF) to be about 983.14 tons, whereas based on the Indonesian Tuna Long Line Association (ATLI), ALB catch landed at Benoa Fishing Port in 2010 amounted of 2,715.42 tons. This discrepancy was due to sampling for frozen catch (including ALB) could not be conducted in some companies and also there was one company that sell their catch direct to the collector. The observed longline sets were concentrated within the area between 10° - 20°S and 105° - 120°E. Since 2008, the observed setting positions have never extended to south of 20°S. The higher catch rates of ALB were in area south of 15°S.
GENETIC DIVERSITY OF BIGEYE TUNA (Thunnus obesus) BASED ON rntDNA ANALYSIS WITH THE PCR-RFLP TECHNIQUE Nugraha, Budi; Baskoro, Mulyono Sumitro; Pane, Anwar Bey; Nugroho, Estu
Indonesian Fisheries Research Journal Vol 16, No 1 (2010): (June 2010)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6491.65 KB) | DOI: 10.15578/ifrj.16.1.2010.25-32

Abstract

The genetic diversity study of bigeye tuna in Indonesia from Indian Ocean has never been done. One of the analysis to obtain information on the genetic diversity is by using the PCR-RFLP technique.