Articles

KARAKTERISTIK IKAN HASIL TANGKAPAN ALAT TANGKAP "ILLEGAL" DI PANTAI UTARA JAWA BARAT Wiyono, Eko Sri
Bumi Lestari Journal of Environment Vol 11 No 2 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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The objectives of this study are to analyse fish catch characteristics of arad and dogol (both are likes mini trawl), which categorized as "illegal" fishing gears. Study was conducted at northern coastal of West Java province. Results of this study showed that species number and total catch weight varied among fishing gear. Based on the species number, arad which operated in Eretan Kulon could captured highest number compare to other fishing gears. On the other hand, based on the catch weight, dogol which operated in Karangreja captured highest catch weight compare to other fishing geras. The diversity analyses of catch species showed that all of fishing gears have a diversity index > 0.1. This result indicated that all of "illegal" fishing gears categorized as low species selectivity.
“SELEKTIFITAS SPECIES” ALAT TANGKAP GARUK DI CIREBON, JAWA BARAT Wiyono, Eko Sri
Bumi Lestari Journal of Environment Vol 9, No 1
Publisher : Udayana University

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In order to understand the fishing gear characteristics of “garuk”, a traditional fishing gear in North Java Sea, study about species selectivity of garuk has been conducted in Cirebon, West Java. Using Shannon-Diversity Index and Dominance Index analysis the catch diversity and dominancy were analyzed. The result analysis showed that the number of species diversity of garuk varied between 0.8 – 1.2. On the other hand, result analysis of dominance index showed that the number varied between 0.3 – 0.5. This result indicated that garuk has low selectivity to target species.
LANDING CHARACTERISTICS OF FISHING GEARS IN SMALL-SCALE TROPICAL COASTAL FISHERIES OF PELABUHANRATU BAY, WEST JAVA AND ITS APPLICATION FOR GEAR MANAGEMENT Wiyono, Eko Sri
Bumi Lestari Journal of Environment Vol 12, No 2
Publisher : Udayana University

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Dalam rangka pengelolaan alat tangkap berbasis ekologi, beberapa indikator komunitas ikan diusulkan untuk mengkarakterisasi alat tangkap yang digunakan pada perikanan skala kecil di Teluk Pelabuhanratu. Lima alat tangkap dikaji berdasarkan data deret waktu hasil tangkapan  bulanan alat tangkap komersial. Hasil analisis menunjukkan bahwa berbagai metode yang digunakan menunujukkan hasil yang saling menunjang. Indeks musim penangkapan, produktivitas dan keragaman indeks ikan yang didaratkan berfluktuasi secara musiman dan mencapai nilai tinggi di musim kemarau. Bagan dan jaring insang, yang tergolong alat tangkap pasif, cenderung memiliki kemiripan karakteristik sepanjang tahun. Kedua alat tangkap yang dikategorikan sebagai alat tangkap multi-target, memiliki periode musim penangkapan yang pendek di musim kemarau dan memiliki tingkat kesamaan hasil tangkapan yang tinggi  sepanjang tahun. Alat tangkap pasif lainnya, pancing ulur dan jaring insang tetap, yang dikategorikan sebagai alat tangkap dengan target tunggal, juga menunjukkan karakteristik serupa. Sebaliknya, payang yang dioperasikan secara aktif dan dikategorikan sebagai alat tangkap dengan multi-target, menunjukkan karakteristik yang berbeda dengan alat tangkap lainnya. Berdasarkan fakta tersebut dapat dismpulkan bahwa dinamika kelimpahan ikan bersama-sama dengan kondisi oseanografi, kapasitas perikanan dan kemungkinan adanya interaksi antar alat tangkap telah menyebabkan keberadaan spesies ikan target berubah dinamis secara musiman. Hasil lain dari penelitian ini juga menunjukkan bahwa untuk mencapai perikanan yang berkelanjutan di Teluk Pelabuhanratu, perlu adanya pengurangan penggunaan bagan.
Komposisi, Diversitas dan Produktivitas Sumberdaya Ikan Dasar di Perairan Pantai Cirebon, Jawa Barat Wiyono, Eko Sri
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 4 (2010): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Peningkatan tekanan penangkapan ikan  di perairan pantai, diduga telah membahayakan kelestarian sumberdaya ikan. Untuk mengetahui kondisi  terkini dari sumberdaya ikan di perairan Laut Jawa,  pengkajian tentang sumberdaya ikan dasar telah dilakukan.   Penelitian ini bertujuan untuk mengkaji komposisi, diversitas dan produktivitas hasil tangkapan ikan dasar di perairan pantai utara Cirebon, Jawa Barat. Data dikumpulkan dengan menggunakan dogol, alat tangkap tradisional yang biasa dioperasikan untuk menangkap ikan di perairan Laut Jawa.  Agar dapat mengetahui perubahan fish assemblages, data tentang ikan (komposisi dan bobot hasil tangkapan) diambil  pada bulan yang berbeda (Maret, Juli dan November). Hasil penelitian ini menunjukkan bahwa pepetek (Leiognathus sp) menjadi ikan dasar yang paling dominan di pantai utara Cirebon.  Meskipun nilai indek diversitas dan produktivitas berbeda antar musim, tetapi pepetek selalu menempati posisi yang  tertinggi dibandingkan jenis ikan lainnya pada semua musim. Hasil penelitian ini mengindikasikan bahwa belum ada perubahan komposisi ikan setelah penghapusan trawl di Laut Jawa.  Tekanan penangkapan ikan di lokasi kajian  sangat tinggi, terbukti ikan yang mempunyai tingkat rekruitmen  tinggi (pepetek) selalu dominan pada semua musim. Kata kunci: Cirebon, diversitas, ikan dasar, komposisi, produktivitas Increased fishing pressure in coastal waters believed to have endangered the sustainability of fish resources. To know the current condition of fish resources in the waters of the Java Sea, the study of the demersal fish condition was conducted.   In general, the aim of this study is to analyze present status of demersal fisheries in costal waters of Cirebon, West Java.  Specifically, the aims of this study are to analyze composition, diversity and productivity of demersal fish resources at Northern Coastal of Cirebon, West Java.   The data were collected using dogol, a traditional little trawl which popular operated for demersal fish in northern Java Sea.    In order to understand changing of fish assemblages between season, a set of fish data (composition and weight) was collected in different season (March, July, and November).  The results of this study showed that pony fish (Leiognathus sp) was the dominant fish in northern coastal of Cirebon along year study.  Althought  fish composition, diversity and productivity were different between season,  pony fish always give highest contribution comparing to other fish.  The results of this study indicate that there has been no change in the fish composition after banned trawl in the Java Sea. Fishing pressure in Cirebon waters is relativelly still high, it indicated by domination of pony fish (Leiognathus sp) which have high level of recruitment in all seasons. Key words:  composition, Cirebon, diversity, demersal fish, productivity
STRATEGI PENGELOLAAN UNTUK MENINGKATKAN PRODUKSI UDANG DI KABUPATEN CILACAP (Management Strategies to Increase Shrimp Production in Cilacap Regency) Pangesti, T. P.; Nurani, Tri Wiji; Wiyono, Eko Sri
Jurnal Marine Fisheries Vol 2, No 2 (2011): Marine Fisheries
Publisher : Jurnal Marine Fisheries

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Cilacap is the center of the shrimp fishery in Central Java’s south sea. Lately, the shrimp resources in that area have decreased biologically, which is characterized by a decrease in shrimp production trend line. From 2004 to 2008 there was a decrease by 6.3% per year which was caused by large scale utilization in shrimp resources and degradation in carrying capacity. This study aimed to determine influential factors in decreasing shrimp production and to develop strategies for business development in Cilacap’s shrimp fishery. Data were analyzed using the fish-bone diagram and SWOT (Strengths Weakness Opportunities and Threats) analysis. Influential factors in decreasing shrimp production were 1) fishermen; 2) units of fishing; 3) mangrove forests; 4) fishing methods, and 5) shrimp resources stock. Strategies for Cilacap shrimp fishery management were 1) law enforcement in controlling the shrimp capture and mangrove exploitation; 2) the economic development of fishermen and society; 3) integrated shrimp fisheries management; 4) mangrove and aquatic ecosystems rehabilitation; and 5) increase the environmental and shrimp resources carrying capacity.Key words: Cilacap, fish-bone diagrams, management, shrimp fishery, SWOT analysis
EFEKTIVITAS PEMANFAATAN RUMPON PADA OPERASI PENANGKAPAN IKAN DI PERAIRAN KEI KECIL, MALUKU TENGGARA Simbolon, Domu; Jeujanan, Benediktus; Wiyono, Eko Sri
Jurnal Marine Fisheries Vol 2, No 1 (2011): Marine Fisheries
Publisher : Jurnal Marine Fisheries

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One of ways to increase the fishing operation effectiveness is done by using fish aggregating device (FAD) called rumpon. The types of FAD used in Kei Kecil waters made from bamboos or plastic drum material. This research objectives are (1) determining catch composition around FAD, (2) comparing the effectiveness of two types of FAD on fishing operation, and (3) comparing the effectiveness of fishing gears, operated around the FAD. The method that used in this research was doing survey through observing fishing activities around the FAD. Fishing gear and FAD samples were determined through purposive sampling method. These data were collected from August to October 2007 in Kei Kecil Waters of South East Maluku. The kind of fish catch around FAD were scad mackerel, frigate mackerel, and barred spanish mackerel. The most dominant of catch was scad mackerel (80%), whereas percentage e of frigate mackerel and barred spanish mackerel were 19% and 1%. The composition of the length size of scad mackerel, frigate mackerel, and barred spanish mackerel were dominated by the large size. Type of bamboo FAD was more efective compared with the plastic drum FAD type. Purse seine fishing was more efective compared with gillnet and troll line fishing that operated around rumpon.
ZONASI PEMANFAATAN KAWASAN PERIKANAN TANGKAP DI TELUK BANTEN (Zonation of Utilization Fishing Zone in Banten Bay) Ernaningsih, D.; Simbolon, Domu; Wiyono, Eko Sri; Purbayanto, Ari
Jurnal Marine Fisheries Vol 2, No 2 (2011): Marine Fisheries
Publisher : Jurnal Marine Fisheries

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Utilization of fishing area in Banten Bay by various activities may cause multi sectors conflicts related to management of the bay. The integrated zone system in that area has not been established yet; therefore it is needed to be studied. The objectives of this study were to 1) determine fishing season and fishing ground; 2) determine indicators and criteria of fishing zone; 3) establish fishing zone. The study was conducted in four fish landing centers which are located in Karangantu, Terate, Wadas, and Kepuh from January to April 2010. Data were collected by surveying analyzed using the fishing season index analysis, relationship analysis between sea surface temperature, chlorophyll-a and fish abundance, and GIS analysis. Based on the results, it were revealed that 1) peak fishing season of pelagic fish was from November to January and demersal fish was from November to December; 2) the catches from fishing grounds surrounding Panjang island were anchovies, trevallies, squids, Indian mackerels, pony fishes, Fringescale sardinella; surrounding Pamujan besar island were threadfin bream, shrimps; and surrounding Tunda island were eastern little tuna, narrow barred king mackerels, black pomfret, red snapper, great trevally, scads, mullets, squids; 3) development indicators of fishing zone were (i) feasibility of fishing ground, (ii) compatibility of fishing gears with fishing grounds, (iii) possibility of conflicts, (iv) infrastructure, (v) carrying capacity of environment; 4) Banten bay water was divided into three fishing zones, they were (i) passive zone, (ii) passive and outboard motor zone, (iii) active and inboard motor zone.Key words: fishing ground, fishing zone, utilization
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) Himelda, Himelda; Wiyono, Eko Sri; Purbayanto, Ari; Mustaruddin, Mustaruddin
Jurnal Marine Fisheries Vol 2, No 2 (2011): Marine Fisheries
Publisher : Jurnal Marine Fisheries

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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.Key words: resources analysis, sardine oil fisheries, Bali Strait
PENDEKATAN FUNGSI DAN KELEMBAGAAN DALAM ANALISIS PEMASARAN IKAN SEGAR DI MALUKU TENGAH (Functional and Institutional Approach in Analysis of Fresh Fish Marketing in the Region of Central Maluku) Apituley, Yolanda M.T.N; Wiyono, Eko Sri; Hubies, Musa; Nikijuluw, Victor P. H
Jurnal Marine Fisheries Vol 1, No 2 (2010): Marine Fisheries
Publisher : Jurnal Marine Fisheries

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Penelitian ini dilakukan di sejumlah pasar ikan segar di Kawasan Maluku Tengah dan bertujuan untuk menganalisis perilaku pasar ikan segar dengan pendekatan fungsi dan kelemba-gaan. Pengetahuan tentang fungsi dan kelembagaan pemasaran berguna untuk mempertimbang-kan bagaimana pemasaran harus dilakukan, mengevaluasi biaya pemasaran akibat adanya perbedaan perlakuan serta mempertimbangkan sifat dan karakter dari pedagang perantara, hubungan agen dan susunan/perlengkapan organisasi. Hasil penelitian menunjukkan bahwa terdapat empat rantai pemasaran ikan segar di Kawasan Maluku Tengah dan fungsi jual, risiko, biaya dan informasi pasar dilakukan oleh semua lembaga yang ada pada setiap saluran pemasaran. Peran pedagang pengumpul dalam menentukan harga ikan di pasar sangat besar. Strategi pedagang untuk menarik pembeli adalah dengan menambah satu atau dua ekor ikan kepada pembeli. Pedagang jarang menurunkan harga jual ikan, namun ketika satu atau dua ekor ikan ditambahkan kepada konsumen, secara tidak sengaja pedagang telah menurunkan harga jual ikan. Kata kunci: Maluku Tengah, fungsi dan kelembagaan, pemasaran
PARAMETER BIOLOGI IKAN KERAPU (Epinephelus sp.) HASIL TANGKAPAN DI PERAIRAN TAMAN NASIONAL WAKATOBI, SULAWESI TENGGARA INDONESIA (Biological Parameters of Grouper (Epinephelus sp) Caught in Wakatobi National Park, Southeast Sulawesi, Indonesia) Tadjuddah, Muslim; Wiryawan, Budy; Purbayanto, Ari; Wiyono, Eko Sri
Jurnal Marine Fisheries Vol 4, No 1 (2013): Marine Fisheries
Publisher : Jurnal Marine Fisheries

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 Studi ini mengidentifikasi parameter ikan kerapu yang terdiri dari hubungan panjang-berat, tingkat kematangan gonad dan indeks kematangan gonad yang tertangkap dengan pancing hekaulu, bubu dan panah. Penelitian ini bertujuan menganalisis karakteristik parameter biologi ikan kerapu berdasarkan pendekatan beberapa parameter populasi ikan. Penelitian ini dilaksanakan di perairan Taman Nasional Wakatobi dari bulan Oktober sampai dengan Desember 2010. Pengambilan data biologi ikan kerapu ini dilaksanakan di perairan P. Wangi-wangi, P. Kaledupa dan P. Tomia.  Pengambilan data pata panjang dan berat ikan langsung dilakukan di lapangan sedangkan data TKG dan IKG dilaksanakan pada lokasi yang telah ditentukan sesuai dengan metodologi. Hasil penelitian menunjukkan pertumbuhan ikan kerapu dengan panjang infinity (L∞) sebesar, 59,43 cm, koefisien pertumbuhan  (K) sebesar 0,460 dan umur teoritis (t0) sebesar 0,2540. Pola pertumbuhan ikan kerapu yang tertangkap pada fishing ground pancing hekaulu dan bubu bersifat allometrik negatif  sedangkan yang tertangkap dengan panah bersifat  isometrik. Pada fishing ground alat tangkap bubu menangkap ikan kerapu dalam kondisi tidak matang gonad sebesar 62,5% dengan nilai indeks gonad berkisar 0,3680-0,8996 dan hanya 37,5% saja yang dalam kondisi matang gonad dengan nilai indeks gonad berkisar 1,0059–1,1058.Kata kunci: parameter biologi, kerapu, pancing hekaulu, bubu, panah, Taman Nasional Wakatobi