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FOOD HABITS AND LENGHT-WEIGHT RELATIONSHIP OF LUKAS FISH (Labiobarbus leptocheilus Valenciennes) IN GAJAH MUNGKUR RESERVOIR CENTRAL JAVA

BIOVALENTIA: Biological Research Journal Vol 3, No 2 (2017)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

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Abstract

The Research about the food habits and length-weight relationship of Labiobarbus leptocheilus Valenciennes was conducted from May to September 2010. The aims of this research were to find out the food habits and to analyze the growth pattern of Labiobarbus leptocheilus Valenciennes. The sampling of fishes was conducted on May 2010 in the Gajah Mungkur Reservoir, Central Java. The sampling of fishes was conducted by using survey on the landing place of fishes (TPI Mina Tirta). The methods of analysis of food habits by using the Index of preponderance. The results of this research obtained were 19 samples of Labiobarbus leptocheilus Valenciennes, the length between 15-20 cm, with the weight between 40-90 grams. Labiobarbus leptocheilus Valenciennes had the negative allometric growth pattern (b <3). The laboratory analysis of food habits showed that the food habits of Labiobarbus leptocheilus Valenciennes were detritus with Index of Preponderance (IP) 82.95% and plankton with IP 17.05%.Keywords: food, habits, length-weight, relationship, Labiobarbus leptocheilus

STRIPED CATFISH (Pangasianodon hypophthalmus) (SAUVAGE, 1878) MOVEMENT AND GROWTH IN GAJAH MUNGKUR RESERVOIR, CENTRAL JAVA

Indonesian Fisheries Research Journal Vol 21, No 1 (2015): (June 2015)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Movement is an essential mechanism by which mobile animals acquire the resources necessary for the successful completion of their life-cycles. Striped catfish (Pangasianodon hypophthalmus) contributed about 384 tonnes or approximately 40,04% to the total fish production in Gajah Mungkur reservoir. Diversion of Keduang River, one of Gajah Mungkur important inlets, could affect the the movement of this fish. The objective of this research were to analyze data related to the movement patterns and growth of Pangasianodon hypophthalmus. Field works were conducted from March to December 2011 by tagging experiment of large fish with the PDS-Tags and the T Bar-Tags for the small ones. Fish samples used for the experiment were collected from fisherment catch in Gajah Mungkur reservoir. The tag numbers, the release time, and the fish size were noted before releasing the tagged fish were released. Fishermen who caught the tagged fish were advised to report the fish tag number, time of catching, and fish size. The results showed that the Pangasianodon hypophthalmus could moved as far as 200 m to 15 km in 3- 176 days. In the rainy season most of the catfish moved far into the inlet wiroko and Keduang, and some to the inlet Wuryantoro. Pangasianodon hypophthalmusin Gajah Mungkur Reservoir had growth equation of Lt= 99(1-e 0.762(t-0.15)), with the growth coeficient (K)= 0.762/year, t0=0.15 year, infinity length (L”)= 99 cm. Water diversion of Keduang river, one of Gajah Mungkur inlets, did not fully dried the River during dry season and affected striped catfish movement and growth.

PROSPEK PENGEMBANGAN PLASMA NUTFAH IKAN BAUNG (Mystus nemurus C.V.l

BAWAL Widya Riset Perikanan Tangkap Vol 1, No 1 (2006): (April 2006)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

lkan baung (Mysfus nemurus C V.) termasuk ikan asli perairan umum yang mempunyai nrlai ekonomi yang cukup tlnggi dan layak untuk dibudidayakan, seperti halnya ikan-ikan perairan umum lainnya (jelawat, patin, lampam,tembakang, dan lain-lain). lkan ini berpotensi untuk diekspor baik di tingkat konsumsi mautun di tingkat benih. Masalah yang dihadapi dalam budi daya adalah pertumbuhannya retatif lambat dibandingkan ikan patin, terutama pada saat air surut pada musim kemarau pertumbuhan sangat lambat bahkan minusdibandingkan pada saA air besar atau penghujan. lkan baung bersifat karnivora tetapi sudah dapat tumbuh baik dengan pakan berbentuk pelet, baik komersil maupun racikan Induk betina memiliki fekunditas yang tinggi dengan Jumlah telur dari 2.500 sampai dengan 128.000 dari bobot 300 sampai dengan 1 250 g, induk jantan juga memiliki sperma yang cukup banyak terutama di daerah Jambi dan Riau. Selain itu, memiliki ukuran yang relatif besar-besar dibanding ikan baung dari Sumatera Selalan (Palembang). perbaikan mutu genetik ikan baung akan sangat berguna bagj pengembangan budi daya di masa yang akan datang.

TINGKAT KESUBURAN PERAIRAN WADUK KEDUNG OMBO DI JAWA TENGAH

BAWAL Widya Riset Perikanan Tangkap Vol 4, No 1 (2012): (April 2012)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Waduk Kedung Ombo merupakan waduk serbaguna dimanfaatkan sebagai irigasi persawahan, pembangkit tenaga listrik, sumber air minum, pariwisata, perikanan budidaya dan perikanan tangkap. Limbah aktivitas manusia tersebut akan mempengaruhi tingkat kesuburan perairan dan komunitas biota didalamnya.  Penelitian ini bertujuan untuk mengetahui tingkat kesuburan perairan di waduk Kedung Ombo di lakukan dengan metode surve dari bulan Februari hingga Desember 2010. Contoh air untuk pengamatan parameter kesuburan yaitu suhu, kecerahan, oksigen, nitrogen total, fosfor total dan klorofil a diambil dari enam stasiun pada tiga kedalaman yaitu permukaan (0 m), 3 m, 5 m dan, dasar perairan. Tingkat kesuburan perairan ditentukan dengan pendekatan   trophical index (trix). Hasil  penelitian menunjukkan bahwa kualitas perairan waduk Kedung Ombo secara umum termasuk perairan eutrofik dengan nilai rata-rata yaitu: ’trix’ 5,5; kecerahan perairan 91 cm,  klorofil 18.37 µg/l, total N=0,37 ppm; dan total P =  0,046 ppm. Kedung Ombo reservoir is a multipurpose reservoir used as irrigation, hydrolic power, sources of drinking water, tourism, fisheries.  The trophic status of the reservoir can be affected by wastes from agricultural, human settlement  and floating net cages fish culture. Inventory field survey in order to know the trophic state of Kedung Ombo reservoir was conducted from February to December 2010..  Water samples used to measure the trophic state such as water temperature, dissolved oxygen, total nitrogen, total phosphorus and chlorophyll a, were collected from 5 sampling sites at three depth; water surface (0 m), 3 m, 5 m and closed to surface sediment. The trophic state of Kedung Ombo Reservoir was estimated with Trix index. The results revealed that Kedung Ombo Reservoir was classified as eutrophic waters with trophic index (Trix index),transparency, chlorophyll a, total nitrogen and total phosphorus mean values were  5.5, 91 Cm,  18.37µg/l, 0,37 ppm,and  0.046 ppm respectively.

KAJIAN KUALITAS PERAIRAN UNTUK PERIKANAN DI RAWA PENING JAWA TENGAH

BAWAL Widya Riset Perikanan Tangkap Vol 8, No 3 (2016): (Desember, 2016)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Perairan Rawa Peningmerupakan tipe perairan yang tergenang dan mempunyai arti penting bagi perikanan. Masalah utama yang ada di Rawa Pening yaitu pendangkalan karena sedimentasi dan eutrofikasi yang disebabkan pencemaran air berasal dari limbah rumah tangga, pertanian dan budidaya perikanan. Penelitian ini bertujuan untukmengetahui tingkat kesuburan perairan dan kualitas air di Rawa Pening. Penelitian dilakukan pada bulan Mei, Juni, Agustus dan Oktober 2013. Frekuensi pengambilan contoh dilakukan empat kali yaitu pada bulan Mei, Juni,Agustus dan Oktober. Stasiun pengamatan meliputi:A. Tengah (Puteran); B.Muara sungai (Torong); C.Area KJA; D. Pemotongan eceng Gondok (tengah 1); E. Sungai keluar (Tuntang); F. Muara sungai (Muncul); G. Tidak ada pemotongan eceng gondok (tengah 2). Data tingkat kesuburan perairan dianalisis dengan metode Carlon’s.Hasil penelitianmenunjukkan bahwa Rawa Pening termasuk katagori perairan dengan tingkat kesuburan tinggi, nilai Thropic State Index (TSI) pada semua stasiun pengamatan berkisar antara 57,22 - 68,06. Kondisi kualitas air yang kurang baik tersebut akanmerugikan perikanan, seperti kejadian kematian ikanmasal, lambatnya pertumbuhan ikan dan penurunan daya dukung perairan.The Rawa Pening waters is a lentic water and has significance for fishery. The main problems in Rawa Pening are silting due to sedimentation and eutrophication due to water pollution from household waste, agriculture and fisheries. The study aims to examine trophic level and water quality. The research conducted on May, June, August and October 2013. There was 7 stations i.e. A. middle (Puteran); B. inlet of Torong; C. Location of aquaculture;D. locations where harvesting of water hyacinth occurred (middle1); E. outlet (Tuntang); F. inlet (Muncul); G. location where no harvest of water hyacinth (middle 2). Trophic level were analyzed by Carlon’s method. The results showed that Rawa Pening waters categorized as the high eutrophication level where the Trophic State Index (TSI) was 57. 22 to 68. 06. The low water quality will be detrimentaled to fisheries, such as mass fish death, slow fish growth and also a decline of carrying capacity of ecosystem.

INVENTARISASI JENIS DAN STRUKTUR EKOLOGI ZOOPLANKTON DI SUNGAI MUSI BAGIAN HILIR, SUMATERA SELATAN

Jurnal Penelitian Perikanan Indonesia Vol 14, No 3 (2008): (September 2008)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Penelitian yang bertujuan untuk mengetahui struktur komunitas zooplankton di Sungai Musi bagian hilir telah dilakukan pada bulan Mei, September, dan Januari 2007. Penelitian dilaksanakan dengan menggunakan metode survei pada 9 lokasi. Pemilihan lokasi pengambilan contoh dengan menggunakan purposive sampling didasarkan pada mikrohabitat. Contoh zooplankton diambil dengan menggunakan ember 10 l dan total volume yang disaring dengan plankton net 150 l. Parameter yang diukur meliputi kelimpahan, komposisi jenis, keragaman, keseragaman, dan indeks dominasi zooplankton. Hasil analisis jumlah spesies zooplankton yang tertinggi dijumpai pada bulan September dan terendah pada bulan Mei. Indeks keragaman dan kelimpahan zooplankton pada Mei 2006 dan Januari 2007 berkisar antara 0 sampai dengan 2,2 dan 0,8 sampai dengan 21x103 ind.m-3. Indeks keseragaman bervariasi. Nilai yang tertinggi diperoleh pada bulan Januari (0,8 sampai dengan 1), sedangkan bulan Mei dan September 2006. Pada September dan Mei lebih bervariasi dengan kisaran nilai masing-masing 0,6 sampai dengan 1 dan 0,6 sampai dengan 0,9. Selanjutnya untuk dominasi jenis, terdapat 2 stasiun yaitu Sebokor (bulan Mei) dan Selat Cemara (bulan September), yang didominasi 1 jenis zooplankton. Research with aiming to know the community structure of zooplankton at the down stream of Musi Rivers was conducted in May and September 2006, and January 2007. The work was done with field survey method at nine sampling sites, that were set up by using purposive sampling method based on the difference an microhabitat. Samples for zooplankton were collected by using 10 l bucket to sample a total of 150 l of water, and the total volume of wals filtered by using plankton net. Parameters measured include the abundance, spesies composition, diversity, similarity, and dominance index of zooplankton. Results show that the highest number of zooplankton species was found in September while the lowest one was recorded in May. The diversity index and abundance zooplankton in May 2006 and January 2007 were between 0 until 2.2, and 0.8 until 21x103 ind.m-3, respectively. The similarity index varied. The highest value was recorded in january (0.8 until 1) while in may and september 2006 were 0.6 until 1 and 0.6 until 0.9, respectively. Zooplankton was dominanted sebokor and cemara sampling sites.

PENELITIAN BIOLIMNOLOGI SUMBER DAYA PERAIRAN BARU BEKAS TAMBANG TIMAH DI PULAU BANGKA DAN BELITUNG UNTUK BUDI DAYA IKAN

Jurnal Penelitian Perikanan Indonesia Vol 5, No 1 (1999): (Vol.5 No. 1 1999)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Penelitian biolirunologi pada kolong-kolong bekas tarnbang timah di Pulau Bangka clan Puiau Belitung telah dilakukan pada tahun 1995

AKTIVITAS PENANGKAPAN DAN DISTRIBUSI UDANG GALAH (Macrobrachium rosenbergii) DI DAERAH ALIRAN SUNGAI KAPUAS, KALIMANTAN BARAT

Jurnal Penelitian Perikanan Indonesia Vol 14, No 2 (2008): (Juni 2008)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Suatu riset yang bertujuan untuk mendapatkan data dan informasi tentang aktivitas penangkapan dan distribusi udang galah (Macrobrachium rosenbergii) di daerah aliaran Sungai Kapuas, Kalimantan Barat telah dilakukan dari bulan Juni sampai dengan Desember 2005. Riset dilaksanakan dengan metode survei dengan cara mendatangi lokasi-lokasi tempat ada aktivitas penangkapan udang galah (Macrobrachium rosenbergii). Frekuensi survei 2 kali pada musim kemarau dan 2 kali pada musim hujan. Wilayah perairan yang disurvei adalah daerah aliaran Sungai Kapuas dalam Kabupaten Pontianak, Kota Pontianak, Kabupaten Sanggau, dan Kabupaten Sintang. Data dianalisis dengan metode deskriptif dan tabulasi. Dari survei ditemukan 9 jenis alat tangkap yang digunakan nelayan untuk menangkap udang galah (Macrobrachium rosenbergii) yaitu pancing, rawai, bubu, jala, jaring, blad, rompong, stroom, dan pukat rantau. Catch per unit of effort terkecil terjadi pada alat tangkap bubu yaitu 1,39 g per per unit per jam, terbesar adalah jala yaitu 416,67 g per unit jala per jam. Intensitas penangkapan terlihat dominan di perairan bagian hilir mencakup wilayah Kabupaten dan Kota Pontianak. Distribusi ukuran bobot individu udang galah (Macrobrachium rosenbergii) yang banyak tertangkap oleh nelayan (nilai modus) dari 4 kali survei bervariasi antara 17,73 sampai dengan 40,00 g (Kabupaten Pontianak); 19,31 sampai dengan 47,01 g (Kota Pontianak), 17,79 sampai dengan 45, 35 g (Kabupaten Sanggau), dan antara 25,08 sampai dengan 85,52 g (Kabupaten Sintang). Kualitas air pada habitat tempat udang tertangkap di daerah aliaran Sungai Kapuas dalam batas-batas yang layak untuk mendukung kehidupan ikan dan udang. A study aimed to obtain recent data and information about capture activities and distribution of giant freshwater (Macrobrachiumrosenbergii) prawn in Kapuas River,West Kalimantan was conducted from June to December 2005. Survey method was used in each research stations that are Pontianak district, Pontianak City, Sanggau, and Sintang districts. The stations were selected based on fishing activities and habitat condition. Field survey was completed by conducting 4 times surveys including dry and rainy seasons. Data collected were analyzed by using tabulation and descriptive method. The results showed that there were 9 types of fishing gears commonly used to catch giant freshwater (Macrobrachium rosenbergii) prawn. These fishing gears were : hook and line, long line, pot traps, cast net, gill net, barrier traps, surrounding net, electrical fishing, and surrounding net. Catch per unit effort of the cast net was the highest (416,67 gr per unit per hour, whereas, pot trap was the lowest (1,39 g per unit per hour). Water quality in each stations indicated suitable for aquatic organisms. The capture intensity showed that in downstream(Pontianak District and Pontianak City) was more dominant than in upstream (Sanggau and Sintang Districts). Distribution of weight based on modus indicated variation in each stations, which are 17.73 to 40.00 g (Pontianak District), 19.31 to 47.01 g (Pontianak District), 17.79 to 45.35 g (Sanggau District),and 25.08 to 85.52 g (Sintang District).

STRATEGI PENGELOLAAN IKAN PATIN (Pangasianodon hypophthalmus) DI WADUK GAJAH MUNGKUR JAWA TENGAH

Jurnal Kebijakan Perikanan Indonesia Vol 9, No 2 (2017): (November, 2017)
Publisher : Pusat Penelitian dan Pengembangan Perikanan

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Abstract

Ikan Patin tebaran (Pangasianodon hypophthalmus) di Waduk Gajah Mungkur dapat berkembang biak dengan baik. Pada tahun 2011 produksi hasil tangkapan mencapai 377 ton. Secara ekologi, kondisi perairan Waduk Gajah Mungkur sesuai untuk perkembangbiakan ikan patin karena banyak tersedia pakan alami, terdapat daerah pemijahan terutama di inlet Keduang dan Wiroko, serta tersedia daerah suaka perikanan di sekitar area keramba jaring apung (KJA) milik PT. Aquafarm. Pada awal tahun 2012 terjadi pelanggaran penangkapan ikan di suaka perikanan secara besar-besaran hingga sekarang. Kondisi ini berdampak terhadap produksi perikanan tangkap ikan patin di Waduk Gajah Mungkur yang menurun tajam. Beberapa upaya yang perlu dilakukan untuk memulihkan sumberdaya ikan patin di Waduk Gajah Mungkur diantaranya yaitu pengembalian fungsi suaka perikanan yang berada di area KJA milik PT. Aquafarm, mengoptimalkan pengelolaan berbasis kearifan lokal yang didukung oleh aspek hukum, dan melakukan penebaran ikan patin di Suaka Perikanan.Fish introduction of Stipped Catfish (Pangasianodon hypophthalmus) in the Gajah Mungkur Reservoir can grow and breed well. In 2011, the catch productions of this fish reached 377 tones. Ecologically, water conditions of the reservoir is suitable for breeding of Stripped Catfish because of abundance natural food, a suitable spawning area, especially at the inlets of Keduang and Wiroko, and available of fiheries protection area around the location of   floating net cages (KJA) owned by PT. Aquafarm. In early 2012, there were massively fishing violation in the fishery conserved area until now. This condition has an impact on fisheries production of Stripped Catfish at Gajah Mungkur Reservoir which declined sharply. Some effort needs to be done to restore the resources of Stripped Catfish in Gajah Mungkur Reservoir such as to restore the function of fisheries reserved area located in the floating net cages (KJA) owned by PT. Aquafarm, optimize local local wisdom-based management supported by legal aspects, and stocking Stripped Catfish in the fisheries reserve.

KOMPOSISI DAN LUAS RELUNG MAKANAN IKAN KEPERAS (Cyclocheilichthys apogon, Valenciennes, 1842) DI SUNGAI MUSI [Food composition and niche breadth of beardless barb (Cyclocheilichthys apogon, Valenciennes, 1842) in Musi River]

Jurnal Iktiologi Indonesia Vol 10, No 1 (2010): Juni 2010
Publisher : Masyarakat Iktiologi Indonesia (MII )

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Abstract

Objective of the research was to analysis food habits of beardless barb (Cyclocheilichthys apogon) with observing a composition of prey items. Research was carried out in June 2006, August 2006, and January 2007 in Musi River alongside the upstream and downstream using cast net and experimental gillnet. Stomach content analysis was based on index of preponderance and niche breadth. Beardless barb analyzed during research about 159 individuals fish with total length ranging from 57-175 mm and weight ranging from 1.88-71.79 gram. Beardless barb is omnivorous having the character of euryphagic with plant (54.98) as basic food; detritus (19.05), worm (9.30), phytoplankton (8.22), insect (4.89) as secondary food; and zooplankton (3.57%) as supplement food. Difference of sex, size, habitat, and research time did not cause change and difference of resources utilization by beardless barb in the Musi River. Female of beardless barb in upstream Musi River has different resources utilization with increasing of resources utilization of animal organism which is estimated to has relation of requirement of reproduction energy. Equality of resources (food organism) which utilization by beardless barb in various sex and size, was conducive existence of emulation when food resources in limited condition.