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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 460 Documents
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Partial Characterization of Chitosanase from Bacillus cereus Strain BFE5400 Isolated from Snakehead Fish Intestine Shanti Dwita Lestari; Ace Baehaki; Guttifera Guttifera
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.43746

Abstract

Feeding pattern of wild snakehead fish (Channa striata) which includes shrimp and small crustaceans makes it is intestine a good source of chitinase and chitosanase enzymes. This study aimed to isolate chitosanase producing bacteria from snakehead fish intestine, to select isolate with highest chitosanolytic activity, to produce chitosanase using the selected isolate and partially characterize the resulting enzyme. I2 isolate exhibited the highest chitosanolytic index with the value of 1.5 and produced enzyme with an activity of 0.00331 U/mL after 72 hours incubation. The ultimate bacterial density was at the 24th hour with a turbidity value of 0.5315. The enzyme activity was optimum at pH 6, with a value of 0.00816 U/mL, while the optimum temperature was 70°C with the enzyme activity of 0.00785 U/mL. Genetic identification of I2 isolate using 16S rRNA showed that the isolate has a high similarity to Bacillus cereus strain BFE 5400.
The Discovery of Vibrio harveyi on Litopenaeus vannamei Infected White Feces Disease in Situbondo, East Java Sumini Sumini; Rahayu Kusdarwati
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1444.363 KB) | DOI: 10.22146/jfs.47791

Abstract

This research was conducted to discover Vibrio harveyi infected vannamei shrimp with White Feces Disease (WFD) in Situbondo, East Java Province. This research was conducted in November 2017 until September  2018. All Vibrio isolates from shrimp infected WFD were identified with biochemical tests, Analytical Profile Index/ API 20NE (BioMeriuex), and PCR with specific primers for V. harveyi. Additional parameters were the water quality, plankton brackishwater pond abundance, and antibiotic resistance test. Result showed that from 17 bacterial isolates identified, 10 isolates were V. harveyi (58.82%), three isolates were V. alginolyticus (17.65%), one V. fluvialis isolate (5.88%), one V. parahaemolyticus isolate (5.88%), and two non Vibrio isolates which were identified as Shewanella putrefaciens (11.76%). All isolates of V. harveyi also showed resistance activity on more than one antibiotic. Poor water quality had been identified as abnormal result of pH, alkalinity, salinity, ammonia levels and total organic matter level. Plankton abundance observation showed that Chloropyceae, Diatom, and Dinoflagellata dominated all sampled brackishwater ponds. This research concluded that V. harveyi were discovered on vannamei shrimp with poor water quality and plankton abundance in the pond samples.
Peningkatan Pertumbuhan Rumput Laut Halymenia sp. melalui Penentuan Jarak Tanam Rumpun Siti Fadilah; Dhini Arum Pratiwi
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.34 KB) | DOI: 10.22146/jfs.48254

Abstract

Tujuan penelitian ini adalah untuk menentukan jarak tanam rumpun yang sesuai untuk budidaya rumput laut Halymenia sp. Penelitian dilaksanakan pada bulan September - Oktober 2017 di perairan Desa Patas, Kecamatan Gerokgak, Kabupaten Buleleng, Provinsi Bali. Desain penelitian yang digunakan adalah rancangan acak lengkap (RAL). Satu faktor perlakuan yang diuji adalah jarak rumpun yang terdiri atas 4 taraf perlakuan yaitu 10, 15, 20 dan 25 cm. Tali bentangan yang digunakan panjangnya 15 m dengan jarak antar tali bentangan 1 m dan bobot awal rumpun 50 g. Budidaya dilakukan dengan metode monoline lepas dasar. Pemeliharaan  dilakukan selama 1 siklus (45 hari) dengan sampling pertumbuhan tiap 5 hari dan sampling kualitas air tiap 15 hari. Analisis sampel dilakukan untuk mendapatkan rendemen karaginan dan kualitas air berupa nitrat dan fosfat. Hasil penelitian menunjukkan jarak tanam rumpun 25 cm memberikan laju pertumbuhan terbaik (p<0,5) dan randemen karaginan yang lebih tinggi dari perlakuan jarak 20 cm (p<0.5).
Demographic Characteristics and Noneconomic Outcomes of Women Entrepreneurs with Moderation of Barriers: The Case of Small Enterprises in Rural Coastal Area of Indonesia Ika Nur Putriantini; Yoshi Takahashi
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1039.598 KB) | DOI: 10.22146/jfs.48774

Abstract

As a means of escaping poverty, women often become entrepreneurs while maintaining a traditional occupation and this may limit their ability to take full advantage of entrepreneurial opportunities. This study provides a relevant examination of women entrepreneurs in a rural coastal area of a developing country; as such, it helps contribute to perspectives on demographic characteristics, on the barriers to, and the noneconomic outcomes of women entrepreneurs in the rural areas of developing countries. The results demonstrate that all the demographic characteristics of women entrepreneurs correlate significantly with noneconomic outcomes. Meanwhile, only three of five barriers were found to moderate the relationship between the demographic characteristics and noneconomic outcomes. These barriers are likely to affect the real-world relationship between the demographic characteristics and non-economic outcomes. For that reason, great attentions need to be given for policy makers to improve the presence of small enterprises.
Protective Effect of Microbubble Aeration and Dietary Probiotics BALSS on Survival and Immunity of White Leg Shrimp (Litopenaeus vannamei) Postlarvae against Acute Low Salinity Stress Shima Bhaskara Ayuningrum; Indah Istiqomah; Rustadi Rustadi; Bambang Triyatmo; Alim Isnansetyo; Wiratni Budhijanto; Deendarlianto Deendarlianto
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.791 KB) | DOI: 10.22146/jfs.51258

Abstract

Survival rate and immunity of white leg shrimp ((Litopenaeus vannamei) postlarvae against acute salinity stress were evaluated in indoor experimental trials. The research was conducted with 2x2 factorial design with two levels of aeration (microbubble and macro bubble) and two levels of diet (with and without probiotics) resulting four treatments in triplicate: application of microbubble with gut probiotics (MiP), without gut probiotics (MiC), and macro bubble with gut probiotics (MaP) and without probiotics (MaC). White leg shrimps measuring 7.6 g were maintained in the tanks for 60 days and fed five times a day at a dose of 5% biomass. Harvested shrimp were tested for low salinity stress (5 ppt) for 3 hours. Glucose level, total protein, bactericidal activity, natural agglutination, phenoloxidase, respiratory burst, and superoxide dismutase activities in the hemolymph and the shrimp survival rate (SR) were analyzed before and after the stress tests. Although all examined parameters remained the same between groups before the stress test, significant differences were found among them after the stress test. Microbubble aeration obtained stabilization of hemolymph glucose level, best survival rate, bactericidal activity, and agglutination activities. No significant effect was resulted by the dietary probiotic treatments, but the interaction with aeration treatments revealed the importance to compensate shrimp survival rate when microbubble aeration is unavailable.
Magot Flour Performance in Increases Formula Feed Efficiency and Growth of Nirwana Race Tilapia (Oreochromis sp.) Vini Taru Febriani Prajayati; Otie Dylan Subhakti Hasan; Mugi Mulyono
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.55428

Abstract

Tilapia is an economically important fish and is widely cultivated in Indonesia. More food in tilapia farming uses fish meal which needs to be replaced because of dependence as an imported product that affects production costs. One of the local raw materials that can be used as a source of animal protein is magot. This study aims to analyze the right proportion of magot flour with a combination of fish meal and magot flour in feed so as to produce maximum growth and feed efficiency for tilapia seeds. This research was conducted in September to December 2019. Test fish used were tilapia seeds measuring 1-2 cm with an average weight of 0.16 g with a stocking density of 1 fish / m3. Fish are fed twice a day with a percentage of daily feeding of 3% of fish biomass. This study used a completely randomized design (CRD) with five treatments and three replications. The treatment in this research is, treatment A = substitution of fish meal 100% with magot flour 0%, B = substitution of fish meal 75% with magot flour 25%, C = substitution of fish meal 50% with magot flour 50%, D = substitution of flour fish 25% with 75% magot flour, E = substitution of 0% fish flour with 100% magot flour. Data were analyzed using analysis of variance (ANOVA) if there were significantly different treatment effects followed by Duncan's Multiple Range Test with a significance level of 0.05. The results showed that the addition of magot flour 50% gave a significant result (P <0.05) on protein retention with a value of 14.83%, a specific growth rate with a value of 2.00%, absolute weight growth with a value of 4.34 g, and efficiency of utilization feed with a value of 93.59%. No effects were found in the the feed consumption rate and fish survival. Treatment C combination of 50% fish meal and magot flour can give the best results for the growth of Nirwana race Tilapia.
Efisiensi dan Rasio Konversi Pakan Ikan dengan berbagai Dosis Papain pada Kerapu Cantang (E. fuscoguttatus >< E. lanceolatus) Wiwin Kusuma Atmaja Putra; Suhaili Suhaili; Tri Yulianto
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 1 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.906 KB) | DOI: 10.22146/jfs.55524

Abstract

Pertumbuhan ikan kerapu cantang pada tahap pendederan berkisar 3-4 bulan, pembesaran di keramba jaring apung berkisar 6-7 bulan maka total waktu dibutuhkan sekitar 9 sampai 1 tahun. Pertumbuhan ikan kerapu akan lebih cepat jika diberi pakan ikan rucah dibandingkan dengan pelet. Tetapi ketersedian ikan rucah tidak pasti sehingga penggunaan pellet mesti dilakukan. Maka untuk meningkatkan pertumbuhan dapat dilakukan penambahan enzim papain agar pencernaan dan penyerapan nutrisi pakan dapat maksimal. Penelitian ini bertujuan untuk menentukan dosis pemberian enzim papain dalam meningkatkan nilai efisiensi pakan dan nilai konversi pakan ikan kerapu cantang Epinephelus fuscoguttatus >< E lanceolatus. Penelitian ini dilakukan pada bulan Oktober – November 2019 selama 6 minggu (42 hari) di Hatchery Skala Rumah Tangga (HSRT) Koperasi Marin Agri Sejahtera, Kota Tanjungpinang Kepulauan Riau. Metode yang digunakan ialah eksperimental dengan Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan tiga kali ulangan dimana perlakuan K (tanpa pemberian enzim papain), perlakuan A (dosis enzim papain 2,75%), perlakuan B (dosis enzim papain 3,75%), perlakuan C (enzim papain 4,75%). Analisis data menggunakan One-Way ANOVA dan uji lanjut Tukey menunjukkan bahwa pemberian dosis enzim (4,75%) atau perlakuan C, merupakan hasil terbaik dimana hasil yang didapatkan pada nilai efisiensi pakan (74,73±7,14 %), rasio konversi pakan (1,37±0,14), pertumbuhan bobot mutlak sebesar (19,97±2,81 g) dan kelangsungan hidup (100±0,00 %). Rekomendasi dari penelitian ini adalah penambahan enzim papain dengan dosis 4,75% dapat memberikan keuntungan pertumbuhan, efisiensi pakan, kelangsungan hidup lebih tinggi dan rasio konversi pakan lebih rendah
Struktur Komunitas Ikan di Hilir Sungai Cimanuk Provinsi Jawa Barat pada Musim Penghujan Titin Herawati; Rajib Abdul Rahman Sidik; Asep Sahidin; Heti Herawati
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 2 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.47655

Abstract

Sungai Cimanuk merupakan sungai kedua terbesar yang ada di Provinsi Jawa Barat setelah Sungai Citarum. Hulu Sungai Cimanuk berada di Gunung Papandayan, Kabupaten Garut, dan bermuara ke Laut Jawa di Kabupaten Indramayu. Riset ini bertujuan untuk mengungkap struktur komunitas ikan yang hidup di hilir Sungai Cimanuk pada musim penghujan bulan Desember 2018 hingga Februari 2019. Riset ini menggunakan metode observasi lapangan dan teknik pengambilan sampel secara sensus di empat stasiun pada koordinat antara 6°39’38,01’’LS 107°13’52,33’’BT sampai 6°16’25,26’’LS 108°14’5,17’’BT. Pengambilan sampel dilakukan satu bulan sekali. Parameter yang diamati yaitu kelimpahan, keanekaragaman, dominansi, keseragaman, struktur komunitas dan kualitas air. Ikan yang dikumpulkan selama riset berjumlah 347 ekor ikan yang menunjukan bahwa struktur komunitas ikan pada setiap stasiun berbeda. Jenis ikan yang teridentifikasi selama riset sebanyak 26 spesies dari 19 famili. Struktur komunitas ikan di stasiun I dan II tertekan, keanekaragaman sedang, dominansi rendah dan keseragaman rendah. Struktur komunitas ikan di stasiun III tertekan, keanekaragaman rendah, dominansi tinggi, dan keseragaman rendah. Struktur komunitas ikan di stasiun IV labil dengan keanekaragaman sedang, dominansi rendah, dan keseragaman sedang. Kualitas air tiap stasiun yang memenuhi persyaratan baku mutu lingkungan. Struktur komunitas ikan di hilir Sungai Cimanuk berbeda dari labil sampai tertekan, dipengaruhi oleh kualitas air dan kondisi sungai.
Budidaya Rumput Laut Gelidium sp. menggunakan Kantong pada Metode Long Line dan Lepas Dasar Muslimin Muslimin; Nelly Hidayanti Sarira
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 2 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.47799

Abstract

Tujuan penelitian ini adalah untuk mengetahui pertumbuhan rumput laut Gelidium sp. yang dibudidayakan dengan kantong pada dua metode berbeda yaitu long line dan lepas dasar.Rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap (RAL) yang terdiri dari dua metode (long line dan lepas dasar) dan dua perlakuan yaitu : 1. Uji coba bobot awal rumput laut (bobot bibit 10 g, 20 g, 30 g, 40 g, 50 g, 75 g, 100 g, dan 125 g) dan 2. Uji coba jarak tanam antar rumpun bibit (10 cm, 15 cm, 20 cm, dan 25 cm). Masing-masing perlakuan diulang tiga kali.Hasil penelitian menunjukkan bahwa pertumbuhan Gelidium sp.menggunakan metode long line dan lepas dasarberpengaruh nyata terhadap bobot awal dan jarak tanam antar rumpun bibit (P<0,05). Pertumbuhan mutlak perlakuan bobot bibit awal terbesar pada metode long line dan lepas dasar sama yaitu pada bobot 125 g. Laju pertumbuhan harian perlakuan jarak tanam antar rumpun terbesar pada metode long line dan lepas dasar pun sama yaitu pada jarak 15 cm.Budidaya rumput laut Gelidium menggunakan kantong pada metode long line dan lepas dasar memiliki teknis yang sama baik dari segi bobot awal dan jarak tanam antar rumpun bibit.
Tanggung Jawab Masyarakat Lokal pada Konservasi Penyu Hijau (Chelonia mydas) di Pesisir Selatan Jawa Barat Atikah Nurhayati; Titin Herawati; Isni Nurruhwati; Indah Riyantini
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 2 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.48147

Abstract

Populasi penyu adalah bagian dari keanekaragaman hayati. Penyu adalah reptil yang hidup di lautan yang terancam punah, sehingga diperlukan upaya untuk melindungi melalui konservasi penyu. Salah satu daerah konservasi penyu adalah di pantai selatan Provinsi Jawa Barat. Masyarakat memiliki peran penting dalam pengelolaan konservasi penyu. Penelitian ini bertujuan untuk menganalisis tingkat tanggung jawab masyarakat lokal terhadap konservasi penyu di pantai selatan Jawa Barat, Indonesia. Metode yang digunakan dalam penelitian ini adalah metode studi kasus di pantai selatan Jawa Barat. Penelitian ini dilakukan pada bulan Agustus 2018 - Februari 2019. Teknik pengambilan responden menggunakan purposive sampling sebanyak 35 responden. Alat analisis yang digunakan adalah deskripsi kuantitatif. Berdasarkan penelitian ini tingkat tanggung jawab masyarakat lokal dalam konservasi penyu di pantai selatan Jawa Barat, terdiri dari: (1) respon masyarakat lokal terhadap pendidikan dan pengetahuan konservasi penyu memiliki nilai tanggung jawab yang tinggi; (2) respon masyarakat lokal terhadap pengelolaan habitat penyu memiliki nilai tanggung jawab yang rendah; (3) respon masyarakat lokal untuk merubah perilaku melestarikan penyu memiliki nilai tanggung jawab yang rendah; (4) respon masyarakat lokal tentang ancaman kepunahan penyu memiliki nilai tanggung jawab yang rendah; (5) respon masyarakat lokal tentang ekowisata penyu memiliki nilai tanggung jawab yang tinggi. Berdasarkan hasil peneltian disarankan perlu adanya pelatihan yang dilakukan secara kontinue untuk meningkatkan pengetahuan dan pendidikan masyarakat lokal mengenai konservasi penyu serta koordinasi antarstakeholder untuk mengelola kawasan konservasi penyu melalui edukasi ekowisata bahari.

Page 34 of 46 | Total Record : 460

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