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All Journal Jurnal Ilmu Pertanian Indonesia Journal of Marine and Aquatic Sciences Jurnal Biologi Udayana Bumi Lestari Ecotrophic, Journal of Environmental Science Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Current Trends in Aquatic Science Jurnal Perikanan
Made Ayu Pratiwi
Program Studi Manajemen Sumberdaya Perairan (Department Of Aquatic Resources Management) Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Other

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Pertumbuhan Ikan Tongkol Abu-Abu (Thunnus tonggol) yang Didaratkan di Pangkalan Pendaratan Ikan (PPI) Kedonganan Muhammad Alfiansyah Mahmud; I Wayan Restu; Made Ayu Pratiwi; Gde Raka Angga Kartika
Current Trends in Aquatic Science Vol 2 No 2 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Longtail Tuna fish (Thunnus tonggol) is one of economically important fish in the Bali Strait. The aim of this study was to assess the growth study of Longtail Tuna fish in the Bali Strait so as to provide an overview of the conditions and threats of Longtail Tuna fish landed at PPI Kedonganan. The study was conducted in November 2018 - January 2019. Data analysis consist of species composition, distribution of long frequencies, patterns and parameters of growth. Data processing was performed using Microsoft Excel and FISAT II. The results shown that Longtail Tuna fish landed at PPI Kedonganan included in fishermen's by-catchs and have a range of 418 mm - 643 mm. Longtail Tuna fish landed at PPI Kedonganan have growth pattern that is negative allometric (length increase is more dominant than weight gain) and parameters of growth asymptotic length (Loo) is equal to 675.15 mm with growth coefficient (K) is 0.10/month in and a life span is 164 months.
Produksi dan Pertumbuhan Ikan Lemuru (Sardinella lemuru) yang Didaratkan di PPI Kedonganan, Bali Indah Nurtira; I Wayan Restu; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Lemuru fish resource is one of the fish resources which has important economic value and is of interest to the wider community. Therefore, this resource has been exploited intensively in the Bali Strait and has become the backbone of fishery business activities in the waters. This research was conducted in November-February 2021 at PPI Kedonganan, Bali. This study aims to analyzed the production and growth of Lemuru fish which includes trend analysis and catch composition, growth patterns, length frequency distribution, age groups, and growth parameters of Lemuru Fish. This study found that lemuru fish in PPI Kedonganan had trend an increasing of 99%. Primary data collection in this study, such as measurement of length and weight, was carried out with time intervals of ± 14 days. Lemuru fish that were measured were 600 fish which had a range of 100.2-158.3 mm. Fork lengths ranged from 114.2 to 120.2 mm, consisting of 3 age groups separated by the NORMSEP method using software FISAT II. The shift of the age group to the right 2 times showed that there is growth in the Lemuru fish stock. Based on the length and weight analysis, the results of the analysis of the growth pattern of Lemuru Fish are negative allometric, where the length gain is faster than the weight gain. Lemuru fish has an asymptotic length of 179.6312. This showed that the asymptotic length of Lemuru Fish continues to decrease every year, presumably due topressure overfishing which causes the fish caught to be smaller.
Aspek Pertumbuhan Ikan Lemuru (Sardinella lemuru) Yang Didaratkan di Pelabuhan Perikanan Nusantara (PPN) Pengambengan, Bali Kindy Nurrani Annisa; I Wayan Restu; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 4 No 1 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

The growth aspect is important for the preparation of fish resource management because fish conditions can be described by the growth data. This study was conducted to examine aspects of the growth of Lemuru fish landed in PPN Pengambengan in the period of October-December 2019, as input in the preparation of a sustainable management plan for Lemuru fisheries. Data analysis was including growth patterns, length distribution, age groups, and growth parameters. The results of the analysis on the growth aspects obtained Lemuru Fish growth patterns are positive allometric, meaning that the proportion of energy from food is allocated maximally by Lemuru Fish for weight growth. The distribution of Lemuru fork length ranges from 115-196.3 mm with the mode found in the 155.7 mm, this means that Lemuru fish are in the adult stage. This stock is growing, marked by 2 age groups with 2 shifts of the age group towards the right. Asymptotic length of Lemuru Fish has decreased, this condition is thought to be the impact of overfishing.
Pengaruh Penambahan Bacillus sp. Terhadap Kelulushidupan Pasca Larva Udang Vannamei (Litopenaeus vannamei) Yang Terinfeksi Vibriosis. Yufinta Cahya Permanti; Pande Gde Sasmita Julyantoro; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (674.266 KB) | DOI: 10.24843/CTAS.2018.v01.i01.p12

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan bakteri Bacillus sp. terhadap tingkat kelulushidupan pasca larva udang putih Litopenaeus vannamei yang diuji tantang dengan bakteri patogen Vibrio harveyi.Penelitian dilakukan secara eksperimental menggunakan Rancangan AcakLengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan. Perlakuan A (kontrol) yaitu tanpa penambahan bakteri, perlakuan B yaitu dengan penambahan bakteri V. harveyi 106 CFU/ml, perlakuan C ditambahkan bakteri Bacillus sp. 105 CFU/ml, dan perlakuan D dengan penambahan V. harveyi 106 CFU/ml dan bakteri Bacillus sp. 105 CFU/ml pada air kultur. Kelimpahan bakteri dihitung pada akhir penelitian pada media TCBS dan LB Agar untuk mengetahui persistensi bakteri pada air kultur. Seluruh data diuji secara statistik menggunakan One Way Anova kemudian dilanjutkan dengan Uji Tukey. Hasil penelitian menunjukkan bahwa penambahan Bacillus sp. pada udang yang terinfeksi vibriosis (perlakuan D) mampu menghasilkan persentase kelulushidupan sebesar (82.6 ± 2.3)% dan berbeda nyata (p<0,05) dibandingkan dengan tanpa penambahan Bacillus sp. (perlakuan B) yang hanya memiliki persentase kelulushidupan sebesar (49.3 ± 4.6)%. Sedangkan persentase kelulushidupan tertinggi masih didapatkan pada perlakuan A (85,3 ± 4,6)%. Menariknya, penambahan Bacillus sp. pada udang yang tidak terinfeksi vibriosis (perlakuan C) ternyata menghasilkan persentase kelulushidupan yang lebih rendah (69.3 ± 4.6)% daripada kontrol. Hal ini mengindikasikan bahwa penambahan bakteri Bacillus sp. mampu meningkatkan kelulushidupan pasca larva UdangVannamei yang terinfeksi vibriosis.
Pendugaan Potensi Lestari Ikan Layang (Decapterus spp) yang Didaratkan di PPN Pengambengan S.A NYOMAN PUTRI TRIANTINI; I Wayan Arthana; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 4 No 1 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Scad fish is one of the main catches of fisherman who land their fish at Pengambengan Nusantara Fisheries Port (NFP). The method used in this study is the method of observation and interviews. Fish sampling in the study using a simple random sampling. The scad fish species which were found during the study were Decapterus macrosoma and D. kurroides. This study aimed to know about the distribution of fish length frequency, fish growth pattern, the estimation of sustainable fish potential and the estimation of utilization level of Scad Fish in Pengambengan NFP. The distribution frequency of female Scad Fish dominate the class interval of 197 – 204 mm and male Scad Fish dominate the class interval of 169 – 176 mm. The growth patterns of either male and female Scad Fish are negative allometric, with a W = 0,00001L2,9497 length-weight relationship for male Scad Fish and W = 0,00002L2,8089 length-weight relationship for female Scad Fish. The estimation of sustainable potential is carried out by using scheafer approach, MSY of Scad Fish acquire arround 2.646,911 ton/year with Fmsy 1123 trips/year. Based on data from 2009 – 2018, the utilization status of Scad Fish in Pengambengan NFP had undergone three diffrent states, the low and developing state in 2009 – 2017, and the overfishing status in 2018.
Pengelolaan Populasi Ikan Nila (Oreochromis niloticus) Alami di Danau Batur, Bangli, Bali Sang Ayu Indah Sukma Dewi; I Wayan Arthana; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 2 No 2 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Kegiatan penangkapan ikan di Danau Batur masih sering dilakukan oleh nelayan tradisional dengan ikan hasil tangkapan dominan yaitu Ikan Nila (Oreochromis niloticus). Penelitian ini bertujuan untuk mengetahui kelimpahan juvenil, mengetahui hubungan panjang berat, mengetahui frekuensi panjang ikan hasil tangkapan Nelayan dan mengetahui bagaimana upaya pengelolaan Ikan Nila alami di Danau Batur. Penelitian dilaksanakan di lima stasiun yaitu Terunyan, Abang, Buahan, Toyo Bungkah dan Songan pada bulan Desember 2018 hingga Januari 2019. Metode yang digunakan adalah metode purposive sampling untuk pengambilan sampel kelimpahan juvenil dan metode penarikan contoh acak kelompok (PCAK) yang digunakan untuk pengambilan sampel ikan hasil tangkapan nelayan. Titik 1 (daerah yang terdapat banyak tumbuhan air) dan titik 2 (daerah yang terdapat medium tumbuhan air) merupakan titik yang memiliki kelimpahan juvenil Ikan Nila tinggi yaitu 4 ind/m3. Dari lima stasiun pengambilan sampel, desa Toyo Bungkah memiliki kelimpahan juvenil tertinggi dibandingkan dengan desa lainnya yaitu 5 ind/m3 . Pola pertumbuhan Ikan Nila yang didapat tergolong allometrik negatif ( b= 2.52) untuk Ikan Nila jantan dan (b= 2.58) untuk Ikan Nila betina. Sebanyak 16% Ikan Nila jantan dan 32% Ikan Nila betina hasil tangkapan nelayan yang sudah matang gonad. Pengelolaan populasi Ikan Nila di Danau Batur dapat dilakukan melalui tiga cara yaitu restocking, menangkap Ikan Nila yang sudah siap dikonsumsi dan melakukan perbaikan lingkungan.
Kajian Kesesuaian Pulau Pasir Putih Dalam Kerangka Pengembangan Ekowisata Bahari Di Pantai Sumberkima, Buleleng, Bali Cintya Kriss Jayanthi; I Wayan Restu; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 2 No 1 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Penelitian ini bertujuan untuk mengetahui tingkat kesesuaian, daya dukung dan strategi pengembangan di kawasan diperairan Pulau Pasir Putih, untuk kegiatan rekreasi pantai, berenang dan wisata lamun kategori snorkeling. Metode yang digunakan adalah observasi dengan analisa komperatif dan analisis SWOT. Berdasarkan hasil observasi, Pulau Pasir Putih memiliki potensi ekologis yang masih alami seperti pasir yang berwarna putih dan kondisi perairan yang jernih. Hasil yang diperoleh dari perhitungan indeks kesesuaian kawasan wisata untuk kegiatan rekreasi dan berenang adalah 86,8% atau tergolong kategori sangat sesuai (S1) , begitu juga nilai kesesuaian untuk wisata lamun kategori snorkeling tergolong kategori sangat sesuai (S1) dengan nilai 92,5%. Daya Dukung Kawasan Perairan Pantai Pulau Pasir Putih untuk kegiatan wisata rekreasi pantai sebesar 59 orang perhari, wisata berenang 27 orang perhari dan wisata lamun kategori snorkeling 136 orang per harinya. Hal tersebut dapat dibandingkan dengan jumlah pengunjung yang datang ke pulau tersebut berdasarkan pengamatan berkisar 10 orangp erhari. Analisis SWOT diperoleh 4 rencana strategi pengembangan utama pada strategi SO atau (Growth Oriented Strategy), dengan mengandalkan kekuatan untuk meraih peluang sebesar-besarnya. Dapat diartikan bahwa pemanfaatan wisata di Pulau Pasir Putih baru sebesar 4,5%, sehingga berdasarkan hasil perhitungan daya dukung masih dapat dilakukan pengembangan lagi sebesar 95,5%.
KOMPOSISI JENIS DAN TUTUPAN TERUMBU KARANG DI PANTAI SAMUH, NUSA DUA, BALI Krisna Jumantara Panca Putra; I Wayan Arthana; Made Ayu Pratiwi
Bumi Lestari Journal of Environment Vol 22 No 1 (2022)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2022.v22.i01.p05

Abstract

Terumbu karang dikenal sebagai ekosistem yang sangat kompleks dan produktif dengan keanekaragaman biota seperti moluska, crustacea dan ikan karang. Keragaman hayati karang, fungsi ekologis dan ekonomis tinggi juga di ikuti oleh ancaman yang tinggi dai berbagai aktifitas manusia. Penelitian ini bertujuan untuk mengetahui komposisi jenis dan tutupan Terumbu karang. Penelitian menggunakan metode Purposive Random Sampling. Pengambilan data pada 2 stasiun dengan 3 kedalaman berbeda 3m, 7m, dan 10m dilakukan dengan menggunakan metode transek kuadran 1x1 m2. Penelitian menemukan 15 jenis Terumbu karang di Pantai Samuh meliputi Acropora Baranching (ACB), Acropora Encrusting (ACB), Acropora Submassive (ACS), Acropora Digitate (ACD), Acropora Tabulate (ACT), Non - Acropora Baranching (CB), Non – Acropora Encrusting (CE), Non – Acropora Foliose (CF), Non – Acropora Massive (CM), Non – Acropora Sub Massive (CS), Non – Acropora Mushroom (CMR), Non – Acropora Millepora (CME), Non – Acropora Helliopora (CHL), Soft Coral (SC), Sponge (SP), Zoanthida (ZO), Other (OT). Persentase tutupan Acropora lebih tinggi dibandingkan karang lainnya. Persentase tutupan Terumbu karang tertinggi terdapat di kedalaman 10 m sebanyak 94,75%, terendah di kedalaman 3 m sebanyak 80,66%. Berdasarkan hasil analisis diperoleh kondisi penutupan Terumbu karang di Peraian Pantai Samuh secara umum tergolong dalam kategori baik sekali dan terjaga.
Penilaian Kondisi Teknik Penangkapan Ikan Lemuru (Sardinella lemuru) Berdasarkan Pendekatan EAFM di PPI Kedonganan, Bali Atanasius Jenarut; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Ecosystem Approach to Fisheries Management (EAFM) is a management concept through an integrated and ecosystem-based approach. This study aimed to describe the condition of Bali Sardinella (Sardinella lemuru) at Kedonganan Fish Port and assess the management of this species based on the EAFM fishing technique domain. The assessment method refers to the methodology used by the National Working Group on EAFM, Directorate of Fish Resources, Ministry of Marine Affairs and Fisheries of Republic Indonesia, 2014. Data analysis used a Likert score based on ordinal 1, 2, 3 against indicators such as destructive/illegal fishing methods, modification of fishing gear, fishery capacity and fishing effort, fishing selectivity. Then, function suitability indicators and size of the ship is fishing boat crew certification adjusted to the status of Kedonganan fish port. Kedonganan fish port was a small- scale fishery. The scores obtained for each indicator was destructive/illegal fishing methods get a score of 2, modification of fishing gear get a score of 1, while indicators of fishery capacity and fishing effort and fishing selectivity get a score of 3. Lemuru fisheries management at Kedonganan fish port technical classified as good with the composite value of 69.
Aspek Biologi Reproduksi Ikan Tongkol Krai (Auxis thazard Laceoede, 1800) di Perairan Kedonganan, Badung Bali Ni Luh Kade Putri Purwaningsih; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Frigate tuna is one type of small pelagic fish that belongs to the neritic tuna (15-30 mil). This study aimed to determine the reproductive biology aspects of frigate tuna (Auxis thazard). Reproductive biology aspects can be identified by observing the sex ratio, gonad maturity level gonadal maturity index, fecundity and the size of the first gonadal maturity. Sampling was carried out in January – March 2021 with a span of 14 days at the Kedonganan Fish Landing Base. Samples were obtained from local fishermen who do one day fishing. The total fish samples observed during the study were 161 males and 174 females (335 individuals). The sex ratio of male and female tuna is 1:0.9 and is stated to be in a balanced condition. Furthermore, the gonad maturity level, during the study was dominated by levels II and III, with the gonad maturity index of male fish ranging from 6.25 to 8.31 and female fish 6.26 to 8.91. The spawning period for tuna krai in Kedonganan waters occurs in January-March and the peak of spawning occurs in March. The fecundity of krai cobs ranged from 75107 to 750470 grains (average 201.463 grains). The size of the gonads at first maturity of male krai tuna was slower than that of female tuna (321 and 336 in mm).
Co-Authors Ahmad Fauzi Angel Maria Arief Atanasius Jenarut Ayu Padma Sari Bachori Dhian Pratama Cintya Kriss Jayanthi Dewa Gde Tri Bodhi Saputra Elok Faiqoh Endang Wulandari Suryaningtyas Gde Raka Angga Kartika Ghina Nafis Rahmatullah Hanif Abdullah I Made Sara Wijana I Made Suma Krisna Sravishta I Putu Yoga Pramana Putra I Wayan Arthana I Wayan Arthana I Wayan Restu I Wayan Rian Riki Saputra Ida Ayu Novera Wandiani Ima Yudha Perwira Indah Nurtira Ketut Tika Suariningsih Kindy Nurrani Annisa Komang Kerta Sanjaya Krisna Jumantara Panca Putra Luky Adrianto Mawardi Labbaik Muhammad Alfiansyah Mahmud Natasya Caterina Ni Luh Kade Putri Purwaningsih Ni Luh Sari Risna Dwi Jayanti Ni Luh Watiniasih Ni Made Ernawati, Ni Made Ni Putu Putri Wijayanti Nyoman Dati Pertami Pande Ditha Prasatia Pande Gde Sasmita Julyantoro Pratama, I Gusti Agung Bagus Arya Pradnya Putra, I Putu Yoga Pramana Ribka Evanzelina Laia S.A NYOMAN PUTRI TRIANTINI Samba, Roni Adi Sang Ayu Indah Sukma Dewi Suryaningtyas, Endang Wulandari Yufinta Cahya Permanti Yusli Wardiatno