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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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Journal : Current Trends in Aquatic Science

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Aspek Reproduksi Ikan Lemuru (Sardinella lemuru) yang Didaratkan di Pelabuhan Perikanan Nusantara (PPN) Pengambengan, Bali Ribka Evanzelina Laia; 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

Sardinella (Sardinella lemuru) is a type of small pelagic fish which very important and economic value in Pengambengan Nusantara Fishing Port (NFP). Sardinella resources are stated to be in overfishing were marked by the catch that is getting smaller and the production has decreased every year. The situation of Sardinella resources in Bali Strait, especially in Pengambengan NFP must be maintained by managing, then stocks of Sardinella can be utilized sustainably. This research aims to provide an overview of conditions and threats to Sardinella around Pengambengan NFP as one of the largest fishing ports in Bali Strait includes Sardinella fisheries production in Pengambengan NFP, sex ratio, gonad maturity level, gonad maturity index, conditions factor, so Sardinella resources can be created sustainable. This research uses a simple random sampling method, by taking fish randomly from traders who contain various lengths and weights of Lemuru in Pengambengan NFP. Lemuru production from 2009-2018 in PPN Pengambengan has increased and decreased, this is due to several factors such as environmental changes and fishing activities by fishermen. The sex ratio of Sardinella landed in Pengambengan NFP has a ratio of 0.8: 1. Gonad Maturity Level obtained in TKG I and TKG II so the Gonad Maturity Index found was around 0.0291-0.2188. The range of condition factors from 0.9-1.4, it means Sardinella in the plump category.Sardinella lemuru; PPN Pengambengan; Reproduction
Kajian Aspek Reproduksi Ikan Tongkol (Auxis thazard) yang Didaratkan di Pantai Segara Kusamba, Bali pada Musim Barat Ni Luh Sari Risna Dwi Jayanti; Ima Yudha Perwira; 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

Frigate Tuna is one of the most economical catched fish at the Segara Beach, Kusamba. This study was aimed to observe the reproduction aspect of Frigate Tuna (Auxis thazard). The reproduction aspect observed in this study were: sex ratio, gonado-somatic index (GSI), gonad maturity level (GML), fecundity, and first length of maturity. The condition factor was also observed in this study. Sampling was carried out from November to December 2019 by collecting 84 individuals of Frigate Tuna fish. The result showed that the sex ratio between male and female showed balance condition with sex ratio value of 1:1.8. Analysis on the gonad showed that Gonado-somatic index (GSI) of male and female were were 0.0124 – 0.0308 % and 0.0142 – 0.0254 %, respectively. The fecundity of the fish was ranging from 106,430.6 to 518,843.9 eggs. The length of the first maturity for male and female was 337.716 ± .012 mm and 333.053 ± 0.009 mm, respectively. Total length of the fish was ranging from 317 to 405 mm, while the body weight was ranging from 414.27 to 854.52 gram.
Aspek Reproduksi Ikan Tongkol Abu-Abu (Thunnus tonggol) Yang Didaratkan Di Pelabuhan Pendaratan Ikan Kedonganan Hanif Abdullah; I Wayan Restu; Made Ayu Pratiwi; Gde Raka Angga Kartika
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Longtail tuna is one of the most important pelagic fish species found in Indo-Pacific waters, living in neritic areas. This study aimed to know about reproduction aspect of Longtail Tuna such as gonado somato index, fecundity and length of first maturity. This research was carried out for 5 months from October 2018 to January 2019. The research was conducted in Kedonganan fish landing port. Data analysis that used was the level of gonad maturity, gonad maturity index, fecundity, sex ratio and length of gonad maturity. Longtail tuna at Kedonganan fish landing port actively reproduce in October 2018. The highest value of maturity index of the gonad in October 2018 at Kedonganan fish landing port, shows that in that month is the peak of spawning season. This is in accordance with the number of fish caught more at the size of gonad maturity level III and IV in that month. Longtail tuna’s fecundity is around 18.000-24.000. Fish sex ratio of male and female is unbalanced. Differences in the number of Male and female is suspected because of differences in fish areas in spawning and foraging. The first length of maturity (Lm) of longtail tuna in the waters of the Kedonganan fish landing port were 488-496 mm fork length.
Kajian Pertumbuhan Ikan Tongkol (Auxis Thazard) yang Didaratkan di Pangkalan Pendaratan Ikan (PPI) Kusamba, Kabupaten Klungkung, Bali Pada Musim Barat Komang Kerta Sanjaya; 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

Abstract Kusamba village is one of the villages with the potential of Frigate Tuna fishery in Bali. Frigate Tuna is one type of fish commodity as main targets because it has economic value. This study aims to determined the fishery activities, growth patterns, and growth parameters of Frigate Tuna (Auxis thazard) at Fish Landing Station (PPI) of Kusamba. The fish samples were sampling by simple random sampling (PCAS) method was taken every twice a week in six month (October 2017-March 2018). Data collecting was directly at Fish Landing Station (PPI) of Kusamba. The results showed that the highest frequency of fish fork lenght was dominated at 247,5 mm – 263,1 mm. That size is an immature fish size because its size is less than the average size of mature fish. The condition factor indicates about the fish have condition factor between 1,152-1,490. The growth pattern of the Frigate Tuna (Auxis thazard) during the study was allometrik negative with the value of b variable is 2,6744 where the length growth was more dominant than weight growth of Frigate Tuna. The value of L? is about 567,016 mm with growth coefficient (K) is 0,0345 years-1. A small value of K can influence the time of the fish reaches its asymptotic lenght.
Tingkat Dekomposisi Bahan Organik pada Sedimen Tambak Udang Vanname di Desa Musi, Kecamatan Gerokgak, Buleleng, Bali Ahmad Fauzi; Ima Yudha Perwira; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Penelitian ini bertujuan untuk mengetahui tingkat dekomposisi bahan organik dalam sedimen tambak udang Vanname. Penelitian dilaksanakan di desa Musi, Kecamatan Gerokgak, Kabupaten Buleleng, Bali. Kegiatan budidaya udang vannamei menghasilkan bahan organik yang terus-menerus terakumulasi pada substrat dasar tambak, sehingga dapat mengurangi kualitas media budidaya dan kualitas perairan di sekitarnya. Penelitian ini dilaksanakan pada bulan April 2019. Sampel sedimen dan sampel air dikumpulkan dari 10 kolam yang dipilih secara acak. Pengambilan sampel sedimen dilakukan melalui saluran pembuangan central/tengah. Sedangkan sampel air diambil secara langsung pada tambak. Karbon organik (OC) diukur dengan menggunakan Metode Walkley and Black, Total Nitrogen (TN) diukur menggunakan Metode disltilasi Kjeldahl secara titrasi, Total Bakteri (TB) diukur menggunakan Metode Total Plate Count (TPC) dengan tekhnik spread plate. COD air diukur menggunakan metode titrimetri berbasis permanganat, sedangkan DO diukur menggunakan Metode Winkler. PH air diukur menggunakan pH meter, dan suhu diukur menggunakan termometer. Hasil penelitian menunjukkan bahwa rata-rata Karbon Organik (OC) dalam sedimen adalah 20,2%, Total Nitrogen (TN) 1,0%, dan Total Bakteri (TB) 15 × 106 CFU/gram. Nilai rasio C/N pada sedimen didapatkan sebesar 22. Rata-rata COD air adalah 18,3 mg / L, DO adalah 7,4 mg / L, pH 6,8, dan suhu 30,2oC. Hasil ini menunjukkan bahwa dekomposisi bahan organik dalam sedimen tambak udang Vannamei di desa Musi dalam kondisi seimbang.
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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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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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.
Co-Authors Ahmad Fauzi Angel Maria Arief Atanasius Jenarut Ayu Padma Sari Bachori Dhian Pratama Cintya Kriss Jayanthi Desak Putu Permathasari Dewa Gde Tri Bodhi Saputra Elok Faiqoh Endang Wulandari Suryaningtyas Gde Raka Angga Kartika Ghina Nafis Rahmatullah Hanif Abdullah I Gusti Agung Bagus Arya Pradnya Pratama I Made Sara Wijana I Made Suma Krisna Sravishta I Putu Yoga Pramana Putra 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 Ribka Evanzelina Laia Roni Adi Samba S.A NYOMAN PUTRI TRIANTINI Sang Ayu Indah Sukma Dewi Suryaningtyas, Endang Wulandari Yufinta Cahya Permanti Yusli Wardiatno