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All Journal METAMORFOSA Journal of Biological Sciences Journal of Marine and Aquatic Sciences Buletin Udayana Mengabdi Bumi Lestari Ecotrophic, Journal of Environmental Science JURNAL ENGGANO Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Current Trends in Aquatic Science Advances in Tropical Biodiversity and Environmental Sciences AT-TAKLIM: Jurnal Pendidikan Multidisiplin
I Wayan Restu
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 Education Energy Environmental Science Immunology & microbiology Veterinary Other

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Journal : Current Trends in Aquatic Science

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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.
Kondisi Ekosistem Terumbu Karang di Bagian Barat Pulau Pasir Putih Desa Sumberkima, Kabupaten Buleleng, Provinsi Bali Gagah Gumelar Wicaksono; I Wayan Restu; Ni Made Ernawati
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 dilaksanakan pada bulan Januari 2018 di Pulau Pasir Putih Desa Sumberkima, Kabupaten Buleleng, Provinsi Bali. Penelitian ini bertujuan untuk mengamati dan menganalisis kondisi terumbu karang berdasarkan persentase tutupan dan nilai indeks keanekaragaman. Metode yang digunakan adalah metode survei dengan menggunakan transek garis menyinggung (LIT). Lokasi pengamatan terdiri dari 2 stasiun. Pengamatan di masingmasing stasiun dilakukan pada kedalaman 3 meter dan 7 meter. Tipe terumbu karang yang ada di Pulau Pasir Putih Desa Sumberkima, Kabupaten Buleleng, Provinsi Bali. Bentuk pertumbuhan terumbu karang yang dijumpai pada daerah penelitian adalah Acropora Branching (ACB), Acropora Encrusting (ACE), Acropora Submassive (ACS), Acropora Digitate (ACD), Acropora Tabulate (ACT), Coral Branching (CB), Coral Massive (CM), Coral Encrusting (CME), Coral Submassive (CS), Coral Foliose (CF), Coral Meliopora (CME), Coral Heliopora (CHL) dan Coral Mushroom (CMR). Kondisi terumbu karang di Pulau Pasir Putih tergolong dalam kategori sedang hingga baik. Persentase tutupan karang pada staiun 1 di kedalaman 3 m sebesar 72.84% (baik), dan di kedalaman 7 m sebesar 26.29% (sedang). Pada staiun 2 di kedalaman 3 meter memiliki nilai persentase tutupan karang sebesar 47.52% dan di kedalaman 7 meter sebesar 53.39% yang sama-sama dikategorikan tutupan karang sedang
Analisa Kelayakan Usaha Purse Seine pada KM Bintang Bahagia 6 di Pelabuhan Umum Benoa, Provinsi bali Maria Angelina Vicario Tonga; I Wayan Restu; I Ketut Wija Negara
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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This study objectives is to determine how the condition of the purse seine fishery business and also to determine the feasibility of the purse seine fisheries business in Benoa Public Port. In this study the method used is descriptive quantitative method. The data analysis method used is by calculating income, depreciation, and business profits, then to find out the business feasibility calculated the value of the payback period, B / C ratio, break event point. The primary data taken is data belonging to KM Bintang Bahagia 6 which is in the form of fish catch data per trip for 1 year, investment costs, fixed costs and variable costs, while secondary data is taken from the literature as well as data from the Directorate General of Marine Resources and Fisheries in the form of data on the number of purse seine fleets and the number of catches of purse seine vessels in Benoa Public Port. The condition of the fisheries business with purse seine fishing equipment in Benoa Public Port can be categorized as still quite good. This can be seen from the large number of operating fleets and the catches obtained are still relatively stable. The value of the payback period obtained is 1.1, B / C ratio 1.6, and BEP units of 99,433 kg and BEP sales of Rp 2,165,557,791. With this analysis, it can be stated that purse seine fisheries are feasible.
Strategi Pengelolaan Ekowisata Mangrove Berbasis Konservasi pada Objek Wisata Alam Trekking di Tahura Ngurah Rai, Bali Atsna Qi Doma T. Manihuruk; I Wayan Restu; I Wayan Darya Kartika
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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The aim of this research was to explain the legal aspects of trekking nature tourism object, to determined the zones of this place existence and to explain the strategies management of mangrove ecotourism in trekking nature tourism object. The methods of this research were using survey, purposive sampling and accidental sampling. The data were analized using a content analysis and SWOT analysis. The results indicates that the development of that place has already been legal as the tourist attraction. This statement is according to the decree of the Minister of Forest Number 544/Kpts-II/1993 on September 25, 1993. The development of this place is also on the right zone, the place is located in the utilization zone. And, this research resulted 6 strategies namely; improved the infrastructure and providing dustbins, toilet revitalitation and reconstruction the bridges, conduct waste management with an integrated system which is based on community management that involved people around the place, increasing the diversification of tourist attraction objects, increasing the promotion by joining the tourism developers. The last but not least, is about issuance of PERDA (Peraturan Daerah) to control and made an ideal price for tickets, and improved the human resource management.
Analisis Kesesuaian dan Daya Dukung Ekowisata Kategori Wisata Pantai di Pantai Pulau Merah Banyuwangi Fuad Hasin Ahmad; I Wayan Restu; Ni Putu Putri Wijayanti
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

The study aimed to determine the tourism suitability index and carrying capacity of Red Island Beach. The study was carried out using descriptive method. The study used purposive sampling to determine the tourism suitability index, while the data used for determination of tourism carying capacity was collected directly using QGIS software. The data was colledted from 3 stations along the Red Island Beach, and the distance of each station was 1000 m. The distance of sampling from the beach was 10 m, and performed in triplicate. Parameters measured in this study were: water depth, beach type, beach width, substrate type, water current, slope, water sharpness, land cover, dangerous biota, and freshwater availability. The results showed that the value of the tourism suitability index from 3 stations was categorized into S1 (Very Suitable) (IKW> 80%). The result indicates that the beach of Red Island Banyuwangi can support the development of recreational beach activities. As for the value of the support of the area divided into 2 categories, for the tourism category of recreational beaches obtained the value of carrying capacity of 1,500 people/day, swimming category obtained the value of the support of 240 people/day. It could be concluded that carrying capacity of Red Island Beach is categorized as under carrying capacity. The visitor should be increased up to 36% to reach a balance tourism visit.
Analysis Kesesuaian Pengembangan Wisata Bahari Berkelanjutan di Pantai Jemeluk, Amed, Kabupaten Karangasem, Bali Juliyah Emka; I Wayan Restu; Suprabadevi Ayumayasari Saraswati
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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The diversity of biodiversity in Jemeluk Beach did not guarantee that all marine tourism activities on Jemeluk Beach was not have damage or negative impact on the environment. This research was conducted to determine how the suitability of marine tourism conditions (snorkeling, diving, and beach recreation) in an effort to preserve sustainable marine tourism. This research used the analysis of tourism suitability by comparing the characteristics and quality of land against land use requirements for certain tourism activities. The method of measuring coral cover used the LIT (Line Intercept Transect) method which is based on the form of coral growth. Measurement of the type and number of reef fishes was assessed using the UVC (Underwater Visual Cencus) method by taking data along 50 meters at the same depth as the coral cover data collection. The suitability condition of snorkeling tourism at points I and II was classified as quite appropriate with a value of 78% and 72.23%, while point III was classified as conditionally appropriate with a value of 46.3%. The suitability of diving tourism at points I and II were classified as conditional according to the values of 44.5% and 38.2%, while point III was classified as incompatible with the value of 33.34%. While the results of the calculation of the suitability of the beach tourism index showed a very suitable category with a value of 90% to be used as an object of marine tourism development.
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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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.
Co-Authors Abd. Rahman As-syakur Abdul Razak Adhelia Fatimah Azzahra Alfi Hermawati Waskita Sari Anesa Ronavia Arip Arip Arisanti Dyah Puspitasari Atsna Qi Doma T. Manihuruk Bagus Sudananjaya Bastiar Nurdin Cintya Kriss Jayanthi Desak Made Goldyna Rarasari Desak Putu Permathasari Desak Wira Triana Wandari Dewa Ayu Angga Pebriani Dewangga Ari Kusuma Putra Diah Ayu Safitri Dimas Hafidh Nugroho Dita Dwi Ayu Isukadana Endang Wulandari Suryaningtyas Evrina Cahyani Sinaga Fuad Hasin Ahmad Gagah Gumelar Wicaksono Gde Raka Angga Kartika Gede Bayu Sulastika Hanif Abdullah I Gede Suyoga I Gede Wahyu Surya Wirawan I Gusti Agung Bagus Putra Adiguna I Ketut Wija Negara I Ketut Wija Negara I Ketut Wija Negara I Nyoman Sastra Adi Putra I Putu Anggra Weda I Wayan Arthana I Wayan Gde Samping Gargitha I Wayan Rian Riki Saputra Ida Ayu Novera Wandiani Ilmy Amalia Indah Eka Yulianti Indah Nurtira Irene Yolanda Br Ginting Jordan Alexander Anggiat Simanjuntak Juliyah Emka Kadek Ira Maresa Kartika, I Wayan Darya Ketut Tika Suariningsih Kindy Nurrani Annisa Komang Kerta Sanjaya Lingga Nurmalasari Made Ayu Pratiwi Made Ayu Pratiwi Made Octiya Arimardewi Mahfud Samdani Maria Angelina Vicario Tonga Mawardi Labbaik Mu'tasim Billah Muhammad Alfiansyah Mahmud Muhammad Rizky Asvin Muhammad Sulthon Subekhi Ni Kadek Dwi Widyanti Putri Ni Komang Ayu Sukawati Ni Luh Intan Kartika Sari Ni Made Ernawati, Ni Made Ni Putu Diah Kusumawati Ni Putu Putri Wijayanti Ni Putu Suci Mardani nyoman anisa Pande Adhitya Prabhuwinata Pande Gde Sasmita Julyantoro Pande Kadek Ari Iswari Putu Roni Graha Persada Rani Ekawaty Ribka Evanzelina Laia Sherina Oktafianti Siti Zubaidah Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Wayan Putri Prakanti Karya Wenny Aberti Manurung Wisnu Kawirian Yessica Christin Yohana Christanti Ndale Yuli Ananda Yulihatul Meisaroh