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All Journal Journal of Marine and Aquatic Sciences Buletin Udayana Mengabdi Bumi Lestari Ecotrophic, Journal of Environmental Science JURNAL ENGGANO Current Trends in Aquatic Science Jurnal Manajemen Bisnis Era Digital AT-TAKLIM: Jurnal Pendidikan Multidisiplin Advances in Tropical Biodiversity and Environmental Sciences NETIZEN (JOURNAL OF SOCIETY AND BUSSINESS)

I Wayan Restu

Program Studi Manajemen Sumberdaya Perairan (Department Of Aquatic Resources Management) Universitas Udayana

Author-ID : 2950437

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary Other

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Struktur Komunitas Ikan Di Muara Sungai Badung Kawasan Mangrove Taman Hutan Raya (Tahura) Ngurah Rai, Bali I Gusti Agung Bagus Putra Adiguna; I Wayan Restu; Rani Ekawaty
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Muara Sungai Badung merupakan habitat dari berbagai macam kehidupan akuatik terutama ikan, dimana kondisi kualitas air sangat berpengaruh terhadap pola persebaran, keanekaragaman, kelimpahan serta kerapatannya. Ekosistem perairan muara Sungai Badung di kawasan mangrove Taman Hutan Raya (TAHURA) Ngurah Rai, Bali banyak mendapatkan tekananan ekologis dari berbagai aktivitas manusia seperti limbah – limbah yang diduga berdampak penting pada komunitas ikan (sumberdaya perikanan). Tujuan dilakukannya penelitian ini untuk mengetahui struktur komunitas dan kondisi lingkungan perairan di muara Sungai Badung. Penelitian dilakukan pada bulan Februari – Maret 2018 dengan 3 kali pengulangan pada 6 stasiun. Pengambilan sampel ikan menggunakan alat tangkap berupa jaring (gill net) dengan mesh size 1 inchi dan jala lempar. Diperoleh ikan di muara Sungai Badung yang terdiri dari 7 ordo, 14 famili, dan 14 spesies. Stasiun III mempunyai kelimpahan ikan tertinggi diantara stasiun lainnya yaitu 0,142 ind/m2 dengan komposisi ikan terbanyak diantara stasiun lainnya yaitu sebanyak 8 spesies, kelimpahan ikan terendah terdapat pada stasiun II yaitu 0,055 ind/m2 dengan komposisi ikan sebanyak 4 spesies. Komposisi ikan keseluruhan tertinggi yang didapatkan di muara Sungai Badung yaitu Mystus gulio sebanyak 18,56% dengan kelimpahan tertinggi sebesar 0,082 ind/m2, sedangkan ikan dengan komposisi keseluruhan yang rendah yaitu Pomadasys argenteus 1,14% dengan kelimpahan terendah sebesar 0,005 ind/m2 pada stasiun VI. Indeks keanekaragaman tertinggi terdapat pada stasiun III yaitu 1,96 dan yang terendah terdapat pada stasiun I sebesar 0,93. Indeks keseragaman tertinggi terdapat pada stasiun III sebesar 0,74 dan yang terendah terdapat di stasiun I sebesar 0,35. Indeks dominansi tertinggi terdapat pada stasiun I sebesar 0,40 dan yang terendah terdapat di stasiun III dengan nilai 0,16. Kata Kunci: Ikan; Muara; Struktur Komunitas; Sungai Badung; Mangrove

Laju Pertumbuhan Ikan Nila (Oreochromis niloticus) pada Tiga Sistem Resirkulasi yang Berbeda Yessica Christin; I Wayan Restu; Gde Raka Angga 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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Recirculation aquaculture system can be used to maintain the water quality during fish maintenance. This research aimed to determine the growth rate and survival rate of Tilapia (Oreochromis niloticus) by used three different recirculation system. The treatments are recirculation without filter (control), a biofilter system (bioball) and aquaponic systems (using water spinach and caisim). During eight weeks, the resulted of research showed the highest growth rate of Tilapia (Oreochromis niloticus) in biofilter treatment amounted for 4.58%/day followed by the control treatment for 4.09%/day and the lowest in aquaponic treatment for 3,81%/day. The best survival rate of Tilapia (Oreochromis niloticus) during the research contained in aquaponic treatment followed by biofilter treatment and the lowest value was in control treatment. During the research, of aquaponic treatment gave survival rate for 78.7%, biofilters 74.8% and control treatment for 63.5%. There were no significant differences (P > 0,05), between parameters for growth while survivl rate was significant (P < 0.05). The parameters of water quality include temperature, potential hidrogen (pH), dissolved oxygen (DO) and total dissolved solids (TDS). The quality range of water in all treatments generally described that the range were still running in tolerance for growth and survival rate of Tilapia.

Prevalensi dan Intensitas Ektoparasit Ikan Bawal Air Tawar (Colossoma macropomum) pada Usaha Perikanan Rakyat (UPR) di Desa Sepanjang, Kecamatan Glenmore, Banyuwangi Indah Eka Yulianti; I Wayan Restu; Alfi Hermawati Waskita Sari
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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Freshwater Bawal fish (Colossoma macropomum) is one of the important fish species in freshwater cultivation activities. One of the qualities of good fish must be avoided from disease. Ectoparasites are parasites that attack the outside of the fish's body. This study aimed to determine the type, prevalence and intensity of freshwater Bawal fish ectoparasites (Colossoma macropomum) at UPR in Sepanjang village, Glenmore, Banyuwangi. Sampling of freshwater Bawal fish was taken using a purposive sampling method. The sample used was small fish (7.3-9 cm with a weight of 9.62 grams) and large fish (22.5-30.3 cm with a weight of 305.03 grams). 30 fish each. The data obtained were analyzed descriptively. The type of ectoparasites that infect small-sized freshwater Bawal fish include Trichodina sp. with a prevalence of 60% and intensity of 25 ind/fish, Ichthyophthirius multifiliis with a prevalence of 70% and intensity of 96 ind/fish, Dactylogyrus sp. with a prevalence of 100% and intensity of 23 ind/fish, and Gyrodactylus sp. with a prevalence of 23% and intensity of 2 ind/fish, whereas in large freshwater Bawal fish found ectoparasites such as Trichodina sp. with a prevalence of 10% and intensity of 2 ind/fish, Ichthyophthirius multifiliis with a prevalence of 90% and intensity of 66 ind/fish, Dactylogyrus sp. with a prevalence of 100% and intensity of 345 ind/fish, Gyrodactylus sp. with a prevalence of 23% and intensity of 11 ind/fish and the prevalence of Copepod 13% with an intensity of 1 ind/fish.

Indeks Kesesuaian Wisata Bahari Kategori Rekreasi Pantai di Pantai Balangan, Kabupaten Badung, Bali Sherina Oktafianti; I Wayan Darya Kartika; I Wayan Restu
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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This research was conducted to determine the suitability of marine tourism conditions for the beach recreation category to preserve sustainable marine tourism. The IKW data collection used the purposive sampling method. This research was divided into 3 observation stations with a sampling distance of 10 m from the shoreline to the sea. Determination of the marine tourism suitability index of beach recreation used the suitability matrix analysis by considering 10 parameters such as water depth, water brightness, beach type, beach width, beach slope, current velocity, water bottom material, coastal land cover, hazardous biota, freshwater availability. Water brightness, current velocity, beach widh, water depth and hazardous biota parameters data collection is carried out with 3 repetitions, whereas the other parameters are carried out without repetition. The parameter conditions for the IKW for beach recreation at Balangan beach had a white sand type of beach, beach width 28 m, the water bottom material is sand, water depth 0,66 m, water brightness 73%, current velocity 29 cm/s, beach slope 7,9°, coastal land cover is an open field, without hazardous biota, and freshwater availability 0,075 km. The results were obtained from the calculation of the IKW for beach recreation tourism at station I with a value of 2,92, station II 2,80, and station III 2,92. The result showed that all 3 stations were categorized as a very suitable category which indicates that Balangan Beach is very suitable as a beach recreation tourism object and can be further developed in its management.

Analisa Usaha Penangkapan Ikan dengan Longline pada KM. Hiroyoshi 6 Milik PT. Intimas Surya di Benoa, Bali Diah Ayu Safitri; I Wayan Restu; I Ketut Wija Negara
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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This study objectives is to analyze longline fisheries business, by analyzing business feasibility aspects and operational costs and business income. The method used is descriptive quantitative, and determining respondent by purposive sampling. The data collection process is carried out for 3 months. MS. Hiroyoshi 6 which is based in Benoa Harbor which is a wooden ship measuring 120 GT, with longline fishing gear. In one year the ship can make 6 trips. The composition of the catch consists of 9 types of fish, which are dominated by tuna. The investment costs incurred are Rp. 2,750,000,000, and operating costs are Rp. 805,410,000 in one year. The average boat production yield is 73,407 kg, with revenues of Rp 4,157,275,000 and profits of Rp 1,559,465,000. The results of the business feasibility analysis, payback period 1.7, B / C ratio 1.6, and Break Even Point units of 25,000 kg and Break Even Point sales of Rp 1,415,852,000. Based on the results of the analysis, the longline fisheries business is feasible to continue.

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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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

Analisis Kelayakan Usaha Penangkapan Ikan Teri (Stolephorus sp.) Nelayan Tradisional di Desa Sanggalangit, Kecamatan Gerokgak, Kabupaten Buleleng, Provinsi Bali. Ni Kadek Dwi Widyanti Putri; I Wayan Restu; I Ketut Wija Negara; I Gede Wahyu Surya Wirawan
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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Sanggalangit is one of the villages in Gerokgak District, Buleleng Regency, Bali Province. This village located at the coastal area. The main catch of fishermen in there is anchovy (Stolephorus sp.). The feasibility analysis of anchovy fishing business by traditional fishermen in Sanggalangit aims to determine the condition of the fishing business and analyze the feasibility of anchovy fishing business in Sanggalangit. This research took place from December 2019 to January 2020. Primary data were obtained by interview and direct observation in the field. Sampling was done by purposive sampling for 30 times fish landing (30 trips). Based on the data obtained, the fishing business classified as small scale (traditional) with a profit sharing system. Profit sharing system were 50% for owner's fishermen and 50% for working fishermen. Investment costs incurred in the amount of Rp. 58,200,000. The fixed cost per trip is Rp. 70,529 and the average variable cost per trip is Rp. 425,708. Average revenue per trip Rp. 706,417 with a profit Rp. 210,179. The value of the Production BEP is 2,156 kg and the Sales BEP is Rp 37,275,815 in a year. Analysis of R /C Ratio obtained a value of 1.42 shows that the business is feasible to run and can provide benefits. Payback Period value 1.32 shows that the category of initial capital return is relatively fast.

Kandungan Logam Berat Timbal (Pb) dan Kadmium (Cd) Pada Badan Air dan Ikan di Perairan Teluk Benoa, Bali Ni Putu Suci Mardani; I Wayan Restu; Alfi Hermawati Waskita Sari
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Heavy metals going into the aquatic environment will have an impact on the quality of the aquatic environment and affect the life of the biota in it. This study objectives is to determine the content of heavy metals Pb and Cd in water as well as in the Mullet Fish (Mugil cephalus) and Orange Spotted Rabbit Fish (Siganus guttatus) caught in Benoa Bay. The study was conducted from February to April 2018. The results showed that the content of heavy metals Pb and Cd in the water in Benoa Bay had exceeded the quality standards of metals dissolved in water for marine biota listed on Pergub Bali No. 16 of 2016. The value of Pb heavy metals in Mullet Fish and Orange Spotted Rabbit Fish in some samples have exceeded the maximum limit of heavy metal contamination SNI 7387: 2009. Cd heavy metal in Mullet Fish and Orange Spotted Rabbit Fish have exceeded the maximum limit of Cd metal contamination in fish and the processed product of 0.1 mg / Kg. Bioconcentration factor of metal Pb in Mullet Fish is included in the category of low accumulative properties of Pb heavy metals. BCF value of metal Cd in Mullet Fish shows that Mullet Fish has moderate accumulative properties against heavy metal Cd. Orange Spotted Rabbit Fish belongs to low category of accumulative properties against heavy metals Pb and Cd.

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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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 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.

Co-Authors Abd. Rahman As-syakur Adhelia Fatimah Azzahra Alfi Hermawati Waskita Sari Andi Mannojengi Anesa Ronavia Anggita Nur Aguspriyani Anita Yolanda Purba Arip Arip Arisanti Dyah Puspitasari Atsna Qi Doma T. Manihuruk Bagus Sudananjaya Bagus Sudananjaya Bastiar Nurdin Cintya Kriss Jayanthi Desak Made Goldyna Rarasari Desak Wira Triana Wandari Dewa Ayu Angga Pebriani Dewangga Ari Kusuma Putra Diah Ayu Safitri 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 Nyoman Sudiarsa 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 Ageng Astika Made Ayu Pratiwi 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 Nico Mulia Subekti nyoman anisa Pande Adhitya Prabhuwinata Pande Gde Sasmita Julyantoro Pande Kadek Ari Iswari Putu Roni Graha Persada Raihan Sulaiman Payapo 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 Yessica Christin Yohana Christanti Ndale Yuli Ananda Yulihatul Meisaroh

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