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Laju Pertumbuhan Rotifera (Branchionus plicatilis) di Media Kultur Berdasarkan Jenis Pakan Kombinasi Reza Yunita Sari; Ni Luh Watiniasih; Suprabadevi Ayumayasari Saraswati
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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Availability of rotifera natural food needs to be increased in line with the increasing need for larvae feed in fish hatchery production activities. This study aims to analyze the effect of different feeds on the growth rate of rotifers (Branchionus plicatilis). This research was conducted in December 2018 to January 2019 at the Jepara Brackishwater Aquaculture Center. This study used a completely randomized design with 4 treatments and 3 repetitions, namely control (N. ocullata), treatment 1 (N. ocullata + bread yeast), treatment 2 (N. ocullata + scott emultion), treatment 3 (N. ocullata+ fish powder). The dosages of each feed were 170,000 cells / ind N. ocullata, 0.5 g / 106 rotifera bread yeast per day, 6 µg / ind scott emultion, and 0.3 g /106/ind fish powder. Feeding is done twice a day in the morning and evening. The test plankton used was 15 ind / ml Branchionus plicatilis. Rotifera culture was carried out for 6 days and the population of rotifers was observed every day before feeding. Analysis of water quality was also carried out including DO, salinity, pH, temperature, and ammonia. The rotifera growth rate is analyzed through the number of individuals produced during the culture period. The results showed that treatment 3 (N. ocullata + fish powder) was the best treatment. The results of the ANOVA test showed that different feeding variations for each treatment had a significant effect (P <0.05) on the rotifera growth rate.

Pengaruh Kadar Protein Pakan yang Berbeda terhadap Laju Pertumbuhan Juvenil Ikan Gurami (Osphronemus gouramy) pada Kolam Terpal Gede Bayu Sulastika; I Wayan Restu; Endang Wulandari Suryaningtyas
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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Penelitian ini bertujuan untuk mengetahui Pertumbuhan berat mutlak, laju pertumbuhan harian/Specific Growth Rate (SGR) juvenil ikan gurami, rasio konversi pakan/Feed Convertion Ratio (FCR) dan efisiensi pakan, serta tingkat kelangsungan hidup/Survival Rate (SR) juvenil ikan gurami yang diberi pakan komersil, pakan tepung ikan, dan campuran pakan tepung ikan dengan tepung kangkung. Metode yang digunakan dalam penelitian ini yaitu metode eksperimen dengan rancangan acak lengkap terdiri dari tiga perlakuan dan tiga kali ulangan, dan pengambilan sampel dengan teknik Simple Random Sampling. Perlakuan yang diterapkan dalam penelitian ini yaitu Perlakuan A adalah pakan komersil, perlakuan B adalah pakan buatan dengan formulasi pakan tepung ikan 50%, tepung jagung 20%, tepung kedelai 10%, dan minyak ikan 20%, terakhir perlakuan C adalah pakan buatan dengan formulasi tepung ikan 5%, tepung jagung 10%, tepung kedelai 5%, tepung kangkung 50%, dan minyak ikan 30%. Berdasarkan hasil penelitian selama 60 hari didapatkan nilai pertumbuhan berat mutlak tertinggi pada perlakuan C sebesar 0.86 gram, nilai laju pertumbuhan harian tertinggi yaitu pada perlakuan C sebesar 3.40%, nilai rasio konversi pakan terbaik pada perlakuan C sebesar 1 : 2.3, nilai efisiensi pakan terbaik pada perlakuan C sebesar 43.57%, dan nilai tingkat kelangsungan hidup tertinggi pada perlakuan C sebesar 79%.

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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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 Ukuran Lobster (Panulirus sp.) Hasil Tangkapan di Pantai Yeh Gangga Kabupaten Tabanan dan Pantai Canggu Kabupaten Badung Provinsi Bali Muhammad Rizky Asvin; I Wayan Restu; Rani Ekawaty
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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Lobster is one of the potential fisheries commodities and an important economic category for export. The research was conducted in December 2018 until January 2019 with objectives to determine the composition and range of sizes of lobster caught by the fishermen and the tools and methods used to catch lobsters on Canggu Beach and Yeh Gangga Beach. The method used for the data collection was survey and interview methods. Sampling was done for 2 months with 1 sampling each month. Samples were taken from the catch of the fishermen. Lobster samples were then identified by type and carapace length measurements, total length, and lobster weight. Data obtained from lobster composition were analyzed descriptively and displayed in graphs and tables, while analysis of lobster fishing methods was carried out descriptively by collecting data on types, quantities, and methods of operation of fishing gear. Results showed the composition of the types of lobsters caught on Canggu Beach were Panulirus penicillatus, P. homarus, P. versicolor, P. longipes, and P. ornatus. The catch in Canggu Beach was dominated by the type of P. homarus as much as 38% in the first data collection and as much as 39% in the second data collection. The composition of lobster catches on Yeh Gangga Beach, namely P. penicillatus, P. homarus, P. versicolor, P. longipes, and P. ornatus. The first data collection was dominated by the type of P. homarus as much as 36% and the second data collection was 46%. The caught lobster has an average carapace length below 8 cm and has a weight above the average, which was 200 grams. The type of fishing gear used to catch lobsters was a passive catch in the form of traps and nets.

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.

Identifikasi dan Potensi Hasil Tangkapan Pukat Cincin (Purse Seine) pada Kapal Supala Sari di Perairan Kabupaten Buleleng I Ketut Wija Negara; Dewa Ayu Angga Pebriani
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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The sustainable potential of fish capturing in Buleleng sea waters is 14.243,3 tons/year which consist of large-pelagic, small-pelagic, demersal, and other reef fish. This research was conducted to identify the catch of purse seine in Buleleng Regency, then found out the potential of capture fisheries resources. The location of this research was carried out around the waters of Buleleng Regency. It also involved fishing base of fishing fleet which is located at Fishing Base (PPI) of Sangsit. This research was conducted from May to August 2018. Fish identification resulted from purse seine during purse seine fishing gears are 8 species, namely Auxis thazard, Decapterus macarellus, Rastrelliger kanagurta, Caranx sexfasciatus, Elagatis bipinnulata, Canthidermis maculata, Kyphosus cinerasces dan Acanthocybium solandri. The composition and potential of the catch obtained during the purse Purse Seine is the most dominant are Auxis thazard and Decapterus macarellus. The total catch of Auxis thazard is 5.943 and Decapterus macarellus are 4.741 kg. The potential for fishing in the region of Buleleng Regency by using Purse Seine fishing gear is very large with the number of 10.903 kg in 5 times of operation.

Kelimpahan, Keanekaragaman, dan Pertumbuhan Alami Bintang Laut (Asteroidea) di Perairan Pantai Semawang dan Pantai Samuh, Bali Ni Wayan Ernawati; I Wayan Arthana; 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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Semawang beach and Samuh beach are located in the area of Sanur and ITDC Nusa Dua, Bali. This study aims to find out abundance, diversity, domination, natural growth of starfish, and to know the physical and chemical conditions of waters. The method used was descriptive quantitative method. The highest total abundance in sub station 1 was 0,0045 ind/m2 (Semawang beach), diversity index ranged from 0,86 to 1,06 and the dominance index ranged from 0,45 to 0,5. The highest total abundance in sub station 1 was 0,118 ind/m2 (Samuh beach), diversity index ranged from 1,32 to 1,92 and dominance index ranged from 0,21-0,4. The long range of arms (R), radius of disc (r), and weight (W) of the starfish found on Semawang beach and the Samuh beach was R: 5,9-13,6 cm, r: 0,9-7,8 cm, W: 15,6-1896,6 gr, and R: 3,6-11,6 cm, r: 0,5-7,9 cm, W: 6,3-1835,9 gr. The equation of arms length relation and weight and the relation of radius of disc and weight with the highest R2 value at Semawang Beach is found in the Pentaster obtusatus species W = 0,1738L2,8214 and 70% W = 11,9780L1,7876. The equation of arms length relation and weight and the relation of radius of disc and weight with the highest R2 value at Samuh beach is found in species Linckia guildingi W = 2,9166L0,6170 and W = 9,2138L0,5169. The measurement result water quality parameters in Semawang beach waters ranges from 29-30°C (temperature), 5,5-5,7mg/L (DO), 30,5-31,5 ppt (salinity), and 8,2-8,5 (pH), while in Samuh beach waters of ranges 28-28,5°C (temperature), 5,5 mg/L (DO), 30-30,8 ppt (salinity), and 7,7 (pH).

Fluktuasi Bahan Organik dan Residu Terlarut dalam Budidaya Ikan Koi di Tulungagung, Jawa Timur Ilham Misbakudin Al zamzami; Alfi Hermawati Waskita Sari; Ima Yudha Perwira
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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Water quality management is an important factor in the process of koi fish cultivation in the Minapolitan area, Tulungagung Regency. The purpose of this study was to observe the factual conditions of media water quality during maintenance using standard operational procedures in the water quality management process for koi fish maintenance media. This research was conducted on koi fish maintenance activities for 4 months. The maintenance process is carried out on 3 ponds with a total volume of 130,000 liters, and the amount of koi is 700 fish / pond. The process of feeding fish is done twice (morning and evening) with the amount of 3% of the weight of the fish. The composition of feed given during the maintenance process are: 38% protein, 5% fat, 3% fiber, 12% ash, and 11% moisture level. After measuring water quality, DO values ??did not differ greatly from 5.5 to 6.9 ppm. The range of EC values ??is 574-658 µS / cm, while the pH value is 7.7-8.9. The BOT values ??increase gradually with values ??of 2.6 ppm, 5.1 ppm, 12.7 ppm. The TDS value experienced an increase in the second month and tended to be stagnant at the 4th month with a value of 231 ppm, 287 ppm, 285 ppm. The data that has been collected is analyzed descriptively by comparing the increase in BOT and TDS lanes to see the water saturation limit, visualized in the form of line graphs.

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.

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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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

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Contact Name
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Contact Email
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Journal Mail Official
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Location
Kota denpasar,

Bali

INDONESIA