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Akumulasi Logam Berat Seng (Zn) pada Akar dan Daun Lamun Enhalus acoroides di Perairan Pantai Sanur, Bali I Komang Yopi Trio Santana; Pande Gde Sasmita Julyantoro; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Penelitian ini bertujuan untuk mengetahui konsentrasi logam berat Zn pada sedimen, akar dan daun lamun Enhalus acoroides serta kemampuannya dalam mengakumulasi dan mentranslokasi logam berat di kawasan perairan Pantai Sanur yang dilaksanakan pada bulan Pebruari 2018. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dengan stasiun pengambilan sampel ditentukan dengan menggunakan metode purposive sampling yang dilakukan pada 3 stasiun. Sampling dalam penelitian ini meliputi sampling kualitas air, pengambilan sampel sedimen, akar dan daun lamun Enhalus acoroides. Pengukuran data kualitas air dilakukan secara insitu sedangkan analisis sampel dilakukan di UPT. Laboratorium Analitik Universitas Udayana dengan menggunakan ICPE-9000. Hasil penelitian menunjukan bahwa kondisi kualitas perairan Pantai Sanur secara umum masih mampu menunjang kehidupan lamun Enhalus acoroides sesuai dengan Pergub Bali No. 16 Tahun 2016 tentang baku mutu lingkungan hidup dan kriteria baku kerusakan lingkungan hidup. Rata-rata kandungan logam berat Zn di akar tertingggi pada stasiun 3 yaitu sebesar 7,09 mg/kg dan terendah pada stasiun 1 sebesar 5,84 mg/kg. Rata-rata kandungan logam berat Zn di daun tertingggi pada stasiun 2 yaitu sebesar 9,07 mg/kg dan terendah pada stasiun 3 yaitu sebesar 7,50 mg/kg. Sedangkan pada sedimen, kandungan logam berat Zn tertinggi pada stasiun 2 dengan nilai 12,27 mg/kg dan terendah pada stasiun 3 dengan nilai 9,47mg/kg. Nilai faktor biokonsentrasi (BCF) menunjukan bahwa daun dan akar lamun Enhalus acoroides dapat mengakumulasi logam berat Zn sebesar 0,78 dan 0,61. Hasil perhitungan translokasi faktor (TF) sebesar 1,28 menunjukan lamun Enhalus acoroides termasuk kategori fitoekstraksi (>1).

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

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.

Keanekaragaman dan Kelimpahan Tumbuhan Air di Subak Pulagan, Tampaksiring, Gianyar, Bali Ni Putu Bella Yuliana Dewi; I Wayan Arthana; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

This study aimed to determine the diversity, abundance and dominance of aquatic plants, relation to water quality to aquatic plants, and the relation of aquatic biota to aquatic plants. This research used observation and purposive method. The highest abundance value of aquatic plants found in station 1 (upper area) of 4034 ind/m2 with the type of aquatic plant was (Salvinia molesta). The index value of diversity ranged from 0,6628-0,8985, with the highest index found in station 2 (middle) of 0,8985. The dominance index value ranged from 0,4537-0,6127, with the highest dominant index found in station 3 (lower area) with species dominated by (Pistia stratiotes). The relation of aquatic plants with temperature showed correlation value of r = -0,9967 (very strong). The relation with other water quality parameter to aquatic plants showed correlation value which were with pH of r = 0,8263 (very strong), with DO of r = -0,7651 (strong), with nitrate of r = -0,8457 (very strong), and with phosphate of r = 0,7092 (strong). Correlation between abundance of biota Aplocheilus panchax to diversity, abundance, and dominance of aquatic plants showed the highest correlation value respectively of r = 0,6344 (station 1), r = 0,9987 (station 1), and r = -0,5688 (station 3).

Kajian Kelimpahan Mikroplastik di Perairan Teluk Benoa Provinsi Bali Dimas Hafidh Nugroho; I Wayan Restu; Ni Made Ernawati
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Benoa Bay is one of the water areas with a fairly complex activity, ranging from benoa port activities, watersports tours, as well as activities from residential areas. The activity is thought to contribute to the pollution of marine debris on the bay of Benoa. The purpose of this study is to determine the type and abundance of microplastic contained in the waters of Benoa Bay, Bali. This study was conducted from March to May 2018. Microplastic sampling in water using 200 µm plankton net which was withdrawn for 10 minutes. Method microplastic sampling in sediments using a shovel. The results showed that there are 3 types of microplastic found in water and sediment of Benoa Bay waters are fragment, film, and fiber. The highest microplastic type in the waters comes from the type of fragment with an abundance of 0.26 particles / m³ found at station 3. The highest total microplastic abundance in the waters is present at station 3 with an abundance of 0.58 particles / m³. The highest microplastic type in the sediment comes from the type of fragment with an abundance of 57 particles / kg found at station 1. The highest total microplastic in the sediment abundance is present at station 1 with an abundance of 114 particles / kg.

Uji Tantang Bakteri Vibrio harveyi Pada Pasca Larva Udang Vaname (Litopenaeus vannamei) Ni Putu Tika Lestari; Pande Gde Sasmita Julyantoro; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

This research aims to determine the survival of Litopenaeus vannamei post larvae when challenged with various density of pathogenic Vibrio harveyi. The L. vannamei post larvae used in this study was obtained from Vannamei Broodstock Center BPIUUK, Karangasem Bali. This research was conducted for two months, from April to May 2018 in fishery laboratory, Faculty of Marine Science and Fisheries, Udayana University by using complete randomized experimental design with four different V. harveyi density and three times repetitions. The study showed that the higher density of pathogenic V. harveyi resulted on the lower survival of L. vannamei post larvae. The highest density of V. harveyi 107 CFU/mL in treatment D resulted on 53±5.77% post larvae survival, while treatment A as control without addition of V. harveyi was still has survival of 100±0.00% at the end of experiment. The density 105 CFU/mL of V. harveyi (Treatment B) seems able to be tolerated by L. vannamei post larvae since the shrimp was still have high survival at this V. harveyi density. Further both V. harveyi density of 106 CFU/mL and 107 CFU/mL were not able to tolerated by the shrimp post larvae and lead to the high shrimp mortality. Although affected on shrimp survival, addition of V. harveyi have no significant effect to the weight of shrimp post larvae between treatments.

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.

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Contact Name
-

Contact Email
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Journal Mail Official
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-

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Kota denpasar,

Bali

INDONESIA