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INDONESIA
Current Trends in Aquatic Science
Published by Universitas Udayana
ISSN : 26217368     EISSN : 26217473     DOI : -
Core Subject : Education,
Other
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 7 No 1 (2024)" : 10 Documents clear
Teknik Budidaya Lele Dumbo (Clarias gariepinus) dengan Sistem Booster Putri Nurhanida Rizky; Daniel Bona Simamora; Moh. Zainal Arifin; Nazran Nazran
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Booster system fish farming has been widely used by cultivators since 2014. Booster system farming is a way of cultivating fish by emphasizing water, feed and health management applications to reduce the risk of crop failure. This study aimed to examine the production performance and cultivation techniques of African catfish with a booster system on an industrial scale, without experimental design. Feed management in this cultivation system is carried out by adding grotop boosters, aquavita premix boosters and progol boosters in 1 kg of feed. The average weight of African catfish when stocking was 6.03 ± 0.06 g/fish with a density of 2,025 in 4 concrete pond units. This studies showed after 77 days of culture, the highest fish weight gain was in pond T4 of 80.17 ± 0.56 g/fish, followed by T2 of 79.94 ± 0.97 gr/fish, T1 of 78.92 ± 0 .91 gr/fish, and T3 of 78.27 ± 0.33 gr/fish. The survival rate in this study was also high where the survival rate was >90% with an FCR value of 1.2.
Pola Pertumbuhan Rumput Laut pada Lokasi Tanam yang Berbeda di Perairan Pantai Pandawa, Bali Bona Rizky Simanungkalit; Pande Gde Sasmita Julyantoro; Ayu Putu Wiweka Krisna Dewi
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Seaweed cultivation is one of the leading commodities in the fishing sector and is still occupied by most coastal communities. One of the types of seaweed that can be cultivated is Eucheuma cottonii. One of the areas in Badung Regency that was once a place for seaweed cultivation is the South Kuta District, Badung Regency, Pandawa Beach, to be exact. The problem most often faced by seaweed cultivators is that seaweed cannot grow properly. The cause of seaweed not being able to grow properly occurs due to predators eating the seaweed thallus. Therefore, a study was conducted to determine the appropriate location on the Pandawa Beach for the cultivation of seaweed Eucheuma cottonii. The research method was carried out by planting Eucheuma cottonii seaweed in 3 different locations seen from the distance from the tourism position (water sport) in the waters of Pandawa Beach, first location in the water sport area, second location is 100 m to the west of the one location, third location is 100 m to the west of two location. The results of this study indicate that the average weight of seaweed at location 1 in the first to sixth week range 119,6 g – 399,7 g, location 2 range 121,80 g – 413,5 g, and at location 3 it ranged 123,35 g – 430,75 g. The Growth Rate (SGR) at Location 1 is 3,3%, Location 2 is 3,37%, and Location 3 is 3,47.%.
Pengukuran Kandungan Senyawa Polisiklik Aromatik Hidrokarbon (PAH) di Pesisir Perairan Celukanbawang, Bali Putra pratama; Ima Yudha Perwira; Alfi Hermawati Waskita Sari
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

This study aims to determine the content of Polycyclic Aromatic Hydrocarbons (PAH) in seawater in Celukanbawang waters, Bali. Industrial activities that take place in Celukanbawang waters can affect the quality of the water and marine life around it, and can even have an impact on the environmental pollution of the waters. Data collection was carried out in February-March 2020. The method used in this research is descriptive method, with the seawater sampling method carried out randomly (random sampling) with the number of stations studied as many as 6 stations with a distance of 100 meters from the shoreline. This study also measured DO levels, temperature, pH, and salinity which were carried out directly at the research location and at the Fisheries Science Laboratory, Faculty of Marine Affairs and Fisheries, Udayana University. The results showed that the average value of Polycyclic Aromatic Hydrocarbons (PAH) from the six stations was 0.021 (mg / L). This shows that the levels of Polycyclic Aromatic Hydrocarbons (PAH) in Celukanbawang waters have exceeded the quality standard threshold in accordance with the Regulation of the Governor of Bali No. 16/2016.
Konsentrasi Logam Berat Timbal (Pb) dan Kadmium (Cd) di Perairan Pelabuhan Benoa Denpasar Doni Samuel Barus; Pande Gde Sasmita Julyantoro; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Benoa Port is one of the public ports as well as a special export fishing port. The existence of transportation activities at Benoa Port is indicated to have an indirect pollution impact on the waters, so that research related to the heavy metal content of lead (Pb) and cadmium (Cd) in water and water quality conditions in the waters of Benoa Port Denpasar is important to do. Water sampling was carried out at Benoa Port, then the samples were analyzed at the Analytical Laboratory of Udayana University from June-July 2023.The tested water samples were taken from 3 points with 3 repetitions at each point. Point 1 is at the port entrance, point 2 is at the port of the fishing town and point 3 is at RTH Taman Segara. Data from the study was obtained that the highest Pb value was at point 2, which was 0.1 mg/l and the Cd value was 0.054 mg/l. At point 3 the Pb value is 0.025 mg/l and the Cd value is 0.018 mg/l, and the lowest is found at point 1 with a Pb value of 0.02 mg/l and a Cd value of 0.016 mg/l. Water quality parameters measured include temperature, pH, Dissolved Oxygen (DO), and Total Dissolve Solids (TDS). The highest temperature value is found at point 2 of 29.8oC while the lowest temperature value is found at point 1 with a value of 28.6oC.
Kajian Aspek Reproduksi Ikan Famili Cichlidae di Danau Batur, Bali Ni Ayu Ajeng Meirina Sukmayanti; Nyoman Dati Pertami; Devi Ulinuha
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Studies on the reproductive aspects of fish of the Cichlidae family in Lake Batur have never been carried out. This study aims to determine the reproductive aspects of fish of the Cichlidae family in Lake Batur. Sampling was carried out from November to December 2021. Laboratory analysis was carried out from October to December 2022. This research used descriptive and quantitative methods. Sampling using purposive sampling method at three points. The fishing gear used is gill nets with a size of 0.5; 1.0; 1.5; 2.0; 2.5; and 3.0 cm and bubu. The gill nets and traps were installed in the afternoon (16.00 WITA) and removed the next day (07.00) WITA. Samples found during data collection consisted of 222 individuals including four species, namely: midas cichlid (Amphilophus citrinellus), three spot cichlid (Amphilophus sp.), mozambique tilapia (Oreochromis niloticus), and nile tilapia (Oreochromis mossambicus). The level of gonadal maturity (TKG) of the four species is varied (I-V) each month, with the average gonadal maturity index (IKG) for female Cichlidae family fish being higher than males and the peak spawning time occurring in November and December (rainy season). The sex ratio of fish in the Cichlidae family of the four species was only midas cichlid (Amphilophus citrinellus) found in an unbalanced condition and nile tilapia (Oreochromis niloticus) in a balanced condition. As for the species of three spot cichlid (Amphilophus sp.) and mozambique tilapia (Oreochromis mossambicus) in December and November were not analyzed because the female sex was not found.
Kemampuan Akumulasi Kromium pada Insang Ikan Nila Siti Rizki Annafia; Devi Ulinuha; Alfi Hermawati Waskita Sari
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Contamination of Heavy metal has a crucial issue not only in Indonsia but also in Global where are contamination of heavy metals can cause pollution in waters which has adversely affects not only to water quality but also affects to aquatic organism life. One of the dangerous heavy metals was found in the waters is chromium (Cr). Chromium contamination in the waters can caused by industrial waste like : tanning leather, paint mixture, etc. Tilapia is an economic fish in that has ability to accumulate heavy metals. This aim of this study is to determine the ability of Cr heavy metal accumulation in gills. Experimental research was conducted on tilapia measuring 10-13 cm by giving Cr exposure at different concentrations (0 ppm, 30 ppm and 60 ppm) for 96 hours. Measurement of Cr content in gill organs was read by using an Atomic Absorption Spectrophotometer (AAS) at the integrated laboratory of the faculty of Mathematics and Natural Sciences, Udayana Univesity. The results obtained from this study indicated that there were differences in gill accumulation with Cr exposure 30 ppm and 60 ppm of Cr. The highest Cr accumulation of Cr in the gill organs with exposure by Cr 60 ppm (13,491 ppm) and 6,515 ppm at exposure to Cr 30 ppm.
Profil Bahan Organik Pada Air di Bagian Hilir Sungai Jangga, Kabupaten Karangasem, Bali. I Gede Duta Sunaryuga; Ima Yudha Perwira; I Ketut Wija Negara
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Jangga river is one of the major rivers that pass through Karangasem Regency. The Jangga river flows from the Padangkerta Village (upstream), the Subagan Village and ends in the Tumbu Village at the downstream. Organic matter has an important role for the productivity of water ecosystems. The accumulation of organic matter in the mouth of the river can threaten the ecological system and reduce the quality of the river waters. This study aims to determine the level of pollution and water quality in the Jangga River, Karangasem, Bali. The method used in this study is a quantitative descriptive method. Parameters measured were BOT, ammonia, TSS, TDS, DO, pH, temperature and turbidity. The results showed that the condition of the waters in the Jangga River in general is still classified as unpolluted according to Government Regulation Number 22 of 2021, concerning the implementation of environmental protection and management.
Indeks Kesesuaian Wisata Mangrove di Kawasan Wisata Mangrove Desa Jungutbatu, Nusa Lembongan Bali Gusti Ngurah Agung Putra Kusuma; Ni Luh Watiniasih; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Desa Jungutbatu, Nusa Lembongan merupakan salah satu desa di Kabupaten Klungkung yang memanfaatkan kawasan mangrove sebagai lokasi ekowisata. Hutan mangrove Nusa Lembongan dengan luas areal hutan 202 Ha, seluas 85 Ha adalah merupakan hasil penanaman pada areal kosong di daerah Jungutbatu dan seluas 117 Ha adalah merupakan hutan alami. Ekowisata pada hutan mangrove bisa menjadi kebijakan yang tepat untuk mencapai pengelolaan berkelanjutan, melalui penerapan kesesuaian peruntukan ruang dan prinsip konservasi ekosistem secara nyata. Data tambahan yang dapat diamati berupa, identifikasi mangrove dan fauna yang ditemukan di Desa Jungutbatu. Maka oleh sebab itu dilakukan penelitian mengenai indeks kesesuaian wisata mangrove di kawasan mangrove Desa Jungutbatu, Nusa Lembongan guna mengetahui kesesuiaan ekosistem mangrove dan strategi pengelolaan ekosistem di Kawasan mangrove agar menuju pengelolaan yang lebih baik. Penelitian ini dilakukan pada Bulan Mei hingga Juni 2023 di Kawasan Ekowisata Mangrove Desa Jungutbatu, Nusa Lembongan, Kabupatan Klungkung. Data mengenai indek kesesuaian wisata mangrove di Desa Jungutbatu, Nusa Lembongan dilakukan dengan Analisis Indeks Kesesuian Wisata. Hasil penelitian menujukan bahwa ketebalan mangrove pada stasiun I sebesar 558 m dan stasiun II sebesar 470 m. Terdapat 5 jenis mangrove yang ditemukan yaitu Bruguiera gymnorhiza, Rhizophora apiculate, Rhizophora stylosa, Rhizophora mucronate dan Sonneratia alba, serta lima jenis objek biota yang ditemukan, yaitu Mollusca,reptil, ikan, crustacea, dan burung. Nilai indeks kesesuaian wisata (IKW) dalam penelitian ini adalah sebesar 2,48% pada stasiun I, sedangkan pada stasiun II mendapatkan nilai 2,1%. Nilai IKW pada semua stasiun pengamatan termasuk ke dalam kategori S2 atau sesuai untuk dijadikan sebagai objek ekowisata mangrove.
Persebaran Ikan di Kawasan Tahura Ngurah Rai, Bali Ni Putu Astri Kamajayanti; Nyoman Dati Pertami; Devi Ulinuha; Putu Satya Pratama
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The diversity of fish species in aquatic estuarine is influenced by the distribution of fish. The pattern distribution of fish in the Ngurah Rai forest park area has never been done, therefore this research was conducted from July to December 2022 to determine distribution of fish which is expected to be used as initial information on ecosystem conditions in the Ngurah Rai forest park area. Fish sampling were carried out every month. The sampling method was carried out using experimental gill nets and traps twice in the morning (tide) and during the day (ebb). The results showed that the total number of fish found around the Ngurah Rai forest park area was 478 individuals with 12 orders, 17 families, and 23 fish species. The most common fish species found in July is Ambasis macracanthus (Seriding). Furthermore, sequentially the fish species are Fibramia lateralis (Serinding), Aurigequula fasciata (Cotek), Ophiocara ophicephalus (Bedul), and Plotosus canius (Nine). Specifically in November, no dominant species was found.
Pengaruh padat tebar berbeda terhadap pertumbuhan, kelangsungan hidup, dan efisiensi pakan juvenil udang vaname (Litopenaeus vannamei) Kadek Bayu Candra Gotama; Pande Gde Sasmita Julyantoro; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 7 No 1 (2024)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Vaname shrimp (Litopenaeus vannamei) has advantages, such as being more responsive to feed, resistant to diseases and poor environmental conditions, fast growth, high survival rate, and high stocking density. This study aims to examine the effects of different stocking densities on the growth, survival rate, and feed efficiency of vaname shrimp. Vaname shrimp (±0.6 g/shrimp). were stocked in fiber tanks with a volume of 500 liters and filled with seawater with a salinity of 35 ppt. This study used an experimental method with 3 different stocking density treatments: 200 individual/m3 (A), 400 individual/m3 (B), and 600 individual/m3 (C), repeated three times per treatment. The shrimps were cultivated for 60 days and fed at a rate of 5% of their body weight/day four times a day. The results showed that average growth shrimp in treatment A, B, and C were 12.10 g, 10.14 g, and 7.37 g, respectively. The survival rate of shrimp in the treatmen A. B, and C were: 72%, 46,3%, and 56%, respectively. The FCR in the treatment A, B, and C were 0.95; 1.4; and 1.26. One Way ANOVA statistical analysis indicated significant differences (P<0,05) between treatments A dan C in terms of mean body weight growth, as well as between treatments A and B in terms of FCR. This study indicated that different stocking densities affect the growth, survival rates, feed efficiency, and water quality of vaname shrimp.

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