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Jurnal Ilmiah Samudra Akuatika
Published by Universitas Samudra
ISSN : 26215314     EISSN : 26146738     DOI : https://doi.org/10.33059/jisa
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Ilmiah Samudra Akuatika adalah terbitan ilmiah berkala, yang terbit dua kali setahun yakni edisi Januari-Juni dan Juli-Desember, Jurnal Ilmiah Samudra Akuatika dikelola oleh Program Studi Budidaya Perairan, Fakultas Pertanian, Universitas Samudra. Jurnal Ilmiah Samudra Akuatika mengangkat tema-tema yang meliputi akuakultur, manajemen sumberdaya perairan, pemanfaatan sumberdaya perikanan, teknologi hasil perikanan, manajemen sumber daya laut dan pantai, sosial ekonomi perikanan, ilmu kelautan, serta ilmu-ilmu perairan dan perikanan lainnya. Adapun reviewer pada Jurnal Samudra Akuatika merupakan ahli dan pakar dibidang Perikanan dan Kelautan dari beberapa Perguruan Tinggi dan Lembaga Penelitian terkemuka yang ada di Indonesia.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 99 Documents
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Implementation of Pretreatment in Lipid Extraction to Biodiesel Production from Nannochloropsis sp Cultivated in Vannamei Farming Wastewater Rusydi, Rachmawati; Alfaini, Momika; Ayuzar, Eva; Hartami, Prama; Salamah, Salamah; Muliani, Muliani; Khalil, Munawwar; Febri, Suri Purnama
Jurnal Ilmiah Samudra Akuatika Vol 8 No 1 (2024): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v8i1.10905

Abstract

Nannochloropsis sp. is the green colored microalgae with its round shape of cell. This microalgae has lipids of 28,7% by dry weight, especially unsaturated fatty acids which can be transesterified to produce methyl ester and be a potential as biodiesel feedstock. The content of biodiesel Nannochloropsis sp. reaches 80% of dry weight and has the sama characteristics as vegetable oil. In the lipid extraction process many problems were found, one of which was the cell wall of Nannochloropsis sp. which prevents the lipid from being extracted. This research was carried out on 10 December 2022-28 February 2023 at the Hatchery and Aquaculture Technology Laboratory aquaculture study program, faculty of agrigulture, Malikussaleh University, Chemical Technology Laboratory at Lhokseumawe State Polytechnic and at The Environmental Quality Testing Engineering Laboratory At Syiah Kuala University, Banda Aceh. This study used a laboratory experimental method using a Non-Factorial Completely Randomized Design (CRD) consisting of 4 treatments and 3 replications. Treatment A Control, treatment B Heating, treatment C Osmotic shock, and treatment D Homogenizer. Based on statistical analysis of the F test (ANOVA) showed that the percentage of lipid from the application of pretreatment gave significantly different resulst to the percentage of lipid from the application of pretreatment. The highest lipid was found in treatment B which was 21,14% and the lowest lipid was in treatment C which was 12,51%. The highest lipid producer from the application of pretreatment is using the heating method. Biodiesel is obtained through a tranesterification process using methanol as a solvent and KOH catalyst.
Analisys of Oxygen Consumption Rate in a Closed Transport System for Koi Fish (Cyprinus carpio) Anesthesia with Extracted Green Betel Leaves (Piper betle L) Manurung, Yeremias Person; Putriningtias, Andika; Haser, Teuku Fadlon
Jurnal Ilmiah Samudra Akuatika Vol 8 No 2 (2024): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v8i2.10907

Abstract

Koi fish are a type of carp that have very beautiful and tame ornaments. This fish is often considered a variant of the Goldfish, even though it is genetically different. Transporting live fish can be defined as an action of moving fish in a living state from one place to another, with measures taken to ensure the fish's survival remains high until they reach their destination. Closed transportation is carried out by means of transport that is not directly connected to the air, often done to maintain the rate of oxygen consumption. Plants called betel leaves serve as herbal medicines and anesthetics for various fish species, including koi fish. This study aims to determine the best dose of green betel leaf extract as an anesthetic for closed transport on the survival of koi fish fry transported for 8 hours, using different doses of 10ml/L, 20ml/L, 30ml/L, and 40ml/L with a Completely Randomized Design (CRD) method. The results of this study show survival rates at doses of 10ml/L 83%, 20ml/L 90%, 30ml/L 77%, and 40ml/L 60%. In addition to testing for survival during transport, this study also aims to measure the Oxygen Consumption Rate (OCR) of each treatment. The results of this study show the OCR test results: P1 0.036 mgO2/min, P2 0.027 mgO2/min, P3 0.025 mgO2/min, and P4 0.022 mgO2/min
Preserving Mangrove Forests as an Effort to Manage Disaster Risk in the Coastal Area of Pangandaran Regency Nuranisa, Nisa; Mulyanie, Erni
Jurnal Ilmiah Samudra Akuatika Vol 8 No 2 (2024): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v8i2.10932

Abstract

Preserving mangrove forests as a disaster risk management strategy in the coastal areas of Pangandaran Regency is related to Indonesia's geographic vulnerability to natural disasters which causes Pangandaran Regency to become one of the areas with high disaster risk, especially in coastal areas. This study emphasizes the importance of community involvement in disaster management through planting and preserving mangroves which function as a natural barrier against coastal erosion, tsunamis and other disasters. The method used is descriptive through literature studies and documentation studies to analyze the existing mangrove ecosystem and its role in reducing disaster risk. The results of this article study contain various mangrove conservation initiatives and their ecological benefits, such as stabilizing coastlines and increasing community resilience to disasters and preserving mangrove forests as a disaster management effort in the coastal areas of Pangandaran Regency. This article aims to provide information to the government and local communities about sustainable mangrove conservation and preservation efforts as a buffer for coastal areas in facing disaster risks.
The Effect of Injecting Ovaprim Hormones with Different Doses on the Reproductive Performance of Female Baung Fish (Hemibagrus nemurus) Lumbantobing, Owen Agustinus; Febri, Suri Purnama; Komariyah, Siti
Jurnal Ilmiah Samudra Akuatika Vol 8 No 2 (2024): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v8i2.10933

Abstract

Baung fish is one of the important food fish in Indonesia. Commercialization and intensive cultivation of this species is still limited, due to its inability to breed naturally in captivity, the provision of seeds for rearing mostly still relies on catches from nature. This research aims to determine the best dose of the ovaprim hormone for the development of reproductive performance of baung fish on the number of eggs from striping baung fish (THS), body weight gain and Somatic Ovi Index (IOS). Using 3 treatments and 3 repetitions, namely P1 ovaprim dose 0.4 ml/kg broodstock, P2 0.8 ml ovaprim dose/kg broodstock and P3 ovaprim dose 0.10 ml/kg broodstock. From the research results, it was found that the highest striping eggs were found in the P3 treatment with a total of 19321.90 eggs. Meanwhile, the lowest egg yield from striping was in treatment P2 with a total of 16,568.29 eggs. The increase in body weight in treatment P3 showed the highest results with an average amount of 21.66 grams, while the lowest test results were in treatment P1 with an average increase in body weight of 12.66 grams. The highest Somatic Ovi Index was P3, namely 7.58% and P1 was 7.11% as the lowest result in the Somatic Ovi Index test. In the P3 parent is a good dose to improve the reproductive performance of baung fish.
The Effect of Probiotic-7 Dosage in Rearing Media on Water Quality and Growth Performance of Milkfish Fingerlings (Chanos chanos) Wati, Ema; Febri, Suri Purnama; Putriningtias, Andika
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.11038

Abstract

Milkfish (Chanos chanos) is a species of high economic value and one of the primary commodities in aquaculture. This study aimed to evaluate the effect of different doses of Probiotic-7 applied to the rearing medium on water quality and the growth performance of milkfish fingerlings. The experiment was conducted using a Completely Randomized Design (CRD) with five treatments and three replicates: P1 (control, without Probiotic-7), P2 (1 mL/L), P3 (2 mL/L), P4 (3 mL/L), and P5 (4 mL/L). The best absolute length and weight growth were observed in treatment P3, with a weight gain of 3.83 g. Treatment P3 also exhibited the highest specific growth rate (SGR) of 5.1% and the most efficient feed conversion ratio (FCR) of 1.21. The highest survival rates were recorded in treatments P2 and P3, reaching 97.77%. Throughout the rearing period, water quality parameters remained within optimal ranges: salinity 26–29 ppt, temperature 29–30°C, pH 7.6–7.8, dissolved oxygen (DO) 7–7.8 mg/L, and ammonia 0.03–0.18 mg/L. These findings indicate that administering Probiotic-7 at a dose of 2 mL/L effectively enhances the growth and survival of milkfish fingerlings while maintaining water quality within suitable limits for cultivation.
Daya Dukung Tambak Udang Vaname (Litopenaeus vannamei) Berdasarkan Parameter Kualitas Air di Desa Purworejo, Kecamatan Pasir Sakti, Kabupaten Lampung Timur Alfionita, Wuni; Larasati, Ellen; Pradana, Hengki; Rahman, Agus Arif; Husna, Asmaul; Riandi, Muhammad; Razi, Nanda Muhammad
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.11345

Abstract

This study evaluates the carrying capacity of Litopenaeus vannamei ponds based on water quality parameters in Purworejo Village, East Lampung, Indonesia. Water samples were collected from five ponds over a 90-day culture period, measuring physicochemical parameters including temperature, pH, dissolved oxygen (DO), salinity, ammonia, nitrite, and hardness. Results showed temperature ranging from 28 to 31°C, pH 7.5 to 8.2, DO 6.8 mg/L, salinity 15–22 ppt, ammonia 0.02 to 0.07 mg/L, nitrite 0.05 to 0.12 mg/L, and hardness 1,200 to 2,300 mg/L. Most values were within the optimal ranges for vannamei shrimp culture according to FAO and national standards, although DO fluctuations and elevated nitrite levels may constrain stocking density. These findings indicate that the studied ponds remain suitable, with an estimated optimal carrying capacity of 80–100 shrimp/m². This study provides baseline data for water quality management and sustainable stocking strategies in vannamei shrimp aquaculture at Purworejo Village, Pasir Sakti Subdistrict, East Lampung District, East Lampung.
Utilization of Fermented Sawdust and Cocopeat as Substrate Media for Tubifex sp. Culture Febrian , Muhammad Rizki; Rusydi, Rachmawati; Salamah, Salamah; Muliani, Muliani; Ayuzar, Eva; Mahdaliana, Mahdaliana
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.12899

Abstract

Tubifex worms are freshwater oligochaetes characterized by their bright red color and high nutritional content, consisting of 57% protein, 13.3% fat, 2.04% crude fiber, and 3.6% ash. Their natural populations have declined due to water pollution from waste, which reduces water quality, thus necessitating cultivation efforts. This study aimed to evaluate the effect of fermented sawdust and cocopeat as culture substrates on the biomass, population, and growth rate of Tubifex worms. The experiment was conducted using a Completely Randomized Design (CRD) with a non-factorial model consisting of four treatments and three replications: A (control: 80% mud + 20% chicken manure), B (80% fermented sawdust + 20% chicken manure), C (80% fermented cocopeat + 20% chicken manure), and D (40% fermented sawdust + 40% fermented cocopeat + 20% chicken manure). Analysis of variance (ANOVA) showed that different substrate compositions had a significant effect on biomass, population peak, and growth rate. The best performance was observed in treatment B, which resulted in the highest biomass (13.32 g/container), the highest population peak (120,111 individuals/container on day 40), and the highest growth rate (3.09%). These results indicate that fermented sawdust supplemented with chicken manure is the most effective substrate for enhancing the growth and population of Tubifex worms.
Performa Pertumbuhan Nannochloropsis sp. pada Berbagai Media Limbah Akuakultur Sitepu, Sara Serina; Rosmaiti, Rosmaiti; Haser, Teuku Fadlon; Febri, Suri Purnama
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.11097

Abstract

Nannochloropsis sp. is a microalga widely used as natural feed, particularly for rotifers, Artemia, and the larvae of fish and shrimp. During cultivation, this microalga requires essential nutrients such as nitrate and phosphate to support photosynthesis and growth. Aquaculture pond wastewater often contains organic matter that can cause environmental pollution but may also serve as a potential nutrient source for microalgal culture. This study aimed to evaluate the growth performance of Nannochloropsis sp. in different aquaculture wastewater media. The experiment was conducted from September to October 2021 using a Completely Randomized Design (CRD) with four treatments: P0 (control/seawater), P1 (vannamei shrimp pond wastewater), P2 (milkfish pond wastewater), and P3 (grouper pond wastewater), each with three replications. The results showed that P1 produced the highest growth performance, with cell density reaching 2.15 × 10⁶ cells/ml. These findings indicate that shrimp pond wastewater can be utilized as an alternative medium for microalgal cultivation while simultaneously supporting sustainable aquaculture waste management.
Dampak Peningkatan Konsentrasi Deterjen terhadap Kualitas Air dan Respons Perilaku Ikan Nila (Oreochromis niloticus) Akbar, Helmy; Utomo, Bagus A.; Zuhri, Muhammad Isnan; Pambudi, Wiwid Arif; Ammar, Esraa E.; Effendi, Hefni
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.11525

Abstract

The increased use of detergents during the COVID-19 pandemic has raised concerns regarding their impact on aquatic environments, particularly water quality and aquatic biota. Even prior to the pandemic, the effects of detergent exposure on water quality and aquatic organisms had been studied, but the surge in hand soap and cleaning product usage has likely led to higher concentrations of Linear Alkylbenzene Sulphonate (LAS), a common active ingredient. This study aimed to determine the median lethal concentration (LC50) of detergent compounds, observe behavioral changes in Oreochromis niloticus (Nile tilapia), and examine histopathological damage to gill tissues following exposure. The LC50 value was determined to be 0.061 mg/L, with an effective concentration range between 0.059 mg/L and 0.063 mg/L. Behavioral responses observed in exposed fish included disorientation, reduced responsiveness, and lethargic movements. Histological analysis revealed significant damage to the gill tissue in exposed specimens compared to the control group. These findings indicate that increased detergent concentrations in aquatic environments may pose a significant threat to fish health and overall ecosystem stability.

Page 10 of 10 | Total Record : 99

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