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Omni-Akuatika
Published by Universitas Jenderal Soedirman
ISSN : 18583873     EISSN : 24769347     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
OmniAquatika is a scholarly refereed research journal which aims to promote the theory and practice, innovation, engineering and management as well as social-economic relevant in fisheries and marine sciences fields. The main aspects of research areas include, but are not exclusive to the current research on cells, organisms, populations, ecosystems, or processes that affect aquatic systems in the field of fisheries and marine science. The journal also welcome other aquatic relevant aspect related to the transport, fate, control of nutrients and abatement of pollutants in the aquatic environment as well as the ecosystem rehabilitation. The authors and readers are students, scientists, and regulatory experts from the academic, industrial, and government sectors worldwide. Master thesis and part of dissertation research work might becoming the potential contributors. High-quality, research articles make up the primary content. Other contributions are short communications, reviews, and special issues. Before contributions are accepted for publication, they must pass a peer-review process managed by the editor-in-chief.
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Articles 290 Documents
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Study of Symbiont Bacteria of Acropora digitifera Coral From Ciletuh Bay, Sukabumi by Using Culture and Molecular Approach Nurfitri Nurfitri; Fiddy Semba Prasetiya; Indah Riyantini; Yuniar Mulyani; Sulastri Arsad; Mochamad Untung Kurnia Agung
Journal Omni-Akuatika Vol 15, No 2 (2019): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2019.15.2.748

Abstract

Bacteria are one of the prokaryotic microorganisms that are symbiotic with coral reefs. These microorganisms help corals in secreting mucus layers which are used as a place to live for bacteria and control the presence of pathogenic bacteria in corals. The purpose of this study was to determine the diversity of bacterial communities associated with Acropora digitifera corals in Ciletuh bay, West Java, by culture approach. Sampling was carried out at a depth of 4 meters. Morphology-based identification and molecular approach based on sequence of the small ribosomal unit (16S) rRNA gene were used to determine the bacterial species in the samples. A total of six pure isolates were identified based on morphological observation and the molecular DNA characteristics from three of them were identified with 16S rRNA gene sequences. The identification using 16S rRNA gene showed that the isolate ACD.P4.PH7.P had a close relationship with the BF strain and zb strain of Bacillus flexus (acc number MH569560.1) with a similarity of 85.44 %. While ACD.P4.PH9.P isolate has a close relationship with Bacillus sp. c234 (acc number FJ950647.1) with a similarity of 98.50 %. Additionally, ACD.P4.PH9.K isolates closely related to Bacillus sp. of strain 6RM1 (acc number MK134607.1) with a similarity of 94.78 %. This study also revealed that both microscopic identifications by morphological traits and molecular approach using 16S rRNA gene can be used in bacterial diversity assessment.
The Utilization of Native Freshwater Mussel Pilsbryoconcha exilis as Biocontrol of Pathogenic Bacteria Aeromonas hydrophila in Tilapia Aquaculture Rahman Rahman; Filibertus Tantio; Munti Yuhana; Amalia Putri Firdausi; Ranta Sumadi; Adna Sumadikarta
Journal Omni-Akuatika Vol 15, No 2 (2019): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (719.636 KB) | DOI: 10.20884/1.oa.2019.15.2.761

Abstract

This research aims to evaluate the capacity of freshwater mussel Pilsbryoconcha exilis as a biocontrol agent to prevent the transmission of Aeromonas hydrophila in tilapia cultivation. Briefly, 10 tilapia fish with average bodyweight  7,88±0,25 g were subjected to four treatments in the 8-liter aquarium with three replications in a randomized design trial. The treatments were M1 (one mussel for a two-liter of water), M2 (two mussels for a two-liter of water), and two control treatments without mussel ( M+ and M-). All treatments, except the M-, then challenged by adding A. hydrophila live culture to obtain a final density of 105 CFU mL-1 into the aquarium for 7 days duration. The final survival rate of fish, the water-total bacterial count, and the blood profile of animals were assessed. The research revealed that there is a significant impact from the presence of freshwater mussel on tilapia cultivation. Generally, the M2 treatment showed better results with a significant different (P<0,05) according to the survival rate of fish (100±0,00%), water-total bacterial count (4,53±0,03 log CFU mL-1), and fish leucocytes (4,30±0,70x104 cell mm-3). Nonetheless, there was no different (P>0,05) effect on fish erythrocytes among the treatments. Therefore, the feeding activity of freshwater mussel in the water column able to deplete pathogenic bacteria abundance and prevent pathogen transmission along with increasing the survival rate of fish.
Numerical Simulation of Ocean Wave Using High-Order Spectral Modeling Techniques: Its Influence on Transport Sediment in Benoa Bay, Bali, Indonesia Ulung Jantama Wisha; Try Al Tanto; Widodo Pranowo; Semeidi Husrin; Gunardi Kusumah; agus Maryono
Journal Omni-Akuatika Vol 15, No 2 (2019): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1052.074 KB) | DOI: 10.20884/1.oa.2019.15.2.554

Abstract

Benoa Bay is threatened by sedimentation issue within the bay. It impairs the water mass circulation, influencing scour, mixing, and turbulence as well as sediment transport processes. This study focuses on the wave characteristic and its relation to sediment transport within Benoa Bay. Spectral wave modeling techniques were employed. The equation was discretized based on the condition of winds, tidal, and currents. Total sediment transported was calculated according to the wave model result. Total suspended sediment (TSS) model was simulated which the simulation considers bed load and suspended load transport. Significant wave height (Hs) ranged 0-0.48 m and 0-0.44 m during high tidal condition and low tidal condition respectively. Wave undulation propagates toward the West and Northwest within Bay. The wave period (Ts) ranged 2-6.5 second. Total sediment transport ranged 2828.16 - 86235.66 m3/year. TSS concentration ranged 1-100 mg/L and 1-155 mg/L during high tidal condition and low tidal condition respectively. Those conditions indicate that the sedimentation has been extremely occurred within the bay. The areas around Benoa peninsula, Benoa harbor, and Serangan Island are heavily polluted by suspended sediment. Bottom sediment is stirred by hydraulic jump off wave propagation. The first wave crest induces scour, which its train carries the stirred sediment entering the bay. If ongoing, this condition will exacerbate the existing ecosystem. Benoa Bay development has a big role evoking the level of TSS and turbidity. The more the sedimentation occurs, the more the ecological problem takes place.
Effect of Land Agricultural Fertilizer on Growth of Marine Single Cell Protein, Spirulina platensis, Chlorella vulgaris and Nannochloropsis Purnama Sukardi; Ferisa Wahyunika; Tjahyo Winanto; Norman Arie Prayogo; Taufan Harisam; Arif Mahdiana; Sri Marnani
Journal Omni-Akuatika Vol 15, No 2 (2019): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.424 KB) | DOI: 10.20884/1.oa.2019.15.2.764

Abstract

This study aimed to determine the growth rate and protein content in Nannochloropsis oculata, Chlorella vulgaris, Spirulina platensis were cultured using agricultural fertilizers. The agricultural fertilizers used were Urea, ZA and TSP. Each single cell protein was cultured using the three types of fertilizers with a ratio of Urea: ZA and TSP as follows (A) 1: 2: 1 [(10:20:10 g / L)], (B) 2: 2: 1 [(20:20:10 g / L)] and (C) 3: 2: 1 [(30:20:10 g / L)], respectively. The results showed that the best ratio of Urea, ZA and TSP fertilizers to growth of Spirulina, Nannochloropsis oculata and Chlorella vulgaris was C [30:20:10 (g / L)] treatment. However, phyto-protein content in Nannochlorophsis differed significantly between fertilization treatments, C fertilization yielded the highest protein content (28.75±0.05%), when compared with A (25.13±0.01%) and B (25.14±0.02%), respectively. In Chlorella vulgaris, all fertilization treatments showed very significant differences, B fertilization (28.24%±00.006) yielded the highest phyto-protein content, if compared to A (23.63% ± 0.003) and C (19.74% ±0.006 ), respectively. All fertilization treatments showed very significant differences (P <0.05) on Spirulina platensis. The highest content of phyto-protein (62.68 + 0.05%) was present in treatment C, when compared to A (52.18 + 0.05%) and B (62.37 + 0.01%) treatments, respectively.
Carrageenan and Garlic Essensial Oil Edible Film as Protective Coating on Catfish Sausage Eko Nurcahya Dewi; Lukita Purnamayati
Journal Omni-Akuatika Vol 15, No 2 (2019): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (395.428 KB) | DOI: 10.20884/1.oa.2019.15.2.575

Abstract

The edible film based on carrageenan containing garlic essential oil (GEO) at different concentration (0%; 0,2%; 0,4%; and 0,6%) were added into carrageenan edible film (CEF) then applied on sausage, chilled storage for 10 days. The antioxidative allicin prevention on product determined its chemical characteristics such as TBA, TVBN, Aw, and pH. The addition of garlic essential oil on carrageenan based edible film was not significantly different on tensile strength. CEF with 0,6% of garlic essential oil produced the highest elongation value and the lowest Water Vapor Transmission Rate with the amount of 3,970% and 0,673%; respectively. The catfish sausage coated with 0,4% CEF produced TBA and TVBN value during chilled storage with the amount of 0,870 mg malonaldehyde/kg and 17,223 mgN/100g; respectively and not significantly different to CEF 0,6%. The result indicated that edible film containing garlic essential oil able to retard the oxidation process. Indicated from FTIR test, 0,2%; 0,4%; and 0,6% CEF containing garlic compound illustrated with S-S, N-H, C=O and C-H functional group with the wavelength of 408,91 cm-1, 925,83 cm-1, 1543,05 and 2931,8 cm-1.; respectively.
Potential of Telang Plant (Citoria ternatea) for Treatment of Aeromonas hydrophila Infection on Koi Fish (Cyprinus carpio) Yuli Andriani; Asep Agus Handaka; Rosidah Rosidah; Rida Himyati
Journal Omni-Akuatika Vol 16, No 1 (2020): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2020.16.1.751

Abstract

The aim of this study was to determine the effective concentration of telang leaf extract for the treatment of koi fish infected by the Aeromonas hydrophila bacteria and find out what clinical symptoms arise from Aeromonas hydrophila infection. The method used in this research was experimental using Completely Randomized Design (CRD) with five treatments and three replications. The treatment given was soaking koi fish infected with Aeromonas hydrophila in telang leaf extract for 48 hours with concentrations of 0, 150, 300, 450 and 600 ppm. Koi fish is infected with A. hydrophila by intramuscular injection of 0.1 ml/head with a bacterial density of 108 cfu/mL. The parameters observed were clinical symptoms including damage to fish body surface, fish response to feed and shock response. The data obtained were analyzed descriptively. The results showed that early clinical symptoms that arise are inflammation that is swelling and reddish color on the injection site and red spots. Other symptoms that occur are ulcers, hemorrhagic & inflammation, discoloration, exopthalmia and dropsy. The use of telang leaf extract with a concentration of 300 ppm was the best and effective treatment for treating the infected koi fish with A. hydrophila because within 9 days, the fish has recovered. It produced the fastest cure rate compared to other treatments.Keywords : Aeromonas hydrophila, koi fish, telang leaf extract, treatment, soaking
Efficacy of GP-11 KHV DNA Vaccine in Common Carp (Cyprinus carpio) through Feed by Different Frequency of Administration Ahmad Beni Rouf; Sri Nuryati; Sukenda Sukenda; Alimuddin Alimuddin
Journal Omni-Akuatika Vol 16, No 1 (2020): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2020.16.1.768

Abstract

GP-11 KHV DNA vaccine is a vaccine that can be used to induce immunity against the KHV virus (Koi herpesvirus). Vaccination through feed is an alternative way of administering vaccines. The study aimed to examine the effect of giving KHV GP-11 DNA vaccine through feed with different frequencies to KHV infection. The frequency of vaccine administration is GP-11 vaccination once a week; GP-11(1x), GP-11 vaccination twice a week; GP-11(2x), GP-11 vaccination three times a week; GP-11(3x), GP-25 vaccinations three times a week; GP-25(3x), negative control (without KHV test) and positive control (KHV tested). The fish were kept for 28 days after vaccination and then continued with the KHV challenge test for 28 days. The weight of carp ranges from 13.82±2.37 g maintained with a density of 15 fish/aquarium. The results showed that vaccine treatment was able to induce an immune response as indicated by the number of white blood cells, lysozyme activity and post-vaccination antibody titer showed a significant effect compared to controls. Likewise, after the challenge test, supported by IFNγ and IgM gene expression parameters after the challenge test showed the highest value of vaccine treatment rather than control. The efficacy of vaccine was showed by RPS value (%) in each vaccine treatment obtained GP-11(1x) value of 44.7±3.7a, GP-11(2x) of 78.9±18.2b, GP-11(3x) 85.6±12.6b and GP-25(3x) 79.5±18.1b. It was concluded that administering the GP-11 vaccine frequency 2 times a week provides protection as strong as giving a vaccine frequency 3 times a week.Keywords: common carp, DNA vaccine, frequency of administration, koi herpesvirus
A Survey of Macrozoobenthos Assemblages in a Tropical Mangrove Estuary in Brebes, Java Island Sheila Zallesa; Indah Riyantini; Sri Astuty; Yusuf Arief Nurrahman; Ibnu Faizal; Sulastri Arsad; Marine K Martasuganda; Fiddy Semba Prasetiya
Journal Omni-Akuatika Vol 16, No 1 (2020): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2020.16.1.754

Abstract

The mangrove forest in Brebes is one of the mangrove areas that were degraded due to abrasion and excessive logging in the North Coast of Java Island, Indonesia. This research aimed to analyze macrozoobenthos community structure in the mangrove forest that has not been documented. Surveys were carried out in the rainy season. In this study, a total of 10 sampling locations were divided into two different groups that represent “control” (station) and “disturbed” sites. The main structural parameters of the macrozoobenthos identified at each station were specific richness S (number of species), abundance N (number of individuals.m-2), the Shannon-Wiener index N1. A total of 346 specimens were counted from the two different stations (“control” and “disturbed”). These specimens were belonged to five animal classes, namely, Bivalvia, Gastropod, Malacostraca, Polychaeta, Cephalopoda. Pairwise comparison of the site groups with one-way analysis of similarity (ANOSIM) was not significant for between “control” and “disturbed” groups (p=0.062), where the average dissimilarity between the two stations was 88.42%. This result provides macrozoobenthos diversity and ecological information that may contribute to further conservation management in the mangrove forest in Brebes, Indonesia.
Design a Photobioreactor for Microalgae Cultivation with the IOTs (Internet of Things) System Ayi Rahmat; Indra Jaya; Totok Hestirianoto; Dedi Jusadi; Mujizat Kawaroe
Journal Omni-Akuatika Vol 16, No 1 (2020): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2020.16.1.791

Abstract

Internet of Things (IOTs) is an evolution of the concept of internet use that aims to expand the benefits of internet connectivity that is connected continuously with the ability to control remotely (remote control), share data (data sharing), carry out continuous monitoring (real time monitoring) and current (up to date). This research related to the cultivation of microalgae as a source of food and energy of the future, in the design of photobioreactors that are integrated with IoT, so that it can be monitored continuously, controlled and used as a model for the development of greater microalgae cultivation technology. Cultivation in this study was a closed system photobioreactor, will produce microalgae that are not contaminated by external contaminants, growth analysis can be done based on the parameters that influence it, including the cultivation room temperature, lighting level (luminance), and the color of water in the photosynthesis process of microalgae, and also control of water circulation. Visualization of controlled parameters includes, temperature parameters, light intensity, water color changes. The observed parameters will be displayed in a graphical user interface (GUI) in real time using the internet. The advantages of this system can see the growth of microalgae in detail over time, and obtained raw data that can be processed for various research purposes.
Combination Cockle Shells (Anadara granosa) and Calcite Lime to Improve Swamp Water pH for Catfish (Pangasius sp.) Culture Dade Jubaedah; Marsi Marsi; Marini Wijayanti; Sofiatul Rahmani
Journal Omni-Akuatika Vol 16, No 1 (2020): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2020.16.1.612

Abstract

Cockle shells was proven potential used as an alternative liming material. Combination of lime derived from cockle shells with calcite as common lime materials used to overcome limited quantity of cockle shells as the problem of seasonal availability of cockle shells. Besides, these materials have difference characteristics that to be expected can give better effect to pH of soil and water. This study aims to determine the best combination dose between cockle shell limes and calcite to increase the pH of water and soil, survival rate and growth of catfish (Pangasius sp.). The study used completely randomized design (CRD) with 5 treatments and 3 replications. The treatment of different combination of lime doses 100% calcite (P1), 100% cockle shell limes (P2), 75% calciteand 25% cockle shell limes (P3), 50% calcite and 50% cockle shell limes (P4), and 25% calcite and 75% cockle shell limes (P5), dose of lime used as much as 7,000 kg/ha CaO equivalent. The result showed that P4 was the best treatment according to data of swamp water pH was 8.13 and soil pH was 8.07 at final day (day 60), alkalinity 153.33 mg.L-1 CaCO3 equivalent, Ca 104.15 mg.L-1,100% survival rate, 11.23 cm absolute growth of length, 38.60 g absolute growth of weight and 128.38% feed efficiency.

Page 17 of 29 | Total Record : 290

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