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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.
Arjuna Subject : -
Articles 293 Documents
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The Effect of Ketapang Leaf Extract (Terminalia catappa) For Soaking Gouramy Fish Eggs (Osphronemus gouramy) on Hatching Rate and Survival Rate Wildan Rasyid Mukhtar; Sri Hastuti; Dewi Nurhayati
Journal Omni-Akuatika Vol 21, No 2 (2025): Omni-Akuatika November (Inpress)
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2025.21.2.1133

Abstract

The problem that often occurs in the process of hatching gourami fish eggs is the low egg hatching rate due to fungal attacks. One way to overcome this is by soaking eggs with ketapang leaf extract as an ingredient that has an antifungal effect. This research aims to determine the effect of soaking gouramy eggs (Osphronemus gouramy) in ketapang leaf extract at different doses on the hatching rate. The research was conducted using a completely randomized design (CRD) with 4 treatments and 3 replications. Treatment A uses 0 g/L ketapang leaf extract, treatment B 1 g/L, treatment C 2 g/L, treatment D 3 g/L. The parameters observed in this study were: egg hatchability, larval survival, prevalence of fungi in eggs and water quality parameters of egg hatching and larval rearing media (temperature and pH). The results showed that soaking eggs with ketapang leaf extract had a significant effect (P<0.05) on egg hatchability, fungal prevalence and survival rate. The highest hatching rate value was on treatment C at 88.33±2.08%, followed by treatment D at 84.67±4.51%, treatment B at 78.67±5.13%, and treatment A at 73.67±3.51%. The lowest prevalence value of the fungus that attacks the eggs was in treatments C and D is 10.00±3.51% and 10.67±3.61%, followed by treatment B at 15.00±1.00%, and treatment A at 24.67±4.73%. The highest larval survival value was in treatment C with 81.20±0.74%, followed by treatment D at 79.13±1.93%, treatment B at 75.26±5.81%, treatment A 66.97±3.00%. Water quality for temperatures ranges from 23-28 oC and pH ranges from 6.7-7.5.
The Effectiveness of Different Plant Types in Reducing Total Ammonia Nitrogen and Increasing Growth of Goldfish (Carrasius auratus) In Aquaponic Systems Muhammad Webby Hibrizi; Dicky Harwanto; Vivi Endar Herawati
Journal Omni-Akuatika Vol 21, No 2 (2025): Omni-Akuatika November (Inpress)
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2025.21.2.1186

Abstract

Goldfish is one of Indonesia's most popular ornamental fish due to their high economic value. The high market demand for goldfish led to increased production and intensified cultivation. The intensification can impact water quality and increase waste production. This can affect the availability of supportive cultivation land and increase the water demand. Using an aquaponic system in Goldfish cultivation is a viable solution that can help maintain water quality and reduce high waste production. This study aims to evaluate different types of plants in reducing Total Ammonia Nitrogen (TAN) and assess the impact of different plant types on goldfish growth. This study used goldfish with a stocking density of 12 fish in each container (15 liters). The study employs an experimental method and a completely randomized design (CRD) with 4 treatments and 3 replications. The treatments of Goldfish culture were without plants (A), Lactuca sativa (B), Amaranthus tricolor (C), and Brassica oleracea (D). The observed variables included Dissolved Oxygen, pH, temperature, TAN, nitrate, absolute fish weight, absolute fish length, plant length, Feed Conversion Ratio, Specific Growth Rate, and Survival Rate. The results indicated that different plant types significantly affected TAN reduction and goldfish growth (P<0.05). The best TAN reduction and growth were observed with A. tricolor (95% probability). Amaranthus tricolor effectively reduced TAN levels and enhanced goldfish growth. This study provides valuable information on the impact of different plant types in lowering TAN levels and improving goldfish growth in an aquaponic system.Keywords: hydroponics, kale, lettuce, recirculating, spinach
Spatial Modeling of Seaweed (Kappaphycus alvarezii) Cultivation Suitability Using GIS in Tinangkung Waters, Central Sulawesi, Indonesia Sri Sudewi; Maharaji U Labugis; Ahsan Mardjudo; Fadly. Y Tantu; Umar Alatas
Journal Omni-Akuatika Vol 21, No 2 (2025): Omni-Akuatika November (Inpress)
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2025.21.2.1314

Abstract

Particularly in the waters of Tinangkung, Central Sulawesi, the management of seaweed through marine spatial planning and evidence-based site selection remains extremely limited. The objective of this study was to assess the suitability of the environment for Kappaphycus alvarezii cultivation based on spatial modeling using a Geographic Information System (GIS). Eight environmental parameters were tested, namely depth, temperature, salinity, brightness, current velocity, nutrients (nitrate and phosphate), pH, and dissolved oxygen (DO), which were integrated into GIS software using the weighted overlay method to produce a land suitability map. The results indicated that the area was divided into three suitability classes, namely highly suitable (S1) covering an area of ± 722.79 ha (31.8%), suitable (S2) covering an area of ± 1,616.72 ha (66.6%), and unsuitable (N) covering an area of ± 88.29 ha (3.6%). The central and southern zones of Tinangkung Bay are classified as highly suitable (S1) with stable water characteristics, high clarity, and optimal oxygen and salinity content. In contrast, coastal and estuarine areas are classified as less suitable (S2) due to the influence of land runoff, which alters salinity and pH. GIS-based modeling is effective in integrating environmental data to assist in a comprehensive mapping of marine aquaculture suitability. This study produced the first land suitability map for K. alvarezii aquaculture in Tinangkung waters, which can serve as a scientific basis for the formulation of marine spatial planning policies and sustainable seaweed aquaculture management in Central Sulawesi.

Page 30 of 30 | Total Record : 293

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