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Acta Aquatica: Aquatic Sciences Journal
Published by Universitas Malikussaleh
ISSN : 24069825     EISSN : 26143178     DOI : -
Core Subject : Science, Education,
Materials Science & Nanotechnology Other
Acta Aquatica: Aquatic Sciences Journal is a scientific open access journal in the field of aquatic sciences, published periodically (April and October) by the Institute of Research and Community Service (LPPM) Universitas Malikussaleh (Malikussaleh University) in cooperation with Marine Center Universitas Malikussaleh, Department of Aquaculture Universitas Malikussaleh and Department of Marine Science Universitas Malikussaleh. Acta aquatica are publish original research, overviews and reviews relating to aquatic environments (wetlands, freshwater and marine waters) and the border limits of these environmental systems and the impacts of human activities on the environmental systems. Acta Aquatica has a related studies in aquatic bioecology, aquaculture, hydrology, biodiversity of aquatic biosphere, oceanology, exploitation and exploration technology of aquatic resources, fisheries product technology, aquatic microbiology, aquatic modeling, aquatic geographic information systems, and socio-economic of aquatic resources.
Arjuna Subject : -
Articles 361 Documents
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Analysis of the suitability of floating net cage cultivation land based on environmental carrying capacity in Apal Village, Banggai Islands Regency Prayitno Kumeria, Toto; Koniyo, Yuniarti; Juliana
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 3 (December, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i3.25254

Abstract

This study aims to analyze the carrying capacity of the aquatic environment and the factors that affect the development of Floating Net Cage (KJA) cultivation in Apal Village, Liang District, Banggai Islands Regency. The approach used is quantitative with a field survey method, including the measurement of physical, chemical, and biological parameters of the waters as well as social, economic, legal, and institutional analysis of coastal communities. Physico-chemical data were analyzed descriptive-comparatively based on the Decree of the Director General of PRL No. 55 of 2023, while socio-economic factors were analyzed using multiple linear regression with the help of SPSS 26 software. The results of the study show that the condition of land suitability varies between stations; temperature and general current are still appropriate, but salinity and nitrates exceed thresholds; Ammonia is in the highly appropriate category (S1), while phosphate is high at some points (N). Plankton diversity is moderate (H' 2,232–2,980), indicating fairly good ecosystem stability. Socially, economically, and institutionally, social and economic factors have a positive effect on the carrying capacity of the environment although it is not significant, while institutions have a negative effect due to weak coordination and supervision. In conclusion, the waters of Apal Village still have the potential for sustainable KJA development, but mitigation of high salinity, nutrient load control, and institutional strengthening are needed so that the carrying capacity of the environment is maintained. Keywords: Economic; Environmental Carrying Capacity; Floating Net Cages; Social; Water Quality
The effect of differences in duration of feeding time on the growth and survival of freshwater pomfret (Colossoma macropomum) larvae Prameswari Ilsa Tajri Mukti; Netti Aryani; Benny Heltonika; Ade Yulindra; Mira Rahmita Sari; Santi Ramayani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.12647

Abstract

In the fish hatchery business, the availability of silkworm feed is very limited, therefore, it is necessary to use substitute feed in the form of artificial feed produced through a fermentation process using EM4. The study was conducted from February to April 2023 at The Fish Hatchery and Breeding Laboratory of Fishery and Marine Science Faculty of Riau University. The aim of this research was to determine the effect of differences in duration of feeding times on the growth and survival of freshwater pomfret (C. macropomum) larvae, and to determine whether fermented artificial feed can be used as an alternative feed for silk worms. This study used a completely randomized design (CRD) with six treatments and three replications. Treatment used P1 = silk worm feed for 40 days, P2 = commercial feed for 40 days, P3 = fermented commercial feed for 40 days, P4 = silk worm feed for 30 days, and commercial feed fermentation for 10 days, P5 = Feed for silk worms for 20 days and commercial feed fermentation for 20 days, and P6 = Silk worm feed for 10 days, and commercial feed fermentation for 30 days. Larvae were reared for 40 days with a stocking density of 2 individuals/liter. The results showed that the best treatment was obtained in treatment P5 (20 days of silk worms + 20 days of commercial feed fermentation), with an absolute weight growth of 2.11 grams, an absolute length growth of 4.34 cm, a specific growth rate (LPS) of 16.23% / day, and a survival rate of 84.44%. Keywords: Colossoma macropomum; Growth; Replacement Feed; Silkworms; Survival Rate
Combination of phytoremediation technology of apu-apu plants (Pistia stratiotes) and blood cockle shell biofilters (Anadara granosa) in the processing of aquaculture waste Nidya Kartini; Putu Cinthia Delis; Rizha Bery Putriani; Septi Malidda Eka Putri
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.24915

Abstract

Aquaculture activities with high stocking densities will produce liquid and solid waste from fisheries cultivation which mostly contain organic materials, high levels of turbidity, and suspended solids. This study aims to measure the effectiveness of the apu-apu aquatic plant as a phytoremediator and blood cockle shell biofilter in processing organic waste from aquaculture to improve the water quality of fish farming ponds so that it can reduce waste levels. This study used a Completely Randomized Design (CRD) with two factors, namely the treatment of apu-apu plant density and observation time. Observations were carried out with three treatments and three replications. The main parameters measured were water quality which included temperature, pH, dissolved oxygen (DO), nitrate, ammonia, and phosphate levels. Observations of aquatic plants were in the form of measuring the leaf width and leaf weight of the apu-apu plant. Data analysis used ANOVA (Analysis of Variance). If there were influential variables, a further Duncan test was carried out with a significance level of 5%. The results showed that the combination treatment of apu-apu plants and mussel shells with a density of 10 clumps of apu-apu plants was more effective in reducing nutrient levels (phosphate); and 5 clumps to reduce nitrate levels during the 30-day phytoremediation process. The t-test results showed no significant difference in plant weight gain and apu-apu plant weight between treatments P1 and P2 (p<0.05). This indicates that both treatments had similar effects on apu-apu plant weight growth. Keywords: Apu-apu; Biofilter; Phytoremediation; Water Quality; Wastewater Treatment
The effect of different LED light colors on the color performance of neon tetra (Paracheirodon innesi) Samsu Adi Rahman; Erwin Wuniarto; Dicki Alif Saputra
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.24969

Abstract

The neon tetra (Paracheirodon innesi) is a popular ornamental fish known for its unique colors. Neon tetras emit a blue neon color with a red gradient. However, the fish may experience color fading when kept for long periods. This study aims to investigate the effect of different colored LED lights on enhancing the color quality of neon tetra (P. innesi). The research was conducted from August to September at the Integrated Laboratory of Muhammadiyah University Luwuk. The study used a Completely Randomized Design (CRD) with four treatments: control (no light), Treatment A: (red LED), Treatment B: (blue LED), and Treatment C: (green LED). The color quality of the neon tetra was visually observed using a camera from a distance of 10 cm. The color data was analyzed using Adobe Photoshop version 25.9 by measuring the RGB values. The results showed that the use of different colored LED lights had a significant effect, with the best RGB red value of 43.33 and the best RGB blue value of 33.30. The conclusion is that red LED lights enhance the RGB red value, and blue LED lights enhance the RGB blue value in neon tetra colors. Keywords: LED Lights; Neon Tetra; Ornamental Fish; Paracheirodon innesi; RGB
Microplastic abundance and characteristics in the Kahayan River Downstream Area: Implications for the food safety of processed fish products Zakiah; Muhammad Aldair Mukstofa Carda; Syahnan Aly Lubis
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.25089

Abstract

The increasing anthropogenic activities along the Kahayan River contribute to the discharge of plastic waste into aquatic environments, leading to microplastic accumulation that contaminates river ecosystems. This study aims to analyze the abundance and characteristics of microplastics in water, sediment, and fish from the downstream area of the Kahayan River, Central Kalimantan, and to evaluate their implications for the food safety of fish-based products. Sampling was conducted at four stations within the downstream area from March to May. Water, sediment, and fish samples were processed using the wet peroxide oxidation (WPO) method, and microplastics were identified microscopically. The results revealed that microplastics were present at all sampling stations with average abundances of 3.22 particles/L in water, 7.58 particles/kg-dw in sediment, and 2.12 particles/individual in fish. No significant differences were found among stations, indicating that contamination has become widespread throughout the downstream area. Fibers were the dominant type, followed by fragments, foams, and granules, with most particles measuring <300 µm and mainly white/transparent, blue, and black/gray. These patterns suggest that microplastic sources primarily originate from domestic activities, fisheries, and insufficient waste management. The presence of microplastics in edible fish indicates potential transfer through the aquatic food chain, posing a risk to food safety and public health. Therefore, integrated mitigation measures are urgently needed, including monitoring of fish quality, setting microplastic contamination limits in food products, and strengthening plastic waste management policies to ensure the sustainability of fishery resources and public health in Central Kalimantan. Keywords: Fish; Food Safety; Microplastics; Kahayan River
Microplastic composition in water, sediment, and fish in the Middle Section of the Kahayan River: Implications for the sustainability of floating net cage aquaculture Muhammad Aldair Mukstofa Carda; Zakiah; Syahnan Aly Lubis
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.25090

Abstract

Microplastics are emerging pollutants widely detected in freshwater ecosystems, including rivers that act as major pathways for plastic waste transport to the ocean. This study aimed to analyze the abundance and characteristics of microplastics in water, sediment, and fish from the middle section of the Kahayan River and to assess their implications for the sustainability of floating net cage aquaculture. Sampling was conducted at five stations representing different levels of anthropogenic activity. Water, sediment, and fish samples were processed using the wet peroxide oxidation (WPO) and NaCl density separation methods, followed by microscopic identification. The results revealed that microplastics were widely distributed across all environmental compartments, with mean abundances of 3,14 particles/L in water, 7,31 particles/kg-dw in sediment, and 3,63 particles/individual in fish. The highest concentrations were found in stations with intensive aquaculture, dense settlements, and active trading areas. The dominant types were fibers and fragments, mainly white, blue, and black/gray in color. Particles <300 µm predominated in water and fish, whereas those >1000 µm were more abundant in sediment. These findings indicate the transfer of microplastics from abiotic to biotic components, suggesting potential bioaccumulation within the aquatic food chain. The presence of microplastics in aquaculture environments may degrade water and fish quality, posing threats to aquaculture sustainability and food safety for local communities along the Kahayan River. Keywords: Fish; Floating net cage; Kahayan River; Microplastics
The global shipbuilding war: An in-depth analysis of the technological upgrading and competitive strategies of Major Global Regional Blocs Sanusi Mohammed Sadiq; Invinder Paul Singh; Muhammad Makarfi Ahmad; Bashir Sanyinna Sani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.25176

Abstract

This study provides a comprehensive, longitudinal analysis of ocean goods trade dynamics for BRICS, the European Union (EU), G-20, G-77, and the OECD from 2012 to 2023. Utilizing data from UNCTAD, the research employs a tripartite analytical framework, examining Revealed Comparative Advantage (RCA), Trade Openness, and Trade Intensity indices across five key sectors: Marine Fisheries, Seafood Processing, Sea Minerals, Ships & Port Equipment, and High-Technology Manufactures. A critical methodological innovation involves adjusting nominal values for inflation to derive real-term trade metrics, revealing more accurate growth trajectories. The results unveil a complex, multi-polar ocean economy with distinct bloc specializations. BRICS demonstrates a robust and rising comparative advantage in shipbuilding, positioning it as a specialized industrializer, though its overall trade openness has declined in real terms. The synthesis of these findings leads to a novel typology of regional blocs within the global ocean economy. The discussion underscores the strategic implications of these divergent pathways, emphasizing the need for policies that align economic competitiveness with the principles of the sustainable Blue Economy. This study concludes that understanding these comparative dynamics is essential for crafting effective trade, industrial, and environmental policies aimed at fostering equitable and sustainable growth within the global ocean commons. Keywords: Blue Economy, Development; Economic Blocs; Sustainability; Supply Chain
Bioecological study and health status of barramundi (Lates calcarifer) in floating net cages at Loskala, Lhokseumawe Anis Nugrahawati; Rinaldi Rinaldi; Asih Makarti Muktitama; Salmarika Salmarika; Akmal Izwar
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.25213

Abstract

The cultivation of white snapper (Lates calcarifer) holds significant economic and ecological potential. This research was conducted at the Loskala Floating Net Cage (FNC) in Lhokseumawe City. The study aims to describe the ecological conditions of the waters and analyze the health profile of white snapper. The method applied was purposive random sampling at three sampling stations. The bioecological assessment indicates that water parameters are generally suitable for white snapper cultivation; however, elevated temperatures, dissolved oxygen levels approaching the minimum threshold, and biological oxygen demand (BOD) exceeding the standard at several stations have the potential to trigger eutrophication. These conditions correlate with the detection of Vibrio parahaemolyticus and Vibrio alginolyticus, which indicate risks to fish health as well as food safety. Keyword: Barramundi, Bioecological; Biological Oxygen Demand; Dissolved Oxygen; Floating Net Cages
Contribution of large pelagic capture fisheries to the GRDP of Sulampua (North Sulawesi, Central Sulawesi, Maluku, and West Papua) in 2019–2023 Adha Susanto; Erian Febri Satriawan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.25290

Abstract

Sulampua areas such as North Sulawesi, Central Sulawesi, Maluku, and West Papua are areas that have large potential for large pelagic fish such as tuna, skipjack, and mackerel (TCT). This study aims to determine the role of TCT capture fisheries on GRDP in four Sulampua areas in 2019–2023. As well as to see how large the utilization level and sustainable catch potential of large pelagic fish in the Sulampua area. This study uses secondary data in the form of panel data obtained from the Central Statistics Agency. Data analysis of the influence of capture fisheries production on GRDP uses a multiple linear regression approach. Meanwhile, data analysis of the utilization level and sustainable catch potential of large pelagic fisheries uses the Gordon-Schaefer model. The results of the study indicate that the value of TCT capture fisheries production simultaneously influences the value of Sulampua's GRDP with the regression equation Y = 68280.60 - 0.317X1 + 7.513X2 + 15.142X3. Based on the analysis of sustainable catch calculations, tuna and skipjack tuna catches have not yet exceeded their sustainable limits, with values of 5,598,282 tons/year and 4,370,412 tons/year, respectively. Meanwhile, mackerel catches have exceeded their sustainable limits, with a value of 3,856,748 tons/year. The utilization and efforts to catch TCT in Sulampua waters are already at full capacity. Therefore, sustainable fisheries management efforts are needed. Keywords: CPUE; GRDP; Mackerel; Skipjack; Sulampua; Tuna
Efficiency of thiosulfate use as a chlorine neutralizer for water sterilization in vannamei shrimp hatchery culture systems Dani Pratama Putra; Akmal Izwar; Anis Nugrahawati
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.25292

Abstract

The use of thiosulfate as a chlorine neutralizer in water sterilization for vannamei shrimp hatchery culture is essential for maintaining water quality and minimizing organism stress. Thiosulfate effectively eliminates residual chlorine that may be harmful to cultured shrimp, thereby supporting improved cultivation success. This quantitative combined-method study was conducted at the Aquaculture Wet Laboratory of Universitas Almuslim from August to September 2024. The results showed that salinity in treatments A, B, C, and D was consistently 30‰. The highest pH value was recorded in treatment D replicate 2 (8.16), while the lowest was in treatment A replicate 3 (8.10), with an overall average of 8.12. Water temperature across all treatments ranged from 31 to 32°C. Dissolved oxygen (DO) levels were highest in treatment B replicate 1 (5.44 mg/L) and lowest in treatment A replicate 1 and treatment D replicate 2 (5.20 mg/L). Ammonia concentrations in all treatments and replicates were 0.0 mg/L. The highest chlorine concentration was observed in treatment A replicate 3 (0.10 mg/L), whereas treatments C and D showed 0.00 mg/L across all replicates. Bromine levels were also highest in treatment A replicate 3 (0.18 mg/L), with treatments B, C, and D consistently at 0.00 mg/L. Vibrio density in treatments A, B, and C was 0, while treatment D recorded 2,500 CFU/mL in replicate 1, 2,600 in replicate 2, and 8,000 in replicate 3. Keywords: Efficiency; Hatchery Scale; Thiosulfate, Vaname; Vibrio Sterilization, Water Quality

Page 35 of 37 | Total Record : 361

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