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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 341 Documents
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Phytoplankton community structure as a bioindicator of water quality in Lake Ranau, Lumbok Seminung District, West Lampung Regency, Lampung Province Syahfitri, Amanda Trya; Kartini, Nidya; Yulianto, Herman
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.18966

Abstract

The presence of phytoplankton greatly affects aquatic life because it plays an important role for aquatic biota. The purpose of this study was to identify the structure of the phytoplankton community, determine the condition of the waters and analyze the relationship between the structure of the phytoplankton community and the physical and chemical factors of the waters of Lake Ranau, Lumbok Seminung District, West Lampung. This study was conducted in November 2023 - January 2024. The determination of the research station used the purposive sampling method. Phytoplankton samples were taken using a 60 micron plankton net. Analysis of the effect of physical and chemical parameters of water on phytoplankton abundance was analyzed using PCA using statistical software. The results showed that the phytoplankton found consisted of 5 classes, namely Bacillariophyceae, Cyanophyceae, Chlorophyceae, Euglenophyceae, and Zgynematophyceae. The saprobic coefficient value of phytoplankton ranged from 0.2 - 0.7. This shows that the condition of the waters in Lake Ranau, Lumbok Seminung Regency is in a state of mild to moderate pollution. Environmental parameters that are positively correlated with phytoplankton abundance are DO, brightness, current velocity, and N/P ratio. Environmental parameters that are negatively correlated are temperature and parameters that do not affect phytoplankton abundance are H2S and pH.  Keywords: Lake Ranau; Phytoplankton; Saprobic
Evaluation of Jatigede Reservoir water quality parameters to support fisheries ecosystems Marsela, Kristina; Dhea, Luthfia Ayu; Hidayah, Lisa Nur; Adhihapsari, Wirastika; Aida, Gilang Rusrita
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.20834

Abstract

Jatigede Reservoir is one of the multi-functional reservoirs located in Sumedang Regency, West Java, Indonesia. The utilization of Jatigede Reservoir by the community caused ecological pressures that have resulted in a decrease in water quality and fisheries sustainability. The purpose of this study was to evaluate water quality parameters in Jatigede Reservoir to support a sustainable fisheries ecosystem. Sampling was done using purposive sampling and analysis using comparative descriptive. The results showed that the water temperature ranged from 26-29oC, pH 7.9-8.4, and dissolved oxygen 4-5.3 mg/L which still supports fisheries activities. The parameters of light transparency ranged from 0.19-1.1 m, total phosphorus 0.047 - 0.161, and chlorophyll-a 11 - 116 mg/m3 which exceeded the established quality standards. So it is necessary to manage and control pollution in Jatigede Reservoir to improve water quality and support the sustainability of the fisheries ecosystem. Keywords: Fisheries Ecosystem; Jatigede Reservoir; Water Quality
Condition and level of damage to mangrove ecosystems in Birem Bayeun and Rantau Selamat Districts Fahmi, Rizal; Yulianda, Fredinan; Yulianto, Gatot
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.20884

Abstract

East Aceh Regency is one of the many regencies that have experienced a decrease in area in the last 27 years due to the conversion of mangrove land into pond areas or other interests. Banyuen and Rantau Seulamat Districts are also among the districts that have experienced a decrease in area until 2014. Areas that have abundant resources can be threatened by human activities. This requires appropriate ecosystem management to maintain the sustainability and sustainability of resources. This study aims to see the current condition of the mangrove ecosystem. The sampling method used is purposive sampling, with 3 mangrove data collection stations. then the density level and the level of damage will be analyzed. The results of the study showed that there has been an increase in the area of ​​mangroves in the Birem Bayuen and Rantau Seulamat Districts by 846.03 hectares from 2014 to 2023. The types of mangroves found were Rhizophora apiculata, Avicennia alba, Sonneratia caseolaris, and Nypa fruticans. There are various types of biota such as fish, crabs, birds, shrimp, molluscs and reptiles. The mangroves in Birem Bayuen and Rantau Seulamat Districts have a density level of "Very Dense", with the number of individuals 31 Ind/m2, and has a relatively very low level of deterioration. This area is still far from significant damage, but the local community is massively carrying out mangrove felling activities to be used as building materials and firewood or charcoal. It is necessary to carry out appropriate sustainable ecosystem management, one of which is conservation-based ecotourism activities. Keywords: Damage; Density; Management, Mangrove
Technical and financial aspects of albino full red guppy fish cultivation business (Poecilia reticulata) Wahyu, Wahyu; Utami, Diah Ayu Satyari; Adrianti, Ni Putu Vika
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.20976

Abstract

Guppy fish (Poecilia reticulata) albino full red variant is favored by freshwater ornamental fish hobbyists and has high demand. This study analyzes the technical and financial aspects of the guppy fish production business at Swasti Farm, Sleman, Yogyakarta. The study was conducted using a case study method. Analysis was conducted descriptively for data obtained through direct observation, interviews, and literature studies. The production activities of albino full red (AFR) guppy fish at Swasti Farm consist of; selection and maintenance of broodstock; fish spawning; fry rearing and nursery; and harvesting. Water quality management and fish health management also proceed during the production cycle. The guppy broodstock used is 3-4 months old from Swasti Farm. Fish spawning is conducted with a ratio of 2:1 between male and female broodstock. The number of offspring produced in one spawning period by the female broodstock is 42, and the final survival rate during the 80-day nursery period is 63%. The cultivation technique by Swasti Farm has been carried out well. The business profit achieved is Rp. 13,422,333 with an R/C ratio of 1.3 and a payback period (PP) of 1.3 years. The business analysis shows that the production of albino full red (AFR) guppy is a profitable and feasible business to operate. However, it is necessary to optimize the performance of cultivation production and increase the number of production units to increase profits and ensure business sustainability. Keywords: Albino Full Red; Financial Aspect; Guppy; Technical Aspec
Sensory quality characteristics of catfish fermented sausage (Pangasius sp.) with the addition of biostarter from fermented sausages Leksono, Tjipto; Sinulingga, Elsa Apriana Br.; Sidauruk, Santhy Wisuda
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.21036

Abstract

Fermented sausages are processed meat products made through a fermentation process with or without the help of bacterial starter cultures. The source of microorganisms in making fermented sausages can be sourced from natural microorganisms in meat (spontaneous fermentation), or by adding a starter culture (controlled fermentation). The purpose of this study is to find out the level of consumer acceptance of catfish fermented sausages made with the addition of biostarters from fermented sausages. The method used in this study is an experiment, namely conducting experiments on making catfish fermented sausages with different biostarter concentrations (0%, 0.2%, 0.4% and 0.6%) which are fermented within 0 days, 3 days, 6 days and 9 days. The results of the study showed that the best catfish fermented sausage with the addition of biostarter was with 04% treatment. The appearance value is 7.52 (brilliant color, attractive reddish-brown color). Aroma value 7.73 (strong smoking, fermentation and spice aroma) Taste value 8.03 (good taste, typical acidity of fermented products, not fishy). Texture value 7.62 (compact, dense and elastic). Based on this value, catfish fermented sausage with the addition of biostarter is still accepted by consumers with a fairly good quality characteristic value. Keywords: Biostarter; Catfish; Fermented Sausages; Sensory Quality
The effectiveness of Ovaprim with different concentrations on the duration of spawning and hatching power of goldfish eggs (Carassius auratus) Rumondang, Anne; Huda, Muhammad Aidil; Yeni, Mutiaragusti
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.21224

Abstract

This study aims to analyze the effectiveness of Ovaprim at various concentrations on spawning time, fertilization rate, and egg hatchability of goldfish. This study uses an experimental method with a Completely Randomized Design (CRD) consisting of four treatments: P1 (control/0 ml/kg), P2 (0.2 ml/kg), P3 (0.3 ml/kg), and P4 (0.4 ml/kg)/of fish body weight. Each treatment was repeated three times. The observed parameters in this study include spawning time, fertilization rate, and egg hatchability. The obtained data were analyzed using ANOVA and followed by Duncan's multiple range test to determine significant differences between treatments. The research results show that the use of Ovaprim at different concentrations has a significant effect on spawning time, fertilization rate, and hatching rate. The 0.4 ml/kg dose provided the best results, with the fastest spawning time of 10 hours and 3 minutes, a fertilization rate of 88.67%, and the highest hatching rate, reaching 93.30%. Thus, a dose of 0.4 ml/kg is recommended as the optimal dose to improve the spawning efficiency of goldfish in aquaculture. Keywords: Carassius auratus; Hatchability; Ovaprim; Reproductive Hormone; Spawning
Optimizing the productivity of vaname shrimp fry (Litopenaeus vannamei) through giving Potassium Nitrate (KNO3) to the cultivation of Skeletonema sp Handajani, Hany; Zubaidah, Anis; Nailin, Nila Choirun; Purnomo, Hari
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.21451

Abstract

Skeletonema sp. culture its growth is strongly influenced by the nutrients in the environment where it lives, therefore fertilizer is needed in the culture media to support the availability of both macro and micro nutrients. The purpose of this study was to determine the effect of KNO3 administration on the growth and density of Skeletonema sp. cells. and dosage to obtain the best KNO3 fertilizer. This study used a completely randomized design (CRD), consisting of 4 treatments and 3 replications. KNO3 fertilizer dosage treatments included A (100 ppm), B (200 ppm), C (300 ppm), and control K (500 ppm). Parameters measured were specific growth rate and cell density of Skeletonema sp. The results of the study on density showed that the best treatment was treatment K of 269.5 ᵡ 104 cells/mL, followed by C 300 ppm (203.5 ᵡ 104 cells/mL), B 200 ppm (126.08 ᵡ 104 cells/mL), and A 100 ppm (94.75 ᵡ 104 cells/mL). The average specific growth rate produced in each treatment corresponds to the cell density pattern, namely K (0.434/day); C(0.379/day); B(0.279/day); and A (0.220/day). The application of KNO3 fertilizer with different doses had a significant effect on the growth and density of Skeletonema sp. cells. The higher the KNO3 dose, the higher the growth rate and density of Skeletonema sp cells. high too. Keywords: Fertilizer Dose; Kalium Nitrate; Phytoplankton
Optimization of growth and survival of whiteleg shrimp (Litopenaeus vannamei) postlarvae through dietary variation: A study of physiological and microbiological responses Izwar, Akmal; Nugrahawati, Anis; Hakim, Syahirman; Irfannur, Irfannur; Putra, Dani Pratama; Azhar, Rossy; Radhi, M
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.22129

Abstract

The whiteleg shrimp (Litopenaeus vannamei) is a prominent species in global aquaculture due to its resilience to environmental fluctuations and high growth potential. The success of the larval phase is critically determined by feed quality and the stability of the culture environment. This study comparatively evaluated the efficacy of various feed types on the performance of Litopenaeus vannamei postlarvae. A comparison was made between live, frozen, and preserved natural feed (Artemia sp.) and formulated pellet feed in terms of growth, survival rate, and Vibrio bacteria abundance. The results highlighted that frozen Artemia sp. (P2) was significantly superior to other treatments. Postlarvae fed frozen Artemia sp. exhibited the highest growth (length and absolute weight) and survival rate, reaching 78.67%, significantly surpassing the pellet-fed group (K1) with a survival rate of only 60.67%. Furthermore, the Vibrio bacteria abundance in the frozen Artemia sp. fed group was also relatively low compared to the pellet-fed group (13.33 CFU mL⁻¹). Although live and preserved Artemia sp. yielded better results than pellet feed, frozen Artemia sp. remains the most effective feed choice for optimizing early-stage L. vannamei aquaculture. Keywords: Artemia sp.; Feed; Litopenaeus vannamei; Postlarvae; Vibrio sp.
Ecological study and coral mortality in the horizontal marine zone of Beras Basah Island, Bontang Rosdiani, Yulistika; Yulianda, Fredinan; Damar, Ario
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.22280

Abstract

This study aims to assess the ecological value and coral mortality in the horizontal marine zone of Beras Basah Island. The research was conducted by observing coral reefs at four stations positioned horizontally at depths of 3 meters and 5 meters using the Line Intercept Transect (LIT) method. The key parameters analyzed in this study included coral cover percentage, diversity index, dominance index, evenness index, and mortality index. The recorded coral cover percentages were as follows: hard coral (26.91%), soft coral (16.42%), sponge (0.47%), other biotic components (0.44%), algae (5.86%), dead coral with algae (21.07%), dead coral (1.78%), sand (6.60%), rubble (9.26%), and silt (11.19%). The condition of coral reefs in the horizontal marine zone of Beras Basah Island was classified as moderate, with a live coral cover value of 26.91%, based on the classification by Gomez and Yap (1988). The highest diversity index value (2.46) was recorded at Station 1(a), indicating a relatively stable community structure, while the lowest diversity index value (1.98) was observed at Station 3(b), reflecting lower diversity and potential environmental stress or disturbance in the area. This is further supported by the highest dominance index value (0.17) also found at Station 3(b). The highest evenness index values (0.87) were observed at Stations 1(a) and 1(b), indicating stable communities with high similarity and evenness. The highest coral mortality index (0.53) was recorded at Station 2(a), located in the northern area at a depth of 3 meters in the waters of Beras Basah Island. Keywords: Beras Basah Island; Biodiversity; Coral Reef; Ecological Index; LIT Method; Mortality Index
Analysis of the relationship between zoobenthos diversity, sediment characteristics, and mangrove density in the Fishery Port Areas of Bireuen Regency, Aceh Azhar, Rossy; Izwar, Akmal; Mustaqim, Andy; Nugrahawati, Anis
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.22442

Abstract

This study examines the relationship between zoobenthos diversity, sediment characteristics, and mangrove density in three fishery harbors in Bireuen District: PPI Peudada, PPI Jeumpa, and PPI Jangka. Data were collected using quadrat and line transects with purposive sampling. Peudada showed the highest zoobenthos diversity (H'=0.71) with low dominance (D=0.27) and medium sand substrate. Jeumpa and Jangka were dominated by tolerant species and coarse sand. True mangrove regeneration was more developed in Jeumpa and Jangka, while Peudada was dominated by non-mangrove vegetation. There is a strong relationship between sediment type, zoobenthos diversity, and mangrove structure. Fine sediments favored benthic diversity, while coarse sediments supported mangrove growth. The findings highlight the importance of integrated coastal ecosystem management to sustain ecological functions in fishery ports. Keywords: Bireuen; Coastal Ecosystem; Mangrove; Sediment; Zoobenthos

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