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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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Effectiveness of different dosages of vitamin E on the maturation of freshwater lobster (Cherax quadricarinatus) Ladio, Mika; Komariyah, Siti; Putriningtias, Andika
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 1 (April, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i2.7419

Abstract

This study aims to determine the effectiveness of different doses of vitamin E on the maturation of freshwater crayfish (Cherax quadricarinatus). The method used was a Randomized Block Design (RAK) with 4 treatments and 3 replications. The treatments in this study were P1 (control), P2 (vitamin E 150 mg/kg feed), P3 (vitamin E 300 mg/kg feed), and P4 (vitamin E 450 mg/kg feed). Parameters observed in this study were Gonad Maturity Index (GIC), fecundity, and egg diameter. The results of Duncan's analysis showed that the increasing vitamin E to feed was significantly different (P<0.05) with treatment without increasing vitamin E to LAT maturation such as gonadal maturity index, fecundity, and egg diameter. However, administering different doses of vitamin E (150 mg/kg of feed, 300 mg/kg of feed, and 450 mg/kg of feed) had no significant effect on LAT maturation. The treatment without the increasing vitamin E did not show maturity, which was indicated by the value of all parameters 0, while the treatment with the increasing vitamin E to the feed resulted in a range of IKG values, fecundity, and egg diameter respectively was 8.28 - 9.84%, 230.66 - 30.66 eggs and 0.46 - 0.48 mm. The best treatment in this study was treatment with a dose of vitamin E 450 mg/kg feed because it had the highest reproductive performance and could accelerate gonadal maturity in LAT.Keywords: Egg Diameter; Fecundity; Freshwater Lobster; Maturation; Vitamin E
Second record of the Blacktip Grouper Epinephelus fasciatus (Teleostei: Serranidae) in the Mediterranean Sea Gokoglu, Mehmet; Bicer, Erkan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 2 (August, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i2.6544

Abstract

A red grouper was caught with a spear gun at depths of 8-10 m at the Alanya Harbor Breakwater. The purpose of this study is to determine this species, which is seen for the first time in the Mediterranean coasts of Turkey, and to add it to the Gulf of Antalya fish fauna. In the species identification, it was determined that this fish was Epinephelus fasciatus. E. fasciatus caught in Alanya Harbor is the second record for the Mediterranean and the first record for the Turkish coast. This fish became the second lessepsian Serranid species detected in the Gulf of Antalya, and the number of Serranid species with high economic value increased to nine with this species.
Application aquaponics biofloc of sangkuriang catfish (Clarias sp.) Yonarta, Danang; Malik, Deri; Fitrani, Mirna; Rarassari, Madyasta Anggana
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 2 (August, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v10i2.10787

Abstract

The value of catfish production in Indonesia has decreased drastically every year. Increasing stocking density can be a solution to increase production, but it will have a negative impact on decreasing water quality which will also disrupt catfish production. Therefore, it needs to be accompanied by the application of biofloc and aquaponics technology which plays a role in maintaining optimal water quality while providing additional natural feed (floc) which can reduce feed use and reduce water usage. This study aims to increase the production value of sangkuriang catfish through the application of biofloc and aquaponic systems. This research was conducted in October-November 2022 at the Raudhatul Ulum Sakatiga Agribusiness Group, Ogan Ilir Regency. This study was designed using a comparison experiment. The treatments given consisted of P0 (control), P1 (Maintenance of sangkuriang catfish aquaponic biofloc of kale plant), and P2 (Maintenance of Sangkuriang catfish aquaponic biofloc of lettuce plant). The results showed that P2 was the best treatment which resulted in absolute growth in weight and length of 7.18 g and 3.74 cm, survival of 98%, and growth in length of kale of 30.9 cm.Keywords: aquaponics; biofloc; sangkuriang catfish
Coral community structure at Celukan Bawang Reefs, Buleleng Regency, Bali Island Widiastuti, Widiastuti; Kaigere, Daniel Tosan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 3 (December, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i3.8691

Abstract

Celukan Bawang water has a strategic location in the northern part of Bali Island that threatened its surrounding coral reefs by shipping, power plant, industrial activities, and shrimp ponds. However, there is limited data on its biodiversity status. Therefore, it is necessary to provide factual information regarding the coral reef ecosystem condition in scientific data. This study aimed to measure the coral reef`s components and the community structure. The coverage of coral reef components was collected based on the UPT method, while community structure data was taken in a belt transect within two different sites. All data was collected in December 2020. The difference in coral reef ecosystem components among sites was analyzed with the Paired-T and Kruskal-Wallis tests (for the non-homogenous data). Results showed that the coverage of live coral colonies in Site 1 is categorized as poor, whereas Site 2 is classified as moderate. Reefs were dominated by type growth non-Acropora massive from the family of Faviidae and encrusting from the family of Pocilloporidae. Statistically, there were no significant differences in all coral reef ecosystem components among Sites 1 and 2. Diversity and Evenness Indices were similarly low in the two sites. Dominance Index demonstrated that Site 1 was lower than Site 2 (moderate). It might be related to the coverage of the abiotic component, which, despite being statistically insignificant, showed that Site 2 has a higher percentage of rubbles and rocks. Rubble and rock can be a substrate for the coral juvenile to attach.Keywords: Community structure; Coral reef; Celukan Bawang; Buleleng
Functional properties from nile tilapia (Oreochromis niloticus (Linnaeus, 1758)) frame protein hydrolysis Prasetyo, Dwi Yanuar Budi; Setyastuti, Aryanti Indah; Kresnasari, Dewi; Apriliani AGS, Dwi
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 3 (December, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i3.5526

Abstract

This study was to determine the functional properties of fish protein hydrolysis produced from tilapia frame. This study used a factorial design where the first factor was different types of proteolytic enzymes (E1 = bromelain, E2 = papain) and the second factor was different hydrolysis time (T1 = 5 hours, T2 = 6 hours) and was carried out with 3 replications. The results of the analysis showed that the different types of enzymes and hydrolysis time had a significant difference on the yield, degree of hydrolysis, proximate, viscosity, and protein solubility. This product has the potential to be used as food additives that can give special function properties so further research needs to be carried out to investigate these special functional properties for health and reduce the fat content that can affect the self-life product.Keywords: Functional properties; Protein hydrolysis; Nile tilapia frame
Identification and prevalence of ectoparasites in vannamei shrimp (Litopenaeus vannamei) in Pantai Gading Village, Secanggang District, Langkat Regency Sumiati, Sumiati; Rosmaiti, Rosmaiti; Komariyah, Siti
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 3 (December, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i3.6787

Abstract

Vannamei shrimp (Litopenaeus vannamei) is a type of shrimp that is often cultivated. This study aims to identify ectoparasites and their prevalence in vannamei shrimp in the village of Pantai Gading, Kec. Secanggang Kab. Langkat. This research method is a survey method, where the observed ponds are 3 ponds and samples are taken as much as 5% of the stocking density of biota. Samples were taken randomly and then examined at the Laboratory of the Faculty of Agriculture, Universitas Samudra. Organs observed included carapace, gills, swimming legs, walking legs, and tail. Based on the identification results, three types of ectoparasites that infested were obtained, namely from the Phylum Protozoa including Zoothamnium sp., Epistylis sp. and Vorticella sp., with prevalence of 83.33%, 10% and 7.33%, respectively. The results of the observation of water quality parameters showed that the temperature ranged from 30.7 to 32.3 oC, pH 6.85-7.25, DO 2.6-3.6 mg/l, salinity 7-10 ppt, ammonia 0-0.01 ppm, nitrate 10-12 ppm, and nitrite 0-0.01 ppm. The highest prevalence of ectoparasites is Zoothamnium sp.Keywords: Ectoparasites; Identification; Prevalence; Vannamei Shrimp
Growth and survival of catfish (Clarias gariepinus) with addition of papain enzymes in feed at Karang Dapo Village, Pagaralam, South Sumatera Nuraisyah, Alni; Mukti, Retno Cahya
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.6067

Abstract

Catfish (Clarias gariepinus) is a freshwater fish that is widely cultivated in Indonesia. Production cost of fish farming activities spend 60-70% on the use of feed. Therefore, feeding must be effective and efficient so that catfish can make good use of it for its growth. The addition of an exogenous enzyme in the form of papain enzyme can increase the efficiency of feed utilization. The purpose of this study was to determine the effect of the addition of the enzyme papain in feed on the growth and survival of sangkuriang catfish (Clarias gariepinus). The treatments consisted of P0: control (without the addition of the papain enzyme) and P1: treatment with the addition of the papain enzyme with a dose of 1.5 mg kg-1 of feed. The parameters observed were absolute weight growth, absolute length growth, feed efficiency, survival, and water quality. The results showed that the addition of the enzyme papain to the feed produced the highest of absolute weight growth 19.97 g, absolute length growth 7.74 cm, feed efficiency 90.25%, survival rate 90%, and water quality such as temperature from 24.3 - 28.3 0C and pH 7.2 - 7.4. Keywords: catfish, feed, papain enzyme 
Mangrove community structure on Kapo-Kapo Island, Mandeh Region, Pesisir Selatan Regency Kamal, Eni; Yuspardianto, Yuspardianto; Bukhari, Bukhari; Pratama, Ananda
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 1 (April, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i2.9212

Abstract

This study aimed to analyze the structure of the mangrove community including the identification of species, density, frequency, dominance, important value index, and mangrove basal area on Kapo-Kapo Island, Mandeh Region, Pesisir Selatan Regency. Mangrove community structure data collection was carried out by direct observation, starting with data collection and identification of species, number of individuals and diameter of mangrove tree. In collecting data on the structure of the mangrove community, water quality measurements were also carried out pH, salinity, temperature and looking at the substrate of the mangrove. Based on the results of the study, identified species of mangrove in Kapo-Kapo Island, Mandeh Region, Pesisir Selatan Regency, namely R. apiculata, S. casseolaris, and L. littorea. The average values of KR, FR, DR and INP on tree-level mangroves at R. apiculata were 97.00%, 65.00%, 93.02%, and 255.03%. S. casseolaris 1.82%, 28.33%, 6.14%, and 36.29%. L. littorea 1.18%, 6.67%, 0.84%, and 8.68%. The species R. apiculata had the highest Important Value Index from the tree level of the most dominating species on each transect.Keywords: Kapo-Kapo Island; mangrove; structure of the mangrove community
Cultivation of microalgae Nannochloropsis sp in chicken manure to increase biomass and lipids as an introduction to biodiesel production Ayuzar, Eva; Mahdaliana, Mahdaliana; Khaidir, Khaidir; Fitria, Ade; Erlangga, Erlangga
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 2 (August, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i2.6721

Abstract

Microalgae is one of the natural resources that has the potential to make biodiesel because it contains a fairly high amount of oil. The content of fat (lipid) and fatty acid (fatty acid) in microalgae is a source of energy and is used as raw material for biodiesel. In lipids there are elements of saturated fatty acids that play a role in the process of making biodiesel. The addition of growth nutrients into microalgae culture media is considered the most influential aspect on the quantity of biomass produced by microalgae cultivation. This study aims to determine the effect of chicken manure on the growth rate of Nannochloropsis sp. and to get the best treatment the lipid content of Nannochloropsis sp. of dry weight. The method used in this study was to use a non-factorial Complete RandomIzed Design (RAL) with 3 repeat treatments. The treatments in this study were A: 0 mg/L, B: 250 mg/L, C: 300 mg/L, D: 350 mgL. The results showed that the effect of giving chicken manure with different doses had a very real effect on the density of Nannochloropsis sp, and population peaks. Treatment B with a dose of 250 mg/L of showed the best results with an average density value of 4713 x 104 cells/ml and a population peak of 9415 x 104 cells/ml and the highest lipid levels found in treatment B, which is 12.73.  Water quality during the study was conditioned standard. Temperature 26 - 27 oC, pH 7.1 - 7.7, DO 5.2 - 6.3 and salinity 31 - 34 ppt. Based on the results of the study found that lipid results are high, so it is possible to try biodiesel testing.Keywords: Biodesel; Biomass; Lipid; Microalgae; Nannochloropsis  sp
The potential of fishery waste as an alternative source of natural calcium: a review Suprihadi, Suprihadi; thaib, Azwar; Nurhayati, Nurhayati; Handayani, Lia
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 2 (August, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v10i2.9755

Abstract

Research on calcium minerals that are effective and safe for health and the environment is being developed. These studies aim to find natural ingredients that contain high mineral levels, study effective methods, and study the characteristics of calcium obtained. Natural calcium is interesting to develop because it comes from renewable natural resources such as those fishery wastes. This article contains a study of the potential of fish bones, shellfish shells, and crustacean shells as natural sources of calcium and methods of manufacture. Oyster shells that are crushed at 900°C for 2 hours will produce Ca2+ levels of 56.77% while calcination for 4 hours produces Ca2+ = 86.22%. direct shells calcined at 900°C; 4 hours yields Ca2+= 77.15%.   The yield produced with a calcination time of ‰¥ 4 hours is relatively stable, which is 55 -57 %.Keywords: Calcium; Clam shells; crustacean shells; fish bones 

Page 15 of 35 | Total Record : 341

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