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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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Nutritional and microbial safety of common commercial aquafeeds sold in Ogun State, Nigeria Ojetayo, T.A; Durojaiye, Abiola; Bamidele, N.A; Omotehinse, O.M; Teluwo, S.I
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.v9i3.7112

Abstract

The nutritional and microbial safety of fish feeds were investigated in this study. Commercially available fish feed brands (Eco-float, Skretting, Top-Feeds, Blue Crown) were procured from sales outlets in Ogun State, Nigeria. Moisture ranged from 8.15 to 8.82 and these values were not significantly different (p>0.05) except for Topfeed. Skretting had the highest crude protein value (48.49±0.03) while Ecofloat recorded the least value of 45.30±0.06 (p<0.05). The values obtained for crude fibre, crude fat, ash and carbohydrate were significantly different (p<0.05) across the sampled feeds. Crude fibre ranged from 4.31±0.04 in Ecofloat to 3.20±0.03 in Skretting. Skretting had the highest value recorded for crude fat (6.27±0.11) and ash (10.06±0.18) while Ecofloat had the least value of 1.29±0.00 and 8.01±0.17 respectively. Ecofloat had the highest value for carbohydrate (32.95±0.07), marginally followed by Topfeed (28.79±0.13) and Bluecrown (28.65±0.06) with Skretting recording the lowest value (23.55±0.38). The values for all the minerals analyzed were significantly different (p<0.05). Calcium had the highest values across the sampled feeds, followed by sodium while potassium recorded the lowest values. Tannin recorded the highest value amongst all the phytochemicals, followed by flavonoids and the least value was recorded for glycosides. Total aerobic count, total coliform count and total fungal count ranged from 1.61±0.01 to 3.53±0.0, 0.00±0.00 to 3.10±0.01 and 0.00±0.00 to 2.34±0.05 respectively. Isolated bacteria include Staphylococcus aureus, S. saprophyticus, Klebsiella spp, Bacillus spp and Escherichia coli. Fungi identified were Aspergillus niger, Rhizopus spp, Aspergillus flavus, Geotrichum spp and Saccharomyces spp. Hence, there is need for quality monitoring.Keywords: aquafeed safety, microbial risk, Nigeria
Toxicity test of LC-50 (Lethal Concentration) surfactant LAS (Linear Alkylbenzene Sulfonate) against white snapper (Lates calcarifer) fingerlings on a laboratory scale Daulay, Anggi Mayulina; Erniati, Erniati; ˜Akla, Cut Meurah Nurul; Erlangga, Erlangga; Imamshadiqin, Imamshadiqin
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.v9i3.6780

Abstract

LAS (Linear Alkylbenzene Sulfonate) surfactants are the main cleaning agents from the anionic group found in detergents that are widely used in Indonesia. LAS decomposes in surface water for 1-2 days, in sediments it decomposes for 1-3 days, in marine and estuarine systems it decomposes for 5-10 days. LAS is generally degraded by as much as 90% within 3 months, with a time ranging from 5-30 days (World Health Organization, 1996). LAS surfactants can cause damage to the gill epithelium and blockage of branchiola channels in fish. This study aims to determine the toxic effect of LAS surfactant on the survival of white snapper (Lates calcarifer) fry and to determine the toxicity value of LC50 (Lethal Concentration) of LAS surfactant to white snapper (Lates calcarifer) fry on a laboratory scale. This research was carried out on September 21 - October 04, 2021 at the Marine Science Laboratory, Faculty of Agriculture, Malikussaleh University using laboratory experimental methods with 5 treatments, namely: control treatment A (0 ppm), B (0.83 ppm), C (1.58 ppm). ), D (2.16 ppm), and E (2.91 ppm). The results of this study cause barramundi to experience irregular movements, mouth opening and operculum tend to be fast and irregular, scales are pale and peeling, and cause death, LAS surfactants affect water quality such as pH and dissolved oxygen, but have no effect on salinity and temperature. The 24-hour LC50 value is 1.95 ppm, the 48-hour LC50 value is 1.86 ppm, the 72-hour LC50 value is 1.70 ppm, and the 96-hour LC50 value is 1.58 ppm.Key words: LAS surfactant; LC50; toxicity; white snapper
First Record for the Histioteuthis reversa (Verrill, 1880), (Cephalopoda/Histioteuthidae) in the Gulf of Antalya/ Turkey USTUNER, Hatice; GOKOGLU, Mehmet
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.v9i1.6010

Abstract

A different squid species was caught with a trawling net at the coordinates of 36o 39'.431'' N; 31o 9.841''E and a depth of approximately 600-650 m in the Gulf of Antalya. In the identification of species, this squid species was determined to be Histioteuthis reversa (Verrill, 1880). This is the second record for the squid species in the Mediterranean Coast of Turkey and the first record in the Gulf of Antalya.Keywords: Gulf of Antalya; Histioteuthis reversa; Mediterranean; Record
Application of recirculating aquaculture system in black tiger shrimp (Penaeus monodon) nursery indoors Bulan, Rifqi; Muliani, Muliani; Zulpikar, Zulpikar; Adhar, Saiful; Ayuzar, Eva
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.v1i2.8885

Abstract

Water quality is one of the determining factors for the success of tiger shrimp in super intensive tiger shrimp culture that has very high productivity, this produces a lot of waste in the form of manure and leftover food which is a trigger for the decline in water quality. This study aims to determine the use of RAS using a different filter arrangement of water quality in the maintenance of tiger shrimp (Panaeus monodon). This research was conducted from August to September 2019 at the Hatchery and Aquaculture Technology Laboratory, Faculty of Agriculture, Malikussaleh University. The method used in this study is an experimental method with data collection techniques with a non-factorial Completely Randomized Design (RAL) consisting of 4 treatments and 3 replications that were treatment A without filter (control), treatment B: physics filter, chemical filter, biological filter, treatment C: chemical filter, biological filter, physics filter, and treatment D: biological filter, physics filter, chemical filter. The results showed that the use of different filter arrangements in RAS has an influence on water quality parameters except for temperature, increase in length, and weight and has a very significant effect on survival. The best water quality was found in treatment B, physical filter, chemical filter, band iological filter.Keywords: black tiger shrimp; Recirculating Aquaculture System; water quality
Characteristic of gelatin bone tilapia (Oreochromis nilaticus) extracted with acid and base Diharmi, Andarini; Nurhanif, Helmi; Sari, N Ira
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.v9i2.6159

Abstract

This study was aimed to determine chemical and physical characteristics of extracted tilapia fish bone gelatin using acid (HCl) and alkaline (NaOH) solutions. The research method was used comparative experimental with Paired t-test consisting of 2 treatments, namely 4% HCl and 4% NaOH with 3 replications. Analysis parameters was consisted of yield, gel strength, viscosity, pH, moisture content, and ash. Characteristics of gelatin extracted using acid solution was resulted in yield, gel strength and viscosity was 4.40, 182.65 g/bloom. and 9.90 cP. Characteristic of gelatin extracted with acid has moisture, ash and pH levels of 5.85%, 2.35%, and 4.25. Gelatin extracted with bases was produced physical characteristics of yield, gel strength, and viscosity of 4.67%, 150.41 g/bloom and 6.03 cP and chemical characteristics (moisture, ash, and pH) were 5.77%, 3.37%, and 10.24. The extraction process using acids and bases resulted in tilapia fish bone gelatin with significantly different characteristics on gel strength, viscosity, pH, and ash except yield and moisture content. Gelatin was produced from tilapia fish bones using acids has gel strength, pH, ash, and moisture content in accordance with SNI standards except for viscosity, while gelatin uses bases had gel strength, viscosity and moisture content, except for pH and ash.Keywords: characteristic physico-chemical; gel strength; pH; viscosity; yield
Biochemical analysis of candidate probiotic bacteria was isolated from the digestive tract of the Banana shrimp (Penaeus merguiensis) Raharja, Hendra; Zubaidah, Anis; Prasetyo, Dony
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.v10i2.9062

Abstract

In nature, there are many types of bacteria that can act as probiotics. These bacteria can come from soil, water, plants or even the digestive tract of animals. This study aims to analyze the biochemical characteristics of probiotic candidate bacteria originating from the digestive tract of giant prawns. The method used is a descriptive explorative method to perform biochemical analysis of the types of probiotic bacteria derived from jerbung shrimp. The biochemical analysis included the Catalase test, Oxidase test, Urea test, Citrate test, TSIA, Methyl red, Voges-Proskaeurs, and sugar fermentation test (D-Glucose, Sucrose, Inositol, Manisitol. Laboratory analysis results showed that the isolated bacteria had morphological characteristics rod-shaped, gram-positive, does not produce catalase and oxidase enzymes, but can produce citric enzymes. These bacteria are acidic, capable of fermenting glucose, sucrose, inositol, and mannitol. The conclusion of this study, probiotic candidate bacteria from the test results showed compatibility with Lactobacillus sp bacteria.Keywords: isolation; probiotics; shrimp
Existing condition analysis of mangrove community structure at Bolihutuo Coast Area, Boalemo, Gorontalo Province Moha, Yowan; Bay, Maria Kriscintya Ani; Sentia, Sentia; Kasim, Faizal
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.v9i2.6221

Abstract

The current study aimed to determine the existing condition of the extent and ecological developmental of the mangrove forest area at one coast located on the Tomini Bay, precisely, at the Bolihutuo Village coast Boalemo District, Gorontalo province. The data were collected for two months from August to September 2021, consisting of the mangrove extent area digitized from Google earth and the mangrove biophysical sampling using line-transect plots in different sizes 10x10 and m 5x5 m to examine categories mangrove levels of tree and saplings. The result showed that mangrove patches sized between 0.08 - 29.35 ha, which constructed a total area of 60.61 ha of mangrove forest in Bolihutuo. A total of 10 mangrove species were found as the occupant of the forest area where the dominant species was found in Rhizophora stylosa at the tree and sapling levels. The co-dominance was found different at both levels, namely Ceriops decandra at the sapling level while Rhizophora mucronata species at the tree level.Keywords: Mangrove patch; Dominant rank; IVI; Species richness; R. stylosa
Application of aquaponics technology with different substrate combinations on water quality and growth of tilapia (Oreochromis niloticus) Jannah, Miftahul; Zulpikar, Zulpikar; Muliani, Muliani
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.v8i3.3711

Abstract

Tilapia (Oreochromis niloticus) is a type of freshwater fish that is widely cultivated by Indonesians. The problem that often arises in cultivation is lack of water quality. One of the ways to improve water quality is by using aquaponics technology, which can help to overcome lack of water quality by using a combination of different sub-extracts. This study was aim to determine the effect of different substrate combinations on water quality, growth of tilapia (Oreochromis niloticus) and lettuce vegetables. This study used an experimental method with a completely randomized design (CRD) with 4 treatments and 3 replications. That was control, rockwool and sawdust, rockwool and charcoal, rockwool and husk charcoal. The results showed that the use of different substrate combinations had no significant effect on water quality and fish growth. The best water quality was found in treatment D (rockwool and husk charcoal) with ammonia content of 0.09 mg / L, nitrate 13.45 mg / L, temperature 28.84 0c, pH 7.29 and DO 5.75 mg / L.Keywords: aquaponic system; substrate; tilapia; water quality.
Enlargement of tilapia (Oreochromis niloticus) in swift water ponds at the Bedegung Fish Seed Center, Muara Enim, South Sumatera Paradhiba, Aulia Marwah; Suhermansyah, Suhermansyah; Mukti, Retno Cahya
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.v10i2.9784

Abstract

Tilapia (Oreochromis niloticus) is a fish that is widely consumed by people in Indonesia. Market demand for tilapia increases every year, so tilapia production needs to be increased, especially in the process of rearing tilapia. This activity aims to determine the technique of rearing tilapia in swift water ponds on growth and survival. This activity is carried out from December 2021 to January 2022 at the Bedegung Fish Seed Center, Muara Enim. The method used in this activity is field observation and collection of primary and secondary data. The stages of implementing the activities include pond preparation, seed selection, seed stocking, fish rearing, and harvesting. The parameters observed were growth, feed efficiency, survival, and water quality. The results obtained were a growth in absolute weight of tilapia by 4.79 g; an absolute length of 6.5 cm; a feed efficiency of 74.24%; and survival of 94.93%. While the water quality values are temperature 23.1-25.8oC and pH 7.55-9.12.Keywords: Tilapia; Rearing; Swift water pons
Identification of Osteochilus spilurus (Cyprinidae: Labeoninae) from North Lampung using meristic and cytochrome b gene Kurniawan, Ardiansyah; Pramono, Dasa Yuli; Indrayati, Artin; Triswiyana, Ira
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.v9i3.7009

Abstract

Osteochilus spilurus is one of native fish in Indonesia. This species from North Lampung has variations in body shape with populations in Bangka and Belitung. Morphological plasticity and genetic variation are potential causes of these differences. To confirm this, it is necessary to identify molecular using the mitochondrial cytochrome b (cyt b) gene. Fish samples from North Lampung had morphological characters matched to the description of O. spilurus. This research specimen was registered at the Bogor Zoological Museum as a supplementary note from Lampung. The phylogenetic construction shows a closer relationship between fish samples from North Lampung and O. spilurus from Bangka-Belitung, but there is a wide genetic distance between them. Genetic variation between islands that occur is predicted due to differences in ancient river flows in the past and the geographical isolation of the oceans for thousands of years.Keywords: Cytochrome b; Lampung; Osteochilus spilurus; Genetic Variation

Page 17 of 35 | Total Record : 341

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