cover
Contact Name
Nur Arifin
Contact Email
arifinik013@gmail.com
Phone
+6282381530516
Journal Mail Official
ajoas@ejournal.unri.ac.id
Editorial Address
Gedung LPPM Universitas Riau, Kampus Bina Widya, Jl. H.R. Soebrantas Km 12.5, Panam. Pekanbaru, Riau - 28293. Indonesia
Location
Kota pekanbaru,
Riau
INDONESIA
Asian Journal of Aquatic Sciences
Published by Universitas Riau
ISSN : 2655366X     EISSN : 27164608     DOI : http://dx.doi.org/10.31258/ajoas
Core Subject : Agriculture,
Asian Journal Of Aquatic Sciences is a journal publishes scientific articles from research by lecturers and other researchers in the waters sector. Focusing on aspects of aquatic ecology for the use of this habitat as an ecosystem for producing food (fisheries and agriculture) and its function for the earth's ecosystem. Covers aspects of biology, physics and chemistry, both for freshwater (rivers, lakes, swamps, reservoirs), brackish waters (mangrove swamps, river estuaries) and marine waters (coastal and offshore seas).
Arjuna Subject : -
Articles 10 Documents
Search results for , issue "Vol 3 No 2 (2020)" : 10 Documents clear
THE EFFECT OF AMMONIUM SULPHATE (ZA) FERTILIZER CONCENTRATION ON THE GROWTH OF MICROALGA POPULATION (Nannochloropsis oculata) Fery, Rony andes; Nasution, Syafruddin; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.94-102

Abstract

This research was conducted from 24 June to 6 July 2019 in the Regional Technical Implementation Unit of the Seawater and Brackish Aquaculture Fisheries Center (UPTD BPBALP Teluk Buo), West Sumatra. This study aim to determine the effect of Ammonium Sulfate ((NH4)2SO4) with different concentrations on the growth rate of Nannochloropsis oculata microalgae population. The method used in this study is an experimental method using a completely randomized design (CRD) one factor, namely ZA fertilizer concentration. There were 5 (five) levels concentration tested, namely 0 ml/L (control treatment), 30 ml/L (treatment A), 40 ml/L (treatment B), 50 ml/L (treatment C), and 60 ml/L (treatment D) total of 15 treatment units. The test organism in this study was N. oculata. The container used is a glass jar (2 liter capacity). The test parameters in this study are the maximum cell population density achieved during 5 days of maintenance (120 hours), relative growth, self-doubling time and specific growth rate during the exponential growth phase. The results of this study indicate that the best concentration of ZA fertilizer for cell population growth is 40 ml/L, followed by a concentration of 30 ml/L, a concentration of 50 ml/L, a concentration of 60 ml/L and the lowest at a concentration of 0 ml/L (control) .
ADDITION OF VITERNA WITH DIFFERENT DOSAGE ON PELLET FEED ON GROWTH OF GROUPER FISH SEED (Cromileptis altivelis) Irfan, Muhammad; Nasution, Syafruddin; Nurrachmi, Irvina
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.103-110

Abstract

This research was conducted from 15 June - 27 July 2019 in the Regional Technical Implementation Unit of The Seawater and Brackish Aquaculture. (UPTD BPBALP Teluk Buo), West Sumatra. This study aim to determine the best of viterna multivitamin right on the growth and the survival of grouper fish (Cromileptis altivelis) seed. The method used in this study was an experimental method using a complete randomized design (RAL) with 4 treatments (A: 0 ml / kg of feed, B: 10 ml / kg of feed, C: 15 ml / kg of feed and D: 20 ml / kg of feed). Parameters in this research are absolute weight growth, absolute length growth, specific growth rate and survival rate. The results of this research are to find out the best viterna multivitamin dose for absolute weight growth was 10 ml / kg of feed, absolute length growth was 10 ml / kg of feed, the specific growth rate was 10 ml / kg of feed and survival rate was 100% of all treatments.
COMMUNITY STRUCTURE OF GASTROPOD (MOLLUSCA) IN THE MANGROVE ECOSYSTEM OF PURNAMA, DUMAI CITY RIAU PROVINCE Bahari, Sandy; Nasution, Syafruddin; Efriyeldi
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.111-122

Abstract

This research was conducted in January 2019 on the mangrove ecosystem of Purnama Dumai City, Riau Province with the aim to determine the structure of the gastropod community which includes the type, density, diversity, distribution patterns and similarity of the community. The method used is a survey method, where the sampling location consists of 5 research stations. The type and density of gatropods are determined by drawing a transect line from the mangrove forest towards the highest tide line. The transect was placed in 3 1x1 m2 maps with a distance of 10 m. The results showed that the Gastropod species found consisted of 6 species, namely Nerita costata, Telebrelia sulcata, Cicopreus capucinus, Telescopium telelescopium, Littorina sp, Volema myristican. Based on ANOVA analysis, gastropod density between stations was not significantly different in the waters of Purnama Village, Dumai City. Diversity is categorized as medium, Uniformity is categorized as balanced and the dominance of certain types. While the overall distribution pattern of Gastropods tends to be clustered.
ESTIMATION OF CARBON RESERVED IN MANGROVE FOREST OF SUNGAI SEMBILAN SUB-DISTRICT, DUMAI CITY, RIAU PROVINCE Handoyo, Edi; Amin, Bintal; Elizal, Elizal
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.123-134

Abstract

Increasing CO2 concentration in the atmosphere is one of the factor which cause global warming. CO2 sequestration through mangrove forests is believed to be one of the efforts to reduce CO2 in atmosphere. This research was conducted in July 2019, aimed at estimating mangrove biomass, mangrove carbon stocks, soil organic carbon, and CO2 sequestration in mangrove forests in the coastal areas of Sungai Sembilan District, Dumai City, Riau Province. This research was conducted using the line transect plot method. Sampling is done by non destructive sampling by measuring DBH (Diameter at Breast Height) of mangrove trees, and soil sampling is done in a composite manner in each plot.. Mangrove biomass calculations done using allometric equations. Then, biomass is converted to carbon stock and CO2 sequestration, where the percentage value of carbon was 0.47 of biomass. As for the organic soil carbon calculation is done by multiplying the bulk density values, the percentage value of 0.47 and a depth of soil carbon.The results showed that the average estimated amount of mangrove biomass, mangrove carbon stocks, soil carbon stocks and CO2 sequestration were 621.46 tons/ha, 289.22 tons/ha, 1819.31 tons/ha and 1074.99 tons/ha. ANOVA analysis results showed that the amount of mangrove biomass, mangrove carbon stock, soil carbon stock and CO2 sequestration between stations were not significantly different (p> 0.05).
MORPHOMETRIC STUDY AND DENSITY OF Telescopium telescopium IN MANGROVE ECOSYSTEM OF SEKODI VILLAGE, BENGKALIS REGENCY, RIAU PROVINCE Alka, M. Abdi; Mulyadi, Aras; Nasution, syafruddin
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.135-146

Abstract

This research was conducted in August 2019 to determine the morphometric, density, and sex ratio of T. telescopium in Sekodi Village, Bengkalis Regency, Riau Province. Three sampling stations with three transects in each station were surveyed. The results showed that the size of T. telescopium in areas far from community settlement was bigger than areas in the fishing boat lane and community settlement: 7.2 cm, 5.8 cm, and 5.7 cm. The highest density was in areas of community settlement and the lowest in the fishing boat lane. ANOVA test showed that there is no difference of density between all the stations. Sex ratio showed that T. telescopium was in the balance category (1:1)
THE EFFECTS OF ADDING DIFFERENT CARBON ON GROWTH AND SURVIVAL RATE OF TILAPIA FRY (Oreochromis niloticus) Firmansyah, Rodhi; Arsanti, Arsanti; Panggabean, Nabilah Hanun; Nasution, Muhaimin Umri
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.158-166

Abstract

The utilization of appropriate carbon sources will have a good impact on the application of biofloc technology in aquaculture. This study aims to determine the effect on adding the different carbon sources for growth and survival rate of tilapia fries (Oreochromis niloticus). The fries were kept by the densities 30 fries/tank. This study used a completely randomized design (CRD) with 4 treatments and 3 replications. The treatments were the addition of different carbon sources on the media biofloc : A (tapioca), B (molasses), C (wheat flour), and K (control). The results showed that the absolute rate of weight and length were found on the treatment of molasses (B) was 5.84 grams, 3.5 cm, and significantly different from the other treatments (P <0.05). While the highest survival rate is 83.33% at molasses (B). The mean temperature at 28.1 to 30.00 oC, the DO from 5.00 to 7.60 mg / L, and pH 5.00-7.20.
SECONDARY METABOLITE CHARACTERISTIC OF HETEROTROPHIC BACTERIA PRODUCTION AS ANTIMICROBIA AT DIFFERENT SALINITY Apriyola, Nadya; Feliatra, Feliatra; Nurulita, Yuana
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.147-157

Abstract

This research was conducted from March-June 2019. The purpose of this study was to determine the characteristics of secondary metabolites prduced by of heterotrophic bacterial from sea water Sungai Kayu Ara Village, Siak Regency as an antimicrobial and to determine the storage time of these bacteria by measuring at the optimal growth time. Five bacterial secondary metabolite extracts used were B, C, D, and H (B. cereus) and J (V. fluvialis) obtained from the collection of Marine Microbiology Laboratory, Department of Marine Sciences, Faculty of Fisheries and Marine sciences, University of Riau. phytochemical test showed that extracts of isolates B, D, and H contained saponin compounds, while isolate J contained flavonoid compounds, however, all extracts contained alkaloid compounds. Antimicrobial test indicated that J extract inhibited A. Hydrophila at concentration 500 µg/ml but the extract could not inhibit V. algynolyticus and Pseudomonas sp concentrations determined. In the bacterial storage time test, the optimal growth of each bacterial concentration at was 7th day incubation and decreased on the 14th day.
THE ANALYSIS OF OIL CONTENT IN SEDIMENT AND COMMUNITY STRUCTURE OF MACROZOOBENTHOS IN BELAWAN WATERS OF MEDAN CITY, NORTH SUMATERA PROVINCE Tanjung, Doli Juna Setia; Amin, Bintal; Nasution, Syafruddin
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.167-178

Abstract

This research was conducted in March 2019 to determine the oil content in sediment, it’s community structure of macrozoobenthos and it’s a relationship in Belawan Waters of Medan City, North Sumatera. Four sampling stations with five replications in each station were surveyed. The results showed that the average oil content in sediments exceeded the threshold had set by the National Academy of Science. Macrozoobenthos found consists of Ocypode quadrata, Scyla serrate, Rotun dicauda, Penaeus sp, Murex tribulus, and Nassarius olivaccus. The highest abundance was in Station 3 and the lowest was in Station 2. The diversity index in each station was generally very low. Dominance Index in Station 4 was medium, whilst the other stations were high. Evenness index showed in Station 3 and 4 were in high population, Station 1 was in medium population and Station 2 was in low population. Simple linear regression analyses between oil content in sediment with community structure of macrozoobenthos indicated negative correlation ( Y = 10,5-0,0001x , R2 = 0,0004 and r = 0,02 ) which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment.
MOLECULAR IDENTIFICATION OF PROTEOLITIC BACTERIA FROM MANGROVE SEDIMENT IN DUMAI MARINE STATION Zebua, Abdi Hikmat Petra; Nursyirwani, Nursyirwani; Feliatra, Feliatra
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.179-188

Abstract

Proteolytic bacteria have an important role in the degradation of complex compounds to a simple compounds by the enzyme proteases. Sediment in the mangrove ecosystem of Dumai Marine Station may contain the bacteria. This research aims to identify the proteolytic bacteria of mangrove sediments molecularly and to examine the antagonism of pathogenic bacteria. The method used in this research was a survey. The results obtained 10 bacterial isolates (AZ1, AZ2, AZ3, AZ4, AZ6, AZ10, AZ11, AZ15, AZ18, and AZ20). Identification using 16S rRNA analysis revealed that 3 isolates showed different results, namely AZ2 had a similarity to Bacillus proteolyticus with strain MCCC 1A00365, AZ6 had a similarity to the bacteria Bacillus monlinensis with strain BL4-6 and AZ20 had similarity to the bacterium Bacillus toyonensis with strain MCCC 1A00365 BCT-7112. Three of the 10 isolates that had the highest inhibition against pathogens. Isolates AZ2 shovued inhibition zone against Pseudomonas aeruginosa with a diameter of 9.65 mm, AZ6 shovued inhibition zone against Escherichia coli bacteria with a diameter of 5.18 mm, and AZ20 shovued inhibition zone against Vibrio alginolyticus bacteria with a diameter of 4, 01 mm.
SENSITIVITY TEST OF VIBRIO sp BACTERIA ISOLATED FROM DUMAI SEA WATERS TO ANTIBIOTICS (CIPROFLOXACIN, ERYTROMYCIN AND STREPTOMYCIN) Fitri, Febi Anisa; Feliatra, Feliatra; Yoswati, Dessy
Asian Journal of Aquatic Sciences Vol 3 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.2.189-192

Abstract

The research was conducted from Feb until April 2019. The purpose of this study was to examine the resistance of Vibrio sp bacteria toward antibiotics (ciprofloxacin, streptomycin and erythromycin) isolated from Dumai sea waters. The spread of Vibrio sp bacteria has been found in sea waters, Vibrio sp bacteria have been found on the surface of faecal contaminated water and the existence of the population is related to organic waste disposal. Antibiotic susceptibility test was performed using Kirby-Bauer method. Resistance test showed that isolated V2, V9, V11, V13, V19, V23, V24 dan V28 were resistant to antibiotic ciprofloxacin, streptomycin and erythromycin with inhibitory zones ranging from 7,1 to 31,7 mm. . Isolated V2 and V9 are resistant to erythromycin, isolated V11, V13, V19, V23 and V28 are resistant to streptomycin and isolated V24 is resistant to ciprofloxacin.

Page 1 of 1 | Total Record : 10