cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
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,
Agriculture, Biological Sciences & Forestry
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 543 Documents
 31   32   33   34   35 
MINERAL CONTENT PROFILE OF CARAPACE FLOUR, CHITIN, AND CHITOSAN SLIPPER LOBSTER (Thenus orientalis) Putra, Harifa Syah; Hasan, Bustari; Karnila, Rahman; Ghazali, Tengku Muhammad
Asian Journal of Aquatic Sciences Vol. 7 No. 2 (2024): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.2.192-199

Abstract

Slipper lobster live on the bottom of sandy and muddy waters at a depth of 10-200 m and are found throughout Indonesian waters. The carapace is the most significant part of its body, of which approximately 50% is a source of waste, but it can be utilized as functional food in the form of chitin and chitosan. One of the determinations of chitin and chitosan quality depends on the demineralization process. The potential of this shrimp has not been fully utilized due to the lack of information on mineral content after the demineralization process. This study aims to obtain information on flour, chitin, and chitosan mineral content. This research used a descriptive method. The parameters observed were yield, water, ash, and mineral content (K, Mg, Ca, Na, Fe, and P). The results showed that slipper lobster weighed about 80-240 g with a length of 15-25 cm with the yield and mineral content of flour, chitin and chitosan of slipper lobster carapace as follows: yield 29.04%, 41.02%, 33.42%, water 2.36%, 3.96%, 3.25%, ash 52.89%, 8.27%, 3.16%, potassium 55.73 mg/L, 9.09 mg/L, 4.55 mg/L, magnesium 37.23 mg/L, 5.59 mg/L, 5.95 mg/L, calcium 766.87 mg/L, 137.62 mg/L, 126.91 mg/L, sodium 146.62 mg/L, 17.82 mg/L, 10.73 mg/L, iron 12.82 mg/L, 1.89 mg/L, 1.72 mg/L, phosphorus 0.17 mg/L, 0.06 mg/L, 0.05 mg/L.
PASTA FEED ENRICHMENT FERMENTED WITH MESENTERIC PARTS OF PANGASIUS ON THE GROWTH AND SURVIVAL OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus) LARVAE Manik, Yesi Sartika Br; Aryani, Netti; Heltonika, Benny
Asian Journal of Aquatic Sciences Vol. 7 No. 3 (2024): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.3.432-441

Abstract

Pasta feed is an alternative replacement feed naturally occurring in cultivating Asian redtail catfish (Hemibagrus nemurus) larvae. However, pasta feed is not yet able to completely replace the Tubifex sp, and enrichment feed pasta with oils from mesenteric waste catfish is expected to improve the performance of pasta feed. This research aimed to determine the effect of enriching fermented pasta feed with waste oil from the mesenteric parts of catfish on the growth and survival of Asian redtail catfish larvae. This research used an experimental method with the design used, a Completely Randomized Design (CRD), one factor, and five treatments with three replications. This research was carried out from March to April 2024 at the Fish Hatchery and Breeding Laboratory, Fisheries and Marine Science Faculty, Universitas Riau. The research results show the influence of enrichment of fermented pasta feed with pangasius mesenteric fish oil on the growth and survival of Asian redtail catfish larvae. Given larvae feed fermented paste + fish oil from pangasius mesenteric waste 12 % produce growth and survival highest with an absolute weight of 1.63 g, absolute length of 5.33 cm, specific growth rate of 14.73%/day, survival of 84.44%, type A cannibalism index of 13.77%, and normal mortality of 1.77%. Water quality parameters such as water temperature range from 27-28.9 °C, pH ranges from 5-7, and DO ranges from 5.1-8.1 mg/L.
RELATIONSHIP BETWEEN SEDIMENT ORGANIC MATERIAL CONTENT WITH THE ABUNDANCE OF Cerithidea obtuse IN THE INTERTIDAL ZONE, BUKIT BATU DISTRICT, BENGKALIS REGENCY, RIAU Parapat, Monica Esra; Nasution, Syafruddin; Zulkifli, Zulkifli
Asian Journal of Aquatic Sciences Vol. 7 No. 3 (2024): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.3.442-449

Abstract

This study was carried out in March-April 2024 in the intertidal zone of Bukit Batu District, Bengkalis Regency, Riau Province, with the aim of knowing the size distribution and the relationship between sediment organic matter content and the abundance of C. obtusa. This research uses a survey method by determining sampling stations using purposive sampling consisting of three stations. Each station has three transects consisting of plots measuring 3 m2. To determine differences in abundance, the Kruskal Wallis test was carried out and to determine the relationship between sediment organic matter content and the abundance of C. obtusa, statistical correlation and linear regression tests were carried out. The results showed that the organic matter content of the sediment is included in the medium-high category, ranging from 15.82%-22.27%. The abundance of C. obtusa ranged between 5.12−6.96 ind/m2. There were differences in the abundance of C. obtusa among stations, with details between stations 3 and 1 and stations 3 and 2 being significant, while between stations 1 and 2 it was not significant. There were no differences in the abundance of C. obtusa among intertidal subzones. The distribution of C. obtusa is clustered with a dominant size of 20.7−34.5 mm. There is a moderate relationship between sediment organic matter content and the abundance of C. obtusa with a correlation coefficient (r) of 0.4743 and interpreted in the equation Y = -0,0009 + 0,2775X
ANALYSIS OF TOTAL OIL CONTENT IN THE MARINE WATERS OF DUMAI CITY Hisbullah, Ali Akbar; Nedi, Syahril; Yoswaty, Dessy
Asian Journal of Aquatic Sciences Vol. 7 No. 3 (2024): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.3.450-455

Abstract

The Dumai City area is one of the regions currently designated as an industrial zone, a transportation route, and a busy international port. This situation puts significant pressure on the marine waters of Dumai City due to the waste produced. The primary source of marine pollution comes from oil spills, whether from ship operations, offshore drilling, or ship accidents. Pollution from oil spills in the ocean is a significant source of marine contamination that has consistently been a focus of public attention. This study aims to analyze the total oil content, Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), and Total Organic Matter (TOM), as well as the effect of total oil content on DO, BOD, and TOM. The survey method used in this research involves collecting data from DO, BOD, TOM, and oil content measurements. The total oil content in Dumai City waters ranges from 0.14485 – 0.30214 ppm. The total oil content below the threshold still supports aquatic biota and does not damage the ecosystem. The DO content in Dumai waters ranges from 3.6 to 6.8 mg/L, and some measurements are below the threshold required to support marine biota. The BOD content of Dumai waters ranges from 10 to 11.3 mg/L, meaning that biological activity is still within optimal limits. The TOM content ranges from 17.38 – 35.22 mg/L, which does not support the life of aquatic biota, and there is potential for organic material pollution
ANALYSIS AND STRATEGY TO INCREASE THE INCOME OF TRADITIONAL SALAM NET FISHERMAN IN CENTRAL TAPANULI Harahap, Mutiara Alkayakni; Harjuni, Fiki; Audina, Nur
Asian Journal of Aquatic Sciences Vol. 7 No. 3 (2024): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.3.456-461

Abstract

Central Tapanuli Regency, Andam Dewi District, is an area that has a large water potential area. In this area, many fishing activities are carried out. Based on data on the number of fishermen in the Central Tapanuli area, the number of traditional fishermen in the Andam Dewi area is 1510 fishermen, and the type of fishing gear often used is the salam net. Dependence on using laurel net fishing equipment does not guarantee that fishermen get abundant catches and stable economic income. This research used purposive sampling using 35 salam fishing nets. This research aims to determine the level of welfare of fishermen based on the five livelihood capital approaches, namely natural capital, human capital, physical capital, financial capital, and social capital. The results of this research show the ability of fishermen to access fishing areas in the waters using 23% natural capital, 32% human capital, 18% physical capital, 9% financial capital, and 18% social capital
SCREENING THE ANTIBACTERIAL POTENTIAL OF Avicennia marina MANGROVE LEAF EXTRACT AS A NATURAL ANTIBIOTIC INGREDIENT Sibarani, Michael Parluhutan Jupiter; Effendi, Irwan; Yoswaty, Dessy
Asian Journal of Aquatic Sciences Vol. 7 No. 3 (2024): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.3.462-469

Abstract

Bacterial resistance to antibiotics is a global health problem caused by two factors, namely natural resistance and acquired resistance. Several factors can cause problems. The problem in this research is whether Avicennia marina mangrove leaf extract found in the mangrove ecosystem in Bandar Bakau, Pangkalan Sesai Village, Dumai City, can be used as an antibiotic. This research was conducted in January-March 2024. This research aimed to determine the potential of mangrove leaf extract A. marina as an antibiotic against pathogenic bacteria Vibrio sp, Aeromonas sp, and Pseudomonas sp. The results of this research will provide benefits in the form of information regarding the potential of A. marina mangrove leaf extract as an antibiotic. The methods used in this research are survey methods and experimental methods. The samples were then analyzed using the paper disk diffusion method at the Marine Microbiology Laboratory, Faculty of Fisheries and Marine Science, Universitas Riau. The data obtained is then presented and explained descriptively. The research results showed that antibiotics added to A. marina leaf extract could inhibit the growth of A.hydrophila bacteria based on the inhibition zone formed of 11mm. A.marina contains alkaloids, terpenoids, and flavonoids and has antibacterial properties against A.hydrophila bacteria. Based on the data, it can be concluded that A.marina leaf extract can be used against pathogenic bacteria
TECHNOLOGY FOR UTILIZING BY-PRODUCTS OF PROCESSED STRIPED CATFISH (Pangasianodon hypophthalmus) AS FOOD RAW MATERIALS Diana, Ayu; Syahrul, Syahrul; Fikri, M. Zakiyul
Asian Journal of Aquatic Sciences Vol. 7 No. 3 (2024): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.3.470-476

Abstract

Striped catfish (Pangasianodon hypopthalmus) is well known in Asia, specifically in Southeast Asia, such as Vietnam, Thailand, Indonesia, Malaysia, Cambodia, Burma, and Brunei Darussalam. Currently, catfish have been exported to almost all countries in the world. This study aims to analyze the chemical composition of processed catfish by-products and find alternatives for their economic utilization. The research method used is the experimental method, namely conducting experiments on using processed by-products of catfish as food raw materials. Furthermore, quality analysis was performed on processed by-products and raw food materials, namely proximate analysis and amino acid profile. Proximate analysis of processed catfish by-products (meat attached to bones, belly fat, fish bones, and offal) includes protein, fat, water content, carbohydrates, and amino acids. These by-products are still classified as functional. Therefore, this research utilizes these by-products in food raw materials. The chemical analysis (proximate) results of the products produced showed numbers that meet SNI quality standards as food products. By-products of catfish processing (fillets and smoked catfish) can be utilized as food raw materials in the form of fish concentrate flour, fish bone meal, and fish oil
CONDITION OF THE MANGROVE FOREST AT UNIVERSITAS RIAU MARINE STATION, DUMAI Siregar, Rifa Ghina Aulia; Efriyeldi, Efriyeldi; Mulyadi, Aras
Asian Journal of Aquatic Sciences Vol. 7 No. 2 (2024): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.2.200-207

Abstract

Mangrove plant communities grow well in tropical regions and adapt to extreme environmental conditions. The coastal area of Dumai is filled with various activities in the form of industry, ports, agriculture, and settlements. The complexity of activities on the beach greatly affects the balance of the ecosystem. This study aimed to determine the composition of mangrove forest species and conditions based on density value, importance index, percentage of canopy cover, and mangrove stand height. The survey method used in this study, where the data collected is primary data. There are four species of mangroves, including Rhizophora apiculata, Bruguiera gymnorriza, Xylocarpus granatum, and Sonneratia alba. The density of mangroves is in good condition, with dense densities ranging from 2067-3266.67 ind/ha. Canopy closure in good condition ranges from 76.12-80.45%. The highest important value index is R. apiculata, with a value of 159.64%, and the lowest is B. gymnorriza, 13.77%. The highest stand was S. alba, with a value of 18.84 m, and the lowest was X. granatum, with a value of 10.60 m.
IDENTIFICATION OF TYPES AND ABUNDANCE OF MICROPLASTICS IN BEACH SEDIMENTS IN PADANG CITY, WEST SUMATRA Fitri, Sabrina Nur; Amin, Bintal; Yoswaty, Des
Asian Journal of Aquatic Sciences Vol. 7 No. 2 (2024): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.2.208-215

Abstract

The presence of plastic waste in the ocean significantly impacts pollution. Lightweight plastic is transported by currents and waves, eventually accumulating in sediment. Its slow decomposition is influenced by composition and environmental conditions. Using a survey method at three stations in Padang City’s coastal waters, this study aims to investigate the composition and quantity of microplastics in sediment. Variations in microplastic levels across stations were analyzed using One-Way ANOVA, and differences between dry and wet zones and depths of 0-10 cm and 10-20 cm were examined with Independent Samples T-tests. Three microplastic categories were identified: fibers, fragments, and films, with an average concentration of 100.55 particles/kg. The Ulak Karang Beach estuary exhibited the highest particle concentration (129.16 particles/kg), whereas Banana Beach, characterized by minimal human activity, displayed the lowest concentration. There were significant differences (p<0.05) in the abundance of microplastics between stations. It was observed that the dry zone exhibited a higher concentration of particles (125.00 particles/kg) in contrast to the wet zone (76.66 particles/kg). In the 0-10 cm depth range, there was a higher abundance of microplastics (111.66 particles/kg) compared to the 10-20 cm depth range (89.44 particles/kg). The abundance of microplastics was significantly different (p<0.05) between the two coastal zones but not significantly different (p>0.05) between depths. Several possible causes of these differences were examined, but further research is needed to investigate other oceanographic factors and gain a more comprehensive understanding
VERTICAL DIVERSITY OF EPIPHYTIC DIATOMS ON STEMS OF Rhizophora sp AND FRONDS OF Nypa sp IN KUNDUR WATERS KARIMUN REGENCY, RIAU ISLANDS PROVINCE Rini, Yulia Sapta; Efriyeldi, Efriyeldi; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol. 7 No. 2 (2024): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.2.216-225

Abstract

This study was conducted in the waters of Kundur Island, Karimun Regency, Riau Islands Province, to assess the type, abundance, and diversity of epiphytic diatoms on Rhizophora sp stems and Nypa sp fronds using a survey method and purposive sampling for station selection. One-way ANOVA, LSD tests, and the Independent Samples T-test were employed for data analysis. The research identified 11 species of epiphytic diatoms: 9 from the Bacillariophyceae class (including Navicula sp, Pleurosigma sp, Pinnularia sp, and Skeletonema costatum); Isthmia sp from the Coscinodiscophycidae class, and Chaetoceros sp from the Bacillariophyceae class. The results indicated a higher abundance of diatoms on Nypa sp fronds (17,822.94 ind/cm²) than on Rhizophora sp stems (13,884.16 ind/cm²). Significant differences in diatom abundance were observed between stations on Rhizophora sp. stems, particularly between stations II and III. In contrast, no significant differences were found between stations I and II or stations I and III. No significant differences in diatom abundance were observed between stations on Nypa sp fronds. The T-test results revealed significant vertical differences in diatom abundance between Rhizophora sp stems and Nypa sp fronds. Overall, the diversity of epiphytic diatoms was categorized as medium on both Rhizophora sp stems and Nypa sp fronds in the waters of Kundur Island, Karimun Regency, Riau Islands Province. This study contributes valuable insights into the ecological dynamics of epiphytic diatoms in mangrove and nipa palm habitats.

Page 33 of 55 | Total Record : 543

 31   32   33   34   35 

Filter by Year

2018 2025


Reset
Filter By Issues
All Issue Vol. 8 No. 3 (2025): December Vol. 8 No. 2 (2025): August Vol. 8 No. 1 (2025): April Vol. 7 No. 3 (2024): December Vol. 7 No. 2 (2024): August Vol 7 No 2 (2024): August Vol. 7 No. 1 (2024): April Vol 6 No 1 (2023): April 2023 Vol. 6 No. 3 (2023): December Vol. 6 No. 2 (2023): August Vol 6 No 2 (2023): August Vol. 6 No. 1 (2023): April Vol 5 No 2 (2022): August 2022 Vol 5 No 1 (2022): April 2022 Vol 5 No 3 (2022): December Vol. 5 No. 3 (2022): December Vol. 5 No. 2 (2022): August Vol. 5 No. 1 (2022): April Vol 4 No 2 (2021): Agustus 2021 Vol 4 No 3 (2021): December Vol. 4 No. 3 (2021): December Vol. 4 No. 2 (2021): August Vol. 4 No. 1 (2021): April Vol. 3 No. 3 (2020): December Vol. 3 No. 2 (2020): August Vol. 3 No. 1 (2020): April Vol. 2 No. 3 (2019): December Vol. 2 No. 2 (2019): August Vol. 2 No. 1 (2019): April Vol. 1 No. 1 (2018): December More Issue