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Nur Arifin
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Gedung LPPM Universitas Riau, Kampus Bina Widya, Jl. H.R. Soebrantas Km 12.5, Panam. Pekanbaru, Riau - 28293. Indonesia
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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).
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Articles 40 Documents
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Search results for , issue "Vol. 5 No. 3 (2022): December" : 40 Documents clear
DECOMPOSITION RATE OF Sonneratia alba MANGROVE LEAF LITTERS IN THE COASTAL AREA, KARIMUN REGENCY KEPULAUAN RIAU PROVINCE Rizki, Sofia Wanda; Tanjung, Afrizal; Nurrachmi, Irvina
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Mangroves are plants that have an important role in providing very complex and potential food components for the life of various things at there and terrestrial biota. Mangrove's high productivity is obtained from litter. This study aims to determine the rate of litter decomposition and the percentage of the leaf decomposition of Sonneratia alba mangroves in the Coastal area. This research was conducted from August to September 2021. The method used in this study was an experimental method, where mangrove leaf fall was taken and observed the decomposition rate of S.alba mangrove leaf litter in the field for 28 days, and then dried the mangrove leaf. S.alba at the Marine Chemistry Laboratory, Faculty of Fisheries and Marine, Universitas Riau. Based on observations, it can be seen that the average temperature value ranges from 29.7 to 30.7˚C. The temperature at station I is relatively low compared to the other two stations. The measurement of the degree of acidity (pH) obtained the same results at each station, namely 7. For the measurement of salinity, the average obtained ranged from 34.3-35 ppt. The highest salinity known to be at station III is 35 ppt. In the measurement of Dissolved Oxygen (DO) the average value was obtained, which ranged from 4.60-5.89 mg/l. The decomposition process of S.alba leaf dregs which was carried out for 28 days showed that of rate of decomposition of S.alba mangrove leaf litter between stations, the highest rate of decomposition, is at station II an average of 3.92 g/day with a percentage of decomposition. 81.9% while at station III the average decomposition rate obtained was 3.35 g/day with a decomposition percentage of 75.8% and at station I is the station with the lowest rate of decomposition, which has an average of 3.25 g/day with a decomposition percentage of 67.0%.
ANALYSIS OF MICROPLASTIC CONTENT IN SEAWATER AT PADANG AND PARIAMAN TOURISM BEACHES, WEST SUMATRA PROVINCE Fikri, Ishlahul; Nedi, Syahril; Elizal, Elizal
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Coastal and marine areas have the potential for anthropogenic pollution. Solid waste, especially plastic, is a pollutant that contributes greatly to polluting coastal areas. Plastic will degrade into small sizes known as microplastics. The purpose of this study was to determine the content of microplastics in the Padang and Pariaman Coastal Waters, West Sumatra. This research was conducted in November 2021 in the seawaters of Padang Wisata Beach (Air Manis Beach and Muaro Lasak Beach) and Pariaman Beach (Kata Beach and Gandoriah Beach) of West Sumatra Province. Based on the results of the study, four types of microplastics were found, namely fiber, film, fragments, and granules. The type of fragment is the dominant type found, followed by the type of film, fiber and granules. Microplastic abundance at Air Manis Beach ranged from 616.67-2196.97 particles/m3, Muaro Lasak Beach 916.67-2396.67 particles/m3, Kata Beach 320.00-1190.00 particles/m3, and Gandoriah Beach 550, 00-1363.33 particles/m3. In general, at Padang Beach and Pariaman Beach by type, microplastic fragments were the most common type found with a percentage of 53%. The type of film is the second most common type (32%), followed by the type of fiber (11%) and the type of grain (4%). Microplastics were distributed in seawater at Padang Beach and Pariaman Beach with different abundances.
THE ROLE OF MYOFIBRILS IN THE FORMATION OF GEL OF SURIMI GIANT TREVALLY (Caranx sp) Kaliky, Nurainy
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Giant trevally (Caranx sp) is one type of by-catch fish that is often thrown back into the sea. To increase the economic value of this fish, one of the alternatives is making surimi. This study aims to study the effect of inhibition of softening gel (Modori) of surimi by egg white protein with various concentrations. The method used is an experiment with 2 treatments, namely the addition of egg white protein (A) with a concentration of ; A1 = 1%, A2 = 2% and A3 = 3% and the gelling temperature (B) is 45ºs C for 20 minutes - 85º C for 15 minutes. Completely Randomized Design (CRD) was used to analyze the data with two replications and continued Analysis of diversity (ANOVA). The parameters analyzed in this study include objective parameters, namely water content, protein content and subjective parameters of color, folding test and texture. The results showed that water content, color, texture and folding test increased while protein content decreased.
MANGROVE ECOSYSTEM MANAGEMENT STRATEGY FOR TUNDA ISLAND, BANTEN PROVINCE Alfiani, Titin; Choesin, Devi Nandita; Sofiatin, Sofiatin
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Mangrove ecosystems protect small islands and provide economic and social benefits to the community. Among the small islands in Indonesia with mangroves at its shorelines is Tunda Island, located in Serang District, Banten Province. However, various threats, such as shipping industrial waste and climate change, have caused the mangroves of Tunda Island to decline. This study aims to describe the condition of mangroves on Tunda Island, assess the local community's perception level of mangrove management, and formulate a strategy for managing the mangrove ecosystem on this island. This research was conducted on Tunda Island, Banten Province in January 2022. Mangrove ecological data were collected at four stations using purposive sampling, and questionnaires were distributed to collect community social data from 95 respondents. Mangrove health was analyzed using the Mangrove Health Index (MHI), while community social data were analyzed using the Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis and the Quantitative Strategic Planning Matrix (QSPM). Results showed that the mangroves fall into the category of poor, with an MHI of 14.75% on the north side; poor with 17.16% on the west side; moderate with 51.07% on the south side; and moderate with 65.89% on the east side of the island. The level of community perception of Tunda Island mangrove management is 60.66%, which implies a positive perception, and that the people of Tunda Island have an adequate understanding of the role of the mangrove ecosystem. The priority management strategy is to empower the community in the accelerated program to rehabilitate sustainable mangrove ecosystems by providing equal opportunities and rights for the community.
KIDNEY AND LIVER HISTOPATHOLOGY OF STRIPED CATFISH (Pangasianodon hypophthalmus) INFECTED WITH Edwardsiella tarda Siburian, Melin; Syawal, Henni; Riauwaty , Morina
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in April – June 2021in the Laboratory of Parasites and Fish Diseases, Faculty of Fisheries and Marine, Universitas Riau. Histological preparations were carried out at the Bukittinggi Veterinary Center (BVet). The aim of this study was to analyze the kidney structure of striped catfish (P.hypophthalmus) infected with Edwardsiella tarda with different bacterial densities. The benefit of this research is to provide information about changes in the structure of kidney tissue due to infection with E.tarda, so that later treatment solutions can be sought. The method used was an experimental method with a completely randomized design (CRD) consisting of 4 treatment levels and 3 replications. The treatments applied were P0 (fish not infected with E.tarda), P1 (fish infected with E.tarda at a density of 106 CFU/mL), P2 (107 CFU/mL), and P3 (108 CFU/mL). Striped catfish (P.hypophthalmus) used are 8-12 cm in size with a density of 1 fish/3 L. Infection is done by injection in the intraperitoneal as much as 0.1 mL/fish. The results of the study found that clinical symptoms caused by dull and protruding eyes, dull body surface color, flaky fins, body surface wounds, and bleeding. In histopathological observation, the kidneys with different bacterial densities experienced the highest damage at P3 (108 CFU/mL), namely necrosis, hemorrhage, and hypertrophy.
IN SILICO STUDY OF TRITERPENOID IDENTIFIED FROM Ceriops decandra LEAVES AS INHIBITORS OF α-AMYLASE Puspitasari, Yunita Eka; Tambunan, Jeny Ernawati; Hardoko, Hardoko
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

α-amylase has a pivotal role in catalyzing the cleavage of α-1,4-glycosidic bonds of polysaccharides to produce oligosaccharides. The inhibition of α-amylase delays the breakdown of carbohydrates, causing a reduction of blood glucose levels absorption in diabetes patients. The exploration of α-amylase inhibitors has attracted because society assumed that utilizing herbal medicine reduced the side effect of prescribed drugs. Mangrove from genus Ceriops have been used as antidiabetic, but the mechanism as α-amylase inhibitors has not been reported. Consumption of leaves extract of C.decandra reduced blood glucose level in diabetic rats, and triterpenoids have been identified from the leaves. With this in mind, this study aims to predict the molecular interactions between α-amylase (PDB ID: 4GQR) and the inhibitors, triterpenoid identified in C.decandra leaves, and to evaluate the potency of triterpenoid as α-amylase inhibitor. There are five triterpenoids identified in C.decandra leaves used as ligand tests, including lupenone, betulin, betulonic acid, betulinic acid, and lupeol. The descriptive method was applied in this investigation. This study was carried out from June to September 2022. Based on the molecular interactions, the binding affinity of triterpenoids was lower than the native ligand and control ligand. Lupenone, lupeol, betalonic acid, and betulinic acid inhibited α-amylase activity by non-competitive inhibition. It was predicted that betulin inhibited α-amylase activity through competitive inhibition.
ANALYSIS OF THE INFLUENCE OF SHIP SCHEDULING, GUIDELINE SERVICES, WEATHER, AND LOADING EQUIPMENT READINESS ON SHIP WAITING TIME IN PORT Nawawi, Cholis Imam; Anwar, Syairi; Supriatiningsih, Tuti; Purnaningratri, Indah
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The purpose of this study was to determine the effect of ship scheduling factors, guide service, weather, and the readiness of loading and unloading equipment on the ship‘s waiting time at the port. This type of research is descriptive and quantitative, conducting field research through observation and interviews to obtain research data. This research was conducted on officers at the port of Merak. The sampling technique in this study was random sampling, with a sample size of 100 ship officers at the Merak port. The results showed that ship scheduling had a significant positive effect on ship waiting time, guide services had a significant positive effect on ship waiting time, the weather had a significant positive effect on ship waiting time.
IDENTIFICATION OF LACTIC ACID BACTERIA (BAL) FROM THE INTESTINES OF Pangasianodon hypophthalmus THAT WAS FEEDED BY FERMENTED HERBAL AND THE ABILITY TO INHIBIT Aeromonas hydrophila BACTERIA mASTUTI, Rini; Syawal, Henni; Luskityowati, Iesje
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Lactic acid bacteria can improve digestibility because they can be absorbed directly by the body. The purpose of this research was to obtain lactic acid bacteria types from the intestines of striped catfish (Pangasionodon hypophthalmus) that had been fed fermented herbal feed. This research was conducted from June 2019 to April 2020. The treatment used in this research was with different doses and stocking densities. The test was carried out using the disc diffusion method or the Kirby-Bauer method, which was done by measuring the inhibition zone around the paper disc. Identification of LAB was carried out by phenotypic and genotypic. The results showed that as many as four of the selected isolates were able to inhibit the growth activity of the pathogenic bacteria Aeromonas hydrophila. Isolates with code K had an inhibition zone of 6.7 mm against A.hydrophila, an inhibition zone of 7.5 mm for P1D2 isolates, P2D1 isolates had an inhibition zone of 7.0 mm, P2D2 isolates had an inhibition zone of 7.8 mm. Types of LAB that were identified phenotypically and genotypically include Lactobacillus casei, L.plantarum, and L. acidhopilus
DIFFERENT FEEDING TIME PERIOD TO INCREASE GROWTH AND SURVIVAL RATE OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus VALENCINNES, 1840) Ikbal, Muhamad; Sukendi, Sukendi; Asiah, Nur
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was carried out in November-December 2021 at the Fish Hatchery and Breeding Laboratory, Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Riau. The purpose of this study was to determine the period and the best type of feed on the growth and survival rate of Asian redtail catfish. The method used Completely Randomized Design (CRD) with 4 levels of treatment, namely P1 (Artemia sp at the age of 4-12 days, Kutu air 13-19 days, and Tubifex sp 20-35 days), P2 (Artemia sp 4-10 days, Kutu air 11–15 days, and Tubifex sp 16–35 days), P3 (Artemia sp 4–12 days, kutu air 13–19 days, and artificial feed 20–35 days), and P4 (Artemia sp 4–10 days, kutu air 11–15 days, and artificial feed 16–35 days). Asian redtail catfish larvae that had run out of egg yolks were put into rearing containers with a density of 3 fish/L and reared for 35 days. Parameters measured in this study were absolute weight growth, absolute length growth, specific growth rate (LPS), survival rate (SR), and water quality. The results showed that the different feeding periods had a significant effect (P<0.05) on the growth and survival of Asian redtail catfish larvae. Treatment with Artemia sp at the age of 4-10 days, kutu air 11–15 days, and Tubifex sp. 16–35 days resulted in an absolute weight growth of 1.06 g, an absolute length growth of 4.23 cm, a specific growth rate of 11.94% and a survival rate of 84.44%. The water quality parameters during the study were temperature 26.4-27.5oC, pH 5.2-6.5 and dissolved oxygen 3.6-4.67 ppm.
ANALYSIS OF PLANNING STUDY AND DEVELOPMENT OF INDIVIDUAL TRANSFERABLE QUOTA SYSTEM (ITQ) IN REALIZING QUOTA-BASED SUSTAINABLE FISHERIES Ramadian, Afzil; Sutyawan, Fery; Sara, La
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Fish exploitation in Indonesia is already at a very alarming level. Catching at full capacity and even excess occurs in almost all fisheries management areas. One of the foreign government's efforts to overcome similar problems is by conducting ITQ. This research approach uses qualitative descriptive qualitative specifications. Data analysis techniques miles and huberman data triangulation: reduction, data presentation, verification carried out to find out the analysis of planning studies and the development of the Individual Transferable Quota (ITQ) system in realizing quota-based sustainable fisheries. This activity was carried out in collaboration with the grow fisheries training program and the university of Akureyri. The training was held from 19 - 28 May 2022 at the Marine and Freshwater Research Institute building and the University of Akureyri. The conclusion of this study is that the condition of the Indonesian seas, which is starting to deteriorate due to excessive and illegal fishing, requires firm action. It is hoped that the ITQ system can be implemented in Indonesia. So that when fishing is not done excessively.

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