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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).
Arjuna Subject : -
Articles 524 Documents
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THE EFFECT OF TURMERIC POWDER ADDITION TOWARD GROWTH AND SURVIVAL RATE OF Cyprinus carpio Simbolon, Mastiur Afridayanti; Windarti, Windarti; Sarumaha, Herman
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

Turmeric (Curcuma longa Linn.) is one of the natural sources that can be used to improve the appetizer of fish and this improve the growth of that fish. Research aimed to understand the growth and survival of C.carpio fed with turmeric-enriched pellets was conducted from March to May 2022. There were 4 different dosages of turmeric powder applied, namely T0 (Control), T1 (0.5 g/kg), T2 (1 g/kg), and T3 (1,5 g/kg). The fish was reared in a 25 L container completed with an aerator and filter. The density of fish was 15 fish/container, around 3 g BW and 6 cm TL. The fish was fed ad-satiation, 3 times/day and was reared for 49 days. Sampling was conducted once a week. Results showed that the survival rate of fish in all treatments was good, more than 95 %. The best growth was obtained in T3, as the fish achieved 6.29 g BW and 7.61 cm TL. While the fish of other treatments were lower, they were T0 (4.60 g; 6.72 cm), T1 (4.73 g; 6.85 cm), and T2 (4.99 g; 7.03 cm). The best FCR was also found in T3 (1.37) and the FCR of other treatments were T0 (2.28), T1 (2.10) and T2 (1.97) respectively. Data obtained indicate that the addition of turmeric powder improves the growth as well as the FCR of C.carpio.
ANALYSIS OF LIVING STAGES OF TRADITIONAL FISHERMEN IN BELANG DISTRICT SOUTHEAST MINAHASA Laside, Iftitah Khairunnisa; Suhaeni, Siti; Luasunaung, Alfret
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 purposive of this study, namely to find out how much and what are the sources of income for traditional fishermen's families in Belang District, and the expenses of traditional fishermen's families in Belang District. The Method used in this research is a survey method. The populations in this study are traditional fishermen in Belang District. The sampling method is using a quataed Multi-Stages Purposive Sampling, with the number of sample villages being 15 villages and the sample fishermen taken are fishermen with fishing rods and nets as much as 10% of the total population in each sample village. The data analysis used is descriptive qualitative and quantitative analysis. The standard of living of traditional fishing families is analyzed using the Engel index. Based on the results of the analysis, it is known that the income of traditional fishermen's families in Belang District comes from their main job as fishermen, side jobs outside the field of fisheries. The total incomes of traditional fishermen's families in Belang District on average for one year is Rp.53.394.000. There are two types of expenditures for traditional fishermen's families in Belang District, namely expenditures for food and expenditures for non-food such as clothing, housing, health, education, electricity, transportation and others. The total average expenditure for one year is Rp. 53.394.000, which is divided into expenditures for food needs of Rp. 32.284.500 and expenditures for non-food needs, which are Rp. 21.109.500. The results of the analysis of the Engel index are 60.46%, used to meet food needs only. The proportion for food, which is 39.54%. This is indicates that the standard of living of traditional fishermen in Belang District is still relatively low because more than half of their income is only sufficient to meet food needs.
RELATIONSHIP BETWEEN SEDIMENT TEXTURE AND ABUNDANCE OF Telescopium telescopium IN THE MANGROVE ECOSYSTEM OF THE NYALO RIVER, PESISIR SELATAN, WEST SUMATRA Armani, Shanya Puthi; Tanjung, Afrizal; 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

The research was conducted in October-November 2021 in the Nyalo River Mangrove Ecosystem, South Coast of West Sumatra, aiming to determine the characteristics of sediment texture, an abundance of Telescopium snails (Telescopium telescopium), and the relationship between sediment particle size. The abundance of mangrove snail populations. Habitat parameters measured include physical and chemical parameters of marine waters. Station determination using purposive sampling method. Sampling locations are divided into 3 collection points or stations that are considered to represent the study area with one transect at each station. Mangrove snails were sampled using a 3m x 3m plot with three subplots placed along the transect. The results showed that the type of substrate varied at each station. The average size ranges from 3.58 – 2.05 with very fine sand classification dominating. The abundance of the mangrove snail population ranged from 1.78–14.89 ind/m2. The correlation between sediment particle size and the abundance of mangrove snail populations is related but not closely related.
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.
KIDNEY AND LIVER HISTOPATHOLOGY OF STRIPED CATFISH (Pangasianodon hypophthalmus) INFECTED WITH Edwardsiella tarda Siburian, Melin; Syawal, Henni; Siregar, Morina Riauwaty
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
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; Lukistyowati, 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.

Page 49 of 53 | Total Record : 524

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