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Nur Arifin
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arifinik013@gmail.com
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ajoas@ejournal.unri.ac.id
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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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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
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THE RELATIONSHIP BETWEEN NITRATE, PHOSPHATE AND ORGANIC MATERIAL CONCENTRATION TO PHYTOPLANKTON ABUNDANCE IN RUPAT ISLAND WATERS Tanjung, Doli Juni Setia; Amin, Bintal; Mubarak, Mubarak
Asian Journal of Aquatic Sciences Vol. 6 No. 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Over time, Rupat Island has experienced very rapid development, marked by variousactivities such as plantations, agriculture, farming, and ecotourism activities which aregrowing rapidly. This study aims to determine the relationship between concentrations ofnitrate, phosphate, and organic matter on the abundance of phytoplankton in Rupat Islandwaters. The results showed that the average nitrate concentration was relatively high, rangingfrom 0.0993-0.1618 mg/L and the average phosphate concentration was around 0.0951-0.1571 mg/L. Furthermore, the concentration of organic matter in water ranged from 27.555-35.234 mg/L. The lowest abundance of phytoplankton was found in the Station II area with anaverage abundance value of around 416.67 cells/L, while the highest average abundance wasin the Station V area with an average value of 993.05 cells/L. The relationship between thecontent of nitrate, phosphate, and organic matter with the abundance of phytoplankton in theRupat Island area was insignificant or weak with a coefficient of determination (R2) of 8%,10.5% and 3.3%.
ACUTE TOXICITY WATER EXTRACT OF Meretrix meretrix Linnaeus IN VIVO ON SPRAGUE DAWLEY RATS Apriandi, Azwin; Tarman, Kustiariyah; Sugita, Purwantiningsih
Asian Journal of Aquatic Sciences Vol. 4 No. 3 (2021): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Meretrix meretrix empirically has been widely believed by the public to a wide variety of health benefits. It is necessary to do an analysis of the level of toxicity of Meretrix meretrix extract. The experiment was carried out extraction sample with water (1;4) (w/v), analysis of acute toxicity Meretrix meretrix extract with the OECD method 403:2009. Based on the results of water extract of Meretrix meretrix no effect on physical observations of test animals with LD50> 15 g/kg BW. Histopathological observation on the liver and kidneys, there is necrosis of the liver cells and some cell degeneration in the kidneys, but on the whole network under normal conditions appropriate control group.
GILL, KIDNEY, INTESTINE, AND LIVER STRUCTURES OF Pangasianodon hypophthalmus REARED UNDER BIOFLOC SYSTEM AND PHOTOPERIOD MANIPULATION Alfred Nobel Pardede; Windarti Windarti; Efawani Efawani
Asian Journal of Aquatic Sciences Vol 5 No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.5.1.71-80

Abstract

Pangasianodon hypophthalmus is a freshwater fish that can grow well in dark condition. In no light condition, fishes are more responsive to feed provided. However, phytoplankton may not grow well, and as a consequence the water quality was poor and it negatively effects the fish health in general. The combination of biofloc and photoperiod manipulation systems is expected to improve the water quality as well as the fish health. To understand health status of the fish in general, the histological structure gill, kidney and liver was investigated. Sample were fixed in 5% formalin, paraffin processed and Haematoxylin Eosin stained. There were 2 factor, 3 treatment applied, namely natural (control), 18G (18 hours dark), 24G (24 hours dark) and 3 repetition. Parameter measured were survival rate and histological structure of gill, kidney, intestine and liver. Results shown that there are not difference of histological structure of the organs of fish reared under biofloc and manipulated photoperiod systems. There were light abnormalities in the gill, such as hyperplasia, hypertrophy, oedema and necrosis. There is no negative effect of biofloc system and photoperiod manipulation in structure of fish organ as there is only light abnormalities that can be cured when the water quality is good.
SUSTAINABILITY OF VANAME SHRIMP (Litopenaeus vannamei) FARMING IN BANTAN DISTRICT BENGKALIS REGENCY, RIAU Hutasuhut, Wilda Rizkiyah; Hendrik, Hendrik; Arief, Hazmi
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.7.3.412-421

Abstract

Bantan district is one of the districts on the coast of Bengkalis Regency, which has great potential to contribute to vaname shrimp production through intensive technology pond-based farming activities. This study aims to assess the sustainability status of vaname shrimp farming in the Bantan District. The data processing and data analysis were performed using Multi-Dimensional Scaling (MDS); the ordination process is performed using the ordination technique called Rapid Appraisal for Shrimp Farm (Rap-SF), which is a modification of Rap-FISH Rapid Appraisal for fisheries (Rapfish) using five dimensions namely ecological, economic, social, institutional, and technological. The research results show the sustainability index of the ecological dimension with a value of 47.27 (less sustainable), the economic dimension with a value of 59.55 (quite sustainable), the social dimension 52.88 (quite sustainable), the institutional dimension 47.10 (less sustainable) and the technological dimension 63.35 (quite sustainable). Technological and economic dimensions have a considerable influence on the sustainability of vaname shrimp farming in the Bantan District
INVENTORY OF SEA CUCUMBER SPECIES (Holothuroidea) IN THE WATERS OF PANDARATAN BEACH SARUDIK DISTRICT, CENTRAL TAPANULI REGENCY, NORTH SUMATRA Panggabean, Iis Apriati; Samiaji, Joko; Efriyeldi, Efriyeldi
Asian Journal of Aquatic Sciences Vol. 4 No. 3 (2021): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Pandaratan Beach is one of the beaches located in Central Tapanuli Regency, North Sumatra. Pandaratan Beach has a diverse potential of biological resources namely mangrove ecosystems, seagrass ecosystems, and coral reef ecosystems. Sea cucumbers are among the potentials in the beach.This research was conducted in February 2021. The purpose of this study is to find out the type, abundance and diversity of sea cucumbers in the waters of Pandaratan Beach. The method used was the survey and for the determination of the observation location was determined by purposive sampling. The results showed that 1 genera and 3 species of sea cucunbers were found, namely Holothuria scabra, Holothuria atra, and Holothuria leucospilota. The abundance of sea cucumbers ranged from 444 – 800 ind/ha.The highest relative abundance was found in the found in the species of Holothuria leucospilota at station I with a percentage of 66.67%. The sea cucumber diversity index ranged from 0.6515 - 1.1955.
HISTOPATHOLOGY OF KIDNEY AND INTESTINE OF TILAPIA (Oreochromis niloticus) FED WITH HERB FERMENTED FEED AFTER CHALLENGE OF Streptococcus agalactiae Al Furqon, Abdullah; Riauwaty, Morina; Luskityowati, Iesje
Asian Journal of Aquatic Sciences Vol. 6 No. 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

The natural ingredients' potential as immunostimulants is a plant Curcuma and Aromatic ginger. This research was conducted from March to June 2022 in 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). This research aimed to know the structure of the Kidneys and Intestines of tilapia by adding herb-fermented feed to prevent Streptococcus agalactiae infection. This research was an experimental method using a Completely Randomized Design (CRD) with 4 treatments and 3 replications. This treatment of the study was; NC (were not immersed and infected), PC (were not immersed in fermented herbs solution but infected of S.agalactiae), T1 (Giving 100 mL/kg fermented herbs), T2 (Giving 125 mL/kg fermented herbs), T3 (Giving 150 mL/kg fermented herbs). The fish used were 6 - 7 cm in size and reared with a stocking density of 1 fish/3 L of water and kept for 46 days. Fish were challenged with S.agalactiae bacteria with a density of 108 CFU/mL at a dose of 0.1 mL/head intramuscularly on day 32, after which the fish were reared again until day 46. Changes that occur in the kidneys of fish are hemorrhage, hypertrophy, and necrosis, while in the intestines there are histological changes in the form of haemorrhage, edema, vacuole degeneration, and necrosis. The results show that the feeding containing the herbal medicine of Curcuma and Aromatic ginger fermented affected the improvement of the histological changes in the kidneys and intestines of tilapia.
ESTIMATION OF CARBON RESERVED IN MANGROVE FOREST OF SUNGAI APIT DISTRICT, SIAK REGENCY, RIAU PROVINCE Dewi, Delviana; Efriyeldi, Efriyeldi; Amin, Bintal
Asian Journal of Aquatic Sciences Vol. 4 No. 3 (2021): 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 forests can absorb and store carbon in large quantities and for a long time, so they can play a role in mitigating climate change. This research was conducted in February 2021 on the Mangrove Ecosystem in the Sungai Bersejarah Mangrove Tourism Area of ​​Kayu Ara Permai Village, aiming to identify species and analyze mangrove density, mangrove biomass and carbon content, CO2 uptake, as well as analyzing the relationship between mangrove density and biomass, carbon stock and CO2 uptake. This study uses a survey method, the measurement of mangrove biomass using the allometric equation method. The results of the highest average mangrove density, potential estimates of carbon stock and CO2 absorption are found on Transect 3 which shows an average mangrove density of 2166.66 ind/ha, mangrove carbon stock 91.9378 tons/ha and CO2 absorption of 336.5667 tons/ha. The largest soil organic carbon was found in transect 3, which was 384.15 tons/ha. Density does not have a strong relationship with biomass, mangrove carbon content and carbon sequestration. Mangrove density between transects showed a significant difference (p<0.05). Biomass, mangrove carbon and CO2 uptake between transects were not significantly different (p>0.05), while the estimated soil organic carbon stock was significantly different (p<0.05) between transects.
THE EFFECT OF TEMPERATURE DIFFERENCES ON HATCHING RATES OF LEKANG TURTLE (Lepidochelys olivacea) EGGS IN SEMI-NATURAL NESTS Ginting, Daniel Paskah; Nasution, Syafruddin; Siregar, Yusni Ikhwan
Asian Journal of Aquatic Sciences Vol. 6 No. 2 (2023): August
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 on August 31, 2021 – December 7, 2021, at the UPTD KPSDKP, West Sumatra Province. The purpose of this study was to determine the effect of temperature differences on incubation time, hatching rate, and survival rate of turtle hatchlings (Lepidochelys olivacea). The method used in this study is an experiment that uses 3 trials plus 1 control, with 3 repetitions. Turtle eggs were incubated with the same depth and number of eggs with the addition of different temperatures from incandescent lamps with different powers. Then proceed with the calculation of incubation time, percentage of hatching, and survival of hatchling. Based on the results of the research, for the calculation of incubation time, the experimental unit with the shortest incubation period was produced by experimental unit B, with a temperature range of 27.5–29.5⁰C, which was 58 days. The incubation period that took the longest was the control experimental unit with an average temperature of 25⁰C, which was 65 days. For the results, the most optimal hatching rate was produced by experimental unit B, with an average hatching rate of 86%. Meanwhile, the lowest hatching rate was obtained from experimental unit C with an average hatching rate of only 53.3%. Then for the survival of the hatchlings after being quarantined for one week, all of them show the number 100%, which means that no hatchlings died during the quarantine.
THE EFFECT OF TOPOGRAPHICAL DIFFERENCES ON THE GROWTH OF KOI CARP (Cyprinus carpio koi) Halimah, Nur; Jailani, Abdul Qadir; Sari, Annisa Novita
Asian Journal of Aquatic Sciences Vol. 6 No. 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Interest in the cultivation of koi carp commodities has increased during the Covid-19 pandemic. Breeders come from various communities. This study aims to determine whether topographic differences have an effect or not on the growth of koi carp. The research was conducted from February to March 2022 for 45 days. The location of the research was carried out in three different places, Kaliangkrik, Tempuran, and Kebumen. The research method used was a Completely Randomized Design (CRD) with 3 treatments and 3 repetitions. The first treatment is an altitude of 1,030 meters above sea level (Kaliangkrik), the second is 323 meters above sea level (Tempuran), and the third is 26 meters above sea level (Kebumen). The data were analyzed using the Analysis of variance (ANOVA) followed by Duncan's Multiple Range Test (DMRT) further tests. The results showed that topographic differences affect the growth of koi fish both in weight and length growth of koi fish. The altitude that produces the best growth in this study is at an altitude of 26 meters above sea level or located in Kebumen. This is supported by the data showing the highest weight (average 4,1 g), the longest (average 2.5 cm), the lowest FCR (average 2,16), and the highest Survival Rate (SR) high (80%).
THE EFFECT OF THE DISTRIBUTION OF SEA SURFACE TEMPERATURE IN THE INDIAN OCEAN SOUTH OF JAVA ON THE CATCH OF YELLOWFIN TUNA (Thunnus albacares) USING AQUA MODIS SATELLITE IMAGERY Yudha Erlangga Putra; Hutwan Syarifuddin; Wiwaha Anas Sumadja
Asian Journal of Aquatic Sciences Vol 5 No 2 (2022): August 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.5.2.169-175

Abstract

Tuna (Thunnus sp.) is the second largest foreign exchange earner after shrimp. One type of tuna which is an export commodity is yellowfin tuna (Thunnus albacares). Research on the effect of the distribution of sea surface temperature in the Indian Ocean south of Java on the catch of yellowfin tuna (Thunnus albacares) has been carried out at the Nizam Zachman Ocean Fishery Port (PPS) from April 8 to April 30, 2021. This study aims to determine the effect of sea surface temperature (SST) on the catch of yellowfin tuna. The research method used was the method of observation and analysis of satellite imagery. Coordinate data and the number of catches were obtained from the Ocean Fishery Port Logbook (PPS) Nizam Zachman. SPL data obtained from satellite imagery Modis Aqua Level 3. The data was obtained and then analyzed using a simple regression test and the F test results of regression analysis showed that the correlation coefficient (R) of 12.7% and the coefficient of determination (R2) of 1,6% means that 1.6% of yellowfin tuna catches are influenced by SST and 98.4% is influenced by other factors. The F test results show that the SPL significance value is 0.332. The conclusion is that changes in SST have no significant effect on the catch of yellowfin tuna

Page 12 of 55 | Total Record : 543

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