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Asian Journal of Aquatic Sciences

ajoas
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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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HEMATOLOGY OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus) REARED IN MEDIA WITH REGULAR ADDITION OF PROBIOTICS Rona Lestari; Henni Syawal; Iesje Lukistyowati
Asian Journal of Aquatic Sciences Vol 6 No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.6.1.10-20

Multi-cell probiotic containing bacteria Nitrosomonas sp., Nitrobacter sp., and Bacillus sp. This research was conducted from March to May 2021 at the Fish Disease and Parasite Laboratory, Department of Aquaculture, Faculty of Fisheries and Marine, Riau University. This study aimed to analyze the hematology of Asian redtail catfish reared in media that was added with probiotics periodically and to obtain the best time interval for giving probiotics to the rearing medium. The method used in this study is an experimental method by applying a Completely Randomized Design (CRD) with five treatment levels and three replications. The treatments used were the administration of probiotics at a dose of 0,01 mL/L of water with different time intervals, P0 (without treatment), P1 (5 days once), P2 (10 days once), P3: (15 days once), and P4 (20 days once). Fish were reared for 50 days. The results show that the Asian redtail catfish reared with the addition of probiotics in the rearing medium had a significant effect (P<0.05) with the best time interval being once every 5 days in the P1 treatment, seen from the total erythrocytes 2.43 x 106 cells/mm3, hematocrit level 28.67%, hemoglobin level 7.40 g/dL, total leukocytes 9.92 x 104 cells/mm3, leukocrit level 1.83%, and glucose 49.67 g /dL. Water quality during the study was still in the normal range that could support the growth of Asian redtail Catfish, namely temperature 26-27.1 C, pH 5.8-6.5, DO 6.0-7.4 mg/L, and ammonia 0.0011-6.5 0.0047 mg/L

STAKEHOLDER AND INSTITUTIONAL ANALYSIS IN THE MANAGEMENT OF LUBUK LARANGAN TEPIAN LAMO DUSUN RANTAU PANDAN BUNGO REGENCY JAMBI PROVINCE Hertati, Rini
Asian Journal of Aquatic Sciences Vol. 5 No. 2 (2022): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Lubuk larangan Tepian Lamo is located in Rantau Pandan Hamlet, Bungo Regency, Jambi Province. Formed in 2015 the formation was carried out in deliberation by the community, traditional leaders and the Livestock and Fishery Service of Bungo Regency, the management of Lubuk larangan was carried out based on the customary law of the local Hamlet. Monitoring of community participation is still relatively low, namely for thoughts 18.6%, property 15.5%, expertise 13.5% and personnel 20.3%. The high energy score is evidenced by the high participation of the community in carrying out mutual cooperation for opening, closing and mutual cooperation for repairing facilities and infrastructure in the Lubuk larangan area.

COMMUNITY STRUCTURE OF GASTROPODS IN THE COASTAL WATERS OF NORTH RUPAT DISTRICT Pertika, Dinda; Nasution, Syafruddin; Tanjung, Afrizal
Asian Journal of Aquatic Sciences Vol. 5 No. 2 (2022): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Community structure is a concept that studies the composition or composition of species and abundance in a community. Coastal waters are areas with a depth of less than 200 meters and there is a littoral area located between the highest tide and the lowest low tide or called the intertidal area. One of the community of organisms in this intertidal area is gastropods. This research was conducted from December 2021 to January 2022. The purpose of the study was to determine the structure of the gastropod community in the coastal waters of North Rupat District consisting of species, density, diversity index, uniformity index, dominance index, distribution pattern, and community similarity. As supporting data in this study, several environmental parameters were also measured which included water quality, sediment type and sediment organic matter content. The research method used is a survey method, where sampling using the quadrant transect method is carried out at 3 stations. Based on the results of the study found 14 species of gastropods. The species that were found in all stations were Indothais gradata. Gastropod density is 15.800 ind/ha. Diversity index value (H') 1.85, uniformity index (E) 0.70, dominance index (C) 0.24, distribution pattern (Id) 3.24 is clustered, species similarity index (Ss) between stations Tanjung Medang and Teluk Rhu 83% of species are almost the same and between stations Tanjung Medang and Tanjung Punak 15% and between stations Teluk Rhu and Tanjung Punak 17% are not the same. Water quality parameters as follows: temperature 27-28oC; salinity 30-31 ppt; pH 6-7. Sediment organic matter 0.50-2.28%, sand sediment type.

HEMATOLOGY OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus) REARED IN MEDIA WITH REGULAR ADDITION OF PROBIOTICS Lestari, Rona; Syawal, Henni; Lukistyowati, Iesje
Asian Journal of Aquatic Sciences Vol. 6 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Multi-cell probiotic containing bacteria Nitrosomonas sp., Nitrobacter sp., and Bacillus sp. This research was conducted from March to May 2021 at the Fish Disease and Parasite Laboratory, Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Riau. This study aimed to analyze the hematology of Asian redtail catfish reared in media that was added with probiotics periodically and to obtain the best time interval for giving probiotics to the rearing medium. The method used in this study is an experimental method by applying a Completely Randomized Design (CRD) with five treatment levels and three replications. The treatments used were the administration of probiotics at a dose of 0,01 mL/L of water with different time intervals, P0 (without treatment), P1 (5 days once), P2 (10 days once), P3: (15 days once), and P4 (20 days once). Fish were reared for 50 days. The results show that the Asian redtail catfish reared with the addition of probiotics in the rearing medium had a significant effect (P<0.05) with the best time interval being once every 5 days in the P1 treatment, seen from the total erythrocytes 2.43 x 106 cells/mm3, hematocrit level 28.67%, hemoglobin level 7.40 g/dL, total leukocytes 9.92 x 104 cells/mm3, leukocrit level 1.83%, and glucose 49.67 g /dL. Water quality during the study was still in the normal range that could support the growth of Asian redtail Catfish, namely temperature 26-27.1 C, pH 5.8-6.5, DO 6.0-7.4 mg/L, and ammonia 0.0011-6.5 0.0047 mg/L.

EFFECT OF UREA CONCENTRATION ON THE GROWTH OF CELLS OF Nannochloropsis sp. LABORATORY SCALE Wahyuni, Indri; Nurrachmi, Irvina; Nursyirwani, Nursyirwani
Asian Journal of Aquatic Sciences Vol. 6 No. 3 (2023): 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 from October 2021 to January 2022 in the Natural Feed Laboratory of the Brackish Water Cultivation Fisheries Center (BPBAP) Ujung Batee, Aceh. This study aimed to determine whether urea has an effect and the best urea concentration on the growth of Nannochloropsis sp. This study used an experimental method with one-factor RAL (Completely Randomised Design), consisting of 4 levels of treatment and control with three replications so that 15 experimental units were obtained. The treatments tested were the uses of urea 40 ppm (treatment A), urea 60 ppm (treatment B), urea 80 ppm (treatment C), urea 100 ppm (treatment D), and Walne 1 ml (control). The population density of Nannochlropsis sp. was found in treatment D on day 4 (2414 x 104 cells/mL), and the lowest population growth was shown in treatment A (1177 x 104 cells/mL). The highest absolute growth rate occurred in treatment D (2229x 104 cells/mL), while the highest relative growth rate occurred in treatment D (1205%), and the highest specific growth rate occurred in treatment B (79% per day).

THE RELATIONSHIP OF PRIMARY PRODUCTIVITY OF PHYTOPLANKTON WITH OCEANOGRAPHIC PARAMETERS IN THE WATERS OF LUBUK GAUNG SUB-DISTRICT, SUNGAI SENIN DISTRICT, DUMAI Tri Widia Sari; Yeeri Badrun; Nofripa Herlina
Asian Journal of Aquatic Sciences Vol 6 No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.6.1.142-147

The waters of Lubuk Gaung Village, Sungai Sembilan District are areas that are widely used as transportation routes. Activities in these waters will cause environmental pollution, which affects the life of phytoplankton. The purpose of this study was to determine the relationship between the primary productivity of phytoplankton with oceanographic parameters in the waters of Lubuk Gaung Village, Sungai Sembilan District, Dumai. The method used is the survey method to determine the research station and the in situ method for measurement and sampling of oceanographic parameters. The results obtained are Oceanographic parameters from the three research stations, namely Brightness = 30 – 49 cm, Turbidity = 47.4 – 58.4 FTU, TSS = 124 – 209 mg/L, and BOD = 0.408 – 1.224 mg/L. The average value of primary productivity of the waters ranged from 48.07 to 79.69 mgC/m3/day. The value of primary productivity at station II is categorized into Oligotrophic, namely low waters. Stations I and III are categorized into mesotrophic waters, namely medium waters. The relationship between brightness, turbidity, and TSS with primary productivity has a very strong and positive (unidirectional) correlation value. The relationship between BOD and primary productivity has a very strong and negative (opposite) correlation.

EFFECT OF NATURAL FEEDING ON THE GROWTH OF SNAKEHEAD FISH (Channa maruliodes) Melani Putri; Sri Hidayati; Eric Armando
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/ajoas.6.2.187-193

The obstacle faced by snakehead fish farmers is the provision of feed that has quality and a high protein content for the growth period of fish. Natural feed can be an alternative. The purpose of this study was to determine the effect of the natural feeding of gold snails, earthworms, and Hongkong caterpillar types on the growth of snakehead fish. The research was conducted from January to February 2022, in Adipasir Village RT. 07 RW. 02 Rakit District, Banjarnegara Regency, Central Java. The method used in this study was experimentally arranged using a completely randomized design (CRD). This study consisted of 4 treatments with 4 replications and each treatment consisted of 5 snakehead fish so the number of containers used was 16 pieces and 80 snakehead fish. The analysis used was a one-way Analysis of Variance (ANOVA) with an error level of α = 0.05. The treatment consisted of T1 (control with Pellet), T2 (gold snail), T3 (earthworms), and T4 (Hongkong Caterpillars). The results showed that natural feeding influences the growth of snakehead fish. The best treatment is natural food in the form of a Hongkong caterpillar with an absolute weight of 4.7475 g, an absolute length of 3.63 cm, FCR of 1.07

MANGROVE FOREST EFFECT ON THE COASTLINE IN RANGSANG ISLAND RIAU PROVINCE Nadeak, Paulinus; Mubarak, Mubarak; Efriyeldi, Efriyeldi
Asian Journal of Aquatic Sciences Vol. 3 No. 1 (2020): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

The study was conducted in May-June 2019 on Rangsang Island. This study aims to determine the effect of mangrove forests on coastline found on the island of Rangsang in Riau Province. The sampling location was determined by purposive sampling, namely 3 station points, namely Segomeng Village, Tanjung Kedabu Village, and Sungai Gayung Kiri Village. Landsat image data analyzed at the Oceanographic Physics Laboratory of the Department of Marine Sciences, Faculty of Fisheries and Maritime Affairs, University of Riau. To find out the area of mangroves using Landsad 5 TM satellite imagery and Landsat 8 OLI Tirs imagery and analyzed using Er Mapper Software, Envi 4.5 and Arcgis 10.3. Calculation of the structure of the mangrove community is carried out using the line plot plot method. The results of the analysis of the vast landsat image of mangroves in the coastal areas of Rangsang Island in 1997, 2002, 2007, 2013, 2019 were respectively 11,093 ha, 10,807 ha, 10,393 ha, 10,121 ha and 9,971 ha. Changes in the coastline indicate the occurrence of abrasion and accretion, where the highest abrasion occurs at station three with an average of -7.6 m/year and accretion occurs at station one with an average of 2.68 m / year. Mangrove density at station one is 2266.7 ind / ha and at station two that is 1466.7 ind / ha. Mangrove species found were Rhizophora apiculata, Rhizophora mucronata, Avicennia alba, Sonneratia ovata, Bruguiera gymnorrhiza, and Xylocarpus granatum.

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/

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/

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%.

Page 18 of 55 | Total Record : 543

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Nur Arifin

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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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Riau

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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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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