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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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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 577 Documents
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UTILIZATION OF LIQUID ORGANIC FERTILIZER (LOF) FROM GOAT MANURE ON Lemna sp. BIOMASS IN THE MAINTENANCE MEDIA FOR SNAKEHEAD FISH (Channa striata) Ayu Mita Jami Yanti; Saberina Hasibuan; Rodhi Firmansyah
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.211-223

Abstract

Snakehead fish (Channa striata) culture produces waste in the form of leftover feed that can reduce water quality. One approach to improving water quality is the use of the aquatic plant Lemna sp. for phytoremediation. However, Lemna sp. growth requires sufficient nutrients; therefore, liquid organic fertilizer (LOF) derived from goat manure was applied. This study aimed to determine the optimal dose of goat manure LOF for Lemna sp. biomass production in snakehead fish culture water. The study was conducted from September to October 2025 at the Integrated Laboratory of Marine Sciences, Universitas Riau. A completely randomized design with five treatments and three replicates was used. Treatments were P0 (control), P1 (0,5 mL/L), P2 (1,0 mL/L), P3 (1,5 mL/L), and P4 (2,0 mL/L). The results showed that goat manure LOF significantly affected Lemna sp. biomass (P < 0.05). The best treatment was P4, producing the highest biomass (362.58 g/m²) and specific growth rate (6.56%). Application of goat manure LOF also supported snakehead fish growth, resulting in a final mean weight of 3.20 g, mean length of 3.88 cm, daily weight gain of 2.60 g/day, and survival rate of 98%. In total organic matter ranged from 16.43–55.72 mg/L, nitrate 0.1813–10.0229 mg/L, phosphate 0.6991–5.1416 mg/L, CO₂ 5–18 mg/L, DO 4.10–5.21 mg/L, pH 6.2–7.4, and temperature 27.1–28.9°C. These findings indicate that goat manure LOF at 2.0 mL/L effectively increases Lemna sp. biomass, promotes phytoremediation, and improves snakehead fish growth and survival.
THE EFFECT OF ADDING MORINGA LEAF FLOUR (Moringa oleifera) TO FERMENTED PASTED FEED ON THE GROWTH AND SURVIVAL OF GURAMI FISH LARVAE (Osphronemus gouramy Lac.) Ihsan Fadhillah; Netti Aryani; Sukendi Sukendi
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.224-231

Abstract

The growth of gurami fish larvae (Osphronemus gouramy Lac.) is often hindered by a limited supply of natural feed such as silkworms. Fermented paste feed supplemented with moringa leaf meal (Moringa oleifera) is expected to serve as an alternative feed that can reduce dependence on silkworms. The objective of this study was to determine the effect of fermented paste feed supplemented with moringa leaf meal (MLM) on the growth and survival of gurami fish larvae. The study was conducted over 40 days using a completely randomized design (CRD) consisting of six treatments with three replicates: P1 (0 g/kg MLF), P2 (20 g/kg MLF), P3 (40 g/kg MLF), P4 (60 g/kg MLF), P5 (80 g/kg MLF), and P6 (Tubifex sp.). The results showed that the addition of moringa leaf flour had a significant effect (P < 0.05) on absolute weight gain, absolute length gain, specific growth rate, and survival rate of gurami fish larvae. The best results were obtained in treatment P4 (60 g/kg TDK), with an absolute weight gain of 0.37 g, an absolute length gain of 1.58 cm, a specific growth rate of 8.36%/day, and a survival rate of 88.87%. Water quality parameters during the study remained within the optimal range, with temperatures ranging from 26.1–27.9 °C, a pH of 6.6–7.1, and dissolved oxygen levels of 5.2–6.6 mg/L.
SUSTAINABILITY STATUS OF MANTIS SHRIMP (Harpiosquilla raphidea) RESOURCES IN THE WATERS OF LABUHANBATU,  NORTH SUMATRA PROVINCE Irham Huspa Khasahatan Siregar; Pera Herawati; Siti Zubaidah
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.185-198

Abstract

This study was conducted from May to July 2026 in the Panai Hilir and Panai Tengah subdistricts of Labuhanbatu Regency. The objective of this study was to analyze the sustainability status of mantis shrimp (Harpiosquilla raphidea) resource management in the waters of Labuhanbatu, North Sumatra Province, using the . The research methods employed included secondary data analysis and a sample survey. The data were analyzed using Multi-Dimensional Scaling (MDS) through the RAPFISH (Rapid Assessment Technique for Fisheries) approach. Analysis of the sustainability status of mantis shrimp resource management using RAPFISH-Hamdangtis revealed that the average sustainability index value for mantis shrimp, based on five dimensions (environmental, mantis shrimp resource, facilities and technology, social and economic, and institutional and governance). The mantis shrimp resource in the waters of Labuhanbatu is considered unsustainable, with a value of 42.82 (<50). The environmental dimension showed the lowest score, indicating that habitat quality and ecosystem conditions are priority areas for management intervention. A plan to improve the sustainability of mantis shrimp management in the waters of Labuhanbatu, North Sumatra Province can leverage dimensions classified as relatively sustainable such as substrate deposition, hydro-oceanographic conditions, coastal degradation, until relevant regulations to address and improve less sustainable aspects
INVENTORY OF ECTOPARASITES IN AFRICAN CATFISH (Clarias gariepinus) AT AQUACULTURE SITES IN SUNGAI RAYA DISTRICT, KUBU RAYA REGENCY Deddy Widiyantoro; Eko Dewantoro; Eko Prasetio
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.199-210

Abstract

The african catfish (Clarias gariepinus) is one of the freshwater aquaculture species susceptible to ectoparasite infestations. This study aimed to identify the types of ectoparasites and determine the infestation levels in african catfish farmed in Sungai Raya Subdistrict, Kubu Raya Regency. The study was conducted from February to March 2026 using a survey method with purposive random sampling. A total of 95 catfish from five aquaculture sites were examined for mucus, fins, and gills using wet mount preparation and microscopic observation. Data were analyzed descriptively by calculating prevalence, intensity, and dominance. The results showed that African catfish were infected by three types of ectoparasites Dactylogyrus sp., Gyrodactylus sp., and Trichodina sp. with a total of 209 parasite individuals. Dactylogyrus sp. was the most dominant ectoparasite, with prevalence values ranging from 26.32–36.84% and dominance values ranging from 36.17–64.52%. Ectoparasite intensity values ranged from 2.33–6.00 individuals per fish, indicating a low to moderate level of infestation. Water quality parameters during the study remained within the optimal range for catfish farming. The presence of ectoparasites is believed to be influenced by environmental conditions and farming management practices. The results of this study can serve as baseline information for monitoring fish health and controlling diseases in African catfish farming
DIETARY SUPPLEMENTATION WITH BILLYGOAT-WEED (Ageratum conyzoides L.) LEAF MEAL: EFFECTS ON THE GROWTH PERFORMANCE AND SURVIVAL OF SNAKEHEAD FISH (Channa striata) Nur Ikhlas Syuhada; Ronal Kurniawan; Rodhi Firmansyah; Windarti Windarti; Pebri Nanda Perdana; Okta Rizal Karsih
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.242-250

Abstract

Channa striata (snakehead fish) is a fishery commodity of high economic and medicinal value, yet a relatively slow growth rate constrains its culture. This study aimed to evaluate the effect of billygoat-weed (Ageratum conyzoides L.) leaf meal supplementation in feed on growth, feed efficiency, and survival of snakehead fish. The study used a one-factor Completely Randomized Design with four dose treatments (0, 5, 10, and 15 g/kg feed) and three replicates. Snakehead fingerlings measuring 6.00±1 cm were reared for 30 days and fed ad satiation. The results showed that the addition of billygoat-weed leaf meal affected absolute weight gain, specific growth rate, feed efficiency, and feed conversion ratio (p<0.05). The dose of 5 g/kg feed produced the best performance, with an absolute weight gain of 3.19±0.37 g, specific growth rate of 1.61±0.21%/day, feed efficiency of 161.85±14.99%, and FCR of 0.62±0.05, indicating that 5 g/kg feed is the optimal dose in snakehead fish feed and reflecting a hormetic response pattern at higher doses. The survival rate remained high across all treatments (93.33–98.33%), indicating the ingredient's safety up to the highest dose tested. In conclusion, billygoat-weed leaf meal has potential as a phytoadditive to enhance the growth performance of snakehead fish.
THE ROLE OF Chlorella vulgaris SUPPLEMENTATION IN Lactiplantibacillus plantarum FERMENTATION ACTIVITY Diajeng Sriyana Saraswati; Bustari Hasan; Sumarto Sumarto; Tjipto Leksono; Dian Iriani; Yusmarini Yusmarini
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.251-260

Abstract

Chlorella vulgaris, a unicellular green microalga, is widely recognized for its rich nutritional profile and bioactive compounds that support microbial growth, making it a promising ingredient in functional food development. Supplementation in lactic acid bacteria (LAB) fermentation may enhance bacterial activity and improve product quality. This study aimed (1) to evaluate the nutritional composition of C. vulgaris and (2) to assess the effect of its supplementation in LAB growth substrates on the fermentation activity of two probiotic strains: Lactiplantibacillus plantarum 1 R 11.1.2 and L. plantarum 1 R 1.3.2. Four concentrations of C. vulgaris (0.25%, 0.5%, 0.75%, 1%) were applied, and proximate composition (moisture, ash, protein, fat, fiber, carbohydrate by difference) and fermentation parameters (pH value, total LAB count, total titratable acidity) were observed. Proximate analysis showed C. vulgaris contained 4.35% moisture, 6.72% ash, 30.01% protein, 1.24% fat, 15.10% fiber, and 42.58% carbohydrate (by difference), with a pH of 6.59. Fermentation results indicated that supplementation increased LAB growth (>9.49 log CFU/ml), accelerated pH reduction (4.67–4.34), and enhanced titratable acidity (>1.85%). L. plantarum 1 R 11.1.2 showed the strongest effect, with higher growth and acidification than L. plantarum 1 R 1.3.2. In conclusion, C. vulgaris supplementation, particularly at higher concentrations, significantly improved the fermentation performance of L. plantarum 1 R 11.1.2, supporting its potential use in functional and synbiotic food formulations.
OCEANOGRAPHIC DYNAMICS AND THEIR EFFECTS ON SEDIMENTATION RATES  IN THE MESJID RIVER ESTUARY, DUMAI Ilham Ilahi; Mubarak Mubarak; Nabila Afifah Azuga; Gita Purnama Sari; Vina Rahmadhani; Benny Heltonika
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.261-268

Abstract

This study analyzes the oceanographic dynamics (bathymetry, tides, and shoreline changes) and their impact on sedimentation rates in the Mesjid River estuary, Dumai, Indonesia, which faces the Malacca Strait. The research was conducted from July to September 2025 at two stations using sediment traps, bathymetric surveys, and NDVI analysis for mangrove cover. The results show an estuarine depth ranging from 2.34, with significant shallowing at the river mouth. The tidal pattern is classified as mixed, with a semidiurnal predominance (Formzahl number = 0.43). Shoreline change analysis indicates that abrasion from ship-generated waves and mangrove degradation dominate. The average sedimentation rate reached 7.22 cm/year, with the highest accumulation observed at the estuary mouth due to current deceleration and sediment trapping by mangrove roots. Oceanographic dynamics and anthropogenic pressures amplify sedimentation in this tropical estuary.

Page 58 of 58 | Total Record : 577

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