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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 524 Documents
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EDIBLE FILM CHARACTERISTICS WITH CARRAGEENAN (Eucheuma cottonii) FLOUR EXTRACTED WITH DIFFERENT BASE SOLVENTS Sirait, Putriana Sari; Diharmi, Andarini; Azmi, Heriza
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.285-290

Abstract

Edible film is a primary packaging in the form of a thin layer and functions as a coating for food ingredients, which can be made from hydrocolloid compounds. Carrageenan polysaccharide is one of the hydrocolloids used to make edible films because it produces strong gel properties. Eucheuma cottonii is a seaweed that produces relatively high levels of kappa carrageenan, namely around 50%. This research aims to determine the physical and mechanical characteristics of edible film with carrageenan flour from E. cottonii extracted with different base solvents. The research method was carried out experimentally with an experimental design, namely a non-factorial Completely Randomized Design (CRD) with three levels of treatment, namely differences in carrageenan flour extracted with KOH, NaOH and Ca(OH)2 solvents. The parameters of this research are physical and mechanical analysis of edible film including testing tensile strength, thickness, percent elongation, and water vapor transmission rate. The research results showed that the best results were in the treatment of carrageenan flour extracted with KOH solvent, where the physical and mechanical analysis of the edible film showed a tensile strength value of 9.49±0.50 MPa, a thickness of 0.03±0.003 mm, a water vapor transmission rate of 30.13±0.41 g/m2/day, and a percent elongation 9.86±0.41%.
MAXIMUM SUSTAINABLE YIELD (MSY) ESTIMATION AND CATCH POTENTIAL OF JINGA SHRIMP (Metapenaeus monoceros) IN WEST TANJUNG JABUNG WATERS, JAMBI PROVINCE Yunita, Lauura Hermala; Saputri, Diah Maulani; Wulanda, Yoppie; Hariski, M; Wulandari, Wulandari; Hasanah, Hasanah
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.291-299

Abstract

One of the key commodities in the capture fisheries sector is the Jinga Shrimp (Metapenaeus monoceros), which is widely distributed in tropical waters, including the coastal area of Tanjung Jabung Barat, Jambi Province. This study aims to estimate the Maximum Sustainable Yield (MSY) and the fishing potential of Jinga Shrimp in the waters of Tanjung Jabung Barat. The data used are secondary data on annual catch and fishing effort from 2017 to 2023, obtained from the local Fisheries Office. The analysis was conducted using the Schaefer model approach, which includes calculations of Catch per Unit Effort (CPUE), MSY, optimum effort (EMSY), Allowable Catch, utilization rate, and exploitation rate. The results showed an MSY value of 2,189.60 tons/year and an EMSY of 68.19 trips/year. As the safe harvest limit, the allowable catch was set at 1,751.68 tons/year (80% of MSY). The average utilization rate was 88%, indicating that the resource has not yet experienced overfishing. However, the exploitation rate has exceeded the optimum limit (124%) and is considered overfishing. The negative relationship between CPUE and effort (R² = 96.72%) indicates a decline in stock due to high fishing intensity. Therefore, adaptive and stock-based management policies are necessary to ensure this region's sustainable conservation of Jinga Shrimp populations.
HYBRIDISATION OF FEMALE KOI (Cyprinus rubrofuscus) AND MALE KAPIAT (Barbonymus schwanenfeldii) WITH ARTIFICIAL SPAWNING IN KAMPAR DISTRICT, RIAU Nasita, Abian Surya; Rostika, Rita; Priowirjanto, Gatot Hari; Zidni, Irfan; Davinci, Leonardo; Kurniawan, Ronal; Karsih, Okta Rizal
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.300-309

Abstract

This study aims to evaluate the potential for hybridisation between female koi (Cyprinus rubrofuscus) and male kapiat (Barbonymus schwanenfeldii) through artificial spawning. The study was conducted at Kampar Ornamental Fish, Kampar District, Riau Province. The method used was a Completely Randomized Design (CRD) with two treatments: P1 (koi × koi) as the control, and P2 (koi × kapiat) as the hybrid treatment, each with three replicates. The parameters observed included fecundity, fertilisation rate (FR), hatching rate (HR), absolute length growth, and survival rate (SR). The results showed that hybridisation produced promising performance in terms of FR (21.99%), HR (55.02%), and SR (41.6%). In conclusion, hybridisation between koi and kapiat fish has the potential to produce superior varieties, although attention must be paid to environmental factors such as temperature and pH
CONTROLLING CANNIBALISM OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus) LARVAE USING PASTE FEED SUPPLEMENTED WITH TURMERIC FLOUR Yulindra, Ade; Benny Heltonika; Netti Aryani
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.310-318

Abstract

Cannibalism is a significant issue during the early stages of Asian redtail catfish (Hemibagrus nemurus) culture, as it negatively affects survival rates. This study aimed to investigate of turmeric (Curcuma longa) flour supplementation in pasta feed to control cannibalism in Asian redtail catfish larvae and the potential to replace silk worm as a feed. A completely randomized design (CRD) was employed, consisting of five treatment groups with four replications each. The larvae were fed pasta diets supplemented with varying doses of turmeric flour (0, 5, 10, and 15 mg/kg), along with a comparative feed using Tubifex sp. The parameters assessed included cannibalism rate, survival rate, and growth performance. The results showed that the highest survival rate (93.33 ± 1.33%) and lowest cannibalism index (2.67 ± 0.94%) were observed in the group fed Tubifex sp. The highest weight gain (24.22 ± 0.53 g) and specific growth rate (9.35 ± 0.03%) were also recorded in this group. However, supplementation of turmeric flour at a dosage of 15 mg/kg in pasta feed was able to reduce cannibalism and improve the growth of Asian redtail catfish larvae. This treatment resulted in a cannibalism index of 11% and a survival rate of 82.67%. In terms of growth performance, larvae under this treatment exhibited a weight gain of 6.13 g, a length gain of 3.58 cm, a specific growth rate (SGR) of 6.07%/day, and a particular growth rate of length (SLR) of 4.25%/day. Pasta feed supplemented with 15 mg/kg turmeric flour can serve as an alternative to replace silk worms, achieving 25% of their weight gain and 63% of their length gain.

Page 53 of 53 | Total Record : 524

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