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Ronal Kurniawan
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Faculty of Fisheries and Marine,Universitas Riau Kampus Bina Widya KM. 12,5 Simpang Baru, Tampan, Pekanbaru 28293 Indonesia
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INDONESIA
Jurnal Perikanan dan Kelautan
Published by Universitas Riau
ISSN : 08537607     EISSN : 27218902     DOI : https://doi.org/10.31258/jpk
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Materials Science & Nanotechnology Physics
Jurnal Perikanan dan Kelautan (JPK) aims to promote interdisciplinary research and to foster collaboration among researchers from diverse backgrounds. Jurnal Perikanan dan Kelautan (JPK) is committed to publishing high-quality, original research that makes a significant contribution to fields of aquaculture and fisheries encompassing: Aquaculture Aquaculture Nutrition Management Aquaculture Disease and Immunology Fish Biochemistry, Genetics, and Molecular Biology Fish Reproduction, Physiology, and Endocrinology Fishery Resource Habitats and Management Genetic Engineering and Biotechnology of Aquatic Organisms Aquatic Biology, Environment, and Ecology
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 548 Documents
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Types and Abundance of Microplastics in Lokan (Geloina erosa) in the Mangrove Ecosystem of Kedabu Rapat Village, Meranti Islands Putri, Dinda Maharani; Nurrachmi, Irvina; Efriyeldi, Efriyeldi
Jurnal Perikanan dan Kelautan Vol. 30 No. 3 (2025): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

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

Abstract

One of the current problems for coastal areas is the high level of plastic waste. This waste degrades into microplastic particles, which can threaten the life of marine biota, including the lokan (G. erosa). Lokan (G. erosa) is used as a bioindicator to study the type and content of microplastics in the mangrove ecosystem. The purpose of this study was to analyze the differences in microplastic abundance between stations and microplastic content between sea turtle sizes, as well as the relationship between shell length and meat weight with microplastic content. This study was conducted from December 2024 to February 2025 in Kedabu Village, Meranti Islands Regency, which directly borders the Malacca Strait. The survey method was used, purposive sampling at three stations: the conservation mangrove area, the mangrove area near the fishing port, and the mangrove area near the settlement. Sea turtles were taken during low tide, each one using a machete. Individual per station. The study results showed that three types of microplastics were found in the lokan (G. erosa): fiber, film, and fragments, with an average of 32.73 particles per individual. There was a significant difference in microplastic content between small and large sea turtles, but microplastic abundance between stations did not differ significantly. The highest microplastic abundance was found at Station 1 (11,331 particles/g). Shell length and meat weight showed a moderate positive relationship with microplastic content
Financial Feasibility Analysis of Crab (Portunus pelagicus) Fishing Business in Pasir Limau Kapas District, Rokan Hilir Regency Zulhami, M; Arief, Hazmi; Yolandika, Clara
Jurnal Perikanan dan Kelautan Vol. 30 No. 3 (2025): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

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

Abstract

Pasir Limau Kapas District is a coastal area in Rokan Hilir Regency, known for its unique character as a center for traditional fishing. Crab production in this District in 2018 was recorded at 486 tons, then increased to 512 tons in 2019, and 527 tons in 2020. In 2021, there was a slight decrease to 498 tons due to extreme weather that affected fishing strength, but it increased again to 538 tons in 2022. This study was conducted in February 2025 at Pasir Limau Kapas District, Rokan Hilir Regency, aiming to calculate the investment, total costs, income, and profits, and to analyze the financial feasibility of the crab fishing business. The method used in this study was a survey method with a total of 35 crab fishermen as respondents. The study results indicated that the average investment spent by fishermen was IDR 17,430,722.69. Total costs are IDR 92,105,356.14/year, revenue is IDR 104,996,571.43/year, and profit is IDR 12,891,215.29/year. The chopped crab fishing business demonstrates good economic feasibility. With an R/C Ratio of 1.14, this business generates revenues greater than the costs incurred. The return on investment (ROI) of 14% indicates that this business provides moderate profits compared to the total costs incurred. The payback period (PPC) of 1.35 years, or approximately 1 year and 4 months, is relatively fast, allowing fishermen to recover their initial investment relatively quickly. Although it does not generate significant profits, this business can be a sustainable source of livelihood for fishermen because it meets the required business feasibility parameters.
Potential and Utilization Rate of Indian Scad (Decapterus russelli) Landed at UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province Ukhwatul, Vify; Brown, Arthur; Zain, Jonny
Jurnal Perikanan dan Kelautan Vol. 30 No. 3 (2025): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.3.288-296

Abstract

The utilization of Indian scad (Decapterus russelli) in Carocok Tarusan has made an important contribution to fishing activities, but data on the potential and rate of utilization are limited. The research aims to determine the potential and level of utilization of indian scad (Decapterus russelli) landed at UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province. The research was conducted in December 2024 using secondary data from the institution on catch and fishing efforts for 2019-2023. Methods used are Catch Per Unit Effort (CPUE) and surplus production models of Schaefer and Fox to estimate the maximum sustainable yield (MSY) and optimum fishing effort (f-optimum). According to the analysis results, the Fox model is the most suitable model to describe the stock status and management of indian scad in this region. MSY was estimated at 234,653.74 kg/year with an optimum effort of 1,902 trips/year. Total allowable Catch (TAC) was 187,722.99 kg/year. The average utilization rate was 97%, which shows that the Indian scad stock is fully exploited. Meanwhile, the average level of effort at 110% showing that fishing effort exceeds the optimum level, meaning that more careful management is needed to ensure the sustainability of the stock
Optimisation of the Use of Cultivation System Technology to Increase Tilapia (Oreocromis niloticus) Production in Intensive Cultivation in the Era of Modernisation Santikawati, Susi; Batubara, Lenni Wahyuni
Jurnal Perikanan dan Kelautan Vol. 30 No. 3 (2025): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.3.409-414

Abstract

Tilapia (Oreochromis niloticus) is one of the main commodities in freshwater aquaculture because it is highly adaptable and easy to breed. In intensive aquaculture systems, production success is highly dependent on fish growth, which is closely related to feed availability and water quality. This study aims to analyze the effectiveness of modern aquaculture technologies, namely the biofloc system, aquaponics, and the Recirculating Aquaculture System (RAS), in supporting the success of tilapia aquaculture. The research was conducted in August 2025 at the Freshwater Aquaculture Center of the Sibolga College of Fisheries, North Sumatra. The research method used a completely randomised design with four treatments and three replicates. The results showed that the aquaponics technology (P3) produced the highest absolute weight growth (9.97±0.02 g), specific growth rate (4.26±0.00%/day), and absolute length (1.77±0.06 cm), followed by RAS (P2), control (P0), and biofloc (P1). The survival rate across all treatments ranged from 95.33% to 97.33%, indicating Tilapia's good adaptability to various farming systems. Water quality parameters were within optimal ranges: 29-30°C, pH 6.1-7.6, dissolved oxygen 4.5-5.0 mg/L, and ammonia 0.0001-0.0005 mg/L. The aquaponic system showed the most stable water quality with the lowest ammonia concentration (0.0001-0.0003 mg/L). This study demonstrates that aquaponic technology provides the best treatment for modernised intensive tilapia farming
Potential of Red Dragon Fruit (Hylocereus polyrhizus) to Prevent Aeromoniasis in Striped Catfish (Pangasianodon hypophthalmus) Tiara Oktari; Morina Riauwaty; Henni Syawal
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.152-162

Abstract

Red dragon fruit peel is a natural material with antibacterial and antifungal properties, owing to its active compounds, including alkaloids, flavonoids, niacin, tannins, and vitamin C. These compounds can inhibit the growth of Aeromonas hydrophila and enhance fish immunity. This research was carried out from January to August 2025 at the Parasite and Fish Disease Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Riau. This study aimed to examine the effectiveness of red dragon fruit peel solution (Hylocereus polyrhizus) in preventing Aeromoniasis in striped catfish (Pangasianodon hypophthalmus). The experiment used a Completely Randomized Design (CRD) with five treatments and three replications. Treatments consisted of KN: negative control (without immersion and not infected with A. hydrophila), KP: positive control (without immersion and infected with A. hydrophila), P1 (immersion at 1 ml/L and infected), P2 (immersion at 1.5 mL/L and infected), and P3 (immersion at 2 ml/L and infected). Fish were immersed in the peel solution for 30 minutes daily for three consecutive days. Blood sampling was conducted at the beginning of maintenance, on the 30th day, and on the 14th day after infection. The findings indicated that the best dose was P2 (1.5 mL/L), producing a total erythrocyte count of (291.40×10⁴ cells/mm³), hematocrit (37.66%), haemoglobin (9.43 g/dL), leukocyte count of (10.57×10⁴ cells/mm³), phagocytic activity of (32.00%), and survival rate of (92.33%). Water quality parameters remained within optimal ranges: temperature 26.8–28°C, pH 5.5–6.9, and dissolved oxygen (DO) 3.9–5.8 mg/L. These findings suggest that red dragon fruit peel extract at 1.5 ml/L has potential as a natural immunostimulant to prevent Aeromoniasis in P. hypophthalmus.
Composition and Percentage Comparison of Bycatch between Conventional Gillnets and Modified Gillnets Afni Afriani; Irnawati Sinaga; Fandi Handika Arta
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.163-169

Abstract

Sibolga, as one of the major fishing port cities in North Sumatra, is an area where surface gillnets are commonly used in pelagic fishing operations. However, the use of gillnets currently faces significant challenges, including high bycatch levels and threats to the sustainability of pelagic fish ecosystems. This study employed an experimental fishing method, specifically surface gillnet trials. The trials were conducted using gillnets with mesh sizes of 2” and 2.5”. The results show that the modified gillnet with a 2.5-inch mesh size yields a significantly higher target catch percentage (HTU) of 73% compared to the conventional gillnet with a 2-inch mesh size, which yields only 27%. This significant difference highlights the importance of selecting the appropriate mesh size to optimize gear selectivity. The principle of geometric selectivity can explain the 46% difference in HTU between the two types of gillnets. Furthermore, the use of conventional gillnets with a 2-inch mesh size resulted in a higher HTS (62%) than modified gillnets with a 2.5-inch mesh size (38%). These data indicate that smaller mesh sizes tend to be less selective and capture more non-target species. A larger L value indicates this, compared to the length of the first fish caught (Lc), suggesting that the fishing practices employed do not threaten the sustainability of fish populations.
Efficiency of Unloading Time of Fish Catches at Nusantara Sibolga Fishery Port, North Sumatra Maria Belen Siregar; Lauura Hermala Yunita; Yun Alwi
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.169-174

Abstract

Unloading efficiency is the optimal outcome of well-executed, quick unloading activities that avoid wasted time. This research aims to determine the efficiency of unloading fish catches and the factors that influence it at the Sibolga Archipelago Fisheries Port (PPN). This research was carried out at the Archipelago Fisheries Port (PPN) Sibolga, Central Tapanuli Regency, North Sumatra Province, from 19 January to 20 February 2024. The method used in this research was a survey. Then, the sample determination method uses purposive sampling, namely, samples selected according to predetermined criteria; 50 samples were collected using data analysis of demolition time efficiency and multiple linear regression. The variables observed were the ship's size, the number of catches, the number of unloaders, the number of sorters, and the amount of wasted time. The results of this research show that time efficiency is 76%. Then the R-squared value is 0.72, and the multiple R value is 0.84. Furthermore, the calculated F value was 22.665, and the F table was 3.545. It can be concluded that the unloading efficiency at the Sibolga Archipelago Fisheries Port (PPN) is 76%, which is considered efficient
Marketing Efficiency of Yellowfin Tuna (Thunnus albacares) at Bungus Ocean Fisheries Port, West Sumatra Fadhila Sahira Erian Putri; Lauura Hermala Yunita; Afriani harahap
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.187-196

Abstract

The Bungus Ocean Fisheries Port (PPS Bungus) in West Sumatra plays a crucial role in marketing yellowfin tuna (Thunnus albacares). As a fish landing base in western Indonesia, PPS Bungus supports activities including fishing, unloading, sorting, and tuna distribution. The marketing channels involve a series of interdependent institutions that deliver the product to consumers, with varying levels of efficiency and costs. This study aims to understand the marketing channels, marketing efficiency, marketing margins, and price differences of yellowfin tuna at PPS Bungus, West Sumatra. The research was conducted at Bungus Ocean Fisheries Port (PPS) in West Sumatra Province from July 25 to August 16, 2023. The methodology employed in this research involved surveys, data processing using Microsoft Excel, and SPSS version 26. The research findings indicate that there are two marketing channels for yellowfin tuna: one between fishermen and PT. Dempo Andalas Samudera, and another between fishermen and PT. Lintas Laut Samudera. The marketing margin for yellowfin tuna at PT. Dempo Andalas Samudera is IDR 12,000, and at PT. Lintas Laut Samudera is IDR 13,000. The fishermen's Share at PT. Dempo Andalas Samudera is 74.46%, and at PT. Lintas Laut Samudera is 72.91%. The efficiency of the marketing channels for yellowfin tuna shows 1.17 for PT. Dempo Andalas Samudera and 1.14 for PT. Lintas Laut Samudera. This study demonstrates that the marketing channels at PPS Bungus are efficient, and there are no differences in selling prices between PT. Dempo Andalas Samudera and PT. Lintas Laut Samudera
Length–Weight Relationship of Lambak Fish (Labiobarbus ocellatus) from Fishermen's Catches in the Batanghari River Lauura Hermala Yunita; Yoppie Wulanda; Septy Heltria; Rizky Janatul Magwa; Ester Restiana Endang Gelis; M. Hariski
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.197-201

Abstract

Lambak fish (Labiobarbus ocellatus) is a freshwater species of ecological and economic importance in the Batanghari River. Basic biological information, particularly the length–weight relationship, is needed to understand growth characteristics and support sustainable fisheries management. This study aimed to analyze the size distribution and length–weight relationship of lambak fish based on fishermen's catches. Sampling was conducted in August 2025 through direct surveys of daily catches using traditional fishing gears. The length–weight relationship was analyzed using the equation W = aLᵇ. The results showed that the samples consisted of 22 females and 33 males. The total length of females ranged from 117–160 mm and males from 100–157 mm, with weight ranges of 15–36 g and 13–40 g, respectively. The regression coefficient (b) values of 2.1483 for females and 2.2459 for males indicated a negative allometric growth pattern. The coefficients of determination (R²) of 0.6904 for females and 0.501 for males suggested relatively strong to moderate length–weight relationships. This growth pattern reflects the species' biological response to environmental conditions
Identification of Salmonella sp. in Milkfish (Chanos chanos) Collected from PPI Ujong Baroh, West Aceh Ahmad Rasyid Pohan; Sri Wahyuni; Hayatun Nufus; Ismail Sulaiman; Samsul Bahri
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.181-186

Abstract

Milkfish (Chanos chanos) is an important fishery commodity in Indonesia due to its high nutritional value and affordability. However, its high moisture and protein content make it highly susceptible to microbial contamination, including pathogenic bacteria such as Salmonella sp., which may pose serious food safety risks to consumers. This study aimed to detect and characterize  Salmonella sp. in milkfish landed at the Ujong Baroh Fish Landing Base (PPI Ujong Baroh), West Aceh Regency, Indonesia. The study was conducted in April 2025 using an observational sampling approach followed by laboratory-based microbiological analysis. A total of 10 milkfish samples were collected purposively during fish landings. Samples were aseptically dissected, and tissues from the gills, skin, muscle, and intestine were homogenized for bacterial analysis. Isolation was carried out using Buffer Peptone Water (BPW) as a pre-enrichment medium and Salmonella Shigella Agar (SSA) as a selective medium. Identification was performed based on macroscopic colony morphology and microscopic Gram staining characteristics. The results showed that all ten samples tested positive for Salmonella sp. contamination. Colonies grown on SSA medium exhibited circular shapes, black pigmentation, smooth surfaces, entire margins, and convex elevations. Microscopic observations revealed Gram-negative coccobacillus to be short rod-shaped bacteria that appeared pink after Gram staining. These findings indicate that milkfish landed at PPI Ujong Baroh were contaminated by Salmonella sp., highlighting the need for improved sanitation practices and stricter microbiological monitoring during post-harvest fish handling

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