Jurnal Perikanan dan Kelautan
type: channel
description: Journal of Fisheries and Marine was published by the Faculty of Fisheries and Marine of the Universitas Riau in 2007. The scope of the research included: Aquaculture, fisheries socioeconomic, fisheries technology, management of aquatic resources, utilization of fisheries and marine resources
publisher: Fakultas Perikanan dan Kelautan Universitas Riau
language: en
publication name: Jurnal Perikanan dan Kelautan
issn: 0853-7607
items: Potential and Utilization Rate of Indian Scad (Decapterus russelli) Landed at UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province
items: Financial Feasibility Analysis of Crab (Portunus pelagicus) Fishing Business in Pasir Limau Kapas District, Rokan Hilir Regency
items: Association of Aquatic Plants and Fish in Lake Bokuok, Aursati Village, Tambang Subdistrict, Kampar Regency, Riau
items: Habitat and Density of Crab (Parathelpusha pardus) in the Tanduk River, Rumbio Village, Kampar District, Riau
items: Structure of Mangrove Vegetation Community in the Tidal Area of Siak River, Riau
items: Types and Abundance of Microplastics in Lokan (Geloina erosa) in the Mangrove Ecosystem of Kedabu Rapat Village, Meranti Islands
items: Potential and Utilization Rate of Anchovy (Stolephorus sp) Landed at UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province
items: Density and Distribution of Gastropods in Mangrove Forests of Concong Dalam Village, Indragiri Hilir, Riau Province
items: Existing Condition of Lubuk Larangan Management as a Form of Local Wisdom in Padang Sawah Village, Kampar Kiri Subdistrict, Kampar Regency, Riau Province
items: The Analysis of CPUE and Factors Affecting the Catch of Tonda Fishing at Bungus Ocean Fishing Port in West Sumatra
items: The Effect of Using Different Probiotic Products in Biofloc Systems on the Growth of Snakehead (Channa striata)
items: Factors Affecting the Income of Capture Fishermen in Kenagarian Tiku V Jorong, Tanjung Mutiara District, Agam Regency, West Sumatra
items: Analysis of Fishing Business Using Gill Net Fishing Gear in Bogak Village, Tanjung Tiram District, Batu Bara Regency, North Sumatra Province
items: Strategy of Developing Green Talao Park Marine Tourism Object in Nagari Ulakan Padang Regency, Pariaman, West Sumatra
items: Growth Performance Cachama (Colossoma macropomum) Fished by Polyculture with Taiwan Kijing (Anodonta woodiana)
items: Bandung City's Cikapundung River Water Quality Status Using Pollution Index for Fisheries Development
items: The Effect of Stocking Density Differences on the Survival and Growth of Nile Tilapia (Oreochromis niloticus) Juveniles in a Bucket Aquaculture System (Budikdamber)
items: Comparison of Wire Trap (Temilar) Catch Yields between Daytime and Nighttime Operations in Tarikan Village, Muaro Jambi Regency
items: Comparative Study of Growth Circle Patterns in Otoliths of Guppy Fish (Poecilia reticulata) from Areas Polluted with Domestic Sewage
items: Comparative Study of Cultivation of Leptobarbus hoeveni and Wallago sp in Ranah Village, Kampar Regency, Riau
items: Analysis of the Relationship between Organic Material Content and Sediment Grain Size with Macrozoobentos Abundance in Sungai Selari Village, Bengkalis Regency
items: Risk and Income Analysis of Vaname Shrimp Cultivation Business (Litopenaeus vannamei) in Bantan District, Bengkalis Regency
items: Enrichment of Fish Resources with Artificial Habitat in Sepunjung Lake Rantau Baru Village, Pangkalan Kerinci, Pelalawan
items: Population Structure of Polymesoda expansa Shellfish in Mangrove Forest in Banglas Village, Meranti Islands
items: Density of Escherichia coli Bacteria in Blood Clams (Anadara granosa) in Anak Setatah Village, Meranti Islands Regency, Riau
items: The Impact of Sand and Stone Mining on the Width of the Kampar River in Tambang District, Kampar
items: Histopathology of Gills and Liver of Tilapia (Oreochromis niloticus) Infected with Streptococcus agalactiae and Fed with Fermented Herbal Medicine
items: Business Analysis of KJA Hoven's Carp (Leptobarbus hoevenii) Managed by Bumdes Purnama Kampar, North Kampar Sub District, Riau
items: Microplastic Content in the Digestion of Freshwater Mussels (Pilsbryoconcha exilis) at Different Depths in Koto Panjang Reservoir, Riau
items: Analysis of Sea Surface Temperature Distribution and Its Relation to Rainfall in Pariaman City

Potential and Utilization Rate of Indian Scad (Decapterus russelli) Landed at UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province
type: item
description: 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
subject: Articles
  topic: section
subject: Decapterus russelli
  topic: keywords
subject: Indian scad
  topic: keywords
subject: MSY
  topic: keywords
subject: Sustainable potential
  topic: keywords
subject: Utilization rate
  topic: keywords
creator: Vify Ukhwatul
creator: Arthur Brown
creator: Jonny Zain
rights: Copyright (c) 2025 Vify Ukhwatul, Arthur Brown, Jonny Zain (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 288
ending page: 296
doi: 10.31258/jpk.30.3.288-296

Financial Feasibility Analysis of Crab (Portunus pelagicus) Fishing Business in Pasir Limau Kapas District, Rokan Hilir Regency
type: item
description: 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.
subject: Articles
  topic: section
subject: Financial Feasibility
  topic: keywords
subject: Crab
  topic: keywords
subject: Fishing Business
  topic: keywords
creator: M Zulhami
creator: Hazmi Arief
creator: Clara Yolandika
rights: Copyright (c) 2025 M Zulhami, Hazmi Arief, Clara Yolandika (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 350
ending page: 357
doi: 10.31258/

Association of Aquatic Plants and Fish in Lake Bokuok, Aursati Village, Tambang Subdistrict, Kampar Regency, Riau
type: item
description: Lake Bokuok is an oxbow lake located in Aursati Village, Tambang District, Kampar Regency, Riau Province. This lake has undergone changes due to human activities, affecting the existence of aquatic organisms, including plants and fish. This study aims to determine the relationship between aquatic plants and fish in Lake Bokuok. Data collection was carried out in February-March 2025 using a survey method. Aquatic plant samples were collected once for species identification and four times for density calculations, while fish samples were collected four times for fish count calculations. The study results showed differences in aquatic plant density and total fish numbers across the three stations. Among the three stations, four aquatic plant species and four fish species were identified. Station III had the highest aquatic plant density and relative density (57.32 Ind/m²), which also correlated with the highest fish count (59 individuals). Conversely, Station II had the lowest aquatic plant density (25.08 Ind/m²) and the fewest fish (33 individuals). Statistical analysis showed a positive correlation between aquatic plant density and fish abundance, though the relationship was not statistically significant. Water quality in the lake is still considered suitable for supporting aquatic organisms. This study provides an initial overview of the role of aquatic plants in supporting fish life in natural lakes. These results are significant as a basis for water management and the development of sustainable conservation policies to maintain the ecological balance of Lake Bokuok
subject: Articles
  topic: section
subject: Lake Bokuok
  topic: keywords
subject: Aquatic Plants
  topic: keywords
subject: Fish
  topic: keywords
subject: Water Quality
  topic: keywords
creator: Rizky Fauzi Afael
creator: Eddiwan Eddiwan
creator: Isma Mulyani
rights: Copyright (c) 2025 Rizky Fauzi Afael, Eddiwan Eddiwan, Isma Mulyani (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 344
ending page: 349
doi: 10.31258/

Habitat and Density of Crab (Parathelpusha pardus) in the Tanduk River, Rumbio Village, Kampar District, Riau
type: item
description: Freshwater crabs have a life cycle entirely in freshwater and play an essential role in the food chain as both omnivores and detritivores. Some freshwater crabs can only be found in clean water, so they can also be used as bioindicators of water quality. This study aims to determine the habitat and density of crabs in the Tanduk River in Rumbio Village and to investigate the relationship between environmental parameters and the density of P. pardus crabs in this area, Kampar District. The study was conducted from March to April 2024 in Rumbio Village, Kampar District, Kampar Regency, Riau Province. The methods used were surveys and literature reviews. The survey method involved direct field visits to the study site. Sampling was conducted three times over a three-week period. The literature review involved collecting secondary data from previous studies and data obtained from local government offices. Primary data consisted of field data, including crab samples that were collected and identified, as well as water quality data. The study found that the density of P. pardus crabs in the Tanduk River in Rumbio Village was 10 individuals at Station 1, 16 individuals at Station 2, and 29 individuals at Station 3. Various factors, including environmental conditions like vegetation and food availability, influenced this. The habitat characteristics supporting the survival of P. pardus crabs based on water quality measurements in Rumbio Village during the study were temperature 27–28°C, turbidity 12–50 cm, pH 7.5–8.5, dissolved oxygen 5.7–7.2 mg/L, free CO₂ 5–17 mg/L, and phosphate 0.0730–0.1327 mg/L.
subject: Articles
  topic: section
subject: Habitat
  topic: keywords
subject: Density
  topic: keywords
subject: Crabs
  topic: keywords
subject: Rumbio Village
  topic: keywords
creator: Muhdi Azhar
creator: Nur El Fajri
creator: Muhammad Fauzi
rights: Copyright (c) 2025 Muhdi Azhar, Nur El Fajri, Muhammad Fauzi (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 319
ending page: 323
doi: 10.31258/jpk.30.3.319-323

Structure of Mangrove Vegetation Community in the Tidal Area of Siak River, Riau
type: item
description: Global warming is one of the natural phenomena that impacts the flow of the Siak River. Among the impacts are sea level rise and seawater intrusion. These changes also affect the distribution of flora and fauna from the sea into the River. This study aims to determine the structure of mangrove vegetation communities and water quality conditions found in the tidal area of the Siak River. This research was conducted in October 2024. The research location consists of 4 stations, each station was placed in 3 plots following the flow of the River, with a distance of 100 m between each plot. Each plot has a size of 10 x 10 m. This research was conducted using the survey method. The study identified six mangrove species, consisting of 2 true mangroves and four associated mangroves. The density of mangrove vegetation in the research location is categorized as good, with the highest number of 1933.33 ind/ha at stations I and II, and the lowest at 1633.33 ind/ha at station IV. The results of the critical value index indicate that Sonneratia caseolaris plays a vital role in all research stations, with the highest percentage of 252.90% at station II and the lowest 230.20% at station I. The results of the ANOVA test analysis of density between stations showed a significant value. 0.148, which states that there is no significant difference between the four stations. Water quality measurements showed a temperature value of 28-30 °C; salinity 0 ppt, and pH 5.4-6. Sediment types at all stations were dominated by mud. The highest average organic matter was in station I, at 11.90%, while the lowest was in station II, at 6.83%. The value of Total Suspended Solid (TSS) at the study site ranged from 0.0153 to 0.1640 mg/L. Station II was dominated by muddy sand, and station III was dominated by sand with a total sediment organic matter content of 0.46-23.33%. The nitrate content found ranged from 0.0146-0.0583 mg/l, and the phosphate ranged from 0.0465-0.0996 mg/L. The linear regression t…
subject: Articles
  topic: section
subject: mangrove
  topic: keywords
subject: community structure
  topic: keywords
subject: tidal
  topic: keywords
subject: Siak River
  topic: keywords
creator: Masyhuda Hasan
creator: Efriyeldi Efriyeldi
creator: Aras Mulyadi
rights: Copyright (c) 2025 Masyhuda Hasan, Efriyeldi Efriyeldi, Aras Mulyadi (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 366
ending page: 375
doi: 10.31258/

Types and Abundance of Microplastics in Lokan (Geloina erosa) in the Mangrove Ecosystem of Kedabu Rapat Village, Meranti Islands
type: item
description: 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
subject: Articles
  topic: section
subject: Abundance
  topic: keywords
subject: mangrove
  topic: keywords
subject: microplastic
  topic: keywords
subject: Geloina erosa
  topic: keywords
creator: Dinda Maharani Putri
creator: Irvina Nurrachmi
creator: Efriyeldi Efriyeldi
rights: Copyright (c) 2025 Dinda Maharani Putri, Irvina Nurrachmi, Efriyeldi Efriyeldi (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 358
ending page: 365
doi: 10.31258/

Potential and Utilization Rate of Anchovy (Stolephorus sp) Landed at UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province
type: item
description: Open-access fishery resources encourage fishing competition that can cause stock decreases and overfishing; therefore, bioeconomic management based on sustainability potential and utilization rate assessments is needed to maintain sustainability. This research aims to determine anchovies' potential and utilization rate (Stolephorus sp) at the UPTD Fishery Port Region I, Carocok Tarusan, West Sumatra Province. The research was conducted in December 2024 using secondary data in the form of annual catch and fishing effort for 2016-2023, obtained from relevant institutions. The methods used were the Catch Per Unit Effort (CPUE) and surplus production models of Schaefer and Fox. Based on the results of the analysis, the Schaefer surplus production model was the most appropriate model for analyzing the potential of anchovies at the Carocok Tarusan Fishing Port. This model estimates MSY at 445,211.65 kg/year with an optimum effort of 6,547 trips/year. JTB is estimated at 356,169.32 kg/year. During the research period, the average utilization rate of anchovies reached 54%, showing that fish stocks were in a moderate state. This means anchovy resources have not been overexploited and can still be utilized optimally. The exploitation rate of 33% indicates that there are still opportunities to increase fishing efforts while continuing to apply the principles of sustainable management.
subject: Articles
  topic: section
subject: Anchovy
  topic: keywords
subject: CPUE
  topic: keywords
subject: MSY
  topic: keywords
subject: Stolephorus sp.
  topic: keywords
subject: Sustainable potential
  topic: keywords
creator: Arthur Brown
creator: Vify Ukhwatul
rights: Copyright (c) 2025 Arthur Brown, Vify Ukhwatul (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 282
ending page: 287
doi: 10.31258/jpk.30.3.282-287

Density and Distribution of Gastropods in Mangrove Forests of Concong Dalam Village, Indragiri Hilir, Riau Province
type: item
description: Gastropods are mangrove organisms that act as bioindicators in mangrove ecosystems. Mangroves are called productive areas because they are rich in organic matter, which is a source of food and shelter for various biota, such as molluscs and other organisms. Human-induced pressure will cause damage to the mangrove ecosystem. The destruction of the mangrove ecosystem will affect the life of all biota that live in it, including gastropods. This study aims to determine the density and distribution pattern of gastropods in the mangrove area of Concong Dalam Village. This research was carried out in August-September 2024 in Concong Dalam Village. The method used in this study is the survey method. The data obtained is then calculated and analyzed. The results of the study show that there are 11 species of gastropods, nine genera, and six families, including Potamididae (3 types), Neritidae (2 types), Littorinidae (2 types), Ellobidae (1 type), Melogenidae (1 type), and Muricidae (1 type). The six types of mangroves found in this study are Rhizophora apiculata, R. mucronata, Bruguiera cylindrica, Avicennia alba, Sonneratia alba, and Nypa fruticans. The density value of gastropods obtained in Concong Dalam Village ranges from 2.67 – 11.39 ind/m2. The distribution pattern found in Concong Dalam Village is uniform, with an id value of 0.31-0.44. The density of mangroves in Concong Dalam Village ranges from 600 to 1967 p/ha, with the damage criteria being very good
subject: Articles
  topic: section
subject: Density
  topic: keywords
subject: Distribution Pattern
  topic: keywords
subject: Gastropods
  topic: keywords
subject: Mangrove Forest
  topic: keywords
creator: Adriman Adriman
creator: Muhammad Fauzi
creator: Glori Miracle
rights: Copyright (c) 2025 Adriman Adriman, Muhammad Fauzi, Glori Miracle (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 324
ending page: 330
doi: 10.31258/

Existing Condition of Lubuk Larangan Management as a Form of Local Wisdom in Padang Sawah Village, Kampar Kiri Subdistrict, Kampar Regency, Riau Province
type: item
description: Lubuk Larangan is a local wisdom initiative aimed at preserving fish resources and aquatic ecosystems. Natural resource and environmental management based on local wisdom, such as the Practices in Lubuk Larangan, Padang Sawah Village. This study aims to determine the current conditions of the Subayang River in Padang Sawah Village. This research was conducted in May–June 2024 in Padang Sawah Village, Kampar Kiri Subdistrict, Kampar Regency, Riau Province. The research method was a descriptive survey approach, utilizing data collection techniques such as observation, interviews, and physical-chemical parameter measurements. The materials and tools used were based on the parameters measured, namely physical-chemical and questionnaires. The results showed that Lubuk Larangan in Padang Sawah Village is still managed according to customary law by the ninik mamak. The community of Padang Sawah Village strongly supports the existence of Lubuk Larangan and wants to be more actively involved in its preservation. Lubuk Larangan in Padang Sawah Village has a very high level of community awareness, with a respondent participation index of 0.98. The water quality measurements obtained were a temperature of 29-30°C, brightness of 55-72 cm, depth of 1.7-2.2 m, current speed of 0.66-0.67 m/s, pH of 6.93-7.25, and dissolved oxygen of 3.40-4.10 mg/L. The management of Lubuk Larangan in Padang Sawah Village is supported by water quality that is still natural
subject: Articles
  topic: section
subject: Local wisdom
  topic: keywords
subject: Management
  topic: keywords
subject: Participation
  topic: keywords
subject: Perception
  topic: keywords
creator: Rosalina Tumanggor
creator: Eni Sumiarsih
creator: Eko Prianto
rights: Copyright (c) 2025 Rosalina Tumanggor, Eni Sumiarsih, Eko Prianto (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 297
ending page: 304
doi: 10.31258/jpk.30.3.297-304

The Analysis of CPUE and Factors Affecting the Catch of Tonda Fishing at Bungus Ocean Fishing Port in West Sumatra
type: item
description: Catch per Unit Effort (CPUE) analysis assesses fishing productivity and indicates fish stock abundance in waters. CPUE values represent the ratio between catch and fishing effort. This study aims to determine CPUE values and analyze the production factors influencing catch. The research method used a survey method with purposive sampling techniques. Data were analyzed using CPUE analysis, multiple linear regression, and classical assumption tests. The results showed that tuna fishing production at PPS Bungus during the 2018–2023 period reached 1,053.09 tons, with catches dominated by skipjack tuna and yellowfin tuna. The highest CPUE value occurred in 2019 at 1.49 tons/trip, and the lowest in 2022 at 0.86 tons/trip. The production factors that significantly influenced catch yields were the number of crew members, engine power, and captain experience, while vessel size and trip duration had a negative influence. The coefficient of determination (R²) value of 0.356 indicates that the research variables only explain part of the variation in catch results. This finding underscores the importance of optimizing production factors and managing fishing efforts to sustain tuna fishing productivity at PPS Bungus
subject: Articles
  topic: section
subject: Tonda Fishing
  topic: keywords
subject: Catch
  topic: keywords
subject: Production Factors
  topic: keywords
subject: CPUE
  topic: keywords
creator: Indria Astuti
creator: Isnaniah Isnaniah
creator: Jonny Zain
rights: Copyright (c) 2025 Indria Astuti, Isnaniah Isnaniah, Jonny Zain (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 338
ending page: 343
doi: 10.31258/

The Effect of Using Different Probiotic Products in Biofloc Systems on the Growth of Snakehead (Channa striata)
type: item
description: Snakehead (Channa striata) is one of the popular freshwater commodities in Indonesia, but its cultivation is still relatively low due to its relatively slow growth. Biofloc technology, which relies on microorganisms such as probiotic bacteria, is a potential solution to increase cultivation efficiency. This study aims to evaluate the effect of using various types of probiotics in the biofloc system on the growth of cork fish and to determine which type of probiotic is most effective. The research was conducted at the Cultivation Technology Laboratory, Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Riau, for 56 days from August to October 2024. The method used was experimental with a completely randomized design (CRD), using four treatments (P0 = control, P1 = Probio-7, P2 = Multi-Cell, P3 = Aquaenzyme) and three replications. The results showed that probiotics had a significant effect on growth parameters. The best treatment was P2 (probiotic Sel Multi), which produced the highest absolute weight (2.97 g), absolute length (3.63 cm), specific growth rate (2.02%), lowest feed conversion ratio (1.65), and highest survival rate (86.66%).
subject: Articles
  topic: section
subject: Striped Snakehead
  topic: keywords
subject: Probiotics
  topic: keywords
subject: Bioflocs
  topic: keywords
subject: Growth
  topic: keywords
subject: Culture system
  topic: keywords
creator: Alfadita Zahlan
creator: Rusliadi Rusliadi
creator: Iskandar Putra
rights: Copyright (c) 2025 Alfadita Zahlan, Rusliadi Rusliadi, Iskandar Putra (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 389
ending page: 395
doi: 10.31258/

Factors Affecting the Income of Capture Fishermen in Kenagarian Tiku V Jorong, Tanjung Mutiara District, Agam Regency, West Sumatra
type: item
description: Tiku V Jorong is a marine coastal area where most of the population relies on the fisheries sector for their livelihood, particularly marine capture fisheries, which serve as their primary source of income. This research, conducted in February 2025, aims to analyze the factors influencing the income of shrimp capture fishermen in Jorong Muaro Putuih, Kenagarian Tiku V Jorong, Tanjung Mutiara District, Agam Regency, West Sumatra Province. The research method used is a quantitative approach with a survey of 25 respondents who are shrimp capture fishermen using gillnet fishing gear. The data were analyzed using multiple linear regression to examine the effect of independent variables, namely, operational costs, work experience, and catch volume, on the dependent variable, which is fishermen's income. The results of this study show that all three variables significantly affect fishermen's income. Catch volume and work experience have a positive influence, while operational costs have a negative effect on income
subject: Articles
  topic: section
subject: operational costs
  topic: keywords
subject: work experience
  topic: keywords
subject: catch volume
  topic: keywords
creator: Hadya Alifhia Rahmah
creator: Zulkarnaini Zulkarnaini
creator: Hazmi Arief
rights: Copyright (c) 2025 Hadya Alifhia Rahmah, Zulkarnaini Zulkarnaini, Hazmi Arief (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 376
ending page: 381
doi: 10.31258/

Analysis of Fishing Business Using Gill Net Fishing Gear in Bogak Village, Tanjung Tiram District, Batu Bara Regency, North Sumatra Province
type: item
description: The majority of the population of Bogak Village works as fishermen, with 76% of them involved in fishing. The dominant fishing gear used is gill nets, with a total of 500 units. This study was conducted in Bogak Village in 2023 to determine the investment spent by fishermen, the total costs, income, and profits they obtain, and to analyze the feasibility of fishing efforts using gill nets. This research method is a survey method with 21 fishermen as respondents. The results indicate two criteria for the type of fishing business: using 5 GT and 10 GT fleets. The investment for a 5 GT fleet is IDR 78,991,375.00, while a 10 GT fleet costs IDR 232,150,972.22. The total cost of the 5 GT fleet is IDR 525,031,138.89 / year, and the 10 GT fleet is IDR 776,833,809.52 / year. The income of the 5 GT fleet is IDR 581,760,000.00/year, and the 10 GT fleet is IDR 904,106,666.67/year. The profit of the 5 GT fleet is IDR56,728,861.11/year, and the 10 GT fleet is IDR127,272,857.14/year. Based on the feasibility analysis of the gillnet fishing business, both fleet sizes (5 GT and 10 GT) have proven to be profitable with an R/C value above 1. This indicates that the company is feasible to continue and develop. Overall, investing in a larger fleet provides more promising economic prospects for fishermen
subject: Articles
  topic: section
subject: Gillnet Fishing Gear
  topic: keywords
subject: Business Analysis
  topic: keywords
subject: Fishing
  topic: keywords
creator: Hendrik Hendrik
creator: Chicka Willy Yanti
creator: Rahmi Julita Hotmaria Br. Silitonga
rights: Copyright (c) 2025 Hendrik Hendrik, Chicka Willy Yanti, Rahmi Julita Hotmaria Br. Silitonga (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 312
ending page: 318
doi: 10.31258/jpk.30.3.312-318

Strategy of Developing Green Talao Park Marine Tourism Object in Nagari Ulakan Padang Regency, Pariaman, West Sumatra
type: item
description: Indonesia is a country with enormous tourism potential, boasting more than 17,000 islands and a tropical climate that supports natural beauty on land and sea. However, based on data from the World Tourism Organization, the number of foreign tourists visiting Indonesia is still low compared to other countries such as Malaysia, Thailand, and Europe. This shows that Indonesia's tourism management has not been optimized. This study aims to identify and formulate a strategy for developing potential marine tourism sites in Green Talao Park, Nagari Ulakan, Padang Pariaman Regency. This study uses a qualitative approach with survey and interview methods. They use purposive sampling and accidental methods. The study was conducted by direct observation in the field. The results of this study indicate that the strategy for developing marine tourism in Green Talao is to utilize natural attractions to draw visitors and increase their numbers. Additionally, there is a need to improve the quality of human resources for the management and development of the area. Carrying capacity calculations can provide a maximum limit on the number of visitors that can be accommodated in the area. There is a need for socialization through counseling to provide an understanding of environmental pollution and the impacts of managing and utilizing potential at the Green Talao Park location
subject: Articles
  topic: section
subject: SWOT analysis
  topic: keywords
subject: Ecotourism
  topic: keywords
subject: Marine tourism
  topic: keywords
creator: Andini Aulia Putrima
creator: Lamun Bathara
creator: Willy Yanti
rights: Copyright (c) 2025 Andini Aulia Putrima, Lamun Bathara, Willy Yanti (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 382
ending page: 388
doi: 10.31258/

Growth Performance Cachama (Colossoma macropomum) Fished by Polyculture with Taiwan Kijing (Anodonta woodiana)
type: item
description: Cachama (Colossoma macropomum) is a freshwater fishery commodity with high economic value, but water quality in cultivation is often an obstacle. The utilisation of natural biofilters, such as Taiwanese mussels (Anodonta woodiana), in a polyculture system is expected to improve water quality and increase fish growth performance. This study aims to evaluate the effect of different numbers of Taiwanese mussels in a polyculture system on the growth of Cachama. The study was conducted for 56 days using a completely randomised design (CRD) with four treatments: P0 (without biofilter), P1 (14 mussels), P2 (19 mussels), and P3 (24 mussels), with three replications for each treatment. The parameters observed include absolute weight growth, absolute length, specific growth rate, survival, and water quality. The results showed that the P3 treatment gave the best results with an absolute weight of 8.25 g, an absolute length of 4.78 cm, and a specific growth rate of 2.02% per day. The use of Taiwanese mussel biofilters significantly improved water quality and growth of cachama.
subject: Articles
  topic: section
subject: Cachama
  topic: keywords
subject: Polyculture
  topic: keywords
subject: Biofilter
  topic: keywords
subject: Taiwanese Mussel
  topic: keywords
creator: Praduta Zaky
creator: Iskandar Putra
creator: Heri Masjudi
rights: Copyright (c) 2025 Praduta Zaky, Iskandar Putra, Heri Masjudi (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 305
ending page: 311
doi: 10.31258/jpk.30.3.305-311

Bandung City's Cikapundung River Water Quality Status Using Pollution Index for Fisheries Development
type: item
description: The Cikapundung River currently supports fisheries activities through carp cultivation, utilizing the river flow. Currently, domestic waste discharge, driven by the increasing growth of settlements around the river, has the potential to affect the water quality in the Cikapundung River. Information is needed regarding the quality status of the Cikapundung River so that management can be carried out according to its designation. This study was conducted in January 2024 using the pollution index (IP) method to measure its water quality. The research location was divided into five stations based on anthropogenic activities at each location. The water quality status of the Cikapundung River is classified as lightly polluted according to class II and class III quality standards. The Biochemical Oxygen Demand (BOD) and Total Suspended Solid (TSS) parameters are the causes of the high IP value in this study. The highest TSS and BOD values ​​are at station 4, which is a densely populated area with fisheries activities. The Cikapundung River can be used for fisheries activities on condition that eurytolerant fish are used.
subject: Articles
  topic: section
subject: Cikapundung River
  topic: keywords
subject: Fisheries
  topic: keywords
subject: Pollution Index
  topic: keywords
creator: Robby Alfiansyah
creator: Zahidah Hasan
creator: Kiki Haetami
creator: Asep Sahidin
creator: Heti Herawati
rights: Copyright (c) 2025 Robby Alfiansyah, Zahidah Hasan, Kiki Haetami, Asep Sahidin, Heti Herawati (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 403
ending page: 408
doi: 10.31258/

The Effect of Stocking Density Differences on the Survival and Growth of Nile Tilapia (Oreochromis niloticus) Juveniles in a Bucket Aquaculture System (Budikdamber)
type: item
description: Nile tilapia is one of Indonesia's leading aquaculture commodities, with strong potential for development to support food security and improve community welfare. This study aimed to analyze the effect of different stocking densities and to determine the optimal density that supports the survival and growth of Nile tilapia juveniles reared in the Budikdamber system. The research method used was an experimental method with a Completely Randomized Design (CRD), consisting of five treatments and three replications. The treatments were as follows: (A) stocking density of 15 fish/70 L (control), (B) 20 fish/70 L, (C) 25 fish/70 L, (D) 30 fish/70 L, and (E) 35 fish/70 L, maintained for 40 days with a feeding rate of 3% of the total biomass. Probiotics were applied at a dose of 0.8 ml/L through the culture water to maintain good water quality. The results showed that treatment B (20 fish/70 L) produced the best outcomes in terms of growth and survival, with an average absolute length gain of 2.03 ± 0.26 cm, absolute weight gain of 8.52 ± 1.11 g, a positive allometric length-weight relationship, a survival rate of 91.7%, a specific growth rate of 1.68 ± 0.17%, a feed conversion ratio of 1.59 ± 0.24, and water quality parameters within the acceptable range based on the Indonesian National Standard (SNI).
subject: Articles
  topic: section
subject: Budikdamber
  topic: keywords
subject: Nile Tilapia
  topic: keywords
subject: Survival Rate
  topic: keywords
subject: Water Spinach
  topic: keywords
creator: Jeny Trysta Anjany
creator: Roffi Grandiosa Herman
creator: Rita Rostika
creator: Irfan Zidni
rights: Copyright (c) 2025 Jeny Trysta Anjany, Roffi Grandiosa Herman, Rita Rostika, Irfan Zidni (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 331
ending page: 337
doi: 10.31258/

Comparison of Wire Trap (Temilar) Catch Yields between Daytime and Nighttime Operations in Tarikan Village, Muaro Jambi Regency
type: item
description: The purpose of this study was to determine the differences in catch results of wire traps (temilar) between daytime and nighttime operations. The research was conducted in the waters of the Kumpeh River, Tarikan Village, Muaro Jambi Regency. The method used in this study was experimental fishing and simple random sampling with 15 replications, using two treatments: daytime and nighttime operations. Based on the results of the survey, nine species of fish were caught. The dominant species was the lambak (Labiobarbus ocellatus), with a total of 212 individuals and an overall catch of 814 individuals obtained during nighttime trap operations. The heaviest catch was the tembakang (Helostoma temminckii), with an individual weight of 7,266 grams and a total weight of 28,871 g, also obtained from the use of wire traps (temilar) at night. The t-test results showed a significant difference (P < 0.05) in both the number and weight of catches between daytime and nighttime wire trap (temilar) operations. Based on these findings, it can be concluded that nighttime operation of wire traps (temilar) yields higher catches, both in number and total weight, compared to daytime operations
subject: Articles
  topic: section
subject: Wire Trap
  topic: keywords
subject: Operational Time
  topic: keywords
subject: Kumpeh River
  topic: keywords
creator: Aditya Eka Apriliyanto
creator: Bagus Pramusintho
creator: Lisna Lisna
rights: Copyright (c) 2025 Aditya Eka Apriliyanto, Bagus Pramusintho, Lisna Lisna (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-12-04
publication date: 2025-12-04
starting page: 396
ending page: 402
doi: 10.31258/

Comparative Study of Growth Circle Patterns in Otoliths of Guppy Fish (Poecilia reticulata) from Areas Polluted with Domestic Sewage
type: item
description: Guppy fish (Poecilia reticulata) inhabit polluted water, such as domestic waste-filled ditches in residential areas, as well as in rivers. These two habitats have different water qualities, which affects the growth of the fish; this is reflected in the pattern of growth rings in the otoliths. To determine the differences in growth ring patterns of otoliths in guppies living in ditches versus the river, a study was conducted in March and April 2025. Fish were caught using a scoop net once every 2 weeks, three times. The fish were measured, and otoliths were taken. They were then attached to objects made of glass and manually shaved using a smooth grindstone. The growth rings in the otolith were observed using a microscope. Results showed that 103 fish were caught, 50 from the trench and 53 from Tangkerang River. The size of the fish caught was 18-31 mm from the trench and 17-31 mm from the river. In fish with the same total length, the otoliths from the river were longer and wider (0.5-1 mm in length and 0.4-0.95 mm in width), whereas those from the trench were shorter (0.42-0.85 mm in length and 0.4-0.67 mm in width). The maximum number of dark rings on the otoliths of fish from the ditch was 3, whereas from the river, it was 4. There were 27 fish from the river and 18 fish from the trench that had no dark ring in the otolith. The data obtained show that the growth of guppies in the Tangkerang River is better than in the Purigiam Housing trench
subject: Articles
  topic: section
subject: Dark Ring
  topic: keywords
subject: Polluted Water
  topic: keywords
subject: Ditch
  topic: keywords
subject: Fish Growth
  topic: keywords
creator: Marchya Audhya Wulandary
creator: Ridwan Manda Putra
creator: Windarti Windarti
rights: Copyright (c) 2025 https://creativecommons.org/licenses/by/4.0
date: 2025-06-05
publication date: 2025-06-05
starting page: 275
ending page: 281
doi: 10.31258/jpk.30.2.275-281

Comparative Study of Cultivation of Leptobarbus hoeveni and Wallago sp in Ranah Village, Kampar Regency, Riau
type: item
description: This research was conducted in Ranah Village, Kampar Regency, Riau Province, in April 2024 to analyze the comparison of production facility use and cost structure, income, and business feasibility of hoven carp and tapah enlargement farming. The research method employed in this study is the survey method, which involves direct observation of objects in the field and the collection of data related to the research conducted. The population in this study consisted of 15 fish farmers of hoven carp and tapah. The data obtained through descriptive analysis explain the differences in product facilities for cultivating the two fish, with a focus on seeds and feed. The analysis of income in tapah farming is higher, at IDR 119,098,750, than the income of hoven carp farming, at IDR 43,680,909
subject: Articles
  topic: section
subject: Income
  topic: keywords
subject: Means of Production
  topic: keywords
subject: Comparative
  topic: keywords
creator: Lendiana Nadeak
creator: Hazmi Arief
creator: Zulkarnaini Zulkarnaini
rights: Copyright (c) 2025 https://creativecommons.org/licenses/by/4.0
date: 2025-06-03
publication date: 2025-06-03
starting page: 268
ending page: 274
doi: 10.31258/jpk.30.2.268-274

Analysis of the Relationship between Organic Material Content and Sediment Grain Size with Macrozoobentos Abundance in Sungai Selari Village, Bengkalis Regency
type: item
description: Sungai Selari Village is an area in Riau Province that features a high density of water activities, including a port where many fishing boats are moored and also serves as a transportation route for fishermen seeking fish. This activity can cause water pollution, which leads to the silting of waters through sedimentation. The activity of sediment input into a body of water can cause changes in the ecosystem, including alterations in sediment texture, organic matter content, and the abundance of macrozoobenthos biota. One organism that can be affected by differences in ecosystems is the macrozoobenthos due to its sedentary nature. This study aims to determine the type of sediment, grain size, and organic matter content, as well as their relationship with macrozoobenthos abundance. This research was conducted in March and April 2023, utilizing purposive sampling techniques at four stations in total. The samples taken were sedimentary substrates and macrozoobenthos. The results indicated that the size of the dominating sediment stalk, specifically the mud fraction, ranged from 14.72% to 71.25%. The types of macrozoobenthos found are grouped into two classes, namely Gastropods and bivalves. Individual abundances range from 0.3 - 4.4 ind/m2, with the highest abundance occurring at station 4 and the lowest occurring at station 1. The organic matter content ranges from 9.27- 34.2%. The relationship between organic matter content and macrozoobenthos abundance exhibits a moderate correlation of 0.506. The relationship between sediment grain size and macrozoobenthos abundance shows a fairly close correlation of 0.544
subject: Articles
  topic: section
subject: Macrozoobentos Abundance
  topic: keywords
subject: Sediment Grain
  topic: keywords
subject: Organic Matter
  topic: keywords
creator: Adhita Fiky Fahira
creator: Mubarak Mubarak
creator: Afrizal Tanjung
rights: Copyright (c) 2025 Adhita Fiky Fahira, Mubarak Mubarak, Afrizal Tanjung https://creativecommons.org/licenses/by/4.0
date: 2025-01-30
publication date: 2025-01-30
starting page: 13
ending page: 17
doi: 10.31258/jpk.30.1.13-17

Risk and Income Analysis of Vaname Shrimp Cultivation Business (Litopenaeus vannamei) in Bantan District, Bengkalis Regency
type: item
description: This research was conducted in April 2025 in Bantan District, Bengkalis Regency. This study aimed to calculate the income of vaname shrimp farming and analyze the production and income risk of vaname shrimp farming. The survey method was used in this study. The risk measures used include variance, standard deviation, coefficient of variation, and lower limit, while business income is analyzed using income analysis. The number of samples was 26 respondents, with the selection of census technique samples. The results showed that the respondents' average production of vaname shrimp was 660,558.85 kg/Ha, and the average income was IDR614,516,253 / ha. The coefficient of variation of the results of production risk analysis is 0.0887, with a lower limit of 20,896 kg/Ha. The coefficient of variation from the results of the income risk analysis is 0.1139 with a lower limit of IDR474,445,189/Ha. From the study results, the risk to the production and income of Vaname shrimp farming is relatively low
subject: Articles
  topic: section
subject: Vaname Shrimp
  topic: keywords
subject: Income
  topic: keywords
subject: Production
  topic: keywords
subject: Risk
  topic: keywords
creator: Maya Sarah
creator: Hazmi Arief
creator: Chicka Willy Yanti
rights: Copyright (c) 2025 Maya Sarah, Hazmi Arief, Chicka Willy Yanti (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 261
ending page: 267
doi: 10.31258/jpk.30.2.261-267

Enrichment of Fish Resources with Artificial Habitat in Sepunjung Lake Rantau Baru Village, Pangkalan Kerinci, Pelalawan
type: item
description: This research aims to determine the types of fish caught in Lake Sepunjung and in the Artificial Habitat equipment at Lake Sepunjung, Rantau Baru Village, Pangkalan Kerinci, Pelalawan, Riau Province. This research was conducted in January-March 2024 in Lake Sepunjung, Rantau Baru Village, Pangkalan Kerinci, Pelalawan, Riau. This research used a survey method to obtain primary data from water quality measurements and fish caught. Sampling was carried out every 2 weeks for 3 months. The results of this research obtained the value of the composition of the most common type of fish, namely the Oxgaster anomalura, with the highest percentage of 44.13%, and in Artificial Habitat, namely Ompok hypothalamus fish, with the highest percentage of 28%. The value of the diversity index (H') in Lake Sepunjung is 2.95 (moderate), and the value in Artificial Habitat is 2.83 (moderate). The value of the uniformity index (E) in Lake Sepunjung is 0.622 (low), and the value in Artificial Habitat is 0.894 (low). The value of the dominance index (C) obtained in Lake Sepunjung, namely 0.233 (low), and the value in Artificial Habitat, namely 0.165 (low)
subject: Articles
  topic: section
subject: Artificial Habitat
  topic: keywords
subject: Lake Sepunjung
  topic: keywords
subject: Enrichment of Fish Resources
  topic: keywords
creator: Niken Yufira Utami
creator: Ridwan Manda Putra
creator: Budijono Budijono
rights: Copyright (c) 2025 Niken Yufira Utami, Ridwan Manda Putra, Budijono Budijono (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 257
ending page: 260
doi: 10.31258/jpk.30.2.257-260

Population Structure of Polymesoda expansa Shellfish in Mangrove Forest in Banglas Village, Meranti Islands
type: item
description: Lokan (Polymesoda expansa) is a bivalve in mangrove forest areas with important ecological and economic values. The lokan population plays a role in maintaining water quality and is a source of livelihood for coastal communities. This study aims to analyze the abundance, distribution patterns, and frequency distribution of individual sizes of P. expansa in the mangrove forest of Banglas Village, Meranti Islands Regency. The research was conducted in December 2024 using a survey method to determine station locations by purposive sampling. Sampling was conducted at three stations, each consisting of three transects with plots measuring 1 × 1 m². The results showed that the highest abundance was found at Station III (±16.33 ± 5,508 ind/m²) and the lowest at Station II (8.33 ± 2,082 ind/m²). The distribution pattern of lokan at all stations is clustered (Morisita index value> 1). The frequency distribution of individual sizes showed the dominance of sizes 3.40-3.89 cm with 21 individuals. Abundance and distribution patterns of lokan are influenced by habitat conditions, human activities, and food availability. ANOVA test results showed no significant differences in abundance between stations, but there were significant differences between subzones. Knowledge of the population structure of P. expansa is vital for sustainable resource management in mangrove ecosystems
subject: Articles
  topic: section
subject: Abundance
  topic: keywords
subject: Mangrove forest
  topic: keywords
subject: Polymesoda expansa
  topic: keywords
creator: Hafidah Novi Anggraini
creator: Syafruddin Nasution
creator: Afrizal Tanjung
rights: Copyright (c) 2025 Hafidah Novi Anggraini, Syafruddin Nasution, Afrizal Tanjung (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 227
ending page: 232
doi: 10.31258/jpk.30.2.227-232

Density of Escherichia coli Bacteria in Blood Clams (Anadara granosa) in Anak Setatah Village, Meranti Islands Regency, Riau
type: item
description: Blood clams are soft-bodied animals that live sessile and obtain food by filtering (filter feeders). This results in many microorganisms accumulating in the body of the blood clams, one of which is the coliform bacteria group. Coliform bacteria are divided into two types, namely fecal coliform and non-fecal coliform. Fecal coliform comes from animal and human feces, such as Escherichia coli. According to SNI 01-7388-2009, the MPN value of E. coli bacteria for fresh Mollusca, Crustaceans, and Echinodermata is <3/g. This study aimed to calculate the density of E. coli bacteria in blood clams. This study was conducted from December 2024 to February 2025. Sampling was conducted at the lowest ebb with one transect consisting of 3 plots measuring 1 × 1m². The MPN method is a method for analyzing coliform bacteria and E. coli. The results of the estimation test obtained at station 1, namely the Tebing Dian Beach Area, ranged from 7-10 MPN/g with an average of 12.6 MPN/g and station 2, namely the "Cinta Mangrove" Tourism Area, ranged from 4-15 MPN/g with an average of 10 MPN/g. While the results of the estimation test obtained at station 1 ranged from 3-4 MPN/g with an average of 2.3 MPN/g, stations 2 ranged from 3 MPN/g with an average of 1.0 MPN/g. These results indicate that the abundance of E. coli bacteria in blood clams does not exceed the quality standards set based on SNI 01-7388-2009
subject: Articles
  topic: section
subject: Density
  topic: keywords
subject: Blood Clams
  topic: keywords
subject: Coliform
  topic: keywords
subject: E. coli
  topic: keywords
subject: MPN Method
  topic: keywords
creator: Melysa Rahmanda
creator: Feliatra Feliatra
creator: Nursyirwani Nursyirwani
rights: Copyright (c) 2025 Melysa Rahmanda, Feliatra Feliatra, Nursyirwani Nursyirwani (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 212
ending page: 218
doi: 10.31258/jpk.30.2.212-218

The Impact of Sand and Stone Mining on the Width of the Kampar River in Tambang District, Kampar
type: item
description: The Kampar River has enormous benefits for people's lives, including the availability of non-renewable resources such as sand and stone, which are utilized without permission as raw materials for building. The high demand for river sand and stone and modern sand mining technology exacerbate environmental impacts, especially the width of the Kampar River. This study was conducted to determine the impact of changes in river width caused by illegal sand and stone mining activities in the Kampar River. This research uses a quantitative approach with direct observation methods, interviews, and literature studies. This research was conducted from May to August 2024 in Padang Luas Village, Terantang Village, Parit Baru Village, and Kualu Village, Tambang District, Kampar Regency. The results of this study indicate that illegal sand and stone mining activities in the Kampar River cause significant widening of the river, in addition to increasing turbidity and siltation of the river due to cliff collapse. The impact of changes in river width is worst in Parit Baru Village, which has the most mining locations compared to the other three villages. The highest turbidity value is found at station 3, and the shallowest river depth is at station 2. Illegal sand and stone mining has a real negative impact on the environment, especially on the physical condition of the Kampar River, which is marked by the siltation and widening of the river from year to year.
subject: Articles
  topic: section
subject: River widening
  topic: keywords
subject: Kampar River
  topic: keywords
subject: Illegal sand mining
  topic: keywords
creator: Syofian Hadi
creator: Budijono Budijono
creator: Aras Mulyadi
rights: Copyright (c) 2025 Syofian Hadi, Budijono Budijono, Aras Mulyadi (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 239
ending page: 244
doi: 10.31258/jpk.30.2.239-244

Histopathology of Gills and Liver of Tilapia (Oreochromis niloticus) Infected with Streptococcus agalactiae and Fed with Fermented Herbal Medicine
type: item
description: Streptococcus agalactiae is a pathogen that causes significant losses in tilapia (Oreochromis niloticus) aquaculture. One alternative control is the use of natural ingredients such as fermented herbs. This study aims to analyze changes in the histopathological structure of the gills and liver of tilapia fish fed with feed containing fermented herbs after being infected with S. agalactiae. The research was conducted from March to December 2023 at the Laboratory of Parasites and Fish Diseases, Faculty of Fisheries and Marine Sciences, Universitas Riau and Bukittinggi Veterinary Center. The method used was a one-factor, completely randomized design (CRD) with five treatments and three replicates. The treatments consisted of negative control (Kn), positive control (Kp), and three feed treatments with fermented herbal medicine doses of 100 (P1), 125 (P2), and 150 mL/kg feed (P3). S. agalactiae infection was carried out on day 31 at a dose of 10⁸ CFU/mL. The results showed that the P3 treatment gave the best results, characterized by minimal damage to gill tissue (only hypertrophy) and liver (mild vacuolar degeneration) and the highest survival rate of 83.33%. In conclusion, adding fermented herbal medicine at a dose of 150 mL/kg feed can increase the immunity of tilapia against S. agalactiae infection, as shown through the improvement of organ tissue structure and improved survival
subject: Articles
  topic: section
subject: Fermented Herbal Medicine
  topic: keywords
subject: Streptococcus agalatiae
  topic: keywords
subject: Histology
  topic: keywords
creator: Romensius Anggi AW Siallagan
creator: Henni Syawal
creator: Morina Riauwaty
rights: Copyright (c) 2025 Romensius Anggi AW Siallagan, Henni Syawal, Morina Riauwaty (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 219
ending page: 226
doi: 10.31258/jpk.30.2.219-226

Business Analysis of KJA Hoven's Carp (Leptobarbus hoevenii) Managed by Bumdes Purnama Kampar, North Kampar Sub District, Riau
type: item
description: The success of Hoven's carp (Leptobarbus hoevenii) production inputs determines fish farming. One of these production inputs is the availability of seeds for floating net cage cultivation. Hoven's carp are maintained in this KJA, and they are fed twice a day to produce large and healthy Hoven’s carp. Hoven’s carp fish harvest is directly sold to tauke or collectors. This study analyzes the investment, business feasibility, and business constraints of KJA Hoven's carp fish in BUMDes Purnama Kampar. The survey method used 15 respondents using a purposive sampling technique consisting of 1 Director, 1 Secretary, 1 Treasurer, 1 Head of Unit, and 11 Members of BUMDes Purnama Kampar. The types of data collected are primary data and secondary data. Data obtained from interviews, questionnaires, and literature. From the results of research with KJA size 11×4×3.4 (149.6 m3), a total investment of KJA fish business of IDR 718,135,000 was obtained, business revenue of IDR 888,740,000/year, and net profit of IDR 437,971,000 / year. This business is only conducted once a harvest/year. The profit is divided into 50% for BUMDes members and 50% for BUMDes as the business manager. The RCR value of 1.9, FRR of 23.14%, and PPC of 4.3 years indicate that the business is feasible and the capital returns in 4.3 years. The primary constraints are disease attacks, low fish selling prices, and oversupply
subject: Articles
  topic: section
subject: Investment
  topic: keywords
subject: Business feasibility
  topic: keywords
subject: Profit sharing system
  topic: keywords
creator: Betri Dea Astari
creator: Darwis Darwis
creator: Eni Yulinda
rights: Copyright (c) 2025 Betri Dea Astari, Darwis Darwis, Eni Yulinda (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 162
ending page: 167
doi: 10.31258/jpk.30.2.162-167

Microplastic Content in the Digestion of Freshwater Mussels (Pilsbryoconcha exilis) at Different Depths in Koto Panjang Reservoir, Riau
type: item
description: Microplastics are small pieces of plastic that can pollute the environment. This study aims to determine the types of microplastics in the digestion of freshwater kijing based on different stocking densities and water depths. This research was carried out from February to April 2024. Using the experimental method with a one-factor Group Random Design. Sampling of the kijing was observed after 2 weeks of laying according to the specified depth, and then the abundance of microplastics in the digestion of freshwater kijing was examined. Water quality parameters are measured by temperature, brightness, and pH. The study found five microplastic types: fiber, fragments, films, granules, and pellets. The most common type of microplastic found at all three different depths is the type of film. The microplastic abundance found at all three depths in order is 5.2, 5,4 and 6 particles/ind. From the ANOVA results, the depth has a p-value of 0.00850, which means that the p-value > 0.005 does not show any difference between depth data. While the p-value of the treatment is 0.00084, this means that the p-value of <0.005 is the difference between the treatment data. Treatments consisting of 1kg, 2kg, and 3kg had different abundance data in each treatment. This means that there are significantly different results by the treatment of microplastic abundance data in freshwater mussel
subject: Articles
  topic: section
subject: Pilsbryoconcha exilis
  topic: keywords
subject: Digestion
  topic: keywords
subject: Microscope
  topic: keywords
creator: Hanna Margaretta Hutagalung
creator: Budijono Budijono
creator: Andri Hendrizal
rights: Copyright (c) 2025 Hanna Margaretta Hutagalung, Budijono Budijono, Andri Hendrizal (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 173
ending page: 179
doi: 10.31258/jpk.30.2.173-179

Analysis of Sea Surface Temperature Distribution and Its Relation to Rainfall in Pariaman City
type: item
description: This research was conducted in February 2024. The research locations of Pariaman City waters include Angso Duo Island, Tangah Island, Ujung Island, and Kasiak Island. The research objectives were to determine the distribution of sea surface temperature, average rainfall, and the relationship between sea surface temperature and rainfall. The survey method, direct observation at the research location, was used. The results of this study indicate that the sea surface temperature in the study area in the western season (December - February) ranges from 30.70- 30.430C. The sea surface temperature in the first transitional season (March-May) ranges from 30.06-31.090C. The sea surface temperature in the east season (June - August) ranges from 30.46- 30.90C. The sea surface temperature in the second transitional season (September - November) ranges from 30.08-30.120C. The maximum rainfall in Pariaman City is in the form of rainfall. The maximum rainfall in Pariaman City occurs in November, with an average rainfall of 444 mm, while the minimum rainfall occurs in February, with an average rainfall of 235 mm. The results of the correlation analysis of sea surface temperature with rainfall are weak and strong correlation categories. In March, it produces an "r" value of 0.303, a weak category, and a coefficient of determination (R2) of 0.092 or 9.2%. In October, it produces an "r" value of o.686, a strong category, and a coefficient of determination (R2) of 0.470 or 47%.
subject: Articles
  topic: section
subject: Correlation
  topic: keywords
subject: Rainfall
  topic: keywords
subject: Sea Surface Temperature
  topic: keywords
creator: Diko Alafchan Seven
creator: Mubarak Mubarak
creator: Elizal Elizal
rights: Copyright (c) 2025 Diko Alafchan Seven, Mubarak Mubarak, Elizal Elizal (Author) https://creativecommons.org/licenses/by/4.0
date: 2025-06-01
publication date: 2025-06-01
starting page: 245
ending page: 251
doi: 10.31258/jpk.30.2.245-251