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Ronal Kurniawan
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Science, Technology, and Education Care (STEDCA) Address: Jl. Garuda II No.2, Kel. Labuh Baru Timur, Kec. Payung Sekaki Kota Pekanbaru, 28292 Indonesia
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South East Asian Marine Sciences Journal
Published by Science, Technology and Education Care
ISSN : -     EISSN : 30262348     DOI : https://doi.org/10.61761/seamas
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science
South East Asian Marine Sciences Journal (SEAMAS) is professionally managed and published by Science, Technology, and Education Care to help academics, researchers, and practitioners to publish their research results. South East Asian Marine Sciences Journal (SEAMAS) is a journal dedicated to the publication of quality research results in all aspects of marine science and is free of charge in the Submission Process. All publications in SEAMAS journals are open-access, allowing articles to be freely available online without subscription.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 25 Documents
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Construction and Design of the Dragon Trap in Insit Village, Tebing Tinggi Barat District, Kepulauan Meranti Regency, Riau Silitonga, Ido Maruli; Nofrizal, Nofrizal; Yani, Alit Hindri
South East Asian Marine Sciences Journal Vol. 3 No. 1 (2025): September
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamas.3.1.33-38

Abstract

This study aims to examine the construction and design of dragon traps used by fishermen in Insit Village, Tebing Tinggi Barat Sub-district, Meranti Islands Regency, Riau Province. Dragon traps are passive and environmentally friendly fishing gear that have only been used since 2022, primarily targeting shrimp, with bycatch including fish and crabs. The research was conducted over two weeks from August 26 to September 9, 2024, using survey and field observation methods. Data were collected through direct measurements of the fishing gear, interviews with fishermen, and visual documentation. The results showed that the dragon traps have a total length of 15 meters, with the main structure consisting of 36 galvanized iron frames. The trap body is made of polyethene (PE) netting with a mesh size of 0.5 inches, measuring 40 cm in length, 45 cm in width, and 30 cm in height. It has 32 entry holes (ijep) arranged alternately. Other components include two catch-holding chambers measuring 50 cm in length, 38 cm in width, and 25 cm in height, PE binding ropes, and 5-meter-long stakes. The fishing location is in shallow, muddy waters with a depth of 2–3 meters and approximately 150 meters from the shoreline. During the study, the dragon traps caught 120 kg of white shrimp (Penaeus merguiensis) out of a total catch of 149 kg. This indicates that the bubu naga is quite effective in capturing shrimp as its main target species.
Sustainability Status of Gillnet Capture Fisheries Based on Economic, Ecological, Technological, Institutional, and Social Aspects in Panipahan Pasir Limau Kapas Sub-District Rokan Hilir District Simanjuntak, Jeremi Nichola; Brown, Arthur; Zain, Jonny
South East Asian Marine Sciences Journal Vol. 3 No. 1 (2025): September
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamas.3.1.9-18

Abstract

Rokan Hilir Regency, particularly Pasir Limau Kapas District, has significant potential for capture fisheries. However, ecosystem sustainability depends on high-value fish resources such as senangin and mackerel. Therefore, a sustainable study of fisheries management is needed based on ecological, socioeconomic, community, and institutional dimensions to ensure the sustainable use of fish resources. This research evaluates the sustainability status of gill net capture fisheries in Panipahan, Pasir Limau Kapas District, Rokan Hilir Regency, based on five dimensions: economic, ecological, technological, institutional, and social. The analysis method used is Rapid Appraisal for Fisheries (RAPFISH) with a Multidimensional Scaling (MDS) approach. The results show that the institutional dimension had the highest sustainability index at 92.08%, classified as "sustainable", while the technological dimension had the lowest index at 39.87%, indicating a "less sustainable" status. The economic and social dimensions scored 53.11% and 57.75% respectively, categorised as "moderately sustainable", whereas the ecological dimension scored 43.96%, also "less sustainable". These findings indicate that gill net capture fisheries in Panipahan are not yet fully sustainable, particularly regarding technology and ecology. Therefore, there is a need to enhance environmentally friendly fishing gear use, strengthen local institutional regulations, and increase public education and community involvement to support sustainable fisheries resource management
Behavioral Response of African catfish (Clarias gariepinus) to Electrical Flow in an Electrofishing Gear Azizah, Novia Rahmatul; Nofrizal, Nofrizal; Yani, Alit Hindri
South East Asian Marine Sciences Journal Vol. 3 No. 1 (2025): September
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamas.3.1.1-8

Abstract

African catfish are a species of fish commonly found in various aquatic environments. Fishermen employ diverse methods to catch fish in seas, rivers, and swamps, utilizing eco-friendly and non-eco-friendly tools. One such tool is electrofishing. Fish behavior is influenced by their ability to adapt to their environment. One observable aspect is the African catfish's swimming patterns and endurance in a research pond. This study was conducted in April 2024 at the Fishing Gear Materials Laboratory, Department of Aquatic Resource Utilization, Faculty of Fisheries and Marine Sciences, Universitas Riau. The research utilized an experimental method, with data collected directly in the Laboratory. African catfish were used as test subjects with a 12-volt electric fishing gear. The results showed that at a treatment distance of 30 cm, the fish required an average of 3,5 seconds to respond to the electric current. The use of electrofishing gear has been proven to cause negative physiological responses, including fainting, external injuries, and mucus release in African catfish, which has implications for the sustainability of the African catfish population. After electrofishing, the condition of the fish showed injuries and fin loss on their bodies, resulting in some fish dying during recovery, although the number of dead fish was fewer than the number of surviving fish
Bioactive Potential of Marine Biota (Algae, Sponges, and Marine Bacteria) as a Source of Antimicrobial Compounds Wahyuni, Sri; Mursawal, Asri; Kurniawan, Ronal
South East Asian Marine Sciences Journal Vol. 3 No. 1 (2025): September
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamas.3.1.19-26

Abstract

Antimicrobial resistance has become one of the most serious global health threats, prompting the search for new natural sources of antibiotics. Marine biota, such as algae, sponges, and bacteria, are known to produce a variety of secondary metabolites with potential biological activity, particularly as antimicrobial compounds. This review article examines the bioactive potential of these marine biota as an alternative source of natural antibacterial compounds. The study was conducted by reviewing various international and national literature related to the bioactive metabolites produced, their mechanisms of action against pathogenic bacteria, and the potential for their use in developing new antibacterial agents. The results of the review indicate that sulfated polysaccharides, terpenoids, alkaloids, and phenolic compounds from algae; alkaloids, cyclic peptides, and terpenoids from sponges; and secondary metabolites of marine symbiont bacteria have significant antibacterial activity, including against antibiotic-resistant bacteria. However, the development of marine bioactive compounds still faces various obstacles, particularly related to isolation techniques, mass production, and environmental sustainability issues. Therefore, modern biotechnological approaches, such as genomics, metabolomics, and synthetic biology, are needed to optimize the utilization of these marine resources. This article confirms that marine biota are important candidates for the development of new, sustainable antibacterial agents and have the potential to support the strengthening of the blue economy concept.
Morphometric Analysis of Ponyfish (Leiognathus daura) Landed at the PPI Cituis, Tangerang, Banten Mursawal, Asri; Ruzanna, Arina; Wahyuni, Sri
South East Asian Marine Sciences Journal Vol. 3 No. 1 (2025): September
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamas.3.1.27-32

Abstract

Leiognathus daura is a small pelagic fish that plays an important role in coastal ecosystems and has economic value for local communities. This study aimed to analyze the length–weight relationship, condition factors, and morphological characteristics of L. daura as a basis for fisheries biology information. A total of 30 specimens were examined morphometrically and meristically. The length–weight regression produced the equation y = 0.9073x + 0.2776 with a coefficient of determination (R²) of 0.2595. The value of b = 0.9073 (< 3) indicates a negative allometric growth pattern, meaning that length increases faster than body weight. Condition factors showed a Fulton's K value of 3.8036 and a relative condition factor (Wr) of 101.0081, suggesting that the fish population is healthy and supported by a favorable aquatic environment. Morphologically, L. daura has a laterally compressed body, small terminal mouth, large eyes, silvery scales, and a forked caudal fin, all of which support schooling behavior and adaptation to shallow coastal waters. The low R² value implies that body weight is influenced by length and environmental conditions, food availability, reproductive status, and fishing pressure. These findings highlight the importance of understanding the biological aspects of L. daura as a foundation for sustainable fisheries management in coastal ecosystems

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