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All Journal Nekton Mestaka: Jurnal Pengabdian Kepada Masyarakat
Moniharapon, Domey Lowits
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Agriculture, Biological Sciences & Forestry Humanities Economics, Econometrics & Finance Energy Environmental Science Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences Other

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Length–Weight Relationship of Skipjack Tuna (Katsuwonus pelamis) Landed at Tulehu Village, Maluku Udimera, Rocky; Moniharapon, Domey Lowits; Soukotta, Imanuel V.T.; Rahman, Rahman; Supusepa, Junita
Nekton Vol 5 No 2 (2025): Nekton
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i2.1081

Abstract

Skipjack tuna (Katsuwonus pelamis) caught in the Banda Sea using purse seines and pole-and-line (huhate) fishing gear has shown a decrease in population size parameters. The parameters observed included size distribution and length–weight relationships, both of which serve as indicators of the size at first capture and first gonadal maturity. This study aimed to analyze the growth pattern of skipjack tuna landed by fishermen at Tulehu fishing port from April to June 2025. The analysis covered fish size distribution and the length–weight relationship. The results showed that the total length distribution of skipjack tuna caught in Tulehu waters reached its highest average in June (24 cm). The highest standard deviation of total length was observed in April (21.7 cm), while the lowest occurred in May (13.4 cm), suggesting that the skipjack population in Tulehu waters represents different recruitment groups. The length–weight relationship obtained was expressed as W = 0.000008 L³·⁰¹⁴⁷, indicating positive allometric growth, meaning that weight increases faster than length. The highest mean weight was recorded in June, with the greatest standard deviation observed in April. Based on these findings, it is recommended that the current size and weight data be used to determine the optimal capture size for skipjack tuna. Furthermore, fish at this stage are in the process of gaining additional body mass, which serves as an energy reserve for spawning activities.
Konservasi Rehabilitasi Sumberdaya Pesisir dan Laut untuk Penanaman Mangrove di Tanjung Tiram Desa Poka Ambon Soukotta, Imanuel V.T; Manuputty, Gratia Dolores; Maureen, Tuapattinaja A.; Moniharapon, Domey Lowits; Saleky, D.V; Latue, Milyan Uli; Tino, Wildan; Barcinta, Muhammad Fahrul
Mestaka: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 5 (2025): Oktober 2025
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v4i5.771

Abstract

The importance of mangrove forests in protecting coastlines from abrasion and erosion. The coastal mangrove area is experiencing serious problems in terms of mangrove area pollution, resulting in the death of mangrove seedlings, reducing density and abundance. Mangrove planting is often faced with several problems, such as lack of public awareness about the importance of mangrove ecosystems, environmental damage due to human activities, and lack of resources for planting and maintenance. Protection of mangrove areas is often faced with several problems, such as environmental damage due to human activities like illegal logging, pollution, and uncontrolled infrastructure development. In addition, lack of public awareness about the importance of mangrove ecosystems and lack of law enforcement also become obstacles in protecting mangrove areas. However, solutions to these problems can be done by increasing public awareness through education and campaigns, conducting mangrove planting in a structured and sustainable manner, and involving local communities in the planting and maintenance process. Thus, mangrove planting can be more effective and sustainable in maintaining the balance of coastal ecosystems and improving community welfare. This mangrove planting activity involves students and lecturers who participate actively and runs smoothly. It is expected that this activity will foster a sense of care among students in preserving and conserving mangrove areas in the future.
Co-Authors Barcinta, Muhammad Fahrul Gratia Dolores Manuputty Imanuel Villian Trayanta Soukotta Junita Supusepa Latue, Milyan Uli Maureen, Tuapattinaja A. Rahman Rahman Saleky, D.V Soukotta, Imanuel V.T Tino, Wildan Udimera, Rocky