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All Journal MAJALAH BIAM Albacore : Jurnal Penelitian Perikanan Laut TRITON : Jurnal Manajemen Sumberdaya Perairan Indonesian Journal of Mollusk Nekton Jurnal Pengabdian Pada Masyarakat Indonesia (JPPMI) Open Community Service Journal Mestaka: Jurnal Pengabdian Kepada Masyarakat Jurnal Laut Pulau Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap Journal of Coastal and Deep Sea Balobe: Jurnal Pengabdian Masyarakat
Imanuel Villian Trayanta Soukotta
Program Studi Ilmu Kelautan, Jurusan Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Pattimura, Jl. Ir. M. Putuhena, Kec. Teluk Ambon, Kota Ambon, Maluku, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Physics Social Sciences Other

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PENINGKATAN LITERASI SAINS TENTANG EKOSISTEM LAUT DI SMP NEGERI 8 AMBON Pasanea, Krisye; Lokollo, Frijona F.; Supusepa, Junita; Saleky, Valentine D.; Soukotta, Imanuel V. T.
Balobe: Jurnal Pengabdian Masyarakat Vol 4 No 1 (2025): Balobe: Jurnal Pengabdian Masyarakat
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/balobe.4.1.9-14

Abstract

Pengenalan tentang ekosistem laut kepada generasi muda seperti di Sekolah Menengah Pertama (SMP) memegang peran penting dalam peningkatan literasi sains. Tujuan dari pengabdian ini adalah untuk meningkatkan literasi sains para siswa SMP 8 Ambon terkait ekosistem laut. Kegiatan pengabdian kepada masyarakat di SMP 8 Ambon ini dilaksanakan pada hari Jumat, 30 Agustus 2024. Kegiatan ini diikuti sebanyak 40 siswa yang terdari kelas XI-1 dan XI-2. Kegiatan pengabdian ini dilaksanakan melalui beberapa tahapan yaitu perizinan berupa koordinasi dengan pihak sekolah, persiapan berupa pembuatan materi presentasi, pelaksanaan berupa pemberian materi tentang ekosistem laut, evaluasi berupa hasil jawaban pre-test dan post-test serta pemberian hadiah bagi siswa yang bisa menjawab pertanyaan dengan benar. Siswa SMP Sekolah Dian Harapan semakin mengenal dan mengetahui tentang ekosistem laut sehingga penting untuk dijaga kelestarian sumber daya alam di laut. Hasil kegiatan ini diharapkan bahwa literasi sains Siswa SMP Negeri 8 Ambon terkait ekosistem laut semakin meningkat sehingga dapat menjaga serta melestarikan sumber daya alam di laut.
Kajian Kondisi Stok Ikan Layang (Decapterus macrosoma ) di perairan Laut Banda Utara, Maluku Soukotta, Imanuel V.T.; Supusepa, Junita; Moniharapon, Domey L.
Journal of Coastal and Deep Sea Vol 2 No 1 (2024): Journal of Coastal and Deep Sea
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jcds.v2i1.13519

Abstract

Abstrak: Ikan layang putih adalah sumberdaya perikanan pelagis kecil yang potensial di perairan teritorial Indonesia dan berada di Provinsi Maluku, khususnya di perairan Banda Utara. Penelitian ini dilakukan di perairan Banda Utara, Maluku, dari bulan Januari 2024 sampai April 2024. Tujuan penelitian ini adalah mempelajari kondisi stok ikan layang putih (D. macrosoma) didasarkan pada dinamika populasi dari distribusi kelompok ukuran ikan (kohort) , ukuran ikan pertama kali tertangkap (Lc), pola pertumbuhan dan ukuran pertama matang gonad. Contoh ikan dikoleksi tiap bulan di tempat pendaratan dari nelayan purse seine. Total 510 individu. Kondisi stok ikan layang putih didasarkan pada analisis menunjukkan bahwa stok masih di bawah tingkat Kohort bulan Ferbuari tertinggi pada 27,30-28,80 cm , ikan layang yang pertama kali tertangkap (Lc) 50% adalah 23,2 cm , panjang asimptot (L∞) sebesar 33,2 cm dan nilai koefisien laju pertumbuhan (K) sebesar 0,08 per tahun dan ukuran ikan layang pertama kali matang gonad (Lm 50) adalah 22,08 cm. Agar tetap menjaga keberadaan stok ikan layang tersebut diharapkan agar penangkapan dengan menggunakan jaring bobo (purse saine ) harus selektif.
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.
STOCK ESTIMATE OF SKIPJACK TUNA (Katsuwonus pelamis) CATCHES IN SOUTHERN WATERS OF LATUHALAT, MALUKU, INDONESIA Soukotta, Imanuel V.T.; Moniharapon, Domey L.; Tino, Wildan; Masrikat, J.A.N.
Jurnal Penelitian Perikanan Laut (Albacore) Vol 10 No 1 (2026): Albacore
Publisher : Departemen PSP IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/core.10.1.053-063

Abstract

Distribution of skipjack tuna (Katsuwonus pelamis) stock, an economically important commodity, has led to a decline in fish size status. Exploitation in the southern waters of Latuhalat village is carried out by various fishing gear, affecting trip and catch production. The study aimed to analyze size distribution, growth pattern, mortality, and sex ratio using Microsoft Excel and FiSAT II software. The results showed a growth coefficient (K) of 0.61 per year and asymptotic length (L∞) of 62.50 cmFL, with a maximum age (t) of 8 years and age at zero length (t0) of -0.23 years. The von Bertalanffy growth equation was Lt = 62.50(1-e^(-0.61(t+0.23))). The cohort pattern consisted of 4 cohorts, with juvenile fish at 23.3 cm and adult fish at 55.5 cm. The fishing mortality rate (F) was 0.03 per year, calculated by subtracting natural mortality rate (M) of 1.07 per year from total mortality rate (Z) of 1.10 per year. The exploitation rate (E) was calculated as E=F/Z, which was 0.03. The sex ratio was 1:1, indicating a balanced population. Recommendation: reduce the catch of adult fish during the third gonad stage to maintain population balance. Key words: Katsuwonus pelamis, Latuhalat waters, population parameters
DINAMIKA POPULASI IKAN CAKALANG (KATSUWONUS PELAMIS) DI LAUT SERAM Soukotta, Imanuel VT.; Tuapetel, Friesland
Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap Vol 13 No 2 (2024): Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/amanisal.v13i2.15000

Abstract

This study examines the skipjack tuna fishing industry in North Seram District, Central Maluku Regency, which has been operated by local fishermen for many years. This fishery is categorized as a small-scale and concentrated effort in the Seram Sea, one of the small seas in the Indonesian archipelago, which is part of the Pacific Ocean, covering an area of approximately 12,000 square kilometers. The study employs the length-weight relationship analysis method and the von Bertalanffy growth model. The results indicate that the growth of skipjack tuna can be represented by the equation W = 0.0133L^3.0999 with a determination coefficient of 94%. The b coefficient value for the sampled skipjack tuna was 3.0999, indicating isometric growth (length and weight grow proportionally). The growth coefficient (K) of skipjack tuna was 0.17 per year, with an asymptotic length of 49.586 cm and a t0 value of -0.0748 years. The resulting von Bertalanffy equation is Lt = 49.58{1- e^-0.175(t+0.0748)}, which describes the growth pattern of skipjack tuna in the Seram Sea.
Co-Authors Elizabeth Miklen Palinnussa Fahrul Rozy Fakaubun Febe F. Gaspersz Fredy Pattipeilohy Frijona Fabiola Lokollo Irma Kesaulya Janson Hans Pietersz Junita Supusepa Kalay, Degen E Kesaulya, Irma Krisye Pasanea Lillian M. Soukotta Limmon, Gino V. Marlin C Wattimena Masrikat, J.A.N. Meigy N. Mailoa Moniharapon, Domey L Moniharapon, Domey L. Moniharapon, Domey Lowits Moniharapon, Louis D N. Satumalay, Vilsigelint Rahman Rahman Raja B.D. Sormin Ratuluhain, Eva Susan Rijoly, Frederik Ronald Darlly Hukubun Saleky, Valentine D Saleky, Valentine D. Sanduan, Fitria Sara Haumahu Simon Tubalawony Sophia N. M. Fendjalang Suradi Wijaya Saputra Tino, Wildan Tomasoa, Matheos Trijunianto Moniharapon Tuahatu, Juliana W. Tuapetel, Friesland Udimera, Rocky Valentine Domaris Saleky Wattimena, Marlin Ch Yofita Anaktototy