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All Journal Albacore : Jurnal Penelitian Perikanan Laut Journal of Coastal and Deep Sea
Moniharapon, Domey L.
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Environmental Science Immunology & microbiology

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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.
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
Co-Authors Imanuel Villian Trayanta Soukotta Junita Supusepa Masrikat, J.A.N. Tino, Wildan