Length-Weight Relationship and Negative Allometric Pattern of Male Mackerel (Rastrelliger kanagurta) at Sorong Fish Landing Site, Southwest Papua
DOI:
https://doi.org/10.56942/6pn5er04Keywords:
Rastrelliger kanagurta, length-weight relationship, negative allometric, exploitation, SorongAbstract
Rastrelliger kanagurta is a small pelagic fish commodity with high economic value and is vulnerable to overfishing. This study aimed to analyze the length-weight relationship as an indicator of growth pattern of Indian mackerel landed at the Fish Landing Site (TPI) of Sorong City, West Papua. Sampling was conducted purposively from April to June. A total of 191 fish were measured for total length (mm) and body weight (g). The length-weight relationship was analyzed using logarithmic linear regression, followed by a t-test to determine the growth pattern (isometric or allometric). The results showed that the caught fish were dominated by the length class of 185.5–200.5 mm (31.9%) and weight class of 71.5–86.5 g (28.3%). The combined regression coefficient b (April–June) was 2.2498, with a calculated t-value (1.6125) < t-table (1.9725) at 95% confidence level, indicating a negative allometric growth pattern. This means that length gain is faster than weight gain, suggesting relatively slender body condition, presumably due to fishing pressure or food limitation. These findings confirm that the population of Indian mackerel in Sorong waters has experienced a shift in growth pattern, necessitating adaptive management measures such as mesh size regulation and enhanced monitoring of fishing grounds
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References
Allen, G. R. (1999). Marine fishes of South-East Asia: A field guide for anglers and divers. Periplus Editions.
Ambarwati, B., Suryono, C. A., & Santosa, G. W. (2025). Hubungan panjang dan berat ikan pelagis kecil: Kembung lelaki (Rastrelliger kanagurta) dan selar kuning (Selaroides leptolepis) yang didaratkan di TPI Majakerta, Kabupaten Indramayu. Journal of Marine Research, 14(3), 564–574.
Ariyanti, A. (2023). Pertumbuhan dan laju eksploitasi ikan kembung lelaki (Rastrelliger kanagurta) yang didaratkan di KUD Gabion Pelabuhan Perikanan Samudera Belawan Provinsi Sumatera Utara [Skripsi]. Universitas Sumatera Utara.
Asni, A., Hasrun, Ihsan, & Najamuddin. (2024). Biological aspects and population dynamics of Indian mackerel (Rastrelliger kanagurta) in Barru, Makassar Strait, Indonesia. Fisheries and Aquatic Sciences, 27(6), 392–409.
Burhanuddin, S., Martosewojo, M., Adrim, M., & Hutomo. (1984). Sumberdaya ikan kembung. Lembaga Oseanologi Nasional – LIPI.
Caesario, R., Delis, P. C., & Julian, D. (2023). Struktur ukuran, tipe pertumbuhan dan faktor kondisi ikan kembung lelaki (Rastrelliger kanagurta) yang didaratkan di Pelabuhan Perikanan Pantai Lempasing. Akuatika Indonesia, 8(1), 1–10.
Carlander, K. D. (1969). Handbook of freshwater fishery biology (Vol. 1). Iowa State University Press.
Carpenter, K. E., & Niem, V. H. (1999). FAO species identification guide for fishery purposes: The living marine resources of the Western Central Pacific (Vol. 4). FAO.
Effendie, M. I. (1979). Metode biologi perikanan. Yayasan Dewi Sri.
Effendie, M. I. (2002). Biologi perikanan. Yayasan Pustaka Nusantara.
Fahrudin, M., Lubis, Z. A., & Yonvitner. (2019). Kajian stok sumberdaya ikan kembung (Rastrelliger kanagurta Cuvier, 1817) di Selat Sunda [Skripsi]. IPB University.
Faizun, U. H., Saputra, S. W., & Taufani, W. T. (2021). Laju eksploitasi ikan kembung lelaki (Rastrelliger kanagurta) di perairan Teluk Palabuhanratu, Jawa Barat. Journal of Fisheries and Marine Research, 5(2), 123–131.
Froese, R. (2006). Cube law, condition factor and weight-length relationships: History, meta-analysis and recommendations. Journal of Applied Ichthyology, 22(4), 241–253.
Hariati, T., & Fauzi, M. (2011). Aspek reproduksi ikan banyar (Rastreliger kanagurta Cuv., 1817) di perairan Selat Malaka. Jurnal Penelitian Perikanan Indonesia, 17(2), 87–94.
Hasan, I. (2004). Analisis data penelitian dengan statistik. Bumi Aksara.
Hasani, Q., Hambali, I., Damai, A. A., Suparmono, Julian, D., & Irawati, L. (2023). Hubungan panjang-berat dan faktor kondisi ikan kembung lelaki (Rastrelliger kanagurta) yang didaratkan di Pelabuhan Perikanan Pantai Lempasing Bandar Lampung. Jurnal Sumberdaya Akuatik Indopasifik, 7(2), 109–119.
Hubbs, C. L., & Lagler, K. F. (1958). Fishes of the Great Lakes region. Cranbrook Institute of Science.
King, M. (1995). Fisheries biology, assessment and management. Fishing News Books.
Mulfizar, Muchlisin, Z. A., & Dewiyanti, I. (2012). Hubungan panjang berat dan faktor kondisi tiga jenis ikan yang tertangkap di perairan Kuala Gigieng, Aceh Besar, Provinsi Aceh. Depik, 1(1), 1–8.
Nariswari, H., Lubis, R. M., & Sari, D. P. (2022). Hubungan panjang berat dan faktor kondisi ikan kembung lelaki (Rastrelliger kanagurta) di Perairan Lampung. Jurnal Perikanan dan Kelautan, 12(2), 89–98.
Panjaitan, H. C. (2024). Pertumbuhan dan biologi reproduksi ikan kembung lelaki (Rastrelliger kanagurta) yang didaratkan di Tangkahan Teluk Nibung Kota Tanjung Balai Provinsi Sumatera Utara [Skripsi]. Universitas Sumatera Utara.
Rachmanto, D., Djumanto, D., & Setyobudi, E. (2020). Reproduction of Indian Mackerel Rastreliger kanagurta (Cuvier, 1816) in Morodemak Coast Demak Regency. Jurnal Perikanan Universitas Gadjah Mada, 22(2), 85–85. https://doi.org/10.22146/jfs.48440
Ricker, W. E. (1975). Computation and interpretation of biological statistics of fish populations. Bulletin of the Fisheries Research Board of Canada, 191, 1–382.
Saanin, H. (1984). Taksonomi dan kunci identifikasi ikan (Jilid 1). Binacipta.
Sari, I. P., Bramana, A., & Rahayu, S. M. (2022). Pola pertumbuhan ikan kembung lelaki (Rastrelliger kanagurta) yang didaratkan di PPP Labuan, Banten. Aurelia Journal, 4(1), 21–30.
Sasmitha, L. P. S., & Putri, S. (2024). Karakteristik morfometrik ikan kembung lelaki (Rastrelliger kanagurta Cuvier, 1816) yang didaratkan di Pangkalan Pendaratan Ikan (PPI) Tanjung Luar, Lombok Timur [Skripsi]. Universitas Mataram.
Sidabutar, M. A. P. (2021). Kajian stok ikan kembung lelaki (Rastrelliger
kanagurta) yang didaratkan di Tempat Pelelangan Ikan (TPI) Tanjung Beringin Kabupaten Serdang Bedagai Provinsi Sumatera Utara [Skripsi]. Universitas Sumatera Utara.
Silalahi, U. (2003). Metode penelitian sosial. Unpar Press.
Steel, R. G. D., & Torrie, J. H. (1993). Prinsip dan prosedur statistika: Suatu pendekatan biometrik (B. Sumantri, Penerj.). Gramedia Pustaka Utama.
Sugiyono. (2017). Metode penelitian kuantitatif, kualitatif, dan R&D. Alfabeta.
Suruwaky, A. M., & Gunaisah, E. (2013). Identifikasi tingkat eksploitasi sumber daya ikan kembung lelaki (Rastrelliger kanagurta) ditinjau dari hubungan panjang berat. Jurnal Akuatika, 4(2), 123–130.
Walpole, R. E. (1995). Pengantar statistika (B. Sumantri, Penerj.). Gramedia Pustaka Utama.
