PENGUKURAN NILAI TARGET STRENGTH ANAKAN IKAN GABUS (Channa striata) KONDISI TERKONTROL DENGAN SIMRAD EK-15 ECHOSOUNDER

Gracia Tiffany Siahaan; Sri Pujiyati; Totok Hestirianoto; Steven Solikin

doi:10.24319/jtpk.15.235-244

Gracia Tiffany Siahaan Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Jalan Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
Sri Pujiyati Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Jalan Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
Totok Hestirianoto Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Jalan Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
Steven Solikin Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Jalan Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia

DOI: https://doi.org/10.24319/jtpk.15.235-244

Keywords: hydroacoustic, juvenile, SIMRAD EK 15, snakehead fish, target strength

Abstract

Snakehead (Channa striata) is a carnivorous fish widely caught because of its savory meat taste. The existence of the snakehead in Indonesia is widely spread, but threats that continuously run over the snakehead juveniles might make them end up in extinction. It’s become important to analyze the relationship between Target Strength (TS), and total length of snakehead juveniles using SIMRAD EK15 echosounder for resource management, as well as evaluating the health of the fish populations. The study was conducted using 15 individuals with a body length ranged 10-15 cm, and the average TS value ranged from -46.80 dB to -45.01 dB. The relationship between the total length of snakehead fish and the value of the target strength has a strong relationship (r-value of 0,8531 and a coefficient of determination (R²) of 0,7279), with the equation TS= 64,439ln(L) -215,66.