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All Journal BULETIN OSEANOGRAFI MARINA Naturalis : Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Jurnal Kelautan Tropis Justek : Jurnal Sains Dan Teknologi Jurnal Ilmu Kelautan Kepulauan AL-HAYAT: Journal of Biology and Applied Biology Juvenil: Jurnal Ilmiah Kelautan dan Perikanan East Asian Journal of Multidisciplinary Research (EAJMR)
Deddy Bakhtiar, Deddy
Program Studi Ilmu Kelautan Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics

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Acoustic Characteristics of Several Fish Species of Jenggalu River Estuary Through Controlled Measurements in Bengkulu City Bakhtiar, Deddy; Malau, Defi Dormasi; Silaban, Sintiana; Esra, Gracia; Mayub, Afrizal
East Asian Journal of Multidisciplinary Research Vol. 3 No. 2 (2024): February 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/eajmr.v3i2.7830

Abstract

Estuary waters are important habitats as spawning and nursery areas for various species of fish so it is necessary to monitor the fish resources in them. The purpose of this study is to analyze the target strength values of various estuary fish species from the Jenggalu River estuary through controlled measurements and formulate the relationship of target strength to total fish length. The controlled acoustic method uses a Simrad EK-15 echosounder with a frequency of 200 kHz. Measurements were taken in the pond using the tethered method, where the dead test fish was hung horizontally on the frame and then the acoustic signal was emitted vertically from above. The samples used were 13 species of fish with a total of 62 fish. The results obtained the average value of target strength has a range of values ranging from -68.86 to -54.80 dB. The relationship between the target strength value and the total length of the fish shows a very strong relationship with the correlation coefficient (r) value ranging from 0.86 – 0.96 and the coefficient of determination shows more than 74% of the TS value is influenced by the size of the fish length. The resulting equation model of the relationship between TS and total length size showed that TS values on the dorsal aspect increased in proportion to the square of fish length.
Co-Authors Ana Ariasari Ari Anggoro Ashari, Anadila Ayub Sugara Bieng Brata Ertanto, Bobby Esra, Gracia Futra, Febby Dwi Herliany, Ervina Nurlaila Ilhami, Sitti Alya Jarulis Jarulis Julianti, Lia Julyansyah, Teddy Malau, Defi Dormasi Margono, Setio Matondang, Dina Ratnasari Maylandia, Chantika Rachma Mayub, Afrizal Nirawandi, Iwan Ompusunggu, Yordan A Parapat, Andreas Jorghy Pardede, Meri Kristina Purba, Dermian Rosida Reflis Samosir, Yuyun Satria Putra Utama Silaban, Sintiana Silalahi, Desy Yohana Supiyati . Wahyudi, Irwin Yar Johan, Yar Yohana, Ningsih Yuwana Yuwana Zamdial Zamdial, Zamdial