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All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut METAMORFOSA Journal of Biological Sciences ILMU KELAUTAN: Indonesian Journal of Marine Sciences
Hety Hartaty
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology

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Journal : ILMU KELAUTAN: Indonesian Journal of Marine Sciences

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Modelling the Diel Vertical Movement of Swordfish (Xiphias gladius Linnaeus, 1758) Based on Temperature and Depth Recorder Data Bram Setyadji; Hety Hartaty
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 1 (2016): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.747 KB) | DOI: 10.14710/ik.ijms.21.1.9-16

Abstract

Understanding the vertical distribution of large pelagic fish, swordfish in particular, could improve our knowledge on its fisheries strategy, management and resource conservation. However the methods often require expensive tools and resources, which probably most scientists from the development countries couldn’t afford. Thus developing model on the diel vertical movement behavior of swordfish using number of hook between float (HBF) and complete-set temperature and depth recorder (TDR) data could be an alternative. In general context, capture depth distributions are a good indicator of the natural depth distribution of the fish if the entire depth range of the species is targeted by longline gear. The proposed sinusoidal model suggested that swordfish showed a diel pattern in depth distribution, marked by remained in the surface and mixed layer waters at night and dived into deeper waters during the day. Keywords: swordfish, behavior, HBF, TDR, sinusoidal model
Co-Authors Bram Setyadji Bram Styadji Budi Nugraha FX. Sudaryanto IRIANI SETYAWATI