Horizontal and vertical movements of swordfish in the Southeast Pacific | Zendy

Francisco J. Abascal | Zendy; Jaime Mejuto | Zendy; M. Quintans | Zendy; A. RamosCartelle | Zendy

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Horizontal and vertical movements of swordfish in the Southeast Pacific

Author(s) -

Francisco J. Abascal,

Jaime Mejuto,

M. Quintans,

A. RamosCartelle

Publication year - 2009

Publication title -

ices journal of marine science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 117

eISSN - 1095-9289

pISSN - 1054-3139

DOI - 10.1093/icesjms/fsp252

Subject(s) - swordfish , oceanography , pacific ocean , geography , southeast asia , geology , diel vertical migration , fish <actinopterygii> , fishery , biology , tuna , history , ancient history

Abascal, F. J., Mejuto, J., Quintans, M., and Ramos-Cartelle, A. 2010. Horizontal and vertical movements of swordfish in the Southeast Pacific. - ICES Journal of Marine Science, 67: 466-474.In all, 21 swordfish (Xiphias gladius) were tagged with pop-up archival satellite tags in the Southeast Pacific. Despite problems of premature release, the information obtained provided insight into the horizontal and vertical behaviour of the species in the area. A consistent migratory pattern was observed, fish moving northwest by autumn and presumably returning south by early spring. Swordfish typically forage in deep water during the day and stay in the mixed layer at night, although this behaviour is occasionally modified. The maximum depth recorded was 1136 m, and dives deeper than 900 m were found in five of the six tags analysed. There was a significant positive relationship between average depth by night and visible moon fraction.

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