Metabolic physiology of the Humboldt squid, Dosidicus gigas: Implications for vertical migration in a pronounced oxygen minimum zone

The Humboldt (or jumbo) squid, Dosidicus gigas, is an active predator endemic to the Eastern Pacific that undergoes diel vertical migrations into a pronounced oxygen minimum layer (OML). Here, we investigate the physiological mechanisms that facilitate these migrations and assess the associated cost...

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Bibliographic Details
Published in:Progress in oceanography 2010-07, Vol.86 (1-2), p.72-80
Main Authors: Rosa, Rui, Seibel, Brad A
Format: Article
Language:English
Subjects:
Daytime
Ecology
Marine
Migration
Physiology
Predators
Reduction
Squid
Stores
Surface temperature
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Summary:The Humboldt (or jumbo) squid, Dosidicus gigas, is an active predator endemic to the Eastern Pacific that undergoes diel vertical migrations into a pronounced oxygen minimum layer (OML). Here, we investigate the physiological mechanisms that facilitate these migrations and assess the associated costs and benefits. Exposure to hypoxic conditions equivalent to those found in the OML (-10 mu M O sub(2) at 10 degree C) led to a significant reduction in the squid's routine metabolic rate (RMR), from 8.9 to 1.6 mu mol O sub(2) g super(-1) h super(-1) (p
ISSN:0079-6611
DOI:10.1016/j.pocean.2010.04.004