Invasive range expansion by the Humboldt squid, Dosidicus gigas, in the eastern North Pacific

A unique 16-year time series of deep video surveys in Monterey Bay reveals that the Humboldt squid, Dosidicus gigas, has substantially expanded its perennial geographic range in the eastern North Pacific by invading the waters off central California. This sustained range expansion coincides with cha...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2007-07, Vol.104 (31), p.12948-12950
Main Authors: Zeidberg, Louis D, Robison, Bruce H
Format: Article
Language:English
Subjects:
Animals
Biological Sciences
California
Climate
Climate change
Climate models
Coasts
Decapodiformes - physiology
Dosidicus gigas
Ecological invasion
Ecosystem
Hake
Marine
Marine Biology
Marine fishes
Merluccius productus
Mollusks
Nonnative species
Oceanography
Pacific Ocean
Population Dynamics
Population ecology
Predation
Predators
Species
Squid
Temperature
Time Factors
Time series
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Summary:A unique 16-year time series of deep video surveys in Monterey Bay reveals that the Humboldt squid, Dosidicus gigas, has substantially expanded its perennial geographic range in the eastern North Pacific by invading the waters off central California. This sustained range expansion coincides with changes in climate-linked oceanographic conditions and a reduction in competing top predators. It is also coincident with a decline in the abundance of Pacific hake, the most important commercial groundfish species off western North America. Recognizing the interactive effects of multiple changes in the environment is an issue of growing concern in ocean conservation and sustainability research.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.0702043104