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How squid swim and fly 1

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Squid have been studied extensively since 1982 to quantitatively measure their cost of locomotion and compare it with costs for fishes that are their primary competitors in the ocean. Early work focused on oxygen consumption in swim tunnels and led to the use of jet pressure tags to relate captive studies to behaviour in nature. Dosidicus gigas (d’Orbigny, 1835) (jumbo flying squid or Humboldt squid), which has expanded its range more than 10-fold, is used to illustrate how “live fast, die young” squid can out compete fishes in changing times by both swimming and flying. Recent work has provided quantitative data on the costs of flying and this report provides some comparisons. Costs of flight in nature require new technology, which has fortunately arrived just in time. Accelerometry tags can now provide similar and perhaps better data on travel rate in nature, both in water and in air. These work on both squid and fish, so more and better comparisons are becoming possible.
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Keywords: Dosidicus gigas; Illex illecebrosus; accelerometry; accélérométrie; calmar; cost of transport; coût de déplacement; encornet nordique; energetics; flying; jet pressure; nage; pression de jet; shortfin squid; squid; swimming; vol; énergétique

Document Type: Research Article

Publication date: 2013-01-01

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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