Locomotion: The Cost of Gastropod Crawling

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Science  13 Jun 1980:
Vol. 208, Issue 4449, pp. 1288-1290
DOI: 10.1126/science.208.4449.1288


The power of locomotion of a terrestrial slug rises linearly with crawling speed. The metabolic cost of movement is 904 joules per kilogram per meter, considerably more than that reported for other forms of locomotion. This high cost is primarily attributable to the production of the pedal mucus by which the slug adheres to the substratum.

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