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Head bores through wood: shipworm

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Driftwood bored by shipworms / Rygel, M.C. / LicenseCC-by-sa - Attribution Share Alike

The head of a shipworm bores circular burrows in wood thanks to raspy, rotating shells.

FUNCTION
Summary
Worm-like molluscs of the genus Teredo have been known to people for thousands of years because of their habit of wrecking wooden ships and piers. "There are many different types of shipworms, the largest of which is up to 2 metres long. The worm has a head with two shells (they do the damage), and a wormlike body that follows behindThey invade wood while in the tiny larval stageThe shipworm uses the shell on its head to burrow. Their ridged and rough surfaces rub the wood away as the worm first turns its head one way then the other. This cuts away a perfectly circular tube that is just a bit larger than the shell itself. The worm then eats the wood it has cut away, turning the cellulose in the wood into glucose that it uses for energy. The wormlike body follows behind the shell, producing a substance like chalk to line the burrowThe worm gets its oxygen from water. It draws the water in then passes it out again through through two tubes on its tail called siphons. These stick out from the opening of the burrow but can be pulled in and the burrow closed by special small plates called pallets. These seal the tube so tightly that shipworms can survive when the timber is temporarily out of water." (Liverpool Museum 2008)
About the inspiring organism
Med_800pxshipworm_mcr1 Teredo
Teredo

Learn more at EOL.org
Organism/taxonomy data provided by:
Species 2000 & ITIS Catalogue of Life: 2008 Annual Checklist


Bioinspired products and application ideas

Application Ideas: Has been used on a tunneling device; closure technique (pallets) could be used for packaging.

Industrial Sector(s) interested in this strategy: Construction, manufacturing



References
Anonymous. 2008. What is a shipworm?. Liverpool, UK: National Museums Liverpool.
http://www.liverpoolmuseums.org.uk/nof/top/shipworm.html#.
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lbeaumont
over 7 years ago
“The worm then eats the wood it has cut away, turning the cellulose in the wood into glucose that it uses for energy” - this must also be a chemical breakdown process, similar in results to the parasites in the termite gut that also digest cellulose. Can this be linked to that strategy?
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