Please use this identifier to cite or link to this item: doi:10.22028/D291-29477
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Title: On the Nature of the Transparent Teeth of the Deep-Sea Dragonfish, Aristostomias scintillans
Author(s): Velasco-Hogan, Audrey
Deheyn, Dimitri D.
Koch, Marcus
Nothdurft, Birgit
Arzt, Eduard
Meyers, Marc A.
Language: English
Title: Matter
Volume: 1
Issue: 1
Startpage: 235
Endpage: 249
Publisher/Platform: Cell Press
Year of Publication: 2019
Publikation type: Journal Article
Abstract: The dragonfish is a voracious predator of the deep sea with an arsenal of tools to hunt prey and remain concealed. In contrast to its dark pigmented skin, the dragonfish is equipped with transparent teeth. Here, we establish the structure, composition, and mechanical properties of the transparent teeth for the first time. We find the enamel-like layer to consist of nanocrystalline hydroxyapatite domains (∼20 nm grain size) embedded in an amorphous matrix, whereas in the dentin layer the nanocrystalline hydroxyapatite coats nanoscale collagen fibrils forming nanorods. This nanoscale structure is responsible for the much-reduced Rayleigh light scattering, which is further ensured by the sufficiently thin walls. Here, we suggest that the nanostructured design of the transparent dragonfish teeth enables predatory success as it makes its wide-open mouth armed with saber-like teeth effectively disappear, showing no contrast to the surrounding blackness of the fish nor the background darkness of the deep sea.
DOI of the first publication: 10.1016/j.matt.2019.05.010
Link to this record: hdl:20.500.11880/28224
http://dx.doi.org/10.22028/D291-29477
ISSN: 2590-2385
Date of registration: 28-Oct-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Eduard Arzt
Collections:UniBib – Die Universitätsbibliographie

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