Biogenic nanoparticles and mineral composition in the radula of chiton Acanthochitonrubrolineatus

Abstract

Magnetite particles were confirmed to deposit in the radula of chiton Acanthochiton rubrolineatus, and these magnetite particles presented as chip-shaped pieces which were 150 nm in width. Many nano-scale crystals constructed each piece of the magnetite particles. The mean size of a single crystal was 52 nm in diameter. Calcium composites were found to coexist with iron minerals. The total amount of magnetite in the chiton radula was 10% (w/w) of the radula weight, and 41% (w/w) of the total minerals. Eight metal elements were measured in the chiton radula, among which iron was a major element (14.6%, w/w) of the radula, followed by sodium, magnesium, calcium, potassium, chromium, manganese and cobalt in turn.

Keywords

biomineralization / nanoparticle / magnetite / radula / chiton

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Acknowledgements

This project was financially supported by the NSFC (Grant No. 30670566) and ISTCP (2008DFA31640). The authors specially thank Professors X. F. Han, B. S. Han and L. Sun for their advice and assistances in the studies.

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg