Polarimetry of Pinctada fucata nacre indicates myostracal layer interrupts nacre structure.

ABSTRACT: The inner layer of many bivalve and gastropod molluscs consists of iridescent nacre, a material that is structured like a brick wall with bricks consisting of crystalline aragonite and mortar of organic molecules. Myostracal layers formed during shell growth at the point of muscle attachment to the shell can be found interspersed within the nacre structure. Little has been done to examine the effect the myostracal layer has on subsequent nacre structure. Here we present data on the structure of the myostracal and nacre layers from a bivalve mollusc, Pinctada fucata. Scanning electron microscope imaging shows the myostracal layer consists of regular crystalline blocks. The nacre before the layer consists of tablets approximately 400 nm thick, while after the myostracal layer the tabl

SUBMITTER: Metzler RA 

PROVIDER: S-EPMC5367278 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature