conchiolin


Also found in: Dictionary, Encyclopedia, Wikipedia.

conchiolin

a fibrous insoluble protein that forms the basic structure of molluscs.
Mentioned in ?
References in periodicals archive ?
As the protein conchiolin in abundant in molluscs, the concentrations of its main amino acids, such as glycine, arginine, valine, and lysine (Bowen & Tang, 1996), presumably influence the total amino acid budget of the samples.
However, because the tiny iron sulfide spheres also show up throughout the conchiolin core of each scale, the snail itself probably controls the overall growth and placement of the particles, says Waren.
Conchiolin layers are widely believed to be an adaptation that inhibits drilling by predatory naticid gastropods (Lewy and Samtleben 1979; Harper 1994).
BRD symptoms in adult animals resulting from conchiolin deposits in inner parts of carpet shell were observed in all zones surveyed.
As the infestation became increasingly heavy, the abalone formed blisters by shell material secretion (i.e., conchiolin covered with nacre) that projected into the mantle cavity to isolate the shell-boring polychaetes.
ABSTRACT Brown ring disease (BRD) in the Manila clam is characterized by the formation of a brown deposit of conchiolin on the inner surface of the shell that gives the disease its name.
These cavities are filled with calcium carbonate (aragonite) crystals perpendicularly to the outer periostracum and separated by a conchiolin membrane.
The deep, multilayered, cup-shaped lower valve is cemented to the substratum and the thin, flat upper valve is usually marked with fine radially striated conchiolin externally (Kilburn & Rippey 1982).
Evidence from the fossil record of an antipredatory exaptation: conchiolin layers in corbulid bivalves.
BMD induces a transformation of the posterior adductor muscle, which becomes infused by conchiolin and calcified (Dang et al.
Previous research has shown that the periodic growth structures contained within molluscan shells develop from changes in the density of calcium carbonate, the ratio of aragonite to calcite, the proportion of calcium carbonate to conchiolin (the organic component of the shell), the size of the crystals, or the type of crystalline microstructure (Pannella & MacClintock 1968, Rhoads & Lutz 1980, Jones 1983).
A similar but yellowish conchiolin material was reported in Tellina spp.