Tube ultrastructure of Pomatoceros americanus (Polychaeta, Serpulidae): implications for the tube formation of serpulids/Pomatoceros americanus'e (Polychaeta, Serpulidae) koja peenstruktuur ja selle tahendus serpuliidide koja moodustumise moistmisel

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Date: June 2009
From: Estonian Journal of Earth Sciences(Vol. 58, Issue 2)
Publisher: Estonian Academy Publishers
Document Type: Report
Length: 2,787 words

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Abstract :

The inner tube layer of Pomatoceros americanus has a complex oriented ultrastructure, which cannot be explained by the standard granular secretion model, predicting a largely unoriented structure of the tube. In the lamello-fibrillar structure of the inner tube layer, the crystallization axis of crystals has a uniform orientation, which is not continuous through successive growth increments. The complex biomineral structures of P. americanus suggest a matrix-controlled crystallization model rather than solidification of a slurry with calcareous granules deposited on the tube aperture. Key words: Serpulidae, biomineralization, tube ultrastructure, tube formation. Pomatoceros americanus'e koja sisemine kiht on keeruka orienteeritud struktuuriga, mida ei saa seletada standardse granulaarse sekretsiooni mudeli abil, mis eeldab orienteerimata koja struktuuri' P. americanus'e keerukad biomineraalsed struktuurid on toenaoliselt tekkinud orgaanilise maatriksi poolt kontrollitud kristallisatsiooni kaigus, mitte aga lubigraanulite toru suudmele tsementeerimise teel.

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Gale Document Number: GALE|A202074267