Skeletal microstructures of cheilostome bryozoans(phylum Bryozoa,class Gymnolaemata):crystallography and secretion patterns

作     者：Christian Grenier Erika Griesshaber Wolfgang Schmahl Björn Berning Antonio G.Checa 

作者机构：Departamento de Estratigrafía y PaleontologíaUniversidad de Granada18071 GranadaSpain Instituto Andaluz de Ciencias de La TierraCSIC-Universidad de Granada18100 ArmillaSpain Department of Earth and Environmental SciencesLudwig-Maximilians Universität80333 MunichGermany Institute for GeologyUniversity of Hamburg20146 HamburgGermany 

出 版 物：《Marine Life Science & Technology》 (海洋生命科学与技术（英文）)

年 卷 期：2024年第6卷第3期

页      面：405-424页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：funded by projects CGL2017-85118-P PID2020116660GB-I00(Spanish Ministry of Science and Innova-tion:MCIN/AEI/10.13039/501100011033 “FEDER Una manera de hacer Europa”) 

主　　题：Biomineralization Bryozoan Skeleton Calcite Aragonite Electron backscatter diffraction 

摘      要：Gymnolaemata bryozoans produce CaCO3 skeletons of either calcite,aragonite,or *** extensive research,their crystallography and biomineralization patterns remain *** present a detailed study of the microstructures,min-eralogy,and crystallography of eight extant cheilostome species using scanning electron microscopy,electron backscatter diffraction,atomic force microscopy,and micro-computed *** distinguished five basic microstructures,three calcitic(tabular,irregularly platy,and granular),and two aragonitic(granular-platy and fibrous).The calcitic microstruc-tures consist of crystal aggregates that transition from tabular or irregularly platy to granular *** aragonite consists of fibers arranged into *** all cases,the crystallographic textures are axial,and stronger in aragonite than in calcite,with the c-axis as the fiber *** reconstruct the biomineralization sequence in the different species by considering the distribution and morphology of the growth fronts of crystals and the location of the secretory *** bimineralic species,calcite formation always predates aragonite *** interior compound walls,growth proceeds from the cuticle toward the zooecium *** conclude that,with the exception of tabular calcite,biomineralization is remote and occurs within a relatively wide extrapallial space,which is consistent with the inorganic-like appearance of the *** biomineralization mode is rare among invertebrates.