丛生盔型珊瑚共生体及骨骼的形态研究

"Symbiosis" and "calcification" were the most important questions for the study of coral ecology, in order to a deepen understanding of coral symbiotic and calcification of biological process. In this study, the Galaxea fasciculariswere used as a model for studying the coral morphological characteristics of symbionts cells and bones by usingthe electron microscope microscopic andthe ICP-MS.The results showed that the outer membrane layer and the inner membrane layer of the coral symbiont were originated from the host cells and the zooxanthellae cells, respectively, this complex structure of the coral symbiont membrane play roles in the metabolite exchange and interaction between "coral-zooxanthellae".Coral skin cells can secrete a large amount of mucus and have a certain fluidity in the coral surface, which may be related to a shuttledynamicfor symbiotic zooxanthellae or microorganisms.In addition, the coral skeletal microstructure indicates that the secretion oforganic matrix (SOM) is a critical for the formation of the calcified crystals and skeletal fibers, supporting the view that coral mineralization is a biological regulation process. This study provide us a deeper understanding of the corals morphology, and will lay a foundation for studying the molecular responses to the marine environmentchanges in further.