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Calcium Transport along the Axial Canal in Acropora

by 1, 2, 1,* and 1,*
State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, China
Authors to whom correspondence should be addressed.
Academic Editor: Michael Wink
Diversity 2021, 13(9), 407;
Received: 8 July 2021 / Revised: 16 August 2021 / Accepted: 23 August 2021 / Published: 27 August 2021
(This article belongs to the Special Issue Coral Reef Ecology and Biodiversity)
In Acropora, the complex canals in a coral colony connect all polyps to a holistic network, enabling them to collaborate in performing biological processes. There are various types of canals, including calice, axial canals, and other internal canals, with structures that are dynamically altered during different coral growth states due to internal calcium transport. In this study, we investigated the morphological changes in the corallite of six Acropora muricata samples by high resolution micro-computed tomography, observing the patterns of calcium carbonate deposition within axial corallite during processes of new branch formation and truncated tip repair. We visualized the formation of a new branch from a calice and the calcium carbonate deposition in the axial canal. Furthermore, the diameter and volume changes of the axial canal in truncated branches during rebuilding processes were calculated, revealing that the volume ratio of calcareous deposits in the axial canal exhibit significant increases within the first three weeks, returning to levels in the initial state in the following week. This work demonstrates that calcium carbonate can be stored temporarily and then remobilized as needed for rapid growth. The results of this study shed light on the control of calcium carbonate deposition and growth of the axial corallite in Acropora. View Full-Text
Keywords: axial canal; reef-building coral; high-resolution micro-computed tomography; Acropora muricata; calcium transport; deposit axial canal; reef-building coral; high-resolution micro-computed tomography; Acropora muricata; calcium transport; deposit
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MDPI and ACS Style

Li, Y.; Liao, X.; He, C.; Lu, Z. Calcium Transport along the Axial Canal in Acropora. Diversity 2021, 13, 407.

AMA Style

Li Y, Liao X, He C, Lu Z. Calcium Transport along the Axial Canal in Acropora. Diversity. 2021; 13(9):407.

Chicago/Turabian Style

Li, Yixin, Xin Liao, Chunpeng He, and Zuhong Lu. 2021. "Calcium Transport along the Axial Canal in Acropora" Diversity 13, no. 9: 407.

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