Regularity and polarity in budding of the colonial scleractinian Dendrophyllia ehrenbergiana: consequences of radio-bilateral symmetry of the scleractinian body plan
Regularity and polarity in budding of the colonial scleractinian Dendrophyllia ehrenbergiana: consequences of radio-bilateral symmetry of the scleractinian body plan
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DOI：
10.1111/j.1502-3931.2012.00321.x
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发表时间：
2012-10-01
期刊：
影响因子：
1.5
通讯作者：
Ezaki, Yoichi
中科院分区：
文献类型：
--
作者：
Sentoku, Asuka;Ezaki, Yoichi
Sentoku， A. & Ezaki， Y. 2012：硬核树突萌发的规则性和极性：硬核体平面放射-双边对称的后果。《Lethaia》第45卷，第586593页。研究了偶氮黄原属硬核树胶萌发的规律和极性，以了解菌落形成的发育制约因素。其出芽方式与其它树科植物的出芽角度一致。然而，D. ehrenbergiana的偏移只发生在单个珊瑚凸侧的两个初级隔附近，呈现出具有明显极性的双边对称平面。这些规律和极性在整个生长过程中都表现在轴向岩及其衍生的珊瑚岩中。值得注意的是，单个珊瑚的极性通过分支模式和珊瑚数量清楚地反映在随后的群体生长中。这些特征暗示了Scleractinia的无性繁殖存在无线电-双边对称约束，并为我们理解海洋模块化生物的形状形成机制提供了宝贵的线索。？无性繁殖，偶氮黄藻珊瑚，出芽，群落，石斛，极性。
Sentoku, A. & Ezaki, Y. 2012: Regularity and polarity in budding of the colonial scleractinian Dendrophyllia ehrenbergiana: consequences of radio-bilateral symmetry of the scleractinian body plan. Lethaia, Vol. 45, pp. 586593. Regularities and polarity in budding of the azooxanthellate scleractinian Dendrophyllia ehrenbergiana were examined with the aim of understanding the developmental constraints on the formation of colonies. Its mode of budding, in light of the orientations of directive septa of offsets and the inclination angle of budding, is consistent with that of other dendrophyllids; however, the offsets of D. ehrenbergiana only occur near the two primary septa on the convex side of individual corallites, showing a plane of bilateral symmetry with a distinct polarity. These regularities and polarity are seen in the axial and its derived corallites throughout growth. Of note, the polarity at individual corallites is clearly reflected in subsequent colony growth by the branching pattern and corallite number. These characteristics imply the presence of radio-bilateral symmetrical constraints on the asexual reproduction of the Scleractinia and give us invaluable clues to the understanding of shape-making mechanisms of marine modular organisms. ?Asexual reproduction, azooxanthellate coral, budding, colony, Dendrophyllia ehrenbergiana, polarity.