Systematics of the coral genus Craterastrea (Cnidaria, Anthozoa, Scleractinia) and description of a new family through combined morphological and molecular analyses
Systematics of the coral genus Craterastrea (Cnidaria, Anthozoa, Scleractinia) and description of a new family through combined morphological and molecular analyses
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DOI：
10.1080/14772000.2012.744369
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发表时间：
2012-01-01
影响因子：
1.9
通讯作者：
Stolarski, Jaroslaw
中科院分区：
文献类型：
--
作者：
Benzoni, Francesca;Arrigoni, Roberto;Stolarski, Jaroslaw
单种属Craterastrea被分配到家庭Siderastreidae由于其隔膜微形态的相似性，Coalitaraea。根据珊瑚的宏观形态学特征，将其与伞菌科的细鳞菊属（Leptoseris）同系。从那时起，对它的研究就很少了，人们只从红海和北方印度洋查戈斯群岛相对较深的珊瑚礁环境中的少量标本中了解到它。博物馆的藏品使人们能够对来自塞舌尔、马达加斯加和南印度洋马约特岛的类型材料进行检查，并恢复珊瑚骨骼。最近在马约特岛进行的一次调查使人们得以在浅水和浑浊的珊瑚礁环境中对Craterastrea进行现场成像，并进行取样进行分子分析。分子分析结果与骨骼的微形态和微结构的研究结果一致，揭示了该属中唯一的种--Craterastrea levis与Leptoseris foliosa有很大的不同，Leptoseris foliosa与Craterastrea levis是同源的。此外，Craterastrea与Coscinaraea、Horastrea和Anomastreea关系密切。然而，这些属，目前归属于Siderastreidae，是遗传远离Siderastrea，家庭的模式属，和Pseudosiderastrea。因此，我们恢复属Craterastrea，描述了新的家庭Coquitaraeidae由于其深刻的进化分歧，从Siderastreidae，并提供修订的诊断的四个属的家庭。新的家庭的描述是一个具有挑战性的，但正在进行的修订过程中的石珊瑚分类的分子系统学革命的结果。
The monotypic genus Craterastrea was assigned to the family Siderastreidae owing to the similarity of its septal micromorphology to that of Coscinaraea. Subsequently, it was synonymized with Leptoseris, family Agariciidae, based on corallum macromorphology. Since then, it has remained poorly studied and has been known only from a small number of specimens from relatively deep reef environments in the Red Sea and the Chagos archipelago, northern Indian Ocean. Access to museum collections enabled examination of type material and the recovery of coral skeletons from the Seychelles, Madagascar, and Mayotte, southern Indian Ocean. A recent survey in Mayotte allowed the in situ imaging of Craterastrea in shallow and turbid reef environments and sampling for molecular analyses. The molecular analyses were in agreement with the examination of micromorphology and microstructure of skeletons by revealing that Craterastrea levis, the only species in the genus, differs much from Leptoseris foliosa, with which it was synonymized. Moreover, Craterastrea is closely related to Coscinaraea, Horastrea and Anomastraea. However, these genera, currently ascribed to the Siderastreidae, are genetically distant to Siderastrea, the family's type genus, and Pseudosiderastrea. Hence, we restore the genus Craterastrea, describe the new family Coscinaraeidae due to its deep evolutionary divergence from the Siderastreidae, and provide revised diagnoses of the four genera in the family. The description of the new family Coscinaraeidae is a further step in the challenging but ongoing process of revision of the taxonomy of scleractinian corals as a result of the molecular systematics revolution.