https://scholars.lib.ntu.edu.tw/handle/123456789/629658
標題: | Molecular evidence shows low species diversity of coral-associated hydroids in Acropora corals | 作者: | Fontana, Silvia Keshavmurthy, Shashank Hsieh, Hernyi Justin VIANNEY DENIS Kuo, Chao-Yang Hsu, Chia-Ming Leung, Julia K L Tsai, Wan-Sen Wallace, Carden C Chen, Chaolun Allen |
關鍵字: | CNIDARIA HYDROZOA; SULAWESI SEA; PHYLOGENETICS; EVOLUTION; ZANCLEA; MODEL; DNA | 公開日期: | 29-十一月-2012 | 出版社: | PUBLIC LIBRARY SCIENCE | 卷: | 7 | 期: | 11 | 來源出版物: | PloS one | 摘要: | A novel symbiosis between scleractinians and hydroids (Zanclea spp.) was recently discovered using taxonomic approaches for hydroid species identification. In this study, we address the question whether this is a species-specific symbiosis or a cosmopolitan association between Zanclea and its coral hosts. Three molecular markers, including mitochondrial 16S and nuclear 28S ribosomal genes, and internal transcribed spacer (ITS), were utilized to examine the existence of Zanclea species from 14 Acropora species and 4 other Acroporidae genera including 142 coral samples collected from reefs in Kenting and the Penghu Islands, Taiwan, Togian Island, Indonesia, and Osprey Reef and Orpheus Island on the Great Barrier Reef, Australia. Molecular phylogenetic analyses of the 16S and 28S genes showed that Acropora-associated Zanclea was monophyletic, but the genus Zanclea was not. Analysis of the ITS, and 16S and 28S genes showed either identical or extremely low genetic diversity (with mean pairwise distances of 0.009 and 0.006 base substitutions per site for the 16S and 28S genes, respectively) among Zanclea spp. collected from diverse Acropora hosts in different geographic locations, suggesting that a cosmopolitan and probably genus-specific association occurs between Zanclea hydroids and their coral hosts. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/629658 | ISSN: | 1932-6203 | DOI: | 10.1371/journal.pone.0050130 |
顯示於: | 海洋研究所 |
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