A molecular phylogeny of carcinoecium-forming Epizoanthus (Hexacorallia: Zoantharia) from the Western Pacific Ocean with descriptions of three new species
A molecular phylogeny of carcinoecium-forming Epizoanthus (Hexacorallia: Zoantharia) from the Western Pacific Ocean with descriptions of three new species
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DOI：
10.1080/14772000.2019.1693439
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发表时间：
2019-12-13
影响因子：
1.9
通讯作者：
Reimer, James Davis
中科院分区：
文献类型：
--
作者：
Kise, Hiroki;Montenegro, Javier;Reimer, James Davis
许多刺胞动物都被报道与寄居蟹有联系，从浅水沃茨到深海。其中一些海葵纲和虫纲动物会产生一种癌囊，一种类似几丁质的假壳。许多研究已经进行了寄居蟹-actiniarian共生，而寄居蟹-zoantharian共生受到较少的关注，由于标本采集的困难，因为它们只在深海中发现。本研究从西太平洋采集了11个寄生蟹的癌团形成标本。我们正式将采集的标本描述为Epizoanthus xenomorphoideus sp. nov.，E. australissp. nov.，和E.根据COI、mt 12 S-rDNA、mt 16 S-rDNA、18 S-rDNA、ITS-rDNA的分子系统发育分析和形态学观察，对柳珊瑚gorgonussp. nov.我们的系统发育结果表明，有两个不同的亚支内carcinoecium分支，这些亚支具有不同的外部形态。进一步的研究与更多的分类单元采样将使更全面的评价的演化和系统发育关系的carcinoecium-forming zoantharian物种。
Many cnidarians have been reported in association with hermit crabs from shallow waters to the deep sea. Some of these actiniarians and zoantharians produce a carcinoecium, a chitin-like pseudo-shell. Many studies have been conducted on hermit crab-actiniarian symbioses, while hermit crab-zoantharian symbioses have received less attention due to the difficulty of specimen collection as they are exclusively found in the deep sea. In this study, 11 carcinoecium-forming specimens associated with hermit crabs of several genera were collected from the western Pacific Ocean. We formally described the collected specimens as Epizoanthus xenomorphoideus sp. nov., E. australis sp. nov., and E. gorgonus sp. nov. based on results of molecular phylogenetic analyses (COI, mt 12S-rDNA, mt 16S-rDNA, 18S-rDNA, ITS-rDNA) and morphological observations. Our phylogenetic results showed that there are two different subclades within a carcinoecium clade, and these subclades have different external morphologies. Further studies with more taxon sampling will enable a more comprehensive evaluation of the evolution and phylogenetic relationships of carcinoecium-forming zoantharian species.