A new glass sponge genus (Hexactinellida: Euplectellidae) from abyssal depth of the Yap Trench, northwestern Pacific Ocean
A new glass sponge genus (Hexactinellida: Euplectellidae) from abyssal depth of the Yap Trench, northwestern Pacific Ocean
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来自西北太平洋雅浦海沟深海的一个新玻璃海绵属（Hexactinellida：Euplectellidae）
DOI：
10.11646/zootaxa.4567.2.9
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发表时间：
2019
期刊：
影响因子：
0.9
通讯作者：
Wang Chunsheng
中科院分区：
文献类型：
--
作者：
Shen Chengcheng;Dohrmann Martin;Zhang Dongsheng;Lu Bo;Wang Chunsheng
本文报道了一种新发现的六针海绵--亚普根藻Rhizophyta yapensis gen.et sp. nov.，该样品采自西北太平洋雅普海沟4159-4779 m深海。它的真菌状的身体形式，长柄和缺乏皮下组织建议放置在Euplectellidae亚科Bolosominae Tabachnick，2002，而分子系统发育的证据表明，它是姐妹所有剩余的Euplectellidae灰色，1867。它的根生附着的方法，迄今为止未知的bolosomine Euplectellidae，面纱的pentactins覆盖的花序梗，和存在的齿状discohexasters作为唯一类型的microscleres，清楚地将其描述为一个新属。用形态学和分子生物学方法研究了新种正模和近模的种内分化。这份报告是首次记录的hexactinellid海绵从雅普海沟。
In this article we report on a hexactinellid sponge new to science, Rhizophyta yapensis gen. et sp. nov., which was collected from the Yap Trench in the northwestern Pacific Ocean at an abyssal depth of 4159-4779 m. Its fungus-like body form with long peduncle and absence of hypodermalia suggest placement within the euplectellid subfamily Bolosominae Tabachnick, 2002, whereas molecular phylogenetic evidence suggests that it is sister to all remaining Euplectellidae Gray, 1867. Its rhizophytous method of attachment to the substrate, hitherto unknown from bolosomine Euplectellidae, a veil of pentactins covering the peduncle, and the presence of toothed discohexasters as the only type of microscleres, clearly characterize it as a new genus. The intraspecific divergence between holotype and paratypes of the new species is examined with both morphological and molecular approaches. This report represents the first record of a hexactinellid sponge from the Yap Trench.