Rice Lauren N, Tovar-Hernández María Ana, Ellison Christina I, Young Craig M
University of Oregon, Oregon Institute of Marine Biology, Charleston, OR, United States of America University of Oregon, Oregon Institute of Marine Biology Charleston, OR United States of America.
Universidad Autónoma de Nuevo León, San Nicolás de Los Garza, Nuevo León, Mexico Universidad Autónoma de Nuevo León San Nicolás de Los Garza, Nuevo León Mexico.
Biodivers Data J. 2025 Mar 18;13:e139552. doi: 10.3897/BDJ.13.e139552. eCollection 2025.
Sabellid species are known to have a broad depth distribution and have been reported from various deep-sea habitats, including chemosynthetic systems. Despite this presence, only two species have been identified from deep water chemosynthetic habitats and only one has been identified to species. When examining hydrocarbon seep systems along the Upper Louisiana Slope in the Gulf of Mexico, we observed an abundant sabellid species new to science. The characters for the collected specimens did not match any existing genus.
The description for the new sabellid genus and species are presented, supported by external morphology and DNA sequence data (cytochrome c oxidase I). gen. nov., sp. nov. are gregarious, facultative hyper-epibionts within the examined methane seep communities and, seemingly, have a blend of morphological features of the genera and . Specimens also have several distinctive characters including the presence of a pair of peristomial chambers between the ventral lappets and parallel lamellae and the short, button-like shape of the radiolar tips. Abundance estimates for gen. nov., sp. nov. within the seep habitats are also presented.
帚毛虫物种具有广泛的深度分布，并且已在包括化学合成系统在内的各种深海栖息地中被报道。尽管存在这种情况，但仅从深水化学合成栖息地中鉴定出两个物种，且只有一个被鉴定到种。在检查墨西哥湾上路易斯安那斜坡沿线的烃类渗漏系统时，我们发现了一种科学界新发现的丰富的帚毛虫物种。所采集标本的特征与任何现有属均不匹配。
给出了新的帚毛虫属和种的描述，并辅以外部形态学和DNA序列数据（细胞色素c氧化酶I）。新属、新种在被检查的甲烷渗漏群落中是群居的兼性超附生生物，并且似乎具有帚毛虫属和蛰龙介属的形态特征的混合。标本还具有几个独特的特征，包括在腹叶和平行鳃叶之间存在一对围口腔，以及放射状触手末端呈短纽扣状。还给出了新属、新种在渗漏栖息地中的丰度估计。
