A new Lamellibrachia species and confirmed range extension for Lamellibrachia barhami (Siboglinidae, Annelida) from Costa Rica methane seeps
A new Lamellibrachia species and confirmed range extension for Lamellibrachia barhami (Siboglinidae, Annelida) from Costa Rica methane seeps
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哥斯达黎加甲烷渗漏中的一个新的 Lamellibrachia 物种和已确认的 Lamellibrachia barhami（Siboglinidae，Annelida）的范围扩展
DOI：
10.11646/zootaxa.4504.1.1
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发表时间：
2018
期刊：
影响因子：
0.9
通讯作者：
ROUSE, GREG W.
中科院分区：
文献类型：
--
作者：
MCCOWIN, MARINA F.;ROUSE, GREG W.
Lamellibrachia Webb，1969有八个目前已知的物种，来自太平洋，大西洋和地中海的化能合成环境。其中，Lamellibrachia barhami Webb，1969已在加拿大至哥斯达黎加的东太平洋地区报道。在这项研究中，从哥斯达黎加边缘采样的Lamellibrachia管虫的系统发育分析证实了L。barhami和揭示了一个新的Lamellibrachia物种从一个单一的甲烷渗漏之间的999和1,040米。东沃尔什板臂虫新种在遗传和形态上与所有同属种都不同。尽管它在地理上接近东太平洋L。巴尔哈米湖donwalshi sp. nov.与大西洋和地中海的Lamellibracia种组成一个分支。这表明在大西洋辐射之后可能发生了一次替代事件。
Lamellibrachia Webb, 1969 has eight currently recognized species reported from chemosynthetic environments in the Pacific, Atlantic, and Mediterranean. Of these, Lamellibrachia barhami Webb, 1969 has been reported in the eastern Pacific from Canada to Costa Rica. In this study, phylogenetic analyses of Lamellibrachia tubeworms sampled from the Costa Rica margin confirm the large geographic range of L. barhami and reveal a new Lamellibrachia species from a single methane seep between 999 and 1,040 meters. Lamellibrachia donwalshi sp. nov. differs genetically and morphologically from all congeneric species. Despite its geographic proximity to the eastern Pacific L. barhami, L. donwalshi sp. nov. formed a clade with Atlantic and Mediterranean Lamellibrachia species. This suggests a vicariant event may have occurred after an Atlantic radiation of Lamellibrachia.