World-wide whale worms?: A new species of Osedax from the shallow north Atlantic
World-wide whale worms?: A new species of Osedax from the shallow north Atlantic
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DOI：
10.1098/rspb.2005.3275
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发表时间：
2005-12-22
影响因子：
4.7
通讯作者：
Dahlgren, TG
中科院分区：
文献类型：
--
作者：
Glover, AG;Källström, B;Dahlgren, TG
我们从瑞典西部北大西洋浅海的一具鲸鱼尸体中发现了一种新的以鲸骨为食的siboglinid蠕虫属——Osedax。以前只在东北太平洋深海（1500-3000米）的鲸落中有记录，这是第一个在大陆架深度的鲸落中发现的Osedax物种，也是第一个在大西洋发现的物种。新物种Osedax mucofloris sp. n.在北海浅海125米深的小须鲸尸体（Balaenoptera acutorostrata）实验植入的骨头上大量存在。mucofloris可以在水族馆保存的骨头上培养。O. mucofloris在北海浅层和东北太平洋的存在表明了Osedax分支在鲸落上的全球分布。线粒体细胞色素氧化酶的分子证据。（CO1）和18S rRNA序列表明，O. mucofloris具有很高的扩散率，并为鲸落在生态和进化过程中作为siboglinids环节动物全球扩散的“垫脚石”的观点提供了支持。
We describe a new species of the remarkable whalebone-eating siboglinid worm genus, Osedax, from a whale carcass in the shallow north Atlantic, west of Sweden. Previously only recorded from deep-sea (1500-3000 m) whale-falls in the northeast Pacific, this is the first species of Osedax known from a shelf-depth whale-fall, and the first from the Atlantic Ocean. The new species, Osedax mucofloris sp. n., is abundant on the bones of an experimentally implanted Minke whale carcass (Balaenoptera acutorostrata) at 125 m depth in the shallow North Sea. O. mucofloris can be cultured on bones maintained in aquaria. The presence of O. mucofloris in the shallow North Sea and northeast Pacific suggests global distribution on whale-falls for the Osedax clade. Molecular evidence from mitochondrial cytochrome oxidase 1. (CO1) and 18S rRNA sequences suggests that O. mucofloris has high dispersal rates, and provides support for the idea of whale-falls acting as 'stepping-stones' for the global dispersal of siboglinid annelids over ecological and evolutionary time.