Diversity, Distribution and Phylogeny of Hesionidae (Annelida) Colonizing Whale Falls: New Species of Sirsoe and Connections Between Ocean Basins
Diversity, Distribution and Phylogeny of Hesionidae (Annelida) Colonizing Whale Falls: New Species of Sirsoe and Connections Between Ocean Basins
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DOI：
10.3389/fmars.2019.00478
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发表时间：
2019-08
影响因子：
3.7
通讯作者：
M. Shimabukuro;Orlemir Carrerette;Joan M. Alfaro-Lucas;Alexandra E. Rizzo;K. Halanych;P. Sumida
中科院分区：
文献类型：
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作者：
M. Shimabukuro;Orlemir Carrerette;Joan M. Alfaro-Lucas;Alexandra E. Rizzo;K. Halanych;P. Sumida
鲸群福尔斯是深海生态系统中生物多样性、连通性和进化新奇的重要环境。尽管如此，这些知识大部分是基于东北太平洋盆地的研究。有趣的是，西南大西洋唯一已知的自然鲸鱼瀑布与其他深海盆地的尸体具有动物群组成的亲和力。在这具尸体中，属于Hesionidae的环节蠕虫数量丰富，种类丰富，包括与东北太平洋的一些共享物种。在这里，我们评估的Hesionidae在西南大西洋的多样性，使用新的信息植入鲸骨，并探讨是否有些物种有跨流域分布，或者如果他们代表在不同的流域的神秘物种。我们描述了，使用形态学和分子数据，共10个新的hesionid物种和报告的一个新的谱系Sirsoe 'BioSuOr'，没有正式描述。两个只在深海化能合成环境中发现的hesionids，SirsoePleijel（1998）和VrijenhoekiaPleijel等人（2008），主要是通过前者的中间触角的存在和后者的缺失来区分的。然而，我们的分析表明，Vrijenhoekia应与Sirsoe同步，因此我们修正了Sirsoe的诊断。我们还强调了Sirsoe balaenophila comb. nov.和S.西南大西洋鲸鱼福尔斯的sirikos证实了它们的跨流域分布。COI和16 SrDNA数据表明，S. balaenophila comb. nov.也包括大西洋西南部的隐种（S. pirapuan sp. nov.和S. ypupiara sp. nov），也可能分布于太平洋（本文将其命名为S. balaenophila lineage-2）。新种S. maximiano，是共享之间的鲸鱼福尔斯从西南大西洋和喷口网站从开曼群岛中部蔓延中心。我们的数据增加了越来越多的文献，显示物种在深海盆地和同源深海环境之间共享。Zoobank注册出版物LSID - urn：lsid：zoobank.org：pub：7 E891 B1 D-DCE 4 - 45 C8 - 83 F4 - 8586 D286 B327。
Whale falls are important environments contributing to biodiversity, connectivity and evolutionary novelty in deep-sea ecosystem. Notwithstanding, most of this knowledge is based in studies from NE Pacific basin. Interestingly, the only known natural whale fall on the SW Atlantic has faunal composition affinities with carcasses from other deep-ocean basins. In this carcass, annelid worms belonging to Hesionidae are abundant and species-rich, and include some shared species with NE Pacific Ocean. Here we evaluate the diversity of Hesionidae on the SW Atlantic using new information of implanted whale bones and explore whether some species have interbasin distribution or if they represent cryptic species in different basins. We described, using morphological and molecular data, a total of 10 new hesionid species and report of a new lineage Sirsoe ‘BioSuOr,’ not formally described herein. Two hesionids found exclusively in deep-sea chemosynthetic environments, SirsoePleijel (1998) and VrijenhoekiaPleijel et al. (2008), are primarily distinguished from each other by the presence of a median antenna on the former and its absence on the latter. However, our analyses showed that Vrijenhoekia should be synonymized with Sirsoe and for this reason we emended the diagnosis of Sirsoe. We also emphasized the presence of Sirsoe balaenophila comb. nov. and S. sirikos in SW Atlantic whale falls confirming their interbasin distribution. Moreover, COI and 16S rDNA data reveal that S. balaenophila comb. nov. also comprises cryptic species on the SW Atlantic (S. pirapuan sp. nov. and S. ypupiara sp. nov) and perhaps also in the Pacific Ocean (herein named as S. balaenophila lineage-2). The new species, S. maximiano, is shared between whale falls from SW Atlantic and vent sites from Mid-Cayman Spreading Center. Our data adds to the growing literature showing species are shared between deep ocean basins and among cognate deep-sea environments. Zoobank registration publication LSID - urn:lsid:zoobank.org:pub:7E891B1D-DCE4-45C8-83F4-8586D286B327.