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Phylogeny and New Classification of Hydrothermal Vent and Seep Shrimps of the Family Alvinocarididae (Decapoda)

机译:Alvinocarididae(Decapoda)家族热液通风孔和渗水虾的系统发育和新分类

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摘要

The paper addresses the phylogeny and classification of the hydrothermal vent shrimp family Alvinocarididae. Two morphological cladistic analyses were carried out, which use all 31 recognized species of Alvinocarididae as terminal taxa. As outgroups, two species were included, both representing major caridean clades: Acanthephyra purpurea (Acanthephyridae) and Alpheus echiurophilus (Alpheidae). For additional support of the clades we utilised available data on mitochondrial Cytochrome c Oxidase I gene (CO1) and 16S ribosomal markers. Both morphological and molecular methods resulted in similar tree topologies and nearly identical clades. We consider these clades as evolutionary units and thus erect two new subfamilies: Rimicaridinae (Alvinocaridinides, Manuscaris, Opaepele, Shinkaicaris, Rimicaris), Alvinocaridinae (Alvinocaris), whilst recognising Mirocaridinae (with genera Mirocaris and Nautilocaris) at subfamily level. One genus, Keldyshicaris could not be assigned to any subfamily and is thus left as incertae sedis. The monophyly of Alvinocardinae was supported by morphological data, but not supported by molecular data (two analyses); the monophyly of all subfamilies was supported both by morphological and molecular data. Chorocaris is herein synonymized with Rimicaris, whilst Opaepele vavilovi is herein transferred to a new genus Keldyshicaris. Morphological trends within Alvinocarididae are discussed and short biogeographical remarks are given. We provide emended diagnoses for all subfamilies and genera along with keys to all recognized species.
机译:该论文探讨了热液喷发虾科Alvinocarididae的系统发育和分类。进行了两个形态学分类分析,使用所有31种公认的Alvinocarididae物种作为末端分类单元。作为分组,包括两个物种,两个物种都代表主要的凯迪亚进化枝:紫叶棘皮草(Acanthephyridae)和棘皮嗜藻(Alpheus echiurophilus)(Alpheidae)。为了进一步支持进化枝,我们利用了线粒体细胞色素c氧化酶I基因(CO1)和16S核糖体标记物的可用数据。形态学和分子方法均导致相似的树形拓扑和近乎相同的进化枝。我们将这些进化枝视为进化单位,因此建立了两个新的亚科:Rimicaridinae(Alvinocaridinides,Manuscaris,Opaepele,Shinkaicaris,Rimicaris),Alvinocaridinae(Alvinocaris),同时在亚科水平上识别了Mirocaridinae(Mirocaris和Nautilocaris属)。 Keldyshicaris是一个属,不能分配给任何亚科,因此被保留为不动产。 Alvinocardiinae的一面体得到形态学数据的支持,但不受分子数据的支持(两次分析)。形态和分子数据都支持所有亚科的单亲。 Chorocaris在本文中与Rimicariss同义,而瓦帕洛夫Opaepele vavilovi在本文中被转移到新的凯氏藻属。讨论了Alvinocarididae内的形态学趋势,并简要介绍了生物地理学方面的言论。我们提供所有亚科和属的改良诊断,以及所有公认物种的关键。

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