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A phylogenomic backbone for gastropod molluscs
Systematic Biology ( IF 6.1 ) Pub Date : 2022-06-29 , DOI: 10.1093/sysbio/syac045
Juan E Uribe 1, 2 , Vanessa L González 3 , Iker Irisarri 4, 5 , Yasunori Kano 6 , David G Herbert 7 , Ellen E Strong 1 , M G Harasewych 1
Affiliation  

Gastropods have survived several mass extinctions during their evolutionary history resulting in extraordinary diversity in morphology, ecology, and developmental modes, which complicate the reconstruction of a robust phylogeny. Currently, gastropods are divided into six subclasses: Caenogastropoda, Heterobranchia, Neomphaliones, Neritimorpha, Patellogastropoda, and Vetigastropoda. Phylogenetic relationships among these taxa historically lack consensus, despite numerous efforts using morphological and molecular information. We generated sequence data for transcriptomes derived from twelve taxa belonging to clades with little or no prior representation in previous studies in order to infer the deeper cladogenetic events within Gastropoda and, for the first time, infer the position of the deep-sea Neomphaliones using a phylogenomic approach. We explored the impact of missing data, homoplasy, and compositional heterogeneity on the inferred phylogenetic hypotheses. We recovered a highly supported backbone for gastropod relationships that is congruent with morphological and mitogenomic evidence, in which Patellogastropoda, true limpets, are the sister lineage to all other gastropods (Orthogastropoda) which are divided into two main clades (i) Vetigastropoda s.l. (including Pleurotomariida + Neomphaliones) and (ii) Neritimorpha + (Caenogastropoda + Heterobranchia). As such, our results support the recognition of five subclasses (or infraclasses) in Gastropoda: Patellogastropoda, Vetigastropoda, Neritimorpha, Caenogastropoda and Heterobranchia.

中文翻译:

腹足类软体动物的系统基因组骨架

腹足类动物在其进化历史中经历了几次大规模灭绝,导致形态、生态和发育模式的异常多样性,这使得重建强大的系统发育变得复杂。目前,腹足动物分为六个亚纲:Caenogastropoda、Heterobranchia、Neophaliones、Neritimorpha、Patellogastropoda 和 Vetigastropoda。这些分类群之间的系统发育关系历来缺乏共识,尽管使用形态学和分子信息进行了许多努力。我们生成了来自属于进化枝的 12 个分类群的转录组的序列数据,在以前的研究中很少或没有先前的代表性,以推断腹足纲中更深层次的进化枝发生事件,并首次使用系统基因组学方法。我们探讨了缺失数据、同质性和组成异质性对推断的系统发育假设的影响。我们恢复了一个高度支持的腹足动物关系骨干,这与形态学和有丝分裂基因组学证据一致,其中髌腹足纲,真正的帽贝,是所有其他腹足动物(Orthogastropoda)的姐妹谱系,分为两个主要进化枝(i) Vetigastropoda sl(包括Pleurotomariida + Neomphaliones) 和 (ii) Neritimorpha + (Caenogastropoda + Heterobranchia)。因此,我们的结果支持识别腹足纲中的五个亚类(或下类):Patellgastropoda、Vetigastropoda、Neritimorpha、Caenogastropoda 和 Heterobranchia。我们恢复了一个高度支持的腹足动物关系骨干,这与形态学和有丝分裂基因组学证据一致,其中髌腹足纲,真正的帽贝,是所有其他腹足动物(Orthogastropoda)的姐妹谱系,分为两个主要进化枝(i) Vetigastropoda sl(包括Pleurotomariida + Neomphaliones) 和 (ii) Neritimorpha + (Caenogastropoda + Heterobranchia)。因此,我们的结果支持识别腹足纲中的五个亚类(或下类):Patellgastropoda、Vetigastropoda、Neritimorpha、Caenogastropoda 和 Heterobranchia。我们恢复了一个高度支持的腹足动物关系骨干,这与形态学和有丝分裂基因组学证据一致,其中髌腹足纲,真正的帽贝,是所有其他腹足动物(Orthogastropoda)的姐妹谱系,分为两个主要进化枝(i) Vetigastropoda sl(包括Pleurotomariida + Neomphaliones) 和 (ii) Neritimorpha + (Caenogastropoda + Heterobranchia)。因此,我们的结果支持识别腹足纲中的五个亚类(或下类):Patellgastropoda、Vetigastropoda、Neritimorpha、Caenogastropoda 和 Heterobranchia。(包括 Pleurotomariida + Neomphaliones) 和 (ii) Neritimorpha + (Caenogastropoda + Heterobranchia)。因此,我们的结果支持识别腹足纲中的五个亚类(或下类):Patellgastropoda、Vetigastropoda、Neritimorpha、Caenogastropoda 和 Heterobranchia。(包括 Pleurotomariida + Neomphaliones) 和 (ii) Neritimorpha + (Caenogastropoda + Heterobranchia)。因此,我们的结果支持识别腹足纲中的五个亚类(或下类):Patellgastropoda、Vetigastropoda、Neritimorpha、Caenogastropoda 和 Heterobranchia。
更新日期:2022-06-29
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