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首页> 外文期刊>Malacologia >DECONSTRUCTING DENDROPOMA: A SYSTEMATIC REVISION OF A WORLD-WIDE WORM-SNAIL GROUP, WITH DESCRIPTIONS OF NEW GENERA (CAENOGASTROPODA: VERMETIDAE)
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DECONSTRUCTING DENDROPOMA: A SYSTEMATIC REVISION OF A WORLD-WIDE WORM-SNAIL GROUP, WITH DESCRIPTIONS OF NEW GENERA (CAENOGASTROPODA: VERMETIDAE)

机译：解构的树突状瘤：全球性的蠕虫-蛇群的系统性修订，并描述了新世代（CAENOGASTROPODA：VERMETIDAE）

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Identifying natural groups within the caenogastropod family Vermetidae has proven challenging. The sessile lifestyle of vermetids, with associated xenomorphically distorted, overgrown and corroded shells, has resulted in a long and confused taxonomic history based primarily on adult shell characters. In this study, we use morphological, anatomical and molecular data to clarify systematics and phylogenetic relationships within the genus Dendropoma s.L We assess generic names previously used in the Dendropoma group for availability and recognize Veristoa lredale, 1937, as a junior synonym of Dendropoma Morch, 1861. We describe 21 species, eight of which are new, place them into four robustly supported genera (Dendropoma s.s.; Novastoa Finlay, 1926; Ceraesignum n. gen.; Cupolaconcha n. gen.), and outline the current state of knowledge of the distribution of these taxa. The genus Den dropoma s.s. is well supported in our phylogenetic analysis and is additionally supported by features of the operculum, reproductive traits and a novel mitochondria] gene order. Among the four genera, members of Dendropoma s.s. alone maintain unstalked egg capsules in the mantle cavity rather than attaching them to the shell via a slit in the female mantle. The opercula of examined species within the genus Novastoa are characterized by a well-developed mammilla on the internal surface and upright tightly packed spiral lamina on the external surface. In Ceraesignum n. gen., the operculum lacks a mammilla and displays a fingerprint-like texture on its inner surface. The genera Ceraesignum n. gen. and Novastoa form a well-supported monophyletic group with the genus Dendropoma s.s., although sister group relationships among these genera are not resolved. The fourth genus, Cupolaconcha n. gen. is more closely related to the vermetid genera Eualetes Keen, 1971a, Thylaeodus March, 1860, and Petaloconchus Lea, 1843, demonstrating that Dendropoma s.L is not a monophyletic group. The calcified operculum of Cupolaconcha n. gen. is unique in the Vermetidae and examined species in this genus are also characterized by a translocation of the valine mitochondria! tRNA. Further study will encompass the full range of morphological diversity in the Vermetidae to clarify the major lineages within this remarkable family of snails.
机译：事实证明，鉴定腹足动物Vermetidae内的自然群体具有挑战性。 met节虫的固执生活方式，伴随着异形变形，长满和腐蚀的外壳，导致了主要基于成年外壳特征的漫长而混乱的分类学历史。在这项研究中，我们使用形态学，解剖学和分子数据来阐明Dendropoma sL属内的系统关系和系统发育关系。我们评估了先前在Dendropoma组中使用的通用名称，以确认其可用性，并认可1937年的Veristoa lredale作为Dendropoma Morch的初级同义词， 1861年。我们描述了21种，其中8种是新的，将它们分为四个有力支持的属（登普托玛属； Novastoa Finlay，1926年； Ceraesignum n。gen。； Cupolaconcha n。gen。），并概述了有关这些分类单元的分布。 Den dropoma s.s.在我们的系统发育分析中得到了很好的支持，并且the的特征，生殖性状和新的线粒体基因顺序也得到了支持。在四个属中，Dendropoma s.s.的成员。单独将不带茎的卵囊保持在套腔中，而不是通过雌性套中的狭缝将它们附在壳上。 Novastoa属中被检种的盖的特征是在内表面上发育良好的乳头和外表面上直立紧密堆积的螺旋叶片。在Ceraesignum中。例如，盖膜没有乳头并且在其内表面上显示出指纹状的纹理。 Ceraesignum属。 gen。尽管Nortostoa和Novastoa与Dendropoma属之间的姐妹组关系尚未解决，但它们与Dendropoma s.s.组成了一个得到良好支持的单系群体。第四属，cupolaconcha n。 gen。与1971a的Eualetes Keen，1860年3月的Thylaeodus和1843年的Petaloconchus Lea的类属密切相关，这表明Dendropoma s.L不是单系类。钙化的穹Cup孔盖。 gen。在Vermetidae中是独特的，该属中经过检查的物种还具有缬氨酸线粒体易位的特征！ tRNA。进一步的研究将涵盖Vermetidae的所有形态多样性，以阐明这个非凡的蜗牛家族中的主要谱系。

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