世界旅行家:单性生殖和生态耐受性使广泛分布的短尾鞭虫、斑腹蛛(Schizomida:Hubbardiidae)能够进行多次殖民活动

IF 3.2 1区 农林科学 Q1 ENTOMOLOGY
Rodrigo Monjaraz-Ruedas, O. Francke, L. Prendini
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引用次数: 3

摘要

尽管形态学仍然是诊断和描述短尾鞭蝎或裂殖蛛的有力工具(裂殖蛛目Petrunkevich,1945),特别是当两性成虫都有时,但由于这些形态保守的蛛形纲动物缺乏特征,一些裂殖蛛分类群的系统学很难解决。Chamberlin Stenochrus portoricensis,1922年,根据女性受精囊的单一特征定义,是新大陆最广泛的分裂症。从美国南部到巴西,整个加勒比地区,以及更远的地方,包括加拉帕戈斯群岛和欧洲,新热带地区的许多记录都提出了一个问题,即港口S.portoricensis是否真的是一个广泛分布的物种,还是一个形态保守的多个物种的复合体?本研究使用了多焦点数据集和目前可用的最广泛的地理样本,通过分子差异定年和Stenochrus Chamberlin所有已知物种的祖先区域重建,解决了portoricensis的系统地理学问题,1922年。分析结果显示,肥胖链球菌为系旁型。两个先前被同义的物种被重新验证并转移到Stenochrus。种群结构分析恢复了S.portoricensis的剩余样本,将其作为一个单一的单系物种,具有较低的遗传差异,并包括两个亚群。祖先区域的重建表明Stenochrus起源于中美洲,它包含一个广泛的物种,最近被引入多个地方。欧洲和加勒比地区的引种是从墨西哥尤卡坦半岛的一个单一分支开始的,在该分支内遗传差异最小,这证实了多个独立引种的假设,并通过孤雌生殖促进了成功的定殖。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
World Travelers: Parthenogenesis and Ecological Tolerance Enable Multiple Colonization Events by the Widespread Short-Tailed Whipscorpion, Stenochrus portoricensis (Schizomida: Hubbardiidae)
Whereas morphology remains a powerful tool for the diagnosis and description of short-tailed whip scorpions, or schizomids (Order Schizomida Petrunkevitch, 1945), especially when adults of both sexes are available, the systematics of some schizomid taxa is difficult to resolve due to a lack of characters in these morphologically conserved arachnids. Stenochrus portoricensis Chamberlin, 1922, defined on a single character of the female spermathecae, is the most widespread schizomid in the New World. Numerous records in the Neotropics, from the southern United States to Brazil, throughout the Caribbean, and further afield, including the Galapagos Islands and Europe, raise the question as to whether S. portoricensis is indeed a single widespread species or a complex of multiple species with conserved morphology? The present study uses a multilocus dataset and the broadest geographical sample currently available to address the phylogeography of S. portoricensis with molecular divergence dating and ancestral area reconstruction of all currently known species of Stenochrus Chamberlin, 1922. Analyses recovered S. portoricensis as paraphyletic. Two species previously synonymized are revalidated and transferred to Stenochrus. Population structure analyses recovered the remaining samples of S. portoricensis as a single monophyletic species with low genetic divergence and comprising two subclades. Ancestral area reconstruction suggests a Mesoamerican origin for Stenochrus, which contains a widespread species, recently introduced to multiple localities. Introductions to Europe and the Caribbean occurred from a single clade in the Yucatán Peninsula, Mexico, within which genetic divergence is minimal, confirming the hypothesis of multiple independent introductions with successful colonization facilitated by parthenogenetic reproduction.
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来源期刊
CiteScore
5.30
自引率
8.80%
发文量
34
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