A new ring nematode, Xenocriconemella costaricense sp. nov., (Nematoda: Criconematidae) from Costa Rica.

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
W Peraza-Padilla, J Aráuz-Badilla, C Cantalapiedra-Navarrete, J E Palomares-Rius, A Archidona-Yuste, P Castillo
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引用次数: 0

Abstract

During nematode surveys of natural vegetation in forests of La Cima de Copey de Dota, San José, San José province, Costa Rica, a Xenocriconemella species closely resembling X. macrodora and related species was found. Integrative taxonomical approaches demonstrated that it is a new species described herein as X. costaricense sp. nov. The new species is parthenogenetic (only females have been detected) and characterised by a short body (276-404 μm); lip region with two annuli, not offset, not separated from body contour; first lip annulus partially covering the second lip annulus. Stylet thin, very long (113-133 μm) and flexible, occupying 30.5-47.8% of body length. Excretory pore located from one or two annuli anterior to one or two annuli posterior to level of stylet knobs, at 42 (37-45) μm from anterior end. Female genital tract monodelphic, prodelphic, outstretched, and occupying 35-45% of body length, with vagina slightly ventrally curved (14-18 μm long). Anus located 6-11 annuli from the tail terminus. Tail conoid and bluntly rounded terminus, the last 2-3 annuli oriented dorsally. Results of molecular characterisation and phylogenetic analyses of D2-D3 expansion segments of 28S rRNA, ITS, and partial 18S rRNA, as well as cytochrome oxidase c subunit 1 gene sequences further characterised the new species and clearly separated it from X. macrodora and other related species (X. iberica, X. paraiberica, and X. pradense).

来自哥斯达黎加的一种新的环状线虫 Xenocriconemella costaricense sp.
在哥斯达黎加圣何塞省圣何塞市 La Cima de Copey de Dota 森林的自然植被中进行线虫调查时,发现了一种与 X. macrodora 及相关物种非常相似的 Xenocriconemella 物种。综合分类方法证明这是一个新物种,在此描述为 X. costaricense sp.该新种为孤雌生殖(仅发现雌性),其特征为身体较短(276-404 μm);唇区有两个环,不偏移,与身体轮廓不分离;第一唇环部分覆盖第二唇环。花柱细而长(113-133 μm),富有弹性,占体长的 30.5-47.8%。排泄孔位于花柱钮前方的一个或两个环至后方的一个或两个环之间,距前端 42(37-45)微米。雌性生殖道单一,前伸,占体长的 35-45%,阴道略向腹侧弯曲(长 14-18μm)。肛门位于距离尾端 6-11 环的位置。尾部呈圆锥形,末端钝圆,最后 2-3 个环状突起朝向背面。对 28S rRNA、ITS 和部分 18S rRNA 的 D2-D3 扩增片段以及细胞色素氧化酶 c 亚单位 1 基因序列进行分子鉴定和系统发育分析的结果进一步确定了该新物种的特征,并将其与 X. macrodora 及其他相关物种(X. iberica、X. paraiberica 和 X. pradense)明确区分开来。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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