A new rare nematode Nothocriconemoides hangzhouensis n. sp. (Nematoda: Criconematidae) from Hangzhou, China
A new rare nematode Nothocriconemoides hangzhouensis n. sp. (Nematoda: Criconematidae) from Hangzhou, China
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一种新的珍稀线虫Nothocriconemoideshangzhouensis n.
DOI：
10.21307/jofnem-2020-006
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发表时间：
2020-01
影响因子：
1.3
通讯作者：
Zheng Jingwu
中科院分区：
文献类型：
--
作者：
Maria Munawar;Miao Wentao;Cai Ruihang;Castillo Pablo;Zheng Jingwu
环线虫科(Criconematidae)通常被称为环状线虫，包括一些具有重要经济意义的成员，如植物寄生虫。在浙江省线虫资源调查中，在榆树根际发现了线虫属一新种--中国线虫。杭州新种Nothocriconemoides n.sp.其特征是女性身体有环状细小的纵向条纹，在身体的后半部分有2到3个吻合口。第一个头环是圆形的，围绕着嘴唇区域扩大，第二个环是狭窄的，偏置的，领状。正面图显示中央隆起的唇盘，有四个大小不同的等大小的近正中叶和“I”形口腔小孔。排泄孔位于食管球后3-4环。阴道笔直，外阴闭合。在大多数个体中，外阴后环的腹侧是内翻的。肛门模糊不清，位于外阴后的下一环上。尾巴短，圆锥形，顶端分叉或分枝。幼鱼的唇部没有领状的环状结构。头区有两个圆形的环状结构，第一个环状结构在中间略有凹陷。身体环上有细小的皱纹。肛门模糊不清，距尾端3~4圈。尾巴为短端，末端为单一的浅裂末端。基于对28 S rRNA、其rRNA、部分18 S rRNA和coxi基因D2-D3扩展片段的系统发育分析表明，该新种与其他环线虫物种形成了一个独立的分支，从而支持其为该属的一个新种。该新种与中华圆盘藻关系密切。此外，这也是中国发现的新记录属。
Abstract The Family Criconematidae is commonly referred as ring nematodes that include some members with economic importance as plant parasites. During a recent nematode inventory survey at Zhejiang Province, China, a new species of genus Nothocriconemoides was detected in the rhizosphere of elm tree. Nothocriconemoides hangzhouensis n. sp. can be characterized by the female body having annuli with fine longitudinal striations and 2 to 3 anastomoses at the posterior half of the body. The first cephalic annulus is rounded and expanded enclosing the lip region, and the second annulus is narrow, offset, collar like. En face view shows a central elevated labial disk bearing four distinct equal-sized submedian lobes and “I” shaped oral aperture. Excretory pore is located 3–4 annuli posterior to esophageal bulb. Vagina is straight and vulva closed. The ventral side of postvulval annuli is inverted, in majority of individuals. Anus is indistinct and located on the next annuli posterior to vulva. Tail is short, conoid, with forked or branched terminus. Juveniles are devoid of collar-shaped annuli in the lip region. The cephalic region has two rounded annuli where the first annulus shows slight depression in the middle. Body annuli are finely crenated. Anus is indistinct and located 3 to 4 annuli from tail terminus. Tail is short ending in a single lobed terminus. Phylogenetic studies based on analysis of the D2–D3 expansion segments of the 28 S rRNA, ITS rRNA, partial 18 S rRNA, and coxI gene revealed that the new species formed a separate clade from other criconematid species, thereby supporting its status as a new species of the genus. The new species showed close relationships with Discocriconemella sinensis. Additionally, this is the first record of genus Nothocriconemoides from China.
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影响因子：
10.7
作者：
Castresana, J
通讯作者：
Castresana, J
Discocriconemella sinensis n. 的描述
影响因子：
1.2
作者：
Maria, Munawar;Cai, Ruihang;Zheng, Jingwu
通讯作者：
Zheng, Jingwu
影响因子：
1.4
作者：
B. Ebsary
通讯作者：
B. Ebsary
DOI：
10.1007/978-1-4684-9016-9
发表时间：
1988
期刊：
--
影响因子：
--
作者：
R. Fortuner
通讯作者：
R. Fortuner
DOI：
--
发表时间：
2012
期刊：
--
影响因子：
--
作者：
R. Manzanilla-López;N. Marbán-Mendoza
通讯作者：
R. Manzanilla-López;N. Marbán-Mendoza