Two new free-living nematode species (Nematoda: Cyatholaimidae) from intertidal sediments of the Yellow Sea, China

	Two new free-living nematode species (Nematoda: Cyatholaimidae) from intertidal sediments of the Yellow Sea, China
	Huang, Yong1 ; Xu, Kuidong2 ; Huang, Y
	2013
发表期刊	CAHIERS DE BIOLOGIE MARINE
ISSN	0007-9723
卷号	54 期号:1 页码:1-10
文章类型	Article
摘要	Two new free-living marine nematode species of Cyatholaimidae, Marylynnia gracila sp. nov. and Paracanthonchus heterocaudatus sp. nov. from the Yellow Sea, China are described. Marylynnia gracila sp. nov. is characterized by slender body, long inner labial setae, absence of lateral differentiation, gubemaculum strongly cuticularized and distal half expanded with two curving teeth, six cup-shaped precloacal supplements. Paracanthonchus heterocaudatus sp. nov. is characterized by tail sexually dimorphic: male tail short (4.4 a.b.d.), conical, with short distal cylindrical portion, with lateral differentiation of the cuticle, two subventral rows of five setae at the anterior part of tail, and two ventral swelling each with a pair of short stout setae at the posterior part of tail; female tail long (7.1 a.b.d.) with longer distal cylindrical part, without caudal setae and lateral differentiation of the cuticle; spicules slender, slightly bent, cephalate proximally and tapering distally, gubernaculum arcuate, middle portion expanded and gradually narrowing with two curving teeth at distal end, six small tubular precloacal supplements in a 2+4 arrangement. The same time, the key to species of Marylynnia has been provided.; Two new free-living marine nematode species of Cyatholaimidae, Marylynnia gracila sp. nov. and Paracanthonchus heterocaudatus sp. nov. from the Yellow Sea, China are described. Marylynnia gracila sp. nov. is characterized by slender body, long inner labial setae, absence of lateral differentiation, gubemaculum strongly cuticularized and distal half expanded with two curving teeth, six cup-shaped precloacal supplements. Paracanthonchus heterocaudatus sp. nov. is characterized by tail sexually dimorphic: male tail short (4.4 a.b.d.), conical, with short distal cylindrical portion, with lateral differentiation of the cuticle, two subventral rows of five setae at the anterior part of tail, and two ventral swelling each with a pair of short stout setae at the posterior part of tail; female tail long (7.1 a.b.d.) with longer distal cylindrical part, without caudal setae and lateral differentiation of the cuticle; spicules slender, slightly bent, cephalate proximally and tapering distally, gubernaculum arcuate, middle portion expanded and gradually narrowing with two curving teeth at distal end, six small tubular precloacal supplements in a 2+4 arrangement. The same time, the key to species of Marylynnia has been provided.
关键词	Marylynnia Gracila Sp Nov. Paracanthonchus Heterocaudatus Sp Nov.
学科领域	Marine & Freshwater Biology
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:000314319700001
WOS关键词	MARINE NEMATODES ; CHROMADORIDA
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16352
专题	海洋生物分类与系统演化实验室
通讯作者	Huang, Y
作者单位	1.Liaocheng Univ, Coll Life Sci, Liaocheng 252059, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yong,Xu, Kuidong,Huang, Y. Two new free-living nematode species (Nematoda: Cyatholaimidae) from intertidal sediments of the Yellow Sea, China[J]. CAHIERS DE BIOLOGIE MARINE,2013,54(1):1-10.
APA	Huang, Yong,Xu, Kuidong,&Huang, Y.(2013).Two new free-living nematode species (Nematoda: Cyatholaimidae) from intertidal sediments of the Yellow Sea, China.CAHIERS DE BIOLOGIE MARINE,54(1),1-10.
MLA	Huang, Yong,et al."Two new free-living nematode species (Nematoda: Cyatholaimidae) from intertidal sediments of the Yellow Sea, China".CAHIERS DE BIOLOGIE MARINE 54.1(2013):1-10.

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