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Paroctonchus nanjiensis gen. nov., sp nov (Nematoda, Enoplida, Oncholaimidae) from intertidal sediments in the East China Sea
Shi, Benze1,2; Xu, Kuidong1,3
2016-06-16
Source PublicationZOOTAXA
Volume4126Issue:1Pages:97-106
SubtypeArticle
AbstractParoctonchus nanjiensis gen. nov., sp. nov. is described from a sand beach in the China Nanji Islands Natural Reserve in the East China Sea. Paroctonchus nanjiensis is distinct in the family Oncholaimidae in having more than three teeth, a character found otherwise only in the monotypic genera Octonchus and Patagonema. The new genus and species differs from Octonchus and Patagonema in the number and pattern of teeth, bearing three large teeth with the left ventrosublateral one the largest plus about 27 small teeth distributed on the wall of buccal cavity. By contrast, Octonchus possesses one large tooth plus eight small teeth, while Patagonema has three large teeth with the right ventrosublateral one the largest plus 12 small teeth on three mandibular ridges. Moreover, Paroctonchus nanjiensis differs from Octonchus also in position of the amphidial aperture (located in the middle portion of buccal cavity vs. at the base of buccal cavity), and from Patagonema in the absence of a demanian system (vs. present) and the presence of two subventral rows of wart-like precloacal supplements (vs. a ventral row of papillate supplements). We provide an improved diagnosis for the subfamily Octonchinae, and discuss the evolution of teeth in the family Oncholaimidae.
KeywordMarine Nematode New Genus New Species Octonchinae Sandy Sediment Taxonomy
DOI10.11646/zootaxa.4126.1.4
Indexed BySCI
Language英语
WOS IDWOS:000377762200004
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/130989
Collection海洋生物分类与系统演化实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi, Benze,Xu, Kuidong. Paroctonchus nanjiensis gen. nov., sp nov (Nematoda, Enoplida, Oncholaimidae) from intertidal sediments in the East China Sea[J]. ZOOTAXA,2016,4126(1):97-106.
APA Shi, Benze,&Xu, Kuidong.(2016).Paroctonchus nanjiensis gen. nov., sp nov (Nematoda, Enoplida, Oncholaimidae) from intertidal sediments in the East China Sea.ZOOTAXA,4126(1),97-106.
MLA Shi, Benze,et al."Paroctonchus nanjiensis gen. nov., sp nov (Nematoda, Enoplida, Oncholaimidae) from intertidal sediments in the East China Sea".ZOOTAXA 4126.1(2016):97-106.
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