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Two new rapacious nematodes from intertidal sediments, Gammanema magnum sp nov and Synonchium caudatubatum sp nov (Nematoda, Selachinematidae)
Shi, Benze1; Xu, Kuidong1,2,3
2018-02-20
Source PublicationEUROPEAN JOURNAL OF TAXONOMY
ISSN2118-9773
Volume405Pages:1-17
Corresponding AuthorXu, Kuidong(kxu@qdio.ac.cn)
AbstractTwo new species of the family Selachinematidae Cobb, 1915 from an intertidal sandy flat in the East China Sea are described. Both species are distinct rapacious nematodes, preying on other nematodes. Gammanema magnum sp. nov. is characterized by its leaf-like labial setae, large loop-shaped amphideal fovea in the male and small spiral ones in the female, an anterior buccal cavity reinforced by 12 rhabdia, each rhabdion with about six denticles, and two unequally long spicules. Gammanema magnum sp. nov. is a striking species, exhibiting extreme sexual dimorphism in the amphideal fovea, but lacking a gubernaculum or precloacal supplements, all features by which it can be differentiated from congeneric species. Synonchium caudatubatum sp. nov. is characterized by a posterior buccal cavity, with three mandibles each with a large tooth flanked by three smaller teeth on both sides, a transverse oval-shaped multispiral amphideal fovea, and a bluntly rounded tail with a protuberant caudal duct. Synonchium caudatubatum sp. nov. is unique in the genus in having a protuberant caudal duct in the tail end. Furthermore, it differs from its congeners by its mandibles, which have seven teeth each. Synonchium caudatubatum sp. nov. lacks a gubernaculum and a precloacal supplement, both features present in congeners except S. depressum Gerlach, 1954.
KeywordEast China Sea marine nematode morphology new species sandy sediment
DOI10.5852/ejt.2018.405
Indexed BySCI
Language英语
Funding ProjectChina Postdoctoral Science Foundation[2016M602201] ; Community Structure of the Meiofauna and Evaluation on the Marine Environment in the Nanji Islands under official construction of the Nanji Islands National Marine Natural Reserve of the State Oceanic Administration of China[NJKJ2016-004] ; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology
WOS Research AreaZoology
WOS SubjectZoology
WOS IDWOS:000425731400001
PublisherMUSEUM NATL HISTOIRE NATURELLE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/158033
Collection中国科学院海洋研究所
Corresponding AuthorXu, Kuidong
Affiliation1.Chinese Acad Sci, Inst Oceanol, Dept Marine Organism Taxon & Phylogeny, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi, Benze,Xu, Kuidong. Two new rapacious nematodes from intertidal sediments, Gammanema magnum sp nov and Synonchium caudatubatum sp nov (Nematoda, Selachinematidae)[J]. EUROPEAN JOURNAL OF TAXONOMY,2018,405:1-17.
APA Shi, Benze,&Xu, Kuidong.(2018).Two new rapacious nematodes from intertidal sediments, Gammanema magnum sp nov and Synonchium caudatubatum sp nov (Nematoda, Selachinematidae).EUROPEAN JOURNAL OF TAXONOMY,405,1-17.
MLA Shi, Benze,et al."Two new rapacious nematodes from intertidal sediments, Gammanema magnum sp nov and Synonchium caudatubatum sp nov (Nematoda, Selachinematidae)".EUROPEAN JOURNAL OF TAXONOMY 405(2018):1-17.
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