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A new spirofilid ciliate from the yellow sea: Metastrongylidium distichum n gen, n sp (ciliophora, stichotrichia)
Xu, Kuidong; Lei, Yanli
2007
发表期刊ACTA PROTOZOOLOGICA
ISSN0065-1583
卷号46期号:2页码:121-129
文章类型Article
摘要The morphology and infraciliature of a new ciliate, Metastrongylidium distichum, isolated from the Yellow Sea, are investigated using live observation and protargol impregnation. Metastrongylidium distichum is about 170 x 40 pm in vivo, clavate to elongate ellipsoidal with bluntly pointed posterior end, and has two macronuclear nodules, six distinctly large buccal and frontal cirri, three dorsal kineties and two each of spiralled ventral and marginal cirral rows. These features indicate a generic allocation in Strongylidium Sterki, 1878. However, the new ciliate has a distinct feature not recognizable in Strongylidiurn, viz., the presence of (three or four) transverse cirri. Thus, we propose a new genus Metastrongylidium for the new species, M distichum nov. gen., n. sp. Metastrongylidium belongs to the family Spirofilidae, where it differs from Mucotrichidium by the lack of postperistomial cirrus and the different frontal and ventral cirral pattern. Metastrongylidium distichum is easily distinguishable from the seemingly similar species Strongylidium californicum Kahl, 1932 by the macronuclear pattern (invariably 2 vs. many nodules). It highly resembles the poorly known species S. contortum (Gelei 1954) Borror, 1972 in the body outline and nuclear pattern, differing in the biotope, the posterior cirral pattern, and the arrangement of right marginal row.; The morphology and infraciliature of a new ciliate, Metastrongylidium distichum, isolated from the Yellow Sea, are investigated using live observation and protargol impregnation. Metastrongylidium distichum is about 170 x 40 pm in vivo, clavate to elongate ellipsoidal with bluntly pointed posterior end, and has two macronuclear nodules, six distinctly large buccal and frontal cirri, three dorsal kineties and two each of spiralled ventral and marginal cirral rows. These features indicate a generic allocation in Strongylidium Sterki, 1878. However, the new ciliate has a distinct feature not recognizable in Strongylidiurn, viz., the presence of (three or four) transverse cirri. Thus, we propose a new genus Metastrongylidium for the new species, M distichum nov. gen., n. sp. Metastrongylidium belongs to the family Spirofilidae, where it differs from Mucotrichidium by the lack of postperistomial cirrus and the different frontal and ventral cirral pattern. Metastrongylidium distichum is easily distinguishable from the seemingly similar species Strongylidium californicum Kahl, 1932 by the macronuclear pattern (invariably 2 vs. many nodules). It highly resembles the poorly known species S. contortum (Gelei 1954) Borror, 1972 in the body outline and nuclear pattern, differing in the biotope, the posterior cirral pattern, and the arrangement of right marginal row.
关键词Marine Ciliate Metastrongylidium Distichum New Genus New Species Strongylidium Taxonomy
收录类别SCI
语种英语
WOS记录号WOS:000249249300005
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/6314
专题海洋生物分类与系统演化实验室
作者单位Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
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GB/T 7714
Xu, Kuidong,Lei, Yanli. A new spirofilid ciliate from the yellow sea: Metastrongylidium distichum n gen, n sp (ciliophora, stichotrichia)[J]. ACTA PROTOZOOLOGICA,2007,46(2):121-129.
APA Xu, Kuidong,&Lei, Yanli.(2007).A new spirofilid ciliate from the yellow sea: Metastrongylidium distichum n gen, n sp (ciliophora, stichotrichia).ACTA PROTOZOOLOGICA,46(2),121-129.
MLA Xu, Kuidong,et al."A new spirofilid ciliate from the yellow sea: Metastrongylidium distichum n gen, n sp (ciliophora, stichotrichia)".ACTA PROTOZOOLOGICA 46.2(2007):121-129.
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