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Title: Phylogenetic Position of the Genus Cyrtostrombidium, with a Description of Cyrtostrombidium paralongisomum nov. spec. and a Redescription of Cyrtostrombidium longisomum Lynn & Gilron
Authors: Kuo-Ping Chiang
Sheng-Fang Tsai
Wei-Ting Chen
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: taxonomy
Ciliary pattern
Date: 2014-10
Issue Date: 2017-02-10T07:28:41Z
Publisher: You have full text access to this content Journal of Eukaryotic Microbiology
Abstract: Abstract: We redescribe Cyrtostrombidium longisomum Lynn & Gilron, 1993, the type species of the genus Cyrtostrombidium, and describe the new species Cyrtostrombidium paralongisomum n. sp. using live observation, protargol staining and molecular data. The morphological characters of these two species are clearly distinct, i.e., dikinetid numbers in the girdle and ventral kineties; however, it is difficult to separate them by 18S rDNA sequences because they differ by only 8 bp, indicating that 18S rDNA sequences are insufficient for separating different species in the genus Cyrtostrombidium. We not only observed the position of the oral primordium in the genus Cyrtostrombidium but also observed a possibly homoplasious trait, a dorsal split in the girdle kinety, in (1) Apostrombidium, (2) Varistrombidium, and (3) Cyrtostrombidium/Williophrya. This partially supports the hypothesis of somatic ciliary pattern evolution recently put forth by Agatha and Strüder-Kypke.
Relation: 62(2)
Appears in Collections:[Institute of Marine Environment and Ecology] Periodical Articles

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