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Revision of Strombidium paracalkinsi (Ciliophora: Oligotrichea: Oligotrichia), with Comparison of Strombidiids Bearing Thigmotactic Membranelles
Author(s) -
Lee Eun Sun,
Kim YoungOk,
Agatha Sabine,
Jung JaeHo,
Xu Dapeng,
Shin Mann Kyoon
Publication year - 2014
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/jeu.12195
Subject(s) - biology , phylogenetic tree , genus , zoology , evolutionary biology , gene , genetics
This study analyses the morphological characters of Strombidium paracalkinsi , a species bearing thigmotactic membranelles, collected from Jangmok Bay at the southern coast of Korea. The small subunit ribosomal RNA gene of S. paracalkinsi was sequenced for the first time. By a combination of characters, the thigmotactic membranelles of S. paracalkinsi differ from the thigmotactic membranelles of other strombidiids. They are (1) positioned on dorsal side, (2) contiguous with three membranelles of the adoral zone, but separated by nonciliated portions of the polykinetids, and (3) composed of two rows of kinetids. Except for the thigmotactic membranelles, the morphology of S. paracalkinsi conforms to the diagnosis of the genus Strombidium . Our phylogenetic tree confirms the nonmonophyly of the genus Strombidium . The thigmotactic membranelles are a promising feature for a future split of the genus Strombidium , but require further studies, especially on Strombidium calkinsi Fauré‐Fremiet 1932.