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New record of three hypotrich soil ciliates(Ciliophora: Hypotricha) from South Korea: Oxytricha multilineata, Mixophrya pantanalensis pantanalensis and Caudiurostyla sinensis

Journal of Species Research / Journal of Species Research, (E)2713-8615
2023, v.12 no.4, pp.307-312
https://doi.org/10.12651/JSR.2023.12.4.307
Kyu-Seok Chae (Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea)
GISIK MIN
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Abstract

Oxytricha multilineata, Mixophrya pantanalensis pantanalensis, and Caudiurostyla sinensis were isolated from soil samples collected from Cheongju-si and Yeoju-si, confirmed as new to South Korea. Oxytricha multilineata was distinguished from other congeners by seven dorsal kineties and dorsal bristles about 15 μm long. Mixophrya pantanalensis pantanalensis was characterized by five to seven lithosomes and six dorsal kineties. Caudiurostyla sinensis was characterized by colorless cortical granules present, 10-14 midventral pairs, 7-9 left and 6-9 right marginal rows and four or five dorsal kineties. We determined the ribosomal DNA sequences (including 18S rDNA, ITS1, 5.8S rDNA, ITS2, and partial 28S rDNA) from above three species. And the genetic distances were compared with their congeners.

keywords
18S rDNA gene, Hemicycliostylidae, Oxytrichidae, protargol staining, terrestrial habitat

Journal of Species Research