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Redescription of Keronopsis helluo Penard, 1922 from Antarctica and Paraholosticha pannonica Gellert and Tamas, 1959 from Alaska (Ciliophora, Hypotricha)

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Title
Redescription of Keronopsis helluo Penard, 1922 from Antarctica and Paraholosticha pannonica Gellert and Tamas, 1959 from Alaska (Ciliophora, Hypotricha)
Other Titles
남극에서 발견된 Keronopsis helluo와 북극에서 발견된 Paraholosticha pannonica에 대한 재기재 논문
Authors
Park, Kyung-Min
Helmut Berger
Kim, Sanghee
Min, Gi-Sik
Jung, Jae-Ho
Chae, Nam Yi
Subject
Microbiology
Keywords
Keronopsidae; Morphology; Moss; Robert Island; SSU rRNA gene; Soil ciliate
Issue Date
2017
Citation
Park, Kyung-Min, et al. 2017. "Redescription of Keronopsis helluo Penard, 1922 from Antarctica and Paraholosticha pannonica Gellert and Tamas, 1959 from Alaska (Ciliophora, Hypotricha)". EUROPEAN JOURNAL OF PROTISTOLOGY, 60(0): 102-118.
Abstract
The morphology of Keronopsis helluo Penard, 1922, type species of Keronopsis, and Paraholosticha pannonica Gellertand Tamas, 1959, two little-known members of the Keronopsidae Jankowski, 1979, was described using standard methods. Inaddition, we sequenced the SSU rRNA of both species. Keronopsis helluo was isolated from a mossy soil from Robert Island(Antarctica) while P. pannonica was found in terrestrial moss from Alaska. Our data correspond very well with the originaldescriptions. The frontal ciliature of K. helluo is identical with that of Paraholosticha spp., indicating that some Keronopsisspecies (K. tasmaniensis, K. dieckmanni) are misclassified in the keronopsids. The type species has distinctly more transversecirri (8?13) than K. wetzeli (1?3), type species of Parakeronopsis, which is thus perhaps a valid genus or subgenus. Thephylogenetic analyses confirm the position of the keronopsids outside the Dorsomarginalia. The species sequenced so far (K.helluo, Paraholosticha muscicola, P. pannonica) emerge from a soft polytomy, which also comprises Bistichella-like speciesand a large cluster composed of amphisiellids, trachelostylids, and gonostomatids, that is, the method failed to resolve therelationships within the keronopsids. The Keronopsidae and the two species studied are characterized based on previous studiesand our data.
URI
http://repository.kopri.re.kr/handle/201206/6252
DOI
http://dx.doi.org/10.1016/j.ejop.2017.04.008
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