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Morphology, morphogenesis, and molecular phylogeny of a new freshwater ciliate, Gonostomum jangbogoensis n. sp. (Ciliophora, Hypotricha), from Victoria Land, Antarctica

Cited 10 time in wos
Cited 12 time in scopus
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Title
Morphology, morphogenesis, and molecular phylogeny of a new freshwater ciliate, Gonostomum jangbogoensis n. sp. (Ciliophora, Hypotricha), from Victoria Land, Antarctica
Other Titles
빅토리아 랜드에서 발견한 신종 섬모충류 Gonostomum jangbogoensis n. sp.의 형태, 발생, 분자계통학적 연구
Authors
Park, Kyung-Min
Jung, Jae-Ho
Kim, Jeong-Hoon
Min, Gi-Sik
Kim, Sanghee
Subject
Microbiology
Keywords
Ciliophora; Gonostomatidae; Ontogenesis; SSU rRNA gene; Taxonomy
Issue Date
2020-04
Citation
Park, Kyung-Min, et al. 2020. "Morphology, morphogenesis, and molecular phylogeny of a new freshwater ciliate, Gonostomum jangbogoensis n. sp. (Ciliophora, Hypotricha), from Victoria Land, Antarctica". EUROPEAN JOURNAL OF PROTISTOLOGY, 73(1): 125669-125679.
Abstract
In a study on ciliate diversity, we discovered the new hypotrich species, Gonostomum jangbogoensis n. sp., in freshwater from Terra Nova Bay, Victoria Land, southeast Antarctica. We describe its morphology and morphogenesis using standard methods, and the SSU rRNA gene phylogeny is provided as well. Morphology of Gonostomum jangbogoensis n. sp. is characterized as follows: slender to elongated body shape; grayish under low magnification; cortical granules present; 32 - 1 adoral membranelles; 3 enlarged frontal cirri; 1 buccal cirrus; 2 frontoterminal cirri; 3 or 4 frontovemral cirral pairs, 2 pretransverse cirri, 6-7 transverse cirri; 13-19 left and 18-26 right marginal cirri; 17-23 paroral kinetids; 3 dorsal kinetics; 3 caudal cirri; 2 macronuclear nodules with 1-3 micronuclei. The morphogenesis of the new species confirms that it has at least seven frontal-ventral-transverse cirral anlagen, which is also reported in Gonostomum sp. 1 sensu Shin from Korea. Even though these two populations occur very far from each other, the morphometric data prove that this character state, the seven cirral anlagen, is a stable feature across these populations and might be an apomorphy. The phylogenetic analyses show that the genus Gonostonvini is non-monophyletic and that the new species is a sister to G. bromelicola.
URI
https://repository.kopri.re.kr/handle/201206/12049
DOI
http://dx.doi.org/10.1016/j.ejop.2019.125669
Appears in Collections  
2019-2019, The Jang Bogo Long-term Ecological Research (JBG-LTER) - Korea·New Zealand·Italy Joint platform construction (19-19) / Choi, Han-Gu (PE19150)
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