Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen.
In the present study, based on both morphologic and phylogenetic analyses, a new genus, Monourostylopsis n. gen., and new species, Metaurostylopsis alrasheidi n. sp. as well as a new combination, Monourostylopsis antarctica (Jung et al., 2011) n. comb. (original combination: Metaurostylopsis antarct...
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ftdoajarticles:oai:doaj.org/article:33764e16afa6481ea148d60e0cd99f37 2023-05-15T13:44:15+02:00 Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. Wenya Song Yu Qiao Jingyi Dong William A. Bourland Tengteng Zhang Xiaotian Luo 2020-11-01T00:00:00Z https://doi.org/10.3389/fmars.2020.602317 https://doaj.org/article/33764e16afa6481ea148d60e0cd99f37 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2020.602317/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.602317 https://doaj.org/article/33764e16afa6481ea148d60e0cd99f37 Frontiers in Marine Science, Vol 7 (2020) Metaurostylopsis Monourostylopsis n. gen ontogenesis 18S rRNA gene systematics taxonomy Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.602317 2022-12-31T07:50:24Z In the present study, based on both morphologic and phylogenetic analyses, a new genus, Monourostylopsis n. gen., and new species, Metaurostylopsis alrasheidi n. sp. as well as a new combination, Monourostylopsis antarctica (Jung et al., 2011) n. comb. (original combination: Metaurostylopsis antarcticaJung et al., 2011), are suggested. The new genus is diagnosed mainly by having three or more frontoterminal cirri, a midventral complex with midventral pairs and a single midventral row, one right marginal row and two or more left marginal rows. The new genus can be easily separated from the morphologically similar genera mainly by having single right marginal row (vs. two or more right marginal rows). Based on live observation and protargol staining, the morphology and morphogenesis of a new species, M. alrasheidi n. sp. isolated from China, were investigated. The new species can be characterized by: two types of cortical granules; about 22 adoral membranelles; three or four frontoterminal, four or five transverse cirri; about eight midventral pairs and a midventral row of three or four unpaired midventral cirri; three or four left and right marginal rows. The main morphogenetic features of Metaurostylopsis alrasheidi n. sp. can be summarized as: (1) the entire parental ciliature, including the oral apparatus, is renewed; (2) the oral primordium of the proter probably originates within a pouch; (3) the oral primordium of the opisthe forms de novo on the cell surface; (4) the anlagen of marginal rows and dorsal kineties are formed intrakinetally, and (5) the fusion of macronuclear nodules results in an irregular branched mass prior to karyokinesis. In the phylogenetic trees, all the available Metaurostylopsis sequences cluster together in a clade with full support (ML/BI: 100/1.00) revealing that the genus is monophyletic within the large group of core urostylids. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Metaurostylopsis Monourostylopsis n. gen ontogenesis 18S rRNA gene systematics taxonomy Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Metaurostylopsis Monourostylopsis n. gen ontogenesis 18S rRNA gene systematics taxonomy Science Q General. Including nature conservation geographical distribution QH1-199.5 Wenya Song Yu Qiao Jingyi Dong William A. Bourland Tengteng Zhang Xiaotian Luo Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. |
topic_facet |
Metaurostylopsis Monourostylopsis n. gen ontogenesis 18S rRNA gene systematics taxonomy Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
In the present study, based on both morphologic and phylogenetic analyses, a new genus, Monourostylopsis n. gen., and new species, Metaurostylopsis alrasheidi n. sp. as well as a new combination, Monourostylopsis antarctica (Jung et al., 2011) n. comb. (original combination: Metaurostylopsis antarcticaJung et al., 2011), are suggested. The new genus is diagnosed mainly by having three or more frontoterminal cirri, a midventral complex with midventral pairs and a single midventral row, one right marginal row and two or more left marginal rows. The new genus can be easily separated from the morphologically similar genera mainly by having single right marginal row (vs. two or more right marginal rows). Based on live observation and protargol staining, the morphology and morphogenesis of a new species, M. alrasheidi n. sp. isolated from China, were investigated. The new species can be characterized by: two types of cortical granules; about 22 adoral membranelles; three or four frontoterminal, four or five transverse cirri; about eight midventral pairs and a midventral row of three or four unpaired midventral cirri; three or four left and right marginal rows. The main morphogenetic features of Metaurostylopsis alrasheidi n. sp. can be summarized as: (1) the entire parental ciliature, including the oral apparatus, is renewed; (2) the oral primordium of the proter probably originates within a pouch; (3) the oral primordium of the opisthe forms de novo on the cell surface; (4) the anlagen of marginal rows and dorsal kineties are formed intrakinetally, and (5) the fusion of macronuclear nodules results in an irregular branched mass prior to karyokinesis. In the phylogenetic trees, all the available Metaurostylopsis sequences cluster together in a clade with full support (ML/BI: 100/1.00) revealing that the genus is monophyletic within the large group of core urostylids. |
format |
Article in Journal/Newspaper |
author |
Wenya Song Yu Qiao Jingyi Dong William A. Bourland Tengteng Zhang Xiaotian Luo |
author_facet |
Wenya Song Yu Qiao Jingyi Dong William A. Bourland Tengteng Zhang Xiaotian Luo |
author_sort |
Wenya Song |
title |
Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. |
title_short |
Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. |
title_full |
Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. |
title_fullStr |
Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. |
title_full_unstemmed |
Ontogeny and Phylogeny of a New Hypotrichous Ciliate (Protista, Ciliophora), Metaurostylopsis alrasheidi n. sp., With Establishment of a New Genus Monourostylopsis n. gen. |
title_sort |
ontogeny and phylogeny of a new hypotrichous ciliate (protista, ciliophora), metaurostylopsis alrasheidi n. sp., with establishment of a new genus monourostylopsis n. gen. |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.602317 https://doaj.org/article/33764e16afa6481ea148d60e0cd99f37 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2020.602317/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.602317 https://doaj.org/article/33764e16afa6481ea148d60e0cd99f37 |
op_doi |
https://doi.org/10.3389/fmars.2020.602317 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766199442540593152 |