Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species
Marine tardigrades in the Antarctic and sub-Antarctic regions are poorly understood. During the 59th Japan Antarctic Research Expedition, a sediment sample was collected from Lützow-Holm Bay, East Antarctica. The sediment sample yielded three species of marine tardigrades belonging to the family Sty...
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ftunivtasmania:oai:eprints.utas.edu.au:37421 2023-05-15T13:31:54+02:00 Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species Fujimoto, S Suzuki, AC Ito, M Tamura, T Tsujimoto, M 2020 https://eprints.utas.edu.au/37421/ unknown Springer-Verlag Fujimoto, S, Suzuki, AC, Ito, M, Tamura, T and Tsujimoto, M 2020 , 'Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species' , Polar Biology, vol. 43, no. 6 , pp. 679-693 , doi:10.1007/s00300-020-02671-w <http://dx.doi.org/10.1007/s00300-020-02671-w>. marine meiofauna molecular phylogenetics postembryonic development Styraconyx zoogeography Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.1007/s00300-020-02671-w 2021-09-27T22:16:31Z Marine tardigrades in the Antarctic and sub-Antarctic regions are poorly understood. During the 59th Japan Antarctic Research Expedition, a sediment sample was collected from Lützow-Holm Bay, East Antarctica. The sediment sample yielded three species of marine tardigrades belonging to the family Styraconyxidae Kristensen & Renaud-Mornant, 1983: Angursa antarctica Villora-Moreno, 1998, Styraconyx cf. qivitoq Kristensen & Higgins, 1984, and S. takeshii sp. nov. The new species resembles S. nanoqsunguak Kristensen & Higgins, 1984 by the overall morphology, but the new species has thick seminal receptacle ducts that do not terminate in typical, swelled vesicles, in contrast to S. nanoqsunguak’s narrow seminal receptacle ducts that terminate in small vesicles. The presence of the undivided mouth papilla and the larger body further differentiates the new species from S. nanoqsunguak. We also report a young adult female with a gonopore, but lacking seminal receptacles in the new species. As well as morphological information, we provided the sequences of the new species’ nuclear 28S rRNA and mitochondrial cytochrome c oxidase subunit I fragments. Using the former molecular data, phylogenetic analyses of Styraconyxidae were conducted and polyphyly of Styraconyx was suggested. The biogeography of marine tardigrades in the Antarctic and sub-Antarctic regions are also discussed. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Polar Biology University of Tasmania: UTas ePrints Antarctic East Antarctica Kristensen ENVELOPE(-159.667,-159.667,-86.333,-86.333) Lützow-Holm Bay ENVELOPE(38.000,38.000,-69.500,-69.500) Moreno ENVELOPE(-62.300,-62.300,-64.083,-64.083) Renaud ENVELOPE(-67.950,-67.950,-65.700,-65.700) The Antarctic Polar Biology 43 6 679 693 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
marine meiofauna molecular phylogenetics postembryonic development Styraconyx zoogeography |
spellingShingle |
marine meiofauna molecular phylogenetics postembryonic development Styraconyx zoogeography Fujimoto, S Suzuki, AC Ito, M Tamura, T Tsujimoto, M Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species |
topic_facet |
marine meiofauna molecular phylogenetics postembryonic development Styraconyx zoogeography |
description |
Marine tardigrades in the Antarctic and sub-Antarctic regions are poorly understood. During the 59th Japan Antarctic Research Expedition, a sediment sample was collected from Lützow-Holm Bay, East Antarctica. The sediment sample yielded three species of marine tardigrades belonging to the family Styraconyxidae Kristensen & Renaud-Mornant, 1983: Angursa antarctica Villora-Moreno, 1998, Styraconyx cf. qivitoq Kristensen & Higgins, 1984, and S. takeshii sp. nov. The new species resembles S. nanoqsunguak Kristensen & Higgins, 1984 by the overall morphology, but the new species has thick seminal receptacle ducts that do not terminate in typical, swelled vesicles, in contrast to S. nanoqsunguak’s narrow seminal receptacle ducts that terminate in small vesicles. The presence of the undivided mouth papilla and the larger body further differentiates the new species from S. nanoqsunguak. We also report a young adult female with a gonopore, but lacking seminal receptacles in the new species. As well as morphological information, we provided the sequences of the new species’ nuclear 28S rRNA and mitochondrial cytochrome c oxidase subunit I fragments. Using the former molecular data, phylogenetic analyses of Styraconyxidae were conducted and polyphyly of Styraconyx was suggested. The biogeography of marine tardigrades in the Antarctic and sub-Antarctic regions are also discussed. |
format |
Article in Journal/Newspaper |
author |
Fujimoto, S Suzuki, AC Ito, M Tamura, T Tsujimoto, M |
author_facet |
Fujimoto, S Suzuki, AC Ito, M Tamura, T Tsujimoto, M |
author_sort |
Fujimoto, S |
title |
Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species |
title_short |
Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species |
title_full |
Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species |
title_fullStr |
Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species |
title_full_unstemmed |
Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species |
title_sort |
marine tardigrades from lutzow-holm bay, east antarctica with the description of a new species |
publisher |
Springer-Verlag |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/37421/ |
long_lat |
ENVELOPE(-159.667,-159.667,-86.333,-86.333) ENVELOPE(38.000,38.000,-69.500,-69.500) ENVELOPE(-62.300,-62.300,-64.083,-64.083) ENVELOPE(-67.950,-67.950,-65.700,-65.700) |
geographic |
Antarctic East Antarctica Kristensen Lützow-Holm Bay Moreno Renaud The Antarctic |
geographic_facet |
Antarctic East Antarctica Kristensen Lützow-Holm Bay Moreno Renaud The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Polar Biology |
op_relation |
Fujimoto, S, Suzuki, AC, Ito, M, Tamura, T and Tsujimoto, M 2020 , 'Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species' , Polar Biology, vol. 43, no. 6 , pp. 679-693 , doi:10.1007/s00300-020-02671-w <http://dx.doi.org/10.1007/s00300-020-02671-w>. |
op_doi |
https://doi.org/10.1007/s00300-020-02671-w |
container_title |
Polar Biology |
container_volume |
43 |
container_issue |
6 |
container_start_page |
679 |
op_container_end_page |
693 |
_version_ |
1766022172916056064 |