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Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology

Tardigrades constitute one of the most important group in the challenging Antarctic terrestrial ecosystem. Living in various habitats, tardigrades play major roles as consumers and decomposers in the trophic networks of Antarctic terrestrial and freshwater environments; yet we still know little abou...

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Autores principales: Kihm, Ji-Hoon, Kim, Sanghee, McInnes, Sandra J., Zawierucha, Krzysztof, Rho, Hyun Soo, Kang, Pilmo, Park, Tae-Yoon S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7272612/
https://www.ncbi.nlm.nih.gov/pubmed/32499591
http://dx.doi.org/10.1038/s41598-020-65573-1
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author Kihm, Ji-Hoon
Kim, Sanghee
McInnes, Sandra J.
Zawierucha, Krzysztof
Rho, Hyun Soo
Kang, Pilmo
Park, Tae-Yoon S.
author_facet Kihm, Ji-Hoon
Kim, Sanghee
McInnes, Sandra J.
Zawierucha, Krzysztof
Rho, Hyun Soo
Kang, Pilmo
Park, Tae-Yoon S.
author_sort Kihm, Ji-Hoon
collection PubMed
description Tardigrades constitute one of the most important group in the challenging Antarctic terrestrial ecosystem. Living in various habitats, tardigrades play major roles as consumers and decomposers in the trophic networks of Antarctic terrestrial and freshwater environments; yet we still know little about their biodiversity. The Eutardigrada is a species rich class, for which the eggshell morphology is one of the key morphological characters. Tardigrade egg morphology shows a diverse appearance, and it is known that, despite rare, intraspecific variation is caused by seasonality, epigenetics, and external environmental conditions. Here we report Dactylobiotus ovimutans sp. nov. from King George Island, Antarctica. Interestingly, we observed a range of eggshell morphologies from the new species, although the population was cultured under controlled laboratory condition. Thus, seasonality, environmental conditions, and food source are eliminated, leaving an epigenetic factor as a main cause for variability in this case.
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spelling pubmed-72726122020-06-05 Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology Kihm, Ji-Hoon Kim, Sanghee McInnes, Sandra J. Zawierucha, Krzysztof Rho, Hyun Soo Kang, Pilmo Park, Tae-Yoon S. Sci Rep Article Tardigrades constitute one of the most important group in the challenging Antarctic terrestrial ecosystem. Living in various habitats, tardigrades play major roles as consumers and decomposers in the trophic networks of Antarctic terrestrial and freshwater environments; yet we still know little about their biodiversity. The Eutardigrada is a species rich class, for which the eggshell morphology is one of the key morphological characters. Tardigrade egg morphology shows a diverse appearance, and it is known that, despite rare, intraspecific variation is caused by seasonality, epigenetics, and external environmental conditions. Here we report Dactylobiotus ovimutans sp. nov. from King George Island, Antarctica. Interestingly, we observed a range of eggshell morphologies from the new species, although the population was cultured under controlled laboratory condition. Thus, seasonality, environmental conditions, and food source are eliminated, leaving an epigenetic factor as a main cause for variability in this case. Nature Publishing Group UK 2020-06-04 /pmc/articles/PMC7272612/ /pubmed/32499591 http://dx.doi.org/10.1038/s41598-020-65573-1 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kihm, Ji-Hoon
Kim, Sanghee
McInnes, Sandra J.
Zawierucha, Krzysztof
Rho, Hyun Soo
Kang, Pilmo
Park, Tae-Yoon S.
Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology
title Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology
title_full Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology
title_fullStr Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology
title_full_unstemmed Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology
title_short Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology
title_sort integrative description of a new dactylobiotus (eutardigrada: parachela) from antarctica that reveals an intraspecific variation in tardigrade egg morphology
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7272612/
https://www.ncbi.nlm.nih.gov/pubmed/32499591
http://dx.doi.org/10.1038/s41598-020-65573-1
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