Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships
The underestimation of biodiversity and scarce knowledge of the biogeographic distributions of terrestrial meiofaunal component limit our understanding of the origin of Antarctic fauna. One of its main components is tardigrades; nonetheless studies on tardigrade diversity are still few in the contin...
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2019
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ftdatacite:10.6084/m9.figshare.9804662 2023-05-15T14:02:14+02:00 Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships Guidetti, Roberto Massa, Edoardo Bertolani, Roberto Rebecchi, Lorena Cesari, Michele 2019 https://dx.doi.org/10.6084/m9.figshare.9804662 https://tandf.figshare.com/articles/Increasing_knowledge_of_Antarctic_biodiversity_new_endemic_taxa_of_tardigrades_Eutardigrada_Ramazzottiidae_and_their_evolutionary_relationships/9804662 unknown Taylor & Francis https://dx.doi.org/10.1080/14772000.2019.1649737 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Evolutionary Biology FOS Biological sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology 110309 Infectious Diseases FOS Health sciences 60506 Virology Computational Biology dataset Dataset 2019 ftdatacite https://doi.org/10.6084/m9.figshare.9804662 https://doi.org/10.1080/14772000.2019.1649737 2021-11-05T12:55:41Z The underestimation of biodiversity and scarce knowledge of the biogeographic distributions of terrestrial meiofaunal component limit our understanding of the origin of Antarctic fauna. One of its main components is tardigrades; nonetheless studies on tardigrade diversity are still few in the continental Antarctic area. In order to increase our knowledge of the underreported terrestrial meiofaunal communities within continental Antarctica, as well as to provide new information for biogeographic and evolutionary analysis of these communities, the tardigrade diversity of 11 samples collected along the coast of Victoria Land was considered. The application of an integrative approach in which morphological (Light – LM, scanning electron – SEM, and confocal laser scanning microscopy – CSLM) and molecular analysis (18S, 28S, cox1 genes) were combined allowed us to characterize the tardigrade fauna inhabiting mosses, lichens, and cyanobacterial mats of Victoria Land. These analyses allowed the detection of two tardigrade species new to science ( Cryoconicus antiarktos sp. nov., Ramazzottius sabatiniae sp. nov.), and the emendation of known species (( Hebesuncus ryani Dastych and Harris, 1994, Ramazzottius nivalis Dastych, 2006, Cryoconicus ljudmilae comb. nov. (Biserov, 1997/98), and Cryoconicus cataphractus (Maucci, 1974)), together with the genus Cryoconicus . The Ramazzottius type of claws was redefined identifying three subtypes. Also, we investigated the phylogenetic position of some problematic/unresolved lineages all belonging to the family Ramazzottiidae. These data increased the knowledge of the biodiversity in Victoria Land, the number of endemic tardigrades in Antarctica, and provided evidence on the origin of Antarctic endemism. Lastly, new methods for integrative taxonomic studies on tardigrades were presented and discussed. Dataset Antarc* Antarctic Antarctica Victoria Land Tardigrade DataCite Metadata Store (German National Library of Science and Technology) Antarctic Victoria Land |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Evolutionary Biology FOS Biological sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology 110309 Infectious Diseases FOS Health sciences 60506 Virology Computational Biology |
spellingShingle |
Evolutionary Biology FOS Biological sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology 110309 Infectious Diseases FOS Health sciences 60506 Virology Computational Biology Guidetti, Roberto Massa, Edoardo Bertolani, Roberto Rebecchi, Lorena Cesari, Michele Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
topic_facet |
Evolutionary Biology FOS Biological sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology 110309 Infectious Diseases FOS Health sciences 60506 Virology Computational Biology |
description |
The underestimation of biodiversity and scarce knowledge of the biogeographic distributions of terrestrial meiofaunal component limit our understanding of the origin of Antarctic fauna. One of its main components is tardigrades; nonetheless studies on tardigrade diversity are still few in the continental Antarctic area. In order to increase our knowledge of the underreported terrestrial meiofaunal communities within continental Antarctica, as well as to provide new information for biogeographic and evolutionary analysis of these communities, the tardigrade diversity of 11 samples collected along the coast of Victoria Land was considered. The application of an integrative approach in which morphological (Light – LM, scanning electron – SEM, and confocal laser scanning microscopy – CSLM) and molecular analysis (18S, 28S, cox1 genes) were combined allowed us to characterize the tardigrade fauna inhabiting mosses, lichens, and cyanobacterial mats of Victoria Land. These analyses allowed the detection of two tardigrade species new to science ( Cryoconicus antiarktos sp. nov., Ramazzottius sabatiniae sp. nov.), and the emendation of known species (( Hebesuncus ryani Dastych and Harris, 1994, Ramazzottius nivalis Dastych, 2006, Cryoconicus ljudmilae comb. nov. (Biserov, 1997/98), and Cryoconicus cataphractus (Maucci, 1974)), together with the genus Cryoconicus . The Ramazzottius type of claws was redefined identifying three subtypes. Also, we investigated the phylogenetic position of some problematic/unresolved lineages all belonging to the family Ramazzottiidae. These data increased the knowledge of the biodiversity in Victoria Land, the number of endemic tardigrades in Antarctica, and provided evidence on the origin of Antarctic endemism. Lastly, new methods for integrative taxonomic studies on tardigrades were presented and discussed. |
format |
Dataset |
author |
Guidetti, Roberto Massa, Edoardo Bertolani, Roberto Rebecchi, Lorena Cesari, Michele |
author_facet |
Guidetti, Roberto Massa, Edoardo Bertolani, Roberto Rebecchi, Lorena Cesari, Michele |
author_sort |
Guidetti, Roberto |
title |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_short |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_full |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_fullStr |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_full_unstemmed |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_sort |
increasing knowledge of antarctic biodiversity: new endemic taxa of tardigrades (eutardigrada; ramazzottiidae) and their evolutionary relationships |
publisher |
Taylor & Francis |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.9804662 https://tandf.figshare.com/articles/Increasing_knowledge_of_Antarctic_biodiversity_new_endemic_taxa_of_tardigrades_Eutardigrada_Ramazzottiidae_and_their_evolutionary_relationships/9804662 |
geographic |
Antarctic Victoria Land |
geographic_facet |
Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica Victoria Land Tardigrade |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land Tardigrade |
op_relation |
https://dx.doi.org/10.1080/14772000.2019.1649737 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.9804662 https://doi.org/10.1080/14772000.2019.1649737 |
_version_ |
1766272391387807744 |