Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach
Gastrotricha is a cosmopolitan phylum of aquatic and semi-terrestrial invertebrates that comprises ∼820 described species. To date, freshwater gastrotrichs have not been the subject of faunistic or taxonomic research in the polar regions. In this paper, we present the first species-level description...
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ftbioone:10.1071/IS16001 2024-06-02T08:01:36+00:00 Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach Małgorzata Kolicka Miroslawa Dabert Jacek Dabert Tobias Kånneby Jacek Kisielewski Małgorzata Kolicka Miroslawa Dabert Jacek Dabert Tobias Kånneby Jacek Kisielewski world 2016-08-31 text/HTML https://doi.org/10.1071/IS16001 en eng CSIRO Publishing doi:10.1071/IS16001 All rights reserved. https://doi.org/10.1071/IS16001 Text 2016 ftbioone https://doi.org/10.1071/IS16001 2024-05-07T00:49:46Z Gastrotricha is a cosmopolitan phylum of aquatic and semi-terrestrial invertebrates that comprises ∼820 described species. To date, freshwater gastrotrichs have not been the subject of faunistic or taxonomic research in the polar regions. In this paper, we present the first species-level description of a freshwater gastrotrich from the Arctic (Svalbard Archipelago). Evidence from morphology, morphometry and molecular analyses reveals that the species represents a new genus in Chaetonotidae: Bifidochaetus arcticus, gen. et sp. nov. Taking into consideration many morphological similarities to Chaetonotus (Primochaetus) veronicae Kånneby, 2013 we propose to include C. (P.) veronicae in the newly established genus under the new combination Bifidochaetus veronicae (Kånneby, 2013), comb. nov. In the phylogenetic analysis based on nuclear 18S rRNA, 28S rRNA and mitochondrial cytochrome c oxidase subunit I sequence data, B. arcticus, gen. et sp. nov. is nested within the family Chaetonotidae, as the sister group to the genus Lepidochaetus Kisielewski, 1991. In this paper we also present new taxonomic characters useful for gastrotrich taxonomy: the pharynx-to-intestine length ratio (I) and the spine bifurcation ratio (B). Text Arctic Svalbard Spitsbergen BioOne Online Journals Arctic Svalbard Svalbard Archipelago Invertebrate Systematics 30 4 398 |
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description |
Gastrotricha is a cosmopolitan phylum of aquatic and semi-terrestrial invertebrates that comprises ∼820 described species. To date, freshwater gastrotrichs have not been the subject of faunistic or taxonomic research in the polar regions. In this paper, we present the first species-level description of a freshwater gastrotrich from the Arctic (Svalbard Archipelago). Evidence from morphology, morphometry and molecular analyses reveals that the species represents a new genus in Chaetonotidae: Bifidochaetus arcticus, gen. et sp. nov. Taking into consideration many morphological similarities to Chaetonotus (Primochaetus) veronicae Kånneby, 2013 we propose to include C. (P.) veronicae in the newly established genus under the new combination Bifidochaetus veronicae (Kånneby, 2013), comb. nov. In the phylogenetic analysis based on nuclear 18S rRNA, 28S rRNA and mitochondrial cytochrome c oxidase subunit I sequence data, B. arcticus, gen. et sp. nov. is nested within the family Chaetonotidae, as the sister group to the genus Lepidochaetus Kisielewski, 1991. In this paper we also present new taxonomic characters useful for gastrotrich taxonomy: the pharynx-to-intestine length ratio (I) and the spine bifurcation ratio (B). |
author2 |
Małgorzata Kolicka Miroslawa Dabert Jacek Dabert Tobias Kånneby Jacek Kisielewski |
format |
Text |
author |
Małgorzata Kolicka Miroslawa Dabert Jacek Dabert Tobias Kånneby Jacek Kisielewski |
spellingShingle |
Małgorzata Kolicka Miroslawa Dabert Jacek Dabert Tobias Kånneby Jacek Kisielewski Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach |
author_facet |
Małgorzata Kolicka Miroslawa Dabert Jacek Dabert Tobias Kånneby Jacek Kisielewski |
author_sort |
Małgorzata Kolicka |
title |
Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach |
title_short |
Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach |
title_full |
Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach |
title_fullStr |
Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach |
title_full_unstemmed |
Bifidochaetus, a new Arctic genus of freshwater Chaetonotida (Gastrotricha) from Spitsbergen revealed by an integrative taxonomic approach |
title_sort |
bifidochaetus, a new arctic genus of freshwater chaetonotida (gastrotricha) from spitsbergen revealed by an integrative taxonomic approach |
publisher |
CSIRO Publishing |
publishDate |
2016 |
url |
https://doi.org/10.1071/IS16001 |
op_coverage |
world |
geographic |
Arctic Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Svalbard Svalbard Archipelago |
genre |
Arctic Svalbard Spitsbergen |
genre_facet |
Arctic Svalbard Spitsbergen |
op_source |
https://doi.org/10.1071/IS16001 |
op_relation |
doi:10.1071/IS16001 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1071/IS16001 |
container_title |
Invertebrate Systematics |
container_volume |
30 |
container_issue |
4 |
container_start_page |
398 |
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1800746003894108160 |