Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae)
Abstract Numerous evolutionary lineages representing an armoured, limno-terrestrial family Echiniscidae are restricted to high mountainous or polar localities, exhibiting clear cold stenothermic preferences. One such group is the genus Claxtonia, with its type species Claxtonia wendti, originally de...
Published in: | Zoological Journal of the Linnean Society |
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Oxford University Press (OUP)
2023
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Online Access: | http://dx.doi.org/10.1093/zoolinnean/zlad029 https://academic.oup.com/zoolinnean/article-pdf/200/1/60/54935859/zlad029.pdf |
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croxfordunivpr:10.1093/zoolinnean/zlad029 2024-02-04T09:58:21+01:00 Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) Gąsiorek, Piotr Degma, Peter Michalczyk, Łukasz Polish National Science Centre Slovak Research and Development Agency 2023 http://dx.doi.org/10.1093/zoolinnean/zlad029 https://academic.oup.com/zoolinnean/article-pdf/200/1/60/54935859/zlad029.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ Zoological Journal of the Linnean Society volume 200, issue 1, page 60-86 ISSN 0024-4082 1096-3642 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2023 croxfordunivpr https://doi.org/10.1093/zoolinnean/zlad029 2024-01-05T09:40:11Z Abstract Numerous evolutionary lineages representing an armoured, limno-terrestrial family Echiniscidae are restricted to high mountainous or polar localities, exhibiting clear cold stenothermic preferences. One such group is the genus Claxtonia, with its type species Claxtonia wendti, originally described from Svalbard and later on reported globally. In this paper, we re-describe this taxon by establishing the neotype from Spitsbergen. We sequenced five genetic markers (18S rRNA, 28S rRNA, ITS-1, ITS-2, and COI) for multiple populations of Claxtonia, including C. mauccii, C. molluscorum, C. wendti, and several potentially new species, collected in the Alps, Andes, Carpathians, Scotland, Iceland, Southern Appalachians, Spitsbergen, Scandinavian Peninsula, Borneo, and the West Indies. The relationships between these species are elucidated thanks to the phylogenetic reconstructions based on nuclear loci. Various Claxtonia species frequently co-occur in mosses and lichens, which hampers delineating their probable geographic ranges. All historical records of C. wendti are questioned in the light of our revision. Delineation of new species within the genus is nipped in the bud due to numerous problems with original species descriptions, unknown intraspecific (including ontogenetic) variability, and the lack of DNA barcodes. Finally, it is hypothesized that Claxtonia potentially comprises two lineages: a cold-stenothermic one and a thermophilic subtropical–tropical one. Article in Journal/Newspaper Arctic Iceland Svalbard Spitsbergen Oxford University Press (via Crossref) Arctic Svalbard Zoological Journal of the Linnean Society |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Gąsiorek, Piotr Degma, Peter Michalczyk, Łukasz Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Numerous evolutionary lineages representing an armoured, limno-terrestrial family Echiniscidae are restricted to high mountainous or polar localities, exhibiting clear cold stenothermic preferences. One such group is the genus Claxtonia, with its type species Claxtonia wendti, originally described from Svalbard and later on reported globally. In this paper, we re-describe this taxon by establishing the neotype from Spitsbergen. We sequenced five genetic markers (18S rRNA, 28S rRNA, ITS-1, ITS-2, and COI) for multiple populations of Claxtonia, including C. mauccii, C. molluscorum, C. wendti, and several potentially new species, collected in the Alps, Andes, Carpathians, Scotland, Iceland, Southern Appalachians, Spitsbergen, Scandinavian Peninsula, Borneo, and the West Indies. The relationships between these species are elucidated thanks to the phylogenetic reconstructions based on nuclear loci. Various Claxtonia species frequently co-occur in mosses and lichens, which hampers delineating their probable geographic ranges. All historical records of C. wendti are questioned in the light of our revision. Delineation of new species within the genus is nipped in the bud due to numerous problems with original species descriptions, unknown intraspecific (including ontogenetic) variability, and the lack of DNA barcodes. Finally, it is hypothesized that Claxtonia potentially comprises two lineages: a cold-stenothermic one and a thermophilic subtropical–tropical one. |
author2 |
Polish National Science Centre Slovak Research and Development Agency |
format |
Article in Journal/Newspaper |
author |
Gąsiorek, Piotr Degma, Peter Michalczyk, Łukasz |
author_facet |
Gąsiorek, Piotr Degma, Peter Michalczyk, Łukasz |
author_sort |
Gąsiorek, Piotr |
title |
Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) |
title_short |
Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) |
title_full |
Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) |
title_fullStr |
Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) |
title_full_unstemmed |
Hiding in the Arctic and in mountains: a (dis)entangled classification of Claxtonia (Heterotardigrada: Echiniscidae) |
title_sort |
hiding in the arctic and in mountains: a (dis)entangled classification of claxtonia (heterotardigrada: echiniscidae) |
publisher |
Oxford University Press (OUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/zoolinnean/zlad029 https://academic.oup.com/zoolinnean/article-pdf/200/1/60/54935859/zlad029.pdf |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Iceland Svalbard Spitsbergen |
genre_facet |
Arctic Iceland Svalbard Spitsbergen |
op_source |
Zoological Journal of the Linnean Society volume 200, issue 1, page 60-86 ISSN 0024-4082 1096-3642 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/zoolinnean/zlad029 |
container_title |
Zoological Journal of the Linnean Society |
_version_ |
1789962788924293120 |