A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing
The worldwide distribution of microinvertebrates on glaciers, the coldest biome, is poorly known. Owing to their tolerance to hostile conditions, small size and dispersal abilities, nematodes, tardigrades and rotifers are considered cosmopolitan and together inhabit various ecosystems. In this study...
Published in: | Journal of Zoology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press
2021
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Online Access: | http://hdl.handle.net/10281/294387 https://doi.org/10.1111/jzo.12832 |
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ftunivmilanobic:oai:boa.unimib.it:10281/294387 2024-04-14T08:01:52+00:00 A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing Zawierucha K. Porazinska D. L. Ficetola G. F. Ambrosini R. Baccolo G. Buda J. Ceballos J. L. Devetter M. Dial R. Franzetti A. Fuglewicz U. Gielly L. Lokas E. Janko K. Novotna Jaromerska T. Koscinski A. Kozlowska A. Ono M. Parnikoza I. Pittino F. Poniecka E. Sommers P. Schmidt S. K. Shain D. Sikorska S. Uetake J. Takeuchi N. Zawierucha, K Porazinska, D Ficetola, G Ambrosini, R Baccolo, G Buda, J Ceballos, J Devetter, M Dial, R Franzetti, A Fuglewicz, U Gielly, L Lokas, E Janko, K Novotna Jaromerska, T Koscinski, A Kozlowska, A Ono, M Parnikoza, I Pittino, F Poniecka, E Sommers, P Schmidt, S Shain, D Sikorska, S Uetake, J Takeuchi, N 2021 http://hdl.handle.net/10281/294387 https://doi.org/10.1111/jzo.12832 eng eng Cambridge University Press country:US info:eu-repo/semantics/altIdentifier/wos/WOS:000570880300001 volume:313 issue:1 firstpage:18 lastpage:36 numberofpages:19 journal:JOURNAL OF ZOOLOGY http://hdl.handle.net/10281/294387 doi:10.1111/jzo.12832 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85091000696 distribution ecological selection extremophile glacier Nematoda psychrophile Rotifera Tardigrada info:eu-repo/semantics/article 2021 ftunivmilanobic https://doi.org/10.1111/jzo.12832 2024-03-21T02:29:33Z The worldwide distribution of microinvertebrates on glaciers, the coldest biome, is poorly known. Owing to their tolerance to hostile conditions, small size and dispersal abilities, nematodes, tardigrades and rotifers are considered cosmopolitan and together inhabit various ecosystems. In this study, we investigated their global distribution in cryoconite holes – a type of freshwater reservoir forming directly in the glacial ice that creates biodiversity hotspots on glaciers. We analysed cryoconite samples (using classical microscopic observations and environmental DNA metabarcoding) from 42 glaciers located around the world (the Arctic, Subarctic, Scandinavia, the Alps, the Caucasus, Siberia, Central Asia, Africa, South America and Antarctica), as well as using literature data. Samples from Antarctic, Karakoram and the Alps were analysed using next-generation sequencing (NGS) and classical observations under microscopes, while all other samples were analysed by microscope alone. Three general outcomes were found: (1) tardigrades and rotifers represented the most common invertebrates in cryoconite holes; (2) tardigrades and rotifers often coexisted together, with one or the other dominating, but the dominant taxon varied by region or by glacier; (3) nematodes – the most abundant, hyperdiverse and widespread metazoans on Earth, including in environments surrounding and seeding glacial surfaces – were consistently absent from cryoconite holes. Despite the general similarity of environmental conditions in cryoconite holes, the distribution of tardigrades and rotifers differed among glaciers, but not in any predictable way, suggesting that their distribution mostly depended on the random dispersal, extreme changes of supraglacial zone or competition. Although nematodes have been found in supraglacial habitats, cryoconite hole environments seem not to provide the necessary conditions for their growth and reproduction. Lack of physiological adaptations to permanently low temperatures (~0°C) and competition for ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Subarctic Siberia Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Antarctic Arctic Journal of Zoology 313 1 18 36 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
distribution ecological selection extremophile glacier Nematoda psychrophile Rotifera Tardigrada |
spellingShingle |
distribution ecological selection extremophile glacier Nematoda psychrophile Rotifera Tardigrada Zawierucha K. Porazinska D. L. Ficetola G. F. Ambrosini R. Baccolo G. Buda J. Ceballos J. L. Devetter M. Dial R. Franzetti A. Fuglewicz U. Gielly L. Lokas E. Janko K. Novotna Jaromerska T. Koscinski A. Kozlowska A. Ono M. Parnikoza I. Pittino F. Poniecka E. Sommers P. Schmidt S. K. Shain D. Sikorska S. Uetake J. Takeuchi N. A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
topic_facet |
distribution ecological selection extremophile glacier Nematoda psychrophile Rotifera Tardigrada |
description |
The worldwide distribution of microinvertebrates on glaciers, the coldest biome, is poorly known. Owing to their tolerance to hostile conditions, small size and dispersal abilities, nematodes, tardigrades and rotifers are considered cosmopolitan and together inhabit various ecosystems. In this study, we investigated their global distribution in cryoconite holes – a type of freshwater reservoir forming directly in the glacial ice that creates biodiversity hotspots on glaciers. We analysed cryoconite samples (using classical microscopic observations and environmental DNA metabarcoding) from 42 glaciers located around the world (the Arctic, Subarctic, Scandinavia, the Alps, the Caucasus, Siberia, Central Asia, Africa, South America and Antarctica), as well as using literature data. Samples from Antarctic, Karakoram and the Alps were analysed using next-generation sequencing (NGS) and classical observations under microscopes, while all other samples were analysed by microscope alone. Three general outcomes were found: (1) tardigrades and rotifers represented the most common invertebrates in cryoconite holes; (2) tardigrades and rotifers often coexisted together, with one or the other dominating, but the dominant taxon varied by region or by glacier; (3) nematodes – the most abundant, hyperdiverse and widespread metazoans on Earth, including in environments surrounding and seeding glacial surfaces – were consistently absent from cryoconite holes. Despite the general similarity of environmental conditions in cryoconite holes, the distribution of tardigrades and rotifers differed among glaciers, but not in any predictable way, suggesting that their distribution mostly depended on the random dispersal, extreme changes of supraglacial zone or competition. Although nematodes have been found in supraglacial habitats, cryoconite hole environments seem not to provide the necessary conditions for their growth and reproduction. Lack of physiological adaptations to permanently low temperatures (~0°C) and competition for ... |
author2 |
Zawierucha, K Porazinska, D Ficetola, G Ambrosini, R Baccolo, G Buda, J Ceballos, J Devetter, M Dial, R Franzetti, A Fuglewicz, U Gielly, L Lokas, E Janko, K Novotna Jaromerska, T Koscinski, A Kozlowska, A Ono, M Parnikoza, I Pittino, F Poniecka, E Sommers, P Schmidt, S Shain, D Sikorska, S Uetake, J Takeuchi, N |
format |
Article in Journal/Newspaper |
author |
Zawierucha K. Porazinska D. L. Ficetola G. F. Ambrosini R. Baccolo G. Buda J. Ceballos J. L. Devetter M. Dial R. Franzetti A. Fuglewicz U. Gielly L. Lokas E. Janko K. Novotna Jaromerska T. Koscinski A. Kozlowska A. Ono M. Parnikoza I. Pittino F. Poniecka E. Sommers P. Schmidt S. K. Shain D. Sikorska S. Uetake J. Takeuchi N. |
author_facet |
Zawierucha K. Porazinska D. L. Ficetola G. F. Ambrosini R. Baccolo G. Buda J. Ceballos J. L. Devetter M. Dial R. Franzetti A. Fuglewicz U. Gielly L. Lokas E. Janko K. Novotna Jaromerska T. Koscinski A. Kozlowska A. Ono M. Parnikoza I. Pittino F. Poniecka E. Sommers P. Schmidt S. K. Shain D. Sikorska S. Uetake J. Takeuchi N. |
author_sort |
Zawierucha K. |
title |
A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
title_short |
A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
title_full |
A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
title_fullStr |
A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
title_full_unstemmed |
A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
title_sort |
hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
http://hdl.handle.net/10281/294387 https://doi.org/10.1111/jzo.12832 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Antarctica Arctic Subarctic Siberia |
genre_facet |
Antarc* Antarctic Antarctica Arctic Subarctic Siberia |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000570880300001 volume:313 issue:1 firstpage:18 lastpage:36 numberofpages:19 journal:JOURNAL OF ZOOLOGY http://hdl.handle.net/10281/294387 doi:10.1111/jzo.12832 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85091000696 |
op_doi |
https://doi.org/10.1111/jzo.12832 |
container_title |
Journal of Zoology |
container_volume |
313 |
container_issue |
1 |
container_start_page |
18 |
op_container_end_page |
36 |
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