Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA
Antarctica is one of the harshest environments on the planet because of its extreme climatic conditions, with prolonged winters, freezing temperatures and lack of liquid water. While almost the entire continent (99.7%) is covered year round by snow and ice, some mountain peaks and coastal areas are...
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2014
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Online Access: | http://hdl.handle.net/10072/63818 https://doi.org/10.1080/14888386.2014.930717 |
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ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/63818 2023-05-15T13:51:20+02:00 Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA Velasco-Castrillón, Alejandro Page, Tim A.E. Gibson, John I. Stevens, Mark. 2014 http://hdl.handle.net/10072/63818 https://doi.org/10.1080/14888386.2014.930717 English eng Taylor & Francis Biodiversity Biogeography and Phylogeography Journal article 2014 ftgriffithuniv https://doi.org/10.1080/14888386.2014.930717 2018-07-30T10:39:50Z Antarctica is one of the harshest environments on the planet because of its extreme climatic conditions, with prolonged winters, freezing temperatures and lack of liquid water. While almost the entire continent (99.7%) is covered year round by snow and ice, some mountain peaks and coastal areas are ice-free and sustain life. Invertebrates dominate in this environment, but despite their obvious abundance, little is known of one major player, the rotifers. In this study, we examine the distribution and diversity of rotifers from across continental Antarctica using mitochondrial c oxidase subunit I DNA sequences, and compare to sequences extracted from specimens collected in limited locations in the Antarctic Peninsula (AP) and in Tierra del Fuego (TF) in South America. We identified rotifers of the Class Bdelloidea to be the most frequently sampled micro-organisms in soil and limno-terrestrial environments. From the Antarctic samples, 514 sequences were generated and 37 distinct lineages were identified (40 putative species based on the PTP model) within Philodina, Adineta and unidentified bdelloids (all currently considered endemic to Antarctica). Overall, we observed widespread ranges for some rotifers in continental Antarctica, many of them exceeding 2000 km. Only one bdelloid lineage (Adineta cf. gracilis) from continental Antarctica was also present in maritime Antarctica. No close similarities were found with worldwide locations, or amongst AP and TF. Our broad coverage across Antarctica shows unique lineages that may represent potential species surpassing what is presently known from morphology, even when conservative approaches are applied for species delimitation. No Full Text Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Tierra del Fuego Griffith University: Griffith Research Online Antarctic Antarctic Peninsula The Antarctic Biodiversity 15 2-3 130 142 |
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Open Polar |
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Griffith University: Griffith Research Online |
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ftgriffithuniv |
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English |
topic |
Biogeography and Phylogeography |
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Biogeography and Phylogeography Velasco-Castrillón, Alejandro Page, Tim A.E. Gibson, John I. Stevens, Mark. Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA |
topic_facet |
Biogeography and Phylogeography |
description |
Antarctica is one of the harshest environments on the planet because of its extreme climatic conditions, with prolonged winters, freezing temperatures and lack of liquid water. While almost the entire continent (99.7%) is covered year round by snow and ice, some mountain peaks and coastal areas are ice-free and sustain life. Invertebrates dominate in this environment, but despite their obvious abundance, little is known of one major player, the rotifers. In this study, we examine the distribution and diversity of rotifers from across continental Antarctica using mitochondrial c oxidase subunit I DNA sequences, and compare to sequences extracted from specimens collected in limited locations in the Antarctic Peninsula (AP) and in Tierra del Fuego (TF) in South America. We identified rotifers of the Class Bdelloidea to be the most frequently sampled micro-organisms in soil and limno-terrestrial environments. From the Antarctic samples, 514 sequences were generated and 37 distinct lineages were identified (40 putative species based on the PTP model) within Philodina, Adineta and unidentified bdelloids (all currently considered endemic to Antarctica). Overall, we observed widespread ranges for some rotifers in continental Antarctica, many of them exceeding 2000 km. Only one bdelloid lineage (Adineta cf. gracilis) from continental Antarctica was also present in maritime Antarctica. No close similarities were found with worldwide locations, or amongst AP and TF. Our broad coverage across Antarctica shows unique lineages that may represent potential species surpassing what is presently known from morphology, even when conservative approaches are applied for species delimitation. No Full Text |
format |
Article in Journal/Newspaper |
author |
Velasco-Castrillón, Alejandro Page, Tim A.E. Gibson, John I. Stevens, Mark. |
author_facet |
Velasco-Castrillón, Alejandro Page, Tim A.E. Gibson, John I. Stevens, Mark. |
author_sort |
Velasco-Castrillón, Alejandro |
title |
Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA |
title_short |
Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA |
title_full |
Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA |
title_fullStr |
Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA |
title_full_unstemmed |
Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA |
title_sort |
surprisingly high levels of biodiversity and endemism amongst antarctic rotifers uncovered with mitochondrial dna |
publisher |
Taylor & Francis |
publishDate |
2014 |
url |
http://hdl.handle.net/10072/63818 https://doi.org/10.1080/14888386.2014.930717 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Tierra del Fuego |
op_relation |
Biodiversity |
op_doi |
https://doi.org/10.1080/14888386.2014.930717 |
container_title |
Biodiversity |
container_volume |
15 |
container_issue |
2-3 |
container_start_page |
130 |
op_container_end_page |
142 |
_version_ |
1766255153119232000 |