Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus
The extremely inhospitable Antarctic ecosystems confines plants and invertebrates to sparse ice-free areas. These species survived for millions of years in isolated refugia where population divergence and differentiation can occur, potentially resulting in speciation. The limited dispersal abilities...
Published in: | Proceedings of 1st International Electronic Conference on Biological Diversity, Ecology and Evolution |
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Online Access: | http://hdl.handle.net/11365/1136104 https://doi.org/10.3390/BDEE2021-09405 https://sciforum.net/paper/view/9405 |
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ftunivsiena:oai:usiena-air.unisi.it:11365/1136104 2024-01-28T10:00:05+01:00 Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus Brunetti Claudia Siepel Henk Fanciulli Pietro Paolo Nardi Francesco Carapelli Antonio Brunetti, Claudia Siepel, Henk Fanciulli, PIETRO PAOLO Nardi, Francesco Carapelli, Antonio 2021 ELETTRONICO http://hdl.handle.net/11365/1136104 https://doi.org/10.3390/BDEE2021-09405 https://sciforum.net/paper/view/9405 eng eng MDPI country:CHE place:Basil ispartofbook:1st International Electronic Conference on Biological Diversity, Ecology and Evolution session Animal Diversity 1st International Electronic Conference on Biological Diversity, Ecology and Evolution session Animal Diversity volume:68 journal:PROCEEDINGS http://hdl.handle.net/11365/1136104 doi:10.3390/BDEE2021-09405 https://sciforum.net/paper/view/9405 info:eu-repo/semantics/openAccess Victoria Land molecular phylogeny biogeography terrestrial invertebrate Acari Stereotydeus spp info:eu-repo/semantics/conferenceObject 2021 ftunivsiena https://doi.org/10.3390/BDEE2021-09405 2024-01-02T23:24:33Z The extremely inhospitable Antarctic ecosystems confines plants and invertebrates to sparse ice-free areas. These species survived for millions of years in isolated refugia where population divergence and differentiation can occur, potentially resulting in speciation. The limited dispersal abilities of invertebrate species combined with their specific habitat requirements and the substantial geographical barriers can drastically reduce the gene flow between different populations, resulting in high genetic differentiation between clusters of individuals. With more than 100 described species, mites are surely the most diverse invertebrate group of Continental Antarctica. Among them, the free-living genus Stereotydeus Berlese, 1901 (Acari: Prostigmata) is represented by 6 Antarctic species of which 5 occur along the coastal zones of Victoria Land and the Transantarctic Mountains. In order to examine the biodiversity and the phylogeographic distribution ranges of Stereotydeus spp. across Victoria Land, we conducted an integrated analysis of the genus through morphological, phylogenetic and population genetics studies. Specimens were collected from nine localities in Victoria Land and sequenced for the cytochrome c oxidase subunit I mitochondrial gene (COI) and a fragment of the 28S ribosomal RNA-encoding gene using mite specific primers. We morphologically identified and described two novel Stereotydeus species from central and south Victoria Land. While the relationships between the cox1 haplotypes from North Victoria Land are well defined, the distribution of the central-southern species appears more complex. This suggests a possible common evolutionary history in a number of isolated glacial refugia, with scarce gene flow even within populations probably resulting from inter/intra-specific events influenced by several abiotic/biotic factors. Recent threats to Antarctic biodiversity like accelerated climate change, pollution, biological invasions and the increase of human activities have caused increased calls for ... Conference Object Antarc* Antarctic Antarctica Victoria Land Mite Università degli Studi di Siena: USiena air Antarctic Victoria Land Transantarctic Mountains Proceedings of 1st International Electronic Conference on Biological Diversity, Ecology and Evolution 9405 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Victoria Land molecular phylogeny biogeography terrestrial invertebrate Acari Stereotydeus spp |
spellingShingle |
Victoria Land molecular phylogeny biogeography terrestrial invertebrate Acari Stereotydeus spp Brunetti Claudia Siepel Henk Fanciulli Pietro Paolo Nardi Francesco Carapelli Antonio Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus |
topic_facet |
Victoria Land molecular phylogeny biogeography terrestrial invertebrate Acari Stereotydeus spp |
description |
The extremely inhospitable Antarctic ecosystems confines plants and invertebrates to sparse ice-free areas. These species survived for millions of years in isolated refugia where population divergence and differentiation can occur, potentially resulting in speciation. The limited dispersal abilities of invertebrate species combined with their specific habitat requirements and the substantial geographical barriers can drastically reduce the gene flow between different populations, resulting in high genetic differentiation between clusters of individuals. With more than 100 described species, mites are surely the most diverse invertebrate group of Continental Antarctica. Among them, the free-living genus Stereotydeus Berlese, 1901 (Acari: Prostigmata) is represented by 6 Antarctic species of which 5 occur along the coastal zones of Victoria Land and the Transantarctic Mountains. In order to examine the biodiversity and the phylogeographic distribution ranges of Stereotydeus spp. across Victoria Land, we conducted an integrated analysis of the genus through morphological, phylogenetic and population genetics studies. Specimens were collected from nine localities in Victoria Land and sequenced for the cytochrome c oxidase subunit I mitochondrial gene (COI) and a fragment of the 28S ribosomal RNA-encoding gene using mite specific primers. We morphologically identified and described two novel Stereotydeus species from central and south Victoria Land. While the relationships between the cox1 haplotypes from North Victoria Land are well defined, the distribution of the central-southern species appears more complex. This suggests a possible common evolutionary history in a number of isolated glacial refugia, with scarce gene flow even within populations probably resulting from inter/intra-specific events influenced by several abiotic/biotic factors. Recent threats to Antarctic biodiversity like accelerated climate change, pollution, biological invasions and the increase of human activities have caused increased calls for ... |
author2 |
Brunetti, Claudia Siepel, Henk Fanciulli, PIETRO PAOLO Nardi, Francesco Carapelli, Antonio |
format |
Conference Object |
author |
Brunetti Claudia Siepel Henk Fanciulli Pietro Paolo Nardi Francesco Carapelli Antonio |
author_facet |
Brunetti Claudia Siepel Henk Fanciulli Pietro Paolo Nardi Francesco Carapelli Antonio |
author_sort |
Brunetti Claudia |
title |
Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus |
title_short |
Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus |
title_full |
Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus |
title_fullStr |
Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus |
title_full_unstemmed |
Investigating the Diversity of the Terrestrial Invertebrate Fauna of Antarctica: A Closer Look at the Stereotydeus (Acari: Prostigmata) Genus |
title_sort |
investigating the diversity of the terrestrial invertebrate fauna of antarctica: a closer look at the stereotydeus (acari: prostigmata) genus |
publisher |
MDPI |
publishDate |
2021 |
url |
http://hdl.handle.net/11365/1136104 https://doi.org/10.3390/BDEE2021-09405 https://sciforum.net/paper/view/9405 |
geographic |
Antarctic Victoria Land Transantarctic Mountains |
geographic_facet |
Antarctic Victoria Land Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica Victoria Land Mite |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land Mite |
op_relation |
ispartofbook:1st International Electronic Conference on Biological Diversity, Ecology and Evolution session Animal Diversity 1st International Electronic Conference on Biological Diversity, Ecology and Evolution session Animal Diversity volume:68 journal:PROCEEDINGS http://hdl.handle.net/11365/1136104 doi:10.3390/BDEE2021-09405 https://sciforum.net/paper/view/9405 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/BDEE2021-09405 |
container_title |
Proceedings of 1st International Electronic Conference on Biological Diversity, Ecology and Evolution |
container_start_page |
9405 |
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1789340324486709248 |