Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda)
The amphipod genus Epimeria is very speciose in Antarctic waters. Although their brooding biology, massive and heavily calcified body predict low dispersal capabilities, many Epimeria species are documented to have circum-Antarctic distributions. However, these distribution records are inevitably de...
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ftunivlouvain:oai:dial.uclouvain.be:boreal:191959 2024-05-12T07:56:39+00:00 Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) Verheye, Marie Thierry Backeljau Cédric d’Udekem d’Acoz UCL - SST/ELI/ELIB - Biodiversity 2016 http://hdl.handle.net/2078.1/191959 https://doi.org/10.1007/s00300-016-1910-5 eng eng Springer info:eu-repo/grantAgreement/FRS-FNRS/FRIA/FRIA boreal:191959 http://hdl.handle.net/2078.1/191959 doi:10.1007/s00300-016-1910-5 urn:ISSN:0722-4060 urn:EISSN:1432-2056 info:eu-repo/semantics/restrictedAccess Polar Biology, Vol. 39, p. 925-945 Amphipoda Southern Ocean Systematics Biogeography Species delimitation Phylogeny info:eu-repo/semantics/article 2016 ftunivlouvain https://doi.org/10.1007/s00300-016-1910-5 2024-04-17T16:55:35Z The amphipod genus Epimeria is very speciose in Antarctic waters. Although their brooding biology, massive and heavily calcified body predict low dispersal capabilities, many Epimeria species are documented to have circum-Antarctic distributions. However, these distribution records are inevitably dependent on the morphological species definition. Yet, recent DNA evidence suggests that some of these Epimeria species may be complexes of species with restricted distributions. Mitochondrial COI and nuclear 28S rDNA sequence data were used to infer evolutionary relationships among 16 nominal Epimeria species from the Antarctic Peninsula, the eastern Weddell Sea and the Adélie Coast. Based on this phylogenetic framework, we used morphology and the DNA-based methods GMYC, bPTP and BPP to investigate species boundaries, in order to revise the diversity and distribution patterns within the genus. Most of the studied species appeared to be complexes of pseudocryptic species, presenting small and previously overlooked morphological differences. Altogether, 25 lineages were identified as putative new species, increasing twofold the actual number of Antarctic Epimeria species. Whereas most of the species may be geographically restricted to one of the three studied regions, some still have very wide distribution ranges, hence suggesting a potential for large-scale dispersal. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Iceberg* Polar Biology Southern Ocean Weddell Sea DIAL@UCLouvain (Université catholique de Louvain) Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Weddell Polar Biology 39 5 925 945 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
Amphipoda Southern Ocean Systematics Biogeography Species delimitation Phylogeny |
spellingShingle |
Amphipoda Southern Ocean Systematics Biogeography Species delimitation Phylogeny Verheye, Marie Thierry Backeljau Cédric d’Udekem d’Acoz Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) |
topic_facet |
Amphipoda Southern Ocean Systematics Biogeography Species delimitation Phylogeny |
description |
The amphipod genus Epimeria is very speciose in Antarctic waters. Although their brooding biology, massive and heavily calcified body predict low dispersal capabilities, many Epimeria species are documented to have circum-Antarctic distributions. However, these distribution records are inevitably dependent on the morphological species definition. Yet, recent DNA evidence suggests that some of these Epimeria species may be complexes of species with restricted distributions. Mitochondrial COI and nuclear 28S rDNA sequence data were used to infer evolutionary relationships among 16 nominal Epimeria species from the Antarctic Peninsula, the eastern Weddell Sea and the Adélie Coast. Based on this phylogenetic framework, we used morphology and the DNA-based methods GMYC, bPTP and BPP to investigate species boundaries, in order to revise the diversity and distribution patterns within the genus. Most of the studied species appeared to be complexes of pseudocryptic species, presenting small and previously overlooked morphological differences. Altogether, 25 lineages were identified as putative new species, increasing twofold the actual number of Antarctic Epimeria species. Whereas most of the species may be geographically restricted to one of the three studied regions, some still have very wide distribution ranges, hence suggesting a potential for large-scale dispersal. |
author2 |
UCL - SST/ELI/ELIB - Biodiversity |
format |
Article in Journal/Newspaper |
author |
Verheye, Marie Thierry Backeljau Cédric d’Udekem d’Acoz |
author_facet |
Verheye, Marie Thierry Backeljau Cédric d’Udekem d’Acoz |
author_sort |
Verheye, Marie |
title |
Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) |
title_short |
Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) |
title_full |
Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) |
title_fullStr |
Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) |
title_full_unstemmed |
Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda) |
title_sort |
looking beneath the tip of the iceberg: diversification of the genus epimeria on the antarctic shelf (crustacea, amphipoda) |
publisher |
Springer |
publishDate |
2016 |
url |
http://hdl.handle.net/2078.1/191959 https://doi.org/10.1007/s00300-016-1910-5 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Iceberg* Polar Biology Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Iceberg* Polar Biology Southern Ocean Weddell Sea |
op_source |
Polar Biology, Vol. 39, p. 925-945 |
op_relation |
info:eu-repo/grantAgreement/FRS-FNRS/FRIA/FRIA boreal:191959 http://hdl.handle.net/2078.1/191959 doi:10.1007/s00300-016-1910-5 urn:ISSN:0722-4060 urn:EISSN:1432-2056 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-016-1910-5 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
5 |
container_start_page |
925 |
op_container_end_page |
945 |
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1798836847860776960 |