The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea).
16 pages International audience Cryptic species have been repeatedly described for two decades among the Antarctic fauna, challenging the classic model of Antarctic species with circumpolar distributions and leading to revisit the richness of the Antarctic fauna. No cryptic species had been so far r...
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ftunivnantes:oai:HAL:hal-01310170v1 2023-05-15T13:54:39+02:00 The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). David, Bruno Saucède, Thomas Chenuil, Anne Steimetz, Emilie de Ridder, Chantal Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Muséum national d'Histoire naturelle (MNHN) Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Biologie Marine Université libre de Bruxelles (ULB) Work supported by F.R.S-FNRS ‘‘short stay abroad’’ travel grants (Grant Nr. 2013/V3/5/035), by the Belgian Science Policy Office (BELSPO, Contract nr. BR/132/A1/vERSO, contribution n° 9). 2016-05 https://hal.archives-ouvertes.fr/hal-01310170 https://doi.org/10.1007/s00300-015-1842-5 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1842-5 hal-01310170 https://hal.archives-ouvertes.fr/hal-01310170 doi:10.1007/s00300-015-1842-5 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.archives-ouvertes.fr/hal-01310170 Polar Biology, Springer Verlag, 2016, 39 (5), pp.897-912. ⟨10.1007/s00300-015-1842-5⟩ http://link.springer.com/article/10.1007%2Fs00300-015-1842-5 Abatus bidens Abatus cavernosus Cryptic species Echinoidea Schizasteridae Southern Ocean [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy info:eu-repo/semantics/article Journal articles 2016 ftunivnantes https://doi.org/10.1007/s00300-015-1842-5 2022-08-30T23:21:10Z 16 pages International audience Cryptic species have been repeatedly described for two decades among the Antarctic fauna, challenging the classic model of Antarctic species with circumpolar distributions and leading to revisit the richness of the Antarctic fauna. No cryptic species had been so far recorded among Antarctic echinoids, which are, however, relatively well diversified in the Southern Ocean. The R/V Polarstern cruise PS81 (ANT XXIX/3) came across populations of Abatus bidens, a schizasterid so far known by few specimens that were found living in sympatry with the species Abatus cavernosus. The species A. cavernosus is reported to have a circum-Antarctic distribution, while A. bidens is only recorded with certainty in South Georgia and at the northern tip of the Antarctic Peninsula. Based on genetic and morphological analyses, our results clearly show that A. bidens and A. cavernosus are two distinct species. The analyzed specimens of A. bidens group together in two haplogroups separated from one another by 2.7 % of nucleotide differences. They are located in the Weddell Sea and in the Bransfield Strait. Specimens of A. cavernosus form one single haplogroup separated from haplogroups of A. bidens by 5 and 3.5 % of nucleotide differences, respectively. The species was collected in the Drake Passage and in the Bransfield Strait. Morphological analyses differentiate A. bidens from A. cavernosus. In contrast, the two genetic groups of A. bidens cannot be differentiated from one another based on morphology alone, suggesting that they may represent a case of cryptic species, common in many Antarctic taxa, but not yet reported in Antarctic echinoids. This needs to be confirmed by complementary analyses of independent genetic markers. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bransfield Strait Drake Passage Polar Biology Southern Ocean Weddell Sea Université de Nantes: HAL-UNIV-NANTES Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Bransfield Strait Weddell Polar Biology 39 5 897 912 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Abatus bidens Abatus cavernosus Cryptic species Echinoidea Schizasteridae Southern Ocean [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy |
spellingShingle |
Abatus bidens Abatus cavernosus Cryptic species Echinoidea Schizasteridae Southern Ocean [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy David, Bruno Saucède, Thomas Chenuil, Anne Steimetz, Emilie de Ridder, Chantal The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). |
topic_facet |
Abatus bidens Abatus cavernosus Cryptic species Echinoidea Schizasteridae Southern Ocean [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy |
description |
16 pages International audience Cryptic species have been repeatedly described for two decades among the Antarctic fauna, challenging the classic model of Antarctic species with circumpolar distributions and leading to revisit the richness of the Antarctic fauna. No cryptic species had been so far recorded among Antarctic echinoids, which are, however, relatively well diversified in the Southern Ocean. The R/V Polarstern cruise PS81 (ANT XXIX/3) came across populations of Abatus bidens, a schizasterid so far known by few specimens that were found living in sympatry with the species Abatus cavernosus. The species A. cavernosus is reported to have a circum-Antarctic distribution, while A. bidens is only recorded with certainty in South Georgia and at the northern tip of the Antarctic Peninsula. Based on genetic and morphological analyses, our results clearly show that A. bidens and A. cavernosus are two distinct species. The analyzed specimens of A. bidens group together in two haplogroups separated from one another by 2.7 % of nucleotide differences. They are located in the Weddell Sea and in the Bransfield Strait. Specimens of A. cavernosus form one single haplogroup separated from haplogroups of A. bidens by 5 and 3.5 % of nucleotide differences, respectively. The species was collected in the Drake Passage and in the Bransfield Strait. Morphological analyses differentiate A. bidens from A. cavernosus. In contrast, the two genetic groups of A. bidens cannot be differentiated from one another based on morphology alone, suggesting that they may represent a case of cryptic species, common in many Antarctic taxa, but not yet reported in Antarctic echinoids. This needs to be confirmed by complementary analyses of independent genetic markers. |
author2 |
Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Muséum national d'Histoire naturelle (MNHN) Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Biologie Marine Université libre de Bruxelles (ULB) Work supported by F.R.S-FNRS ‘‘short stay abroad’’ travel grants (Grant Nr. 2013/V3/5/035), by the Belgian Science Policy Office (BELSPO, Contract nr. BR/132/A1/vERSO, contribution n° 9). |
format |
Article in Journal/Newspaper |
author |
David, Bruno Saucède, Thomas Chenuil, Anne Steimetz, Emilie de Ridder, Chantal |
author_facet |
David, Bruno Saucède, Thomas Chenuil, Anne Steimetz, Emilie de Ridder, Chantal |
author_sort |
David, Bruno |
title |
The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). |
title_short |
The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). |
title_full |
The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). |
title_fullStr |
The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). |
title_full_unstemmed |
The taxonomic challenge posed by the Antarctic echinoids Abatus bidens and Abatus cavernosus (Schizasteridae, Echinoidea). |
title_sort |
taxonomic challenge posed by the antarctic echinoids abatus bidens and abatus cavernosus (schizasteridae, echinoidea). |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.archives-ouvertes.fr/hal-01310170 https://doi.org/10.1007/s00300-015-1842-5 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Bransfield Strait Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Bransfield Strait Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Bransfield Strait Drake Passage Polar Biology Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bransfield Strait Drake Passage Polar Biology Southern Ocean Weddell Sea |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.archives-ouvertes.fr/hal-01310170 Polar Biology, Springer Verlag, 2016, 39 (5), pp.897-912. ⟨10.1007/s00300-015-1842-5⟩ http://link.springer.com/article/10.1007%2Fs00300-015-1842-5 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1842-5 hal-01310170 https://hal.archives-ouvertes.fr/hal-01310170 doi:10.1007/s00300-015-1842-5 |
op_doi |
https://doi.org/10.1007/s00300-015-1842-5 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
5 |
container_start_page |
897 |
op_container_end_page |
912 |
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1766260712066252800 |