Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach
Abstract An integrative approach is crucial in discrimination of species, especially for taxa that are difficult to identify based on morphological characters. In this study, we combine genetics and morphology to assess the diversity of Pterasteridae, a sea star family diversified in deep-sea and po...
Published in: | Zoological Journal of the Linnean Society |
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Oxford University Press (OUP)
2020
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Online Access: | http://dx.doi.org/10.1093/zoolinnean/zlaa097 https://academic.oup.com/zoolinnean/article-pdf/192/1/105/49576206/zlaa097.pdf |
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croxfordunivpr:10.1093/zoolinnean/zlaa097 2024-09-15T18:37:02+00:00 Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach Jossart, Quentin Kochzius, Marc Danis, Bruno Saucède, Thomas Moreau, Camille V E Refugia and Ecosystem Tolerance in the Southern Ocean Belgian Science Policy Office New Zealand Foundation for Research Science and Technology New Zealand Ministry of Fisheries NOAA Satellite Operations Facility Ministry of Business, Innovation and Employment 2020 http://dx.doi.org/10.1093/zoolinnean/zlaa097 https://academic.oup.com/zoolinnean/article-pdf/192/1/105/49576206/zlaa097.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights Zoological Journal of the Linnean Society volume 192, issue 1, page 105-116 ISSN 0024-4082 1096-3642 journal-article 2020 croxfordunivpr https://doi.org/10.1093/zoolinnean/zlaa097 2024-07-22T04:25:07Z Abstract An integrative approach is crucial in discrimination of species, especially for taxa that are difficult to identify based on morphological characters. In this study, we combine genetics and morphology to assess the diversity of Pterasteridae, a sea star family diversified in deep-sea and polar environments. Because of their derived anatomy and the frequent loss of characters during preservation, Pterasteridae are a suitable case for an integrative study. The molecular identification of 191 specimens (mostly from the Southern Ocean) suggests 26–33 species in three genera (Diplopteraster, Hymenaster and Pteraster), which match the morphological identification in 54–62% of cases. The mismatches are either different molecular units that are morphologically indistinguishable (e.g. Pteraster stellifer units 2 and 4) or, conversely, nominal species that are genetically identical (e.g. Hymenaster coccinatus/densus/praecoquis). Several species are shared between the Northern and Southern Hemispheres (e.g. Pteraster jordani/affinis). In conclusion, the taxonomic status of some groups is confirmed, but for others we find the need to re-evaluate the taxonomy at both genus and species levels. This work significantly increases the DNA barcode library of the Southern Ocean species and merges taxonomic information into an identification key that could become a baseline for future studies (pterasteridae-so.identificationkey.org). Article in Journal/Newspaper Southern Ocean Oxford University Press Zoological Journal of the Linnean Society 192 1 105 116 |
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Oxford University Press |
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croxfordunivpr |
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English |
description |
Abstract An integrative approach is crucial in discrimination of species, especially for taxa that are difficult to identify based on morphological characters. In this study, we combine genetics and morphology to assess the diversity of Pterasteridae, a sea star family diversified in deep-sea and polar environments. Because of their derived anatomy and the frequent loss of characters during preservation, Pterasteridae are a suitable case for an integrative study. The molecular identification of 191 specimens (mostly from the Southern Ocean) suggests 26–33 species in three genera (Diplopteraster, Hymenaster and Pteraster), which match the morphological identification in 54–62% of cases. The mismatches are either different molecular units that are morphologically indistinguishable (e.g. Pteraster stellifer units 2 and 4) or, conversely, nominal species that are genetically identical (e.g. Hymenaster coccinatus/densus/praecoquis). Several species are shared between the Northern and Southern Hemispheres (e.g. Pteraster jordani/affinis). In conclusion, the taxonomic status of some groups is confirmed, but for others we find the need to re-evaluate the taxonomy at both genus and species levels. This work significantly increases the DNA barcode library of the Southern Ocean species and merges taxonomic information into an identification key that could become a baseline for future studies (pterasteridae-so.identificationkey.org). |
author2 |
Refugia and Ecosystem Tolerance in the Southern Ocean Belgian Science Policy Office New Zealand Foundation for Research Science and Technology New Zealand Ministry of Fisheries NOAA Satellite Operations Facility Ministry of Business, Innovation and Employment |
format |
Article in Journal/Newspaper |
author |
Jossart, Quentin Kochzius, Marc Danis, Bruno Saucède, Thomas Moreau, Camille V E |
spellingShingle |
Jossart, Quentin Kochzius, Marc Danis, Bruno Saucède, Thomas Moreau, Camille V E Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach |
author_facet |
Jossart, Quentin Kochzius, Marc Danis, Bruno Saucède, Thomas Moreau, Camille V E |
author_sort |
Jossart, Quentin |
title |
Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach |
title_short |
Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach |
title_full |
Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach |
title_fullStr |
Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach |
title_full_unstemmed |
Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach |
title_sort |
diversity of the pterasteridae (asteroidea) in the southern ocean: a molecular and morphological approach |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/zoolinnean/zlaa097 https://academic.oup.com/zoolinnean/article-pdf/192/1/105/49576206/zlaa097.pdf |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Zoological Journal of the Linnean Society volume 192, issue 1, page 105-116 ISSN 0024-4082 1096-3642 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1093/zoolinnean/zlaa097 |
container_title |
Zoological Journal of the Linnean Society |
container_volume |
192 |
container_issue |
1 |
container_start_page |
105 |
op_container_end_page |
116 |
_version_ |
1810481173948792832 |