Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones
Abstract Hexacorals are important components of macrobenthic communities in the Southern Ocean, dominating Antarctic continental shelves. Most of the 119 sea anemones recorded for the Southern Ocean are endemic (81% and 25% endemic species and genera, respectively, one endemic family) with only two...
Published in: | Zoological Journal of the Linnean Society |
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2021
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Online Access: | http://dx.doi.org/10.1093/zoolinnean/zlaa176 https://academic.oup.com/zoolinnean/article-pdf/193/4/1392/49552130/zlaa176.pdf |
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croxfordunivpr:10.1093/zoolinnean/zlaa176 2024-04-28T08:02:42+00:00 Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones Gusmão, Luciana C Rodríguez, Estefanía Spanish Comisión Interministerial de Ciencia y Tecnología projects National Science Foundation Office of Polar Program 2021 http://dx.doi.org/10.1093/zoolinnean/zlaa176 https://academic.oup.com/zoolinnean/article-pdf/193/4/1392/49552130/zlaa176.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights Zoological Journal of the Linnean Society volume 193, issue 4, page 1392-1415 ISSN 0024-4082 1096-3642 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2021 croxfordunivpr https://doi.org/10.1093/zoolinnean/zlaa176 2024-04-09T07:58:23Z Abstract Hexacorals are important components of macrobenthic communities in the Southern Ocean, dominating Antarctic continental shelves. Most of the 119 sea anemones recorded for the Southern Ocean are endemic (81% and 25% endemic species and genera, respectively, one endemic family) with only two species extending beyond the limits of the Southern Ocean. Over 70% of the 83 genera in the Southern Ocean are monotypic, including half of the generic diversity in superfamily Actinostoloidea, which suggests that Antarctica has been isolated long enough for the evolution of new genera but not for many families to evolve. Here, we describe Chitinactis marmara gen. & sp. nov., a new monotypic actinostoloidean genus from Antarctica diagnosed by its unique bi-layered cuticle on column, hexamerous symmetry, unequal development of younger mesenteries and mesogleal tentacle musculature. We also re-describe and extend the geographic distribution of Scytophorus striatus, another endemic Antarctic species. Based on morphological and molecular data, we establish the phylogenetic position of C. marmara and discuss the implications of the phylogenetic position of S. striatus for the resurrection and circumscription of the family Halcampoididae and the evolution of burrowing sea anemones. Finally, we discuss evidence for an actinostoloidean deep-sea, polar lineage of burrowing sea anemones. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Oxford University Press Zoological Journal of the Linnean Society |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Gusmão, Luciana C Rodríguez, Estefanía Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Hexacorals are important components of macrobenthic communities in the Southern Ocean, dominating Antarctic continental shelves. Most of the 119 sea anemones recorded for the Southern Ocean are endemic (81% and 25% endemic species and genera, respectively, one endemic family) with only two species extending beyond the limits of the Southern Ocean. Over 70% of the 83 genera in the Southern Ocean are monotypic, including half of the generic diversity in superfamily Actinostoloidea, which suggests that Antarctica has been isolated long enough for the evolution of new genera but not for many families to evolve. Here, we describe Chitinactis marmara gen. & sp. nov., a new monotypic actinostoloidean genus from Antarctica diagnosed by its unique bi-layered cuticle on column, hexamerous symmetry, unequal development of younger mesenteries and mesogleal tentacle musculature. We also re-describe and extend the geographic distribution of Scytophorus striatus, another endemic Antarctic species. Based on morphological and molecular data, we establish the phylogenetic position of C. marmara and discuss the implications of the phylogenetic position of S. striatus for the resurrection and circumscription of the family Halcampoididae and the evolution of burrowing sea anemones. Finally, we discuss evidence for an actinostoloidean deep-sea, polar lineage of burrowing sea anemones. |
author2 |
Spanish Comisión Interministerial de Ciencia y Tecnología projects National Science Foundation Office of Polar Program |
format |
Article in Journal/Newspaper |
author |
Gusmão, Luciana C Rodríguez, Estefanía |
author_facet |
Gusmão, Luciana C Rodríguez, Estefanía |
author_sort |
Gusmão, Luciana C |
title |
Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
title_short |
Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
title_full |
Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
title_fullStr |
Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
title_full_unstemmed |
Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
title_sort |
two sea anemones (cnidaria: anthozoa: actiniaria) from the southern ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/zoolinnean/zlaa176 https://academic.oup.com/zoolinnean/article-pdf/193/4/1392/49552130/zlaa176.pdf |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
Zoological Journal of the Linnean Society volume 193, issue 4, page 1392-1415 ISSN 0024-4082 1096-3642 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1093/zoolinnean/zlaa176 |
container_title |
Zoological Journal of the Linnean Society |
_version_ |
1797573999277899776 |