A new species of holothuroid from the Labrador Sea (eastern Canada):
A new species of holothuroid, Pseudothyonelabradorensis sp. nov. (order Dendrochirotida and family Sclerodactylidae), was discovered off the coast of Labrador (eastern Canada) at a depth of 740-969 m. Two specimens were described based on morphological and genetic parameters. Distinctive characters...
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ftpubmed:39015530 2024-09-15T18:17:16+00:00 A new species of holothuroid from the Labrador Sea (eastern Canada): Kremenetskaia, Antonina Alvestad, Tom Penney, Heather D Hamel, Jean-François de Moura Neves, Bárbara Côté, David Mercier, Annie 2024 https://doi.org/10.3897/zookeys.1206.123364 https://pubmed.ncbi.nlm.nih.gov/39015530 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249843/ eng eng PubMed Central https://doi.org/10.3897/zookeys.1206.123364 https://pubmed.ncbi.nlm.nih.gov/39015530 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249843/ Zookeys ISSN:1313-2989 Volume:1206 Bathyal fauna Northwest Atlantic fauna distribution sea cucumbers taxonomy Journal Article 2024 ftpubmed https://doi.org/10.3897/zookeys.1206.123364 2024-07-18T16:03:00Z A new species of holothuroid, Pseudothyonelabradorensis sp. nov. (order Dendrochirotida and family Sclerodactylidae), was discovered off the coast of Labrador (eastern Canada) at a depth of 740-969 m. Two specimens were described based on morphological and genetic parameters. Distinctive characters included pinkish body colour, presence of tube feet on a 'tail', supporting rod-shaped ossicles in the tube feet, and rod-shaped ossicles in the tentacles. To investigate its phylogenetic relationships, partial sequences of COI were obtained for the new species as well as for the type species P.raphanus and another North Atlantic species P.serrifera. According to the phylogenetic analysis, P.labradorensis sp. nov. appeared in a well-supported clade with P.raphanus and P.serrifera. Molecular data also suggest polyphyly of the genus, showing the Northeast Pacific species Pseudothyonebelli recovered outside of the clade containing the type species. Pseudothyonelabradorensis sp. nov. is the first species of the genus from the Northwest Atlantic. A key to the North Atlantic Pseudothyone is provided. Article in Journal/Newspaper Labrador Sea North Atlantic Northwest Atlantic PubMed Central (PMC) ZooKeys 1206 191 206 |
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Open Polar |
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PubMed Central (PMC) |
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English |
topic |
Bathyal fauna Northwest Atlantic fauna distribution sea cucumbers taxonomy |
spellingShingle |
Bathyal fauna Northwest Atlantic fauna distribution sea cucumbers taxonomy Kremenetskaia, Antonina Alvestad, Tom Penney, Heather D Hamel, Jean-François de Moura Neves, Bárbara Côté, David Mercier, Annie A new species of holothuroid from the Labrador Sea (eastern Canada): |
topic_facet |
Bathyal fauna Northwest Atlantic fauna distribution sea cucumbers taxonomy |
description |
A new species of holothuroid, Pseudothyonelabradorensis sp. nov. (order Dendrochirotida and family Sclerodactylidae), was discovered off the coast of Labrador (eastern Canada) at a depth of 740-969 m. Two specimens were described based on morphological and genetic parameters. Distinctive characters included pinkish body colour, presence of tube feet on a 'tail', supporting rod-shaped ossicles in the tube feet, and rod-shaped ossicles in the tentacles. To investigate its phylogenetic relationships, partial sequences of COI were obtained for the new species as well as for the type species P.raphanus and another North Atlantic species P.serrifera. According to the phylogenetic analysis, P.labradorensis sp. nov. appeared in a well-supported clade with P.raphanus and P.serrifera. Molecular data also suggest polyphyly of the genus, showing the Northeast Pacific species Pseudothyonebelli recovered outside of the clade containing the type species. Pseudothyonelabradorensis sp. nov. is the first species of the genus from the Northwest Atlantic. A key to the North Atlantic Pseudothyone is provided. |
format |
Article in Journal/Newspaper |
author |
Kremenetskaia, Antonina Alvestad, Tom Penney, Heather D Hamel, Jean-François de Moura Neves, Bárbara Côté, David Mercier, Annie |
author_facet |
Kremenetskaia, Antonina Alvestad, Tom Penney, Heather D Hamel, Jean-François de Moura Neves, Bárbara Côté, David Mercier, Annie |
author_sort |
Kremenetskaia, Antonina |
title |
A new species of holothuroid from the Labrador Sea (eastern Canada): |
title_short |
A new species of holothuroid from the Labrador Sea (eastern Canada): |
title_full |
A new species of holothuroid from the Labrador Sea (eastern Canada): |
title_fullStr |
A new species of holothuroid from the Labrador Sea (eastern Canada): |
title_full_unstemmed |
A new species of holothuroid from the Labrador Sea (eastern Canada): |
title_sort |
a new species of holothuroid from the labrador sea (eastern canada): |
publisher |
PubMed Central |
publishDate |
2024 |
url |
https://doi.org/10.3897/zookeys.1206.123364 https://pubmed.ncbi.nlm.nih.gov/39015530 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249843/ |
genre |
Labrador Sea North Atlantic Northwest Atlantic |
genre_facet |
Labrador Sea North Atlantic Northwest Atlantic |
op_source |
Zookeys ISSN:1313-2989 Volume:1206 |
op_relation |
https://doi.org/10.3897/zookeys.1206.123364 https://pubmed.ncbi.nlm.nih.gov/39015530 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249843/ |
op_doi |
https://doi.org/10.3897/zookeys.1206.123364 |
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ZooKeys |
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1206 |
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191 |
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