Antonina Kremenetskaia, Tom Alvestad, Heather D Penney, Jean-François Hamel, Bárbara de Moura Neves, David Côté, Annie Mercier
{"title":"来自拉布拉多海(加拿大东部)的一个新物种:(Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae).","authors":"Antonina Kremenetskaia, Tom Alvestad, Heather D Penney, Jean-François Hamel, Bárbara de Moura Neves, David Côté, Annie Mercier","doi":"10.3897/zookeys.1206.123364","DOIUrl":null,"url":null,"abstract":"<p><p>A new species of holothuroid, <i>Pseudothyonelabradorensis</i> <b>sp. nov.</b> (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 <i>P.raphanus</i> and another North Atlantic species <i>P.serrifera.</i> According to the phylogenetic analysis, <i>P.labradorensis</i> <b>sp. nov.</b> appeared in a well-supported clade with <i>P.raphanus</i> and <i>P.serrifera</i>. Molecular data also suggest polyphyly of the genus, showing the Northeast Pacific species <i>Pseudothyonebelli</i> recovered outside of the clade containing the type species. <i>Pseudothyonelabradorensis</i> <b>sp. nov.</b> is the first species of the genus from the Northwest Atlantic. A key to the North Atlantic <i>Pseudothyone</i> is provided.</p>","PeriodicalId":24051,"journal":{"name":"ZooKeys","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249843/pdf/","citationCount":"0","resultStr":"{\"title\":\"A new species of holothuroid from the Labrador Sea (eastern Canada): <i>Pseudothyonelabradorensis</i> sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae).\",\"authors\":\"Antonina Kremenetskaia, Tom Alvestad, Heather D Penney, Jean-François Hamel, Bárbara de Moura Neves, David Côté, Annie Mercier\",\"doi\":\"10.3897/zookeys.1206.123364\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A new species of holothuroid, <i>Pseudothyonelabradorensis</i> <b>sp. nov.</b> (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 <i>P.raphanus</i> and another North Atlantic species <i>P.serrifera.</i> According to the phylogenetic analysis, <i>P.labradorensis</i> <b>sp. nov.</b> appeared in a well-supported clade with <i>P.raphanus</i> and <i>P.serrifera</i>. Molecular data also suggest polyphyly of the genus, showing the Northeast Pacific species <i>Pseudothyonebelli</i> recovered outside of the clade containing the type species. <i>Pseudothyonelabradorensis</i> <b>sp. nov.</b> is the first species of the genus from the Northwest Atlantic. A key to the North Atlantic <i>Pseudothyone</i> is provided.</p>\",\"PeriodicalId\":24051,\"journal\":{\"name\":\"ZooKeys\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-07-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249843/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ZooKeys\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.3897/zookeys.1206.123364\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/1/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q2\",\"JCRName\":\"ZOOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ZooKeys","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3897/zookeys.1206.123364","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"ZOOLOGY","Score":null,"Total":0}
A new species of holothuroid from the Labrador Sea (eastern Canada): Pseudothyonelabradorensis sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae).
A new species of holothuroid, Pseudothyonelabradorensissp. 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.labradorensissp. 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. Pseudothyonelabradorensissp. nov. is the first species of the genus from the Northwest Atlantic. A key to the North Atlantic Pseudothyone is provided.
期刊介绍:
ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography.
All papers can be freely copied, downloaded, printed and distributed at no charge. Authors and readers are thus encouraged to post the pdf files of published papers on homepages or elsewhere to expedite distribution. There is no charge for color.