A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters
11 p. The phylum Nemertea is an important component of the benthic ecosystems of the Southern Ocean, but its biodiversity is still relatively poorly known in Antarctic waters. There are few common and well-known nemertean species occurring in the shallow Antarctic waters, and these include the conge...
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ftunivalcala:oai:ebuah.uah.es:10017/59394 2024-02-11T09:56:56+01:00 A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters Taboada Moreno, Sergio Leiva , Carlos Junoy Pintos, Juan María Alexander , Frances Riesgo , Ana Universidad de Alcalá. Departamento de Ciencias de la Vida. Unidad docente Zoología 2018-03-09 application/pdf http://hdl.handle.net/10017/59394 https://doi.org/10.1007/s00300-018-2298-1 eng eng info:eu-repo/grantAgreement/DISTANTCOM/CTM2013%42667/ANT/ES// info:eu-repo/grantAgreement/AAD//Project 4142/AU// Polar Biology, 2018, v. , n. , p. - 0722-4060 http://hdl.handle.net/10017/59394 doi:10.1007/s00300-018-2298-1 AR/0000027943 Polar Biology 41 1473 1463 © The Author(s) Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Barcode gap Casey Station Deception Island Haplotype network Phylogeny Taxonomy Zoología Zoology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftunivalcala https://doi.org/10.1007/s00300-018-2298-1 2024-01-24T00:23:53Z 11 p. The phylum Nemertea is an important component of the benthic ecosystems of the Southern Ocean, but its biodiversity is still relatively poorly known in Antarctic waters. There are few common and well-known nemertean species occurring in the shallow Antarctic waters, and these include the congeneric Antarctonemertes valida (Bürger, 1893) and Antarctonemertes riesgoae Taboada et al., 2013, two relatively small brooding hoplonemerteans whose females lay eggs inside cocoons. A third Antarctic member of the genus, Antarctonemertes belgica (Bürger, 1904), was reported only in the original descrip-tion. Here we document the existence of a fourth Antarctic member of the genus Antarctonemertes originally described as Tetrastemma unilineatum Joubin, 1910. Our phylogenetic analysis resulted into the placement of the new Antarctonemertes in a robustly supported clade ?Antarctic Antarctonemertes? containing the other two congeneric Antarctic species (A. valida and A. riesgoae), and pairwise COI molecular distances between the three species ranged from 5.2 to 6.2% (p distance). The analysis of 104 COI sequences of the three species showed star-like haplotype networks, as in other studies on Antarctic invertebrates. Antarctonemertes unilineata comb. nov. is similar in shape to its Antarctic congeneric relatives and its most prominent morphological character is a dorsal mid-longitudinal band present along the body. We also document the pres-ence of a cocoon built by females of A. unilineata comb. nov., a character shared with its Antarctic congeners analysed here. Although the four Antarctic Antarctonemertes species appear to overlap their distribution, A. riesgoae, A. valida and A. belgica appear in sympatry in the West Antarctic shores while A. unilineata comb. nov. has been mainly found in the East Antarctic shores and sub-Antarctic Islands. Distantcom Australian Antarctic Division Article in Journal/Newspaper Antarc* Antarctic Australian Antarctic Division Deception Island Polar Biology Southern Ocean e_Buah - Biblioteca Digital de la Universidad de Alcalá Antarctic Southern Ocean Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) Casey Station ENVELOPE(110.528,110.528,-66.282,-66.282) Joubin ENVELOPE(-64.433,-64.433,-64.783,-64.783) Polar Biology 41 7 1463 1473 |
institution |
Open Polar |
collection |
e_Buah - Biblioteca Digital de la Universidad de Alcalá |
op_collection_id |
ftunivalcala |
language |
English |
topic |
Barcode gap Casey Station Deception Island Haplotype network Phylogeny Taxonomy Zoología Zoology |
spellingShingle |
Barcode gap Casey Station Deception Island Haplotype network Phylogeny Taxonomy Zoología Zoology Taboada Moreno, Sergio Leiva , Carlos Junoy Pintos, Juan María Alexander , Frances Riesgo , Ana A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters |
topic_facet |
Barcode gap Casey Station Deception Island Haplotype network Phylogeny Taxonomy Zoología Zoology |
description |
11 p. The phylum Nemertea is an important component of the benthic ecosystems of the Southern Ocean, but its biodiversity is still relatively poorly known in Antarctic waters. There are few common and well-known nemertean species occurring in the shallow Antarctic waters, and these include the congeneric Antarctonemertes valida (Bürger, 1893) and Antarctonemertes riesgoae Taboada et al., 2013, two relatively small brooding hoplonemerteans whose females lay eggs inside cocoons. A third Antarctic member of the genus, Antarctonemertes belgica (Bürger, 1904), was reported only in the original descrip-tion. Here we document the existence of a fourth Antarctic member of the genus Antarctonemertes originally described as Tetrastemma unilineatum Joubin, 1910. Our phylogenetic analysis resulted into the placement of the new Antarctonemertes in a robustly supported clade ?Antarctic Antarctonemertes? containing the other two congeneric Antarctic species (A. valida and A. riesgoae), and pairwise COI molecular distances between the three species ranged from 5.2 to 6.2% (p distance). The analysis of 104 COI sequences of the three species showed star-like haplotype networks, as in other studies on Antarctic invertebrates. Antarctonemertes unilineata comb. nov. is similar in shape to its Antarctic congeneric relatives and its most prominent morphological character is a dorsal mid-longitudinal band present along the body. We also document the pres-ence of a cocoon built by females of A. unilineata comb. nov., a character shared with its Antarctic congeners analysed here. Although the four Antarctic Antarctonemertes species appear to overlap their distribution, A. riesgoae, A. valida and A. belgica appear in sympatry in the West Antarctic shores while A. unilineata comb. nov. has been mainly found in the East Antarctic shores and sub-Antarctic Islands. Distantcom Australian Antarctic Division |
author2 |
Universidad de Alcalá. Departamento de Ciencias de la Vida. Unidad docente Zoología |
format |
Article in Journal/Newspaper |
author |
Taboada Moreno, Sergio Leiva , Carlos Junoy Pintos, Juan María Alexander , Frances Riesgo , Ana |
author_facet |
Taboada Moreno, Sergio Leiva , Carlos Junoy Pintos, Juan María Alexander , Frances Riesgo , Ana |
author_sort |
Taboada Moreno, Sergio |
title |
A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters |
title_short |
A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters |
title_full |
A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters |
title_fullStr |
A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters |
title_full_unstemmed |
A new member of the genus Antarctonemertes (Hoplonemertea, Nemertea) from Antarctic waters |
title_sort |
new member of the genus antarctonemertes (hoplonemertea, nemertea) from antarctic waters |
publishDate |
2018 |
url |
http://hdl.handle.net/10017/59394 https://doi.org/10.1007/s00300-018-2298-1 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) ENVELOPE(110.528,110.528,-66.282,-66.282) ENVELOPE(-64.433,-64.433,-64.783,-64.783) |
geographic |
Antarctic Southern Ocean Deception Island Casey Station Joubin |
geographic_facet |
Antarctic Southern Ocean Deception Island Casey Station Joubin |
genre |
Antarc* Antarctic Australian Antarctic Division Deception Island Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Australian Antarctic Division Deception Island Polar Biology Southern Ocean |
op_relation |
info:eu-repo/grantAgreement/DISTANTCOM/CTM2013%42667/ANT/ES// info:eu-repo/grantAgreement/AAD//Project 4142/AU// Polar Biology, 2018, v. , n. , p. - 0722-4060 http://hdl.handle.net/10017/59394 doi:10.1007/s00300-018-2298-1 AR/0000027943 Polar Biology 41 1473 1463 |
op_rights |
© The Author(s) Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00300-018-2298-1 |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
7 |
container_start_page |
1463 |
op_container_end_page |
1473 |
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1790607077110972416 |