Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split
All species of Vosmaeria are re-described using type and additional material. The phylogenetic relationships between Vosmaeria ssp. and other demosponge taxa are reconstructed based on 28S-rDNA sequences analyses. V. crustacea, the type species, is widely distributed in the NE Atlantic and character...
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Mangolia Press
2008
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ftmagnoliapress:oai:ojs.mapress.com:article/4486 2023-05-15T15:39:05+02:00 Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split GERASIMOVA, ELENA ERPENBECK, DIRK PLOTKIN, ALEXANDER 2008-01-31 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.1694.1.1 https://doi.org/10.11646/zootaxa.1694.1.1 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.1694.1.1/24661 Copyright (c) 2015 Zootaxa Zootaxa; Vol 1694, No 1: 31 Jan. 2008; 1–37 1175-5334 1175-5326 10.11646/zootaxa.1694.1 Porifera Taxonomy molecular phylogeny Halichondriidae Vosmaeria Johannesia gen. nov. info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2008 ftmagnoliapress https://doi.org/10.11646/zootaxa.1694.1.1 2019-08-06T15:02:59Z All species of Vosmaeria are re-described using type and additional material. The phylogenetic relationships between Vosmaeria ssp. and other demosponge taxa are reconstructed based on 28S-rDNA sequences analyses. V. crustacea, the type species, is widely distributed in the NE Atlantic and characterized by a thinly encrusting growth form, the location of ostia and oscula exclusively on papillae, a dense and firm ectosomal skeleton, the absence of subectosomal aquiferous cavities and the blunt distal tips of tylostyles. Hydrochemical conditions may account for the smaller spicule size of the White Sea population compared to those in the North and Barents Sea. V. reticulosa, known from the Chilean and Peruvian coasts, is distinguished by a massive growth form, a reticulated ectosomal skeleton, the absence of papillae, the scattering of ostia and oscula over the surface, the presence of subectosomal cavities and the acerate distal tips of tylostyles. V. levigata, known exclusively from the English Channel, shares the absence of papillae and the acerate distal tips of tylostyles with V. reticulosa, but the only surviving material consists of dissociated spicules slides, and consequently its status remains unclear. On the basis of substantial morphological differences we propose to split Vosmaeria into two monospecific genera – Vosmaeria, with type species V. crustacea, and Johannesia gen. nov., with type species V. reticulosa. Both genera clearly belong to Halichondriidae based on the tangential arrangement of the ectosomal skeleton, the presence of oxeas. Molecular phylogenetic analyses support a split into two genera and confirm the classification of both within the Halichondriidae. Article in Journal/Newspaper Barents Sea White Sea Magnolia press Barents Sea White Sea Zootaxa 1694 1 1 |
institution |
Open Polar |
collection |
Magnolia press |
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ftmagnoliapress |
language |
English |
topic |
Porifera Taxonomy molecular phylogeny Halichondriidae Vosmaeria Johannesia gen. nov. |
spellingShingle |
Porifera Taxonomy molecular phylogeny Halichondriidae Vosmaeria Johannesia gen. nov. GERASIMOVA, ELENA ERPENBECK, DIRK PLOTKIN, ALEXANDER Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
topic_facet |
Porifera Taxonomy molecular phylogeny Halichondriidae Vosmaeria Johannesia gen. nov. |
description |
All species of Vosmaeria are re-described using type and additional material. The phylogenetic relationships between Vosmaeria ssp. and other demosponge taxa are reconstructed based on 28S-rDNA sequences analyses. V. crustacea, the type species, is widely distributed in the NE Atlantic and characterized by a thinly encrusting growth form, the location of ostia and oscula exclusively on papillae, a dense and firm ectosomal skeleton, the absence of subectosomal aquiferous cavities and the blunt distal tips of tylostyles. Hydrochemical conditions may account for the smaller spicule size of the White Sea population compared to those in the North and Barents Sea. V. reticulosa, known from the Chilean and Peruvian coasts, is distinguished by a massive growth form, a reticulated ectosomal skeleton, the absence of papillae, the scattering of ostia and oscula over the surface, the presence of subectosomal cavities and the acerate distal tips of tylostyles. V. levigata, known exclusively from the English Channel, shares the absence of papillae and the acerate distal tips of tylostyles with V. reticulosa, but the only surviving material consists of dissociated spicules slides, and consequently its status remains unclear. On the basis of substantial morphological differences we propose to split Vosmaeria into two monospecific genera – Vosmaeria, with type species V. crustacea, and Johannesia gen. nov., with type species V. reticulosa. Both genera clearly belong to Halichondriidae based on the tangential arrangement of the ectosomal skeleton, the presence of oxeas. Molecular phylogenetic analyses support a split into two genera and confirm the classification of both within the Halichondriidae. |
format |
Article in Journal/Newspaper |
author |
GERASIMOVA, ELENA ERPENBECK, DIRK PLOTKIN, ALEXANDER |
author_facet |
GERASIMOVA, ELENA ERPENBECK, DIRK PLOTKIN, ALEXANDER |
author_sort |
GERASIMOVA, ELENA |
title |
Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
title_short |
Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
title_full |
Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
title_fullStr |
Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
title_full_unstemmed |
Vosmaeria Fristedt, 1885 (Porifera, Demospongiae, Halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
title_sort |
vosmaeria fristedt, 1885 (porifera, demospongiae, halichondriidae): revision of species, phylogenetic reconstruction and evidence for split |
publisher |
Mangolia Press |
publishDate |
2008 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.1694.1.1 https://doi.org/10.11646/zootaxa.1694.1.1 |
geographic |
Barents Sea White Sea |
geographic_facet |
Barents Sea White Sea |
genre |
Barents Sea White Sea |
genre_facet |
Barents Sea White Sea |
op_source |
Zootaxa; Vol 1694, No 1: 31 Jan. 2008; 1–37 1175-5334 1175-5326 10.11646/zootaxa.1694.1 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.1694.1.1/24661 |
op_rights |
Copyright (c) 2015 Zootaxa |
op_doi |
https://doi.org/10.11646/zootaxa.1694.1.1 |
container_title |
Zootaxa |
container_volume |
1694 |
container_issue |
1 |
container_start_page |
1 |
_version_ |
1766370523898445824 |