Haliclona (Gellius) tylotoxa Hentschel 1914
Haliclona (Gellius) tylotoxa (Hentschel, 1914) (Fig. 22, Tab. 18) Haliclona tylotoxus (Hentschel, 1914): Koltun 1964: 102, 1976: 195. Synonymy: Gellius tylotoxus Hentschel, 1914: 131, pl. 4, fig. 14, pl. 8, fig. 13. Material. 1 specimen from station 048- 1 (SMF 11778), 602.1 m, 70 ° 23.94 ' S,...
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Biodiversity Taxonomy Animalia Porifera Demospongiae Haplosclerida Chalinidae Haliclona Haliclona tylotoxa |
spellingShingle |
Biodiversity Taxonomy Animalia Porifera Demospongiae Haplosclerida Chalinidae Haliclona Haliclona tylotoxa Göcke, Christian Janussen, Dorte Haliclona (Gellius) tylotoxa Hentschel 1914 |
topic_facet |
Biodiversity Taxonomy Animalia Porifera Demospongiae Haplosclerida Chalinidae Haliclona Haliclona tylotoxa |
description |
Haliclona (Gellius) tylotoxa (Hentschel, 1914) (Fig. 22, Tab. 18) Haliclona tylotoxus (Hentschel, 1914): Koltun 1964: 102, 1976: 195. Synonymy: Gellius tylotoxus Hentschel, 1914: 131, pl. 4, fig. 14, pl. 8, fig. 13. Material. 1 specimen from station 048- 1 (SMF 11778), 602.1 m, 70 ° 23.94 ' S, 8 ° 19.14 ' W, 12.01. 2008. Description. Specimen (Fig. 22 A) massive, rounded, about 4 cm in diameter, probably growing on bryozoans, some of these incorporated into tissue. One osculum at the top, opening into a deep inner cavity, penetrating the sponge almost to its base, with a more or less constant width. Surface porous with regularly arranged pores, covered by an epidermis spiked by long diactins, giving it a hexactinellid-like appearance. These diactins of hexactinellid origin and foreign to the sponge. Sponge quite firm, slightly compressible. Color in ethanol lightly beige. Skeleton: Skeleton irregular, poorly organized (Fig. 22 B–C). Only in parts, oxeas form rudimentary anisodictyal or anisotropic reticulations. Spicule density high. Microscleres usually occuring independently of megascleres in tissue-rich regions. Around pores, skeleton might become somewhat alveolate. Detachable epidermis irregular, containing oxeas and microscleres. Spiculation (Tab. 18): Main spicules very slightly bent oxeas (Fig. 22 D), 610–770 x 12.5–25 µm. Characteristic microscleres tylotoxas (Fig. 22 G–H), 175–258 µm in length and 6.25–10 µm in maximal width (tyle diameter). Tyle centrally arranged, toxas usually angularly bent in the middle. Tylotoxas not very abundant, but occuring regularly and most characteristic for the species. Most abundant microscleres sigmas (Fig. 22 E–F). These with wide size range, 50–290 µm by 25–120 µm. At first glance two different size classes of sigmas present, spicule measurements show occurrence of all intermediate sizes. Remarks. The holotype described by Hentschel (1914) was cylindrical, upright tube-shaped and therefore somewhat different from our new, more compactly rounded specimen. The new specimen might therefore be a juvenile one, which just started by growing sidewards and would eventually have been growing vertically. Differences in growth forms may also be induced by other parameters, such as current or different types of substrates available. The holotype as well as the new specimen show no attachment structure, but have incorporated several bryozoans; both sponges probably grew on bryozoans. Spicule sizes presented by Hentschel (1914) and Koltun (1964) are similar to those of our new specimen; the great variability in size of sigmas is present in earlier records as well. Still, our new specimen shows larger maximum values than sponges reported before. This is in accordance with our observation of the occurrence of unusually large spicules in some other species from station 048- 1, e. g. H. (G.) flagellifera . parameter SMF 11778 Hentschel (1914) Koltun (1964) Oxea length 610–703.9 – 770 (33) 632–732 632–760 diameter 12.5–22 – 25 (33) 20–25 Sigma length 50–146 – 290 (35) 16–200 16–200 max. width 25–61.9 – 120 (35) Tylotoxa length 175–220.9 – 257.5 (30) 136–224 136–224 diameter/ tyle 6.25–7.5 – 10 (30) : Published as part of Göcke, Christian & Janussen, Dorte, 2013, Demospongiae of ANT XXIV / 2 (SYSTCO I) Expedition — Antarctic Eastern Weddell Sea, pp. 28-101 in Zootaxa 3692 (1) on pages 87-89, DOI: 10.11646/zootaxa.3692.1.5, http://zenodo.org/record/249019 |
format |
Text |
author |
Göcke, Christian Janussen, Dorte |
author_facet |
Göcke, Christian Janussen, Dorte |
author_sort |
Göcke, Christian |
title |
Haliclona (Gellius) tylotoxa Hentschel 1914 |
title_short |
Haliclona (Gellius) tylotoxa Hentschel 1914 |
title_full |
Haliclona (Gellius) tylotoxa Hentschel 1914 |
title_fullStr |
Haliclona (Gellius) tylotoxa Hentschel 1914 |
title_full_unstemmed |
Haliclona (Gellius) tylotoxa Hentschel 1914 |
title_sort |
haliclona (gellius) tylotoxa hentschel 1914 |
publisher |
Zenodo |
publishDate |
2013 |
url |
https://dx.doi.org/10.5281/zenodo.6145359 https://zenodo.org/record/6145359 |
geographic |
Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Weddell Sea |
genre_facet |
Antarc* Antarctic Weddell Sea |
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Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess |
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op_doi |
https://doi.org/10.5281/zenodo.6145359 https://doi.org/10.11646/zootaxa.3692.1.5 https://doi.org/10.5281/zenodo.249041 https://doi.org/10.5281/zenodo.6145360 |
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ftdatacite:10.5281/zenodo.6145359 2023-05-15T13:37:53+02:00 Haliclona (Gellius) tylotoxa Hentschel 1914 Göcke, Christian Janussen, Dorte 2013 https://dx.doi.org/10.5281/zenodo.6145359 https://zenodo.org/record/6145359 unknown Zenodo http://zenodo.org/record/249019 http://publication.plazi.org/id/FFD6FFA8CD3388028029FF93FFE4FFE9 http://zoobank.org/136660B8-7DCC-490E-AB79-46546CC18E40 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.3692.1.5 http://zenodo.org/record/249019 http://publication.plazi.org/id/FFD6FFA8CD3388028029FF93FFE4FFE9 https://dx.doi.org/10.5281/zenodo.249041 http://zoobank.org/136660B8-7DCC-490E-AB79-46546CC18E40 https://dx.doi.org/10.5281/zenodo.6145360 https://zenodo.org/communities/biosyslit Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess CC0 Biodiversity Taxonomy Animalia Porifera Demospongiae Haplosclerida Chalinidae Haliclona Haliclona tylotoxa article-journal ScholarlyArticle Taxonomic treatment Text 2013 ftdatacite https://doi.org/10.5281/zenodo.6145359 https://doi.org/10.11646/zootaxa.3692.1.5 https://doi.org/10.5281/zenodo.249041 https://doi.org/10.5281/zenodo.6145360 2022-04-01T11:00:22Z Haliclona (Gellius) tylotoxa (Hentschel, 1914) (Fig. 22, Tab. 18) Haliclona tylotoxus (Hentschel, 1914): Koltun 1964: 102, 1976: 195. Synonymy: Gellius tylotoxus Hentschel, 1914: 131, pl. 4, fig. 14, pl. 8, fig. 13. Material. 1 specimen from station 048- 1 (SMF 11778), 602.1 m, 70 ° 23.94 ' S, 8 ° 19.14 ' W, 12.01. 2008. Description. Specimen (Fig. 22 A) massive, rounded, about 4 cm in diameter, probably growing on bryozoans, some of these incorporated into tissue. One osculum at the top, opening into a deep inner cavity, penetrating the sponge almost to its base, with a more or less constant width. Surface porous with regularly arranged pores, covered by an epidermis spiked by long diactins, giving it a hexactinellid-like appearance. These diactins of hexactinellid origin and foreign to the sponge. Sponge quite firm, slightly compressible. Color in ethanol lightly beige. Skeleton: Skeleton irregular, poorly organized (Fig. 22 B–C). Only in parts, oxeas form rudimentary anisodictyal or anisotropic reticulations. Spicule density high. Microscleres usually occuring independently of megascleres in tissue-rich regions. Around pores, skeleton might become somewhat alveolate. Detachable epidermis irregular, containing oxeas and microscleres. Spiculation (Tab. 18): Main spicules very slightly bent oxeas (Fig. 22 D), 610–770 x 12.5–25 µm. Characteristic microscleres tylotoxas (Fig. 22 G–H), 175–258 µm in length and 6.25–10 µm in maximal width (tyle diameter). Tyle centrally arranged, toxas usually angularly bent in the middle. Tylotoxas not very abundant, but occuring regularly and most characteristic for the species. Most abundant microscleres sigmas (Fig. 22 E–F). These with wide size range, 50–290 µm by 25–120 µm. At first glance two different size classes of sigmas present, spicule measurements show occurrence of all intermediate sizes. Remarks. The holotype described by Hentschel (1914) was cylindrical, upright tube-shaped and therefore somewhat different from our new, more compactly rounded specimen. The new specimen might therefore be a juvenile one, which just started by growing sidewards and would eventually have been growing vertically. Differences in growth forms may also be induced by other parameters, such as current or different types of substrates available. The holotype as well as the new specimen show no attachment structure, but have incorporated several bryozoans; both sponges probably grew on bryozoans. Spicule sizes presented by Hentschel (1914) and Koltun (1964) are similar to those of our new specimen; the great variability in size of sigmas is present in earlier records as well. Still, our new specimen shows larger maximum values than sponges reported before. This is in accordance with our observation of the occurrence of unusually large spicules in some other species from station 048- 1, e. g. H. (G.) flagellifera . parameter SMF 11778 Hentschel (1914) Koltun (1964) Oxea length 610–703.9 – 770 (33) 632–732 632–760 diameter 12.5–22 – 25 (33) 20–25 Sigma length 50–146 – 290 (35) 16–200 16–200 max. width 25–61.9 – 120 (35) Tylotoxa length 175–220.9 – 257.5 (30) 136–224 136–224 diameter/ tyle 6.25–7.5 – 10 (30) : Published as part of Göcke, Christian & Janussen, Dorte, 2013, Demospongiae of ANT XXIV / 2 (SYSTCO I) Expedition — Antarctic Eastern Weddell Sea, pp. 28-101 in Zootaxa 3692 (1) on pages 87-89, DOI: 10.11646/zootaxa.3692.1.5, http://zenodo.org/record/249019 Text Antarc* Antarctic Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic Weddell Weddell Sea |