Leucascus lobatus Rapp 2004
Leucascus lobatus Rapp, 2004 Diagnosis: Cortex composed of tripods with a fourth rudimentary actine. Skeleton of the tubes composed of triactines and tetractines with cylindrical actines. Synonymies: Leucosolenia primordialis: Brøndsted 1933: 4 (see Rapp 2004), Leucascus lobatus: Rapp 2004: 119. Typ...
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ftzenodo:oai:zenodo.org:6153184 2023-05-15T16:28:45+02:00 Leucascus lobatus Rapp 2004 Cavalcanti, Fernanda F. Rapp, Hans Tore Klautau, Michelle 2013-12-31 https://zenodo.org/record/6153184 https://doi.org/10.5281/zenodo.6153184 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/038E706DEC1E7449FF172C70C58AFA66 doi:10.11646/zootaxa.3619.3.3 http://zenodo.org/record/221852 http://publication.plazi.org/id/FFB70815EC147445FF802B45C42DFF87 doi:10.5281/zenodo.221858 http://table.plazi.org/id/DF5891F3EC187449FF172AD6C7F0FE2C http://zoobank.org/92C07D63-F2F5-4898-A7FE-4937F4D5A043 doi:10.5281/zenodo.6153183 https://zenodo.org/communities/biosyslit https://zenodo.org/record/6153184 https://doi.org/10.5281/zenodo.6153184 oai:zenodo.org:6153184 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Taxonomic revision of Leucascus Dendy, 1892 (Porifera: Calcarea) with revalidation of Ascoleucetta Dendy & Frederick, 1924 and description of three new species, pp. 275-314 in Zootaxa 3619(3) 285-287 Biodiversity Taxonomy Animalia Porifera Calcarea Clathrinida Leucascidae Leucascus Leucascus lobatus info:eu-repo/semantics/other publication-taxonomictreatment 2013 ftzenodo https://doi.org/10.5281/zenodo.615318410.11646/zootaxa.3619.3.310.5281/zenodo.22185810.5281/zenodo.6153183 2023-03-10T18:10:39Z Leucascus lobatus Rapp, 2004 Diagnosis: Cortex composed of tripods with a fourth rudimentary actine. Skeleton of the tubes composed of triactines and tetractines with cylindrical actines. Synonymies: Leucosolenia primordialis: Brøndsted 1933: 4 (see Rapp 2004), Leucascus lobatus: Rapp 2004: 119. Type material: ZMUC POR- 245 (Holotype; Kap Farvel (6007.7 ’N, 4417 ’W), Greenland; Kap Farvel Expedition; 08/08/ 1970; depth: 230 to 250 m; substratum composed of large stones). Type locality: Kap Farvel, Greenland. Description: Colour is white after fixation. The cormus is lobate and the oscula are surrounded by membrane. The surface is smooth and perforated by inhalant apertures (Figure 6 A). The tubes are tightly and regularly anastomosed. The atrial surface is smooth. Reproductive elements are present. Skeleton: The cortical membrane could be recognized only in some regions (Figure 6 B). The cortical skeleton is formed by tripods varying in size and organized in several layers. These spicules are exclusively cortical. Triactines with cylindrical actines are also present in the cortical skeleton, surrounding the inhalant apertures. The skeleton of the tubes is composed of triactines and tetractines with cylindrical actines. This last category of spicule projects the apical actine into the lumen of the tubes (Figure 6 C), but smooth tubes are also present. The atrial skeleton is composed of triactines and tetractines with cylindrical actines. Spicules (Table 4): (i) Tripods (Figure 6 D): Regular and variable in size. Actines are straight with blunt tips, but they are not stout as typical tripods. A fourth rudimentary actine is present; (ii) Triactines (Figure 6 E): Regular, except around the inhalant apertures where they are sagittal. Actines are cylindrical, straight, and with blunt or sharp tips; (iii) Tetractines (Figure 6 E): Similar to the triactines, but with an apical actine that is shorter than the basal ones and ornamented with small spines (Figure 6 F). Remarks: According to Rapp (2004), tetractines are also ... Other/Unknown Material Greenland Kap Farvel Zenodo Greenland Kap ENVELOPE(23.567,23.567,65.533,65.533) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Porifera Calcarea Clathrinida Leucascidae Leucascus Leucascus lobatus |
spellingShingle |
Biodiversity Taxonomy Animalia Porifera Calcarea Clathrinida Leucascidae Leucascus Leucascus lobatus Cavalcanti, Fernanda F. Rapp, Hans Tore Klautau, Michelle Leucascus lobatus Rapp 2004 |
topic_facet |
Biodiversity Taxonomy Animalia Porifera Calcarea Clathrinida Leucascidae Leucascus Leucascus lobatus |
description |
Leucascus lobatus Rapp, 2004 Diagnosis: Cortex composed of tripods with a fourth rudimentary actine. Skeleton of the tubes composed of triactines and tetractines with cylindrical actines. Synonymies: Leucosolenia primordialis: Brøndsted 1933: 4 (see Rapp 2004), Leucascus lobatus: Rapp 2004: 119. Type material: ZMUC POR- 245 (Holotype; Kap Farvel (6007.7 ’N, 4417 ’W), Greenland; Kap Farvel Expedition; 08/08/ 1970; depth: 230 to 250 m; substratum composed of large stones). Type locality: Kap Farvel, Greenland. Description: Colour is white after fixation. The cormus is lobate and the oscula are surrounded by membrane. The surface is smooth and perforated by inhalant apertures (Figure 6 A). The tubes are tightly and regularly anastomosed. The atrial surface is smooth. Reproductive elements are present. Skeleton: The cortical membrane could be recognized only in some regions (Figure 6 B). The cortical skeleton is formed by tripods varying in size and organized in several layers. These spicules are exclusively cortical. Triactines with cylindrical actines are also present in the cortical skeleton, surrounding the inhalant apertures. The skeleton of the tubes is composed of triactines and tetractines with cylindrical actines. This last category of spicule projects the apical actine into the lumen of the tubes (Figure 6 C), but smooth tubes are also present. The atrial skeleton is composed of triactines and tetractines with cylindrical actines. Spicules (Table 4): (i) Tripods (Figure 6 D): Regular and variable in size. Actines are straight with blunt tips, but they are not stout as typical tripods. A fourth rudimentary actine is present; (ii) Triactines (Figure 6 E): Regular, except around the inhalant apertures where they are sagittal. Actines are cylindrical, straight, and with blunt or sharp tips; (iii) Tetractines (Figure 6 E): Similar to the triactines, but with an apical actine that is shorter than the basal ones and ornamented with small spines (Figure 6 F). Remarks: According to Rapp (2004), tetractines are also ... |
format |
Other/Unknown Material |
author |
Cavalcanti, Fernanda F. Rapp, Hans Tore Klautau, Michelle |
author_facet |
Cavalcanti, Fernanda F. Rapp, Hans Tore Klautau, Michelle |
author_sort |
Cavalcanti, Fernanda F. |
title |
Leucascus lobatus Rapp 2004 |
title_short |
Leucascus lobatus Rapp 2004 |
title_full |
Leucascus lobatus Rapp 2004 |
title_fullStr |
Leucascus lobatus Rapp 2004 |
title_full_unstemmed |
Leucascus lobatus Rapp 2004 |
title_sort |
leucascus lobatus rapp 2004 |
publishDate |
2013 |
url |
https://zenodo.org/record/6153184 https://doi.org/10.5281/zenodo.6153184 |
long_lat |
ENVELOPE(23.567,23.567,65.533,65.533) |
geographic |
Greenland Kap |
geographic_facet |
Greenland Kap |
genre |
Greenland Kap Farvel |
genre_facet |
Greenland Kap Farvel |
op_source |
Taxonomic revision of Leucascus Dendy, 1892 (Porifera: Calcarea) with revalidation of Ascoleucetta Dendy & Frederick, 1924 and description of three new species, pp. 275-314 in Zootaxa 3619(3) 285-287 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/038E706DEC1E7449FF172C70C58AFA66 doi:10.11646/zootaxa.3619.3.3 http://zenodo.org/record/221852 http://publication.plazi.org/id/FFB70815EC147445FF802B45C42DFF87 doi:10.5281/zenodo.221858 http://table.plazi.org/id/DF5891F3EC187449FF172AD6C7F0FE2C http://zoobank.org/92C07D63-F2F5-4898-A7FE-4937F4D5A043 doi:10.5281/zenodo.6153183 https://zenodo.org/communities/biosyslit https://zenodo.org/record/6153184 https://doi.org/10.5281/zenodo.6153184 oai:zenodo.org:6153184 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.615318410.11646/zootaxa.3619.3.310.5281/zenodo.22185810.5281/zenodo.6153183 |
_version_ |
1766018427204403200 |