Alcyonium grandis Casas et al. 1997
Alcyonium grandis Casas et al ., 1997 (Figs. 1 b–c, 5, 11) Alcyonium grandis Casas et al ., 1997: 304, figs. 5–7. Material : RMNH Coel. 34936, fragment of colony, Chile, Islas Diego Ramírez/Drake Passage (approx. 56°30' S; 68°45' W), depth 1800 m, coll. Claudio Vera, 2001; ZSM 20061187, fr...
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ftzenodo:oai:zenodo.org:6237495 2024-09-15T18:04:01+00:00 Alcyonium grandis Casas et al. 1997 Ofwegen, Van 2007-12-31 https://doi.org/10.5281/zenodo.6237495 http://treatment.plazi.org/id/7974B36EFFAC0948B1FAB663C623E948 unknown Zenodo https://doi.org/10.5281/zenodo.178819 http://publication.plazi.org/id/854DCB16FFAA094EB16DB414C379EE7F https://sibils.text-analytics.ch/search/collections/plazi/7974B36EFFAC0948B1FAB663C623E948 https://doi.org/10.5281/zenodo.178820 https://doi.org/10.5281/zenodo.178824 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.6237494 https://doi.org/10.5281/zenodo.6237495 oai:zenodo.org:6237495 http://treatment.plazi.org/id/7974B36EFFAC0948B1FAB663C623E948 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode The genus Alcyonium (Octocorallia: Alcyonacea: Alcyoniidae) in Chile, pp. 1-19 in Zootaxa, 1607, 7, (2007-12-31) Biodiversity Taxonomy Animalia Cnidaria Anthozoa Alcyonacea Alcyoniidae Alcyonium Alcyonium grandis info:eu-repo/semantics/other 2007 ftzenodo https://doi.org/10.5281/zenodo.623749510.5281/zenodo.17881910.5281/zenodo.17882010.5281/zenodo.17882410.5281/zenodo.6237494 2024-07-25T15:56:28Z Alcyonium grandis Casas et al ., 1997 (Figs. 1 b–c, 5, 11) Alcyonium grandis Casas et al ., 1997: 304, figs. 5–7. Material : RMNH Coel. 34936, fragment of colony, Chile, Islas Diego Ramírez/Drake Passage (approx. 56°30' S; 68°45' W), depth 1800 m, coll. Claudio Vera, 2001; ZSM 20061187, fragment of colony, South Georgia, depth 1200 m, coll. Eugenio Olivares, September 2003. Description of RMNH Coel. 34936. The colony is membranous, about 1.5 cm long and 1cm wide (Fig. 1 c). Polyps are evenly distributed over the colony. Calyces are dome shaped and all polyps are partly retracted with tentacles withdrawn. Anthocodiae have a collaret of a few irregularly arranged rows of spindles; the points have many spindles. In order to preserve as much as possible of the fragment no microscope slides were made for drawing the anthocodial sclerite arrangement. The collaret spindles are up to 0.55 mm long, with spines and prominent simple tubercles (Fig. 5 a–b). Points have spindles similar to those of the collaret, with clubs present distally, up to 0.30 mm long (Fig. 5 c). The tentacles are without sclerites. The surface layer of calyces and membrane has exclusively capstans, 0.10–0.15 mm long (Fig. 5 d, h). The interior has tuberculated spindles (Fig. 5 f–g, i), the longest present in the calyces, up to 0.40 mm long. Some of these spindles are club-like (Fig. 5 e), but real clubs were not observed. Colour . The preserved colony is white, and all sclerites are colourless. Habitat, distribution and abundance. The species occurs in South Georgia, and was collected only once in Chile, at 1800 m depth. Remarks. ZSM 20061187 is also only a fragment, but a large part of that colony has been photographed, showing more of its colony shape (Fig. 1 b). The species was originally described from off Shag Rocks and South Georgia, at 152–335 m depth (Casas et al ., 1997: 308). All six colonies of the type series showed colonies with numerous lobes, the largest colony, the holotype, even reaching 16.5 cm in height. It is remarkable that the ... Other/Unknown Material Drake Passage Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Cnidaria Anthozoa Alcyonacea Alcyoniidae Alcyonium Alcyonium grandis |
spellingShingle |
Biodiversity Taxonomy Animalia Cnidaria Anthozoa Alcyonacea Alcyoniidae Alcyonium Alcyonium grandis Ofwegen, Van Alcyonium grandis Casas et al. 1997 |
topic_facet |
Biodiversity Taxonomy Animalia Cnidaria Anthozoa Alcyonacea Alcyoniidae Alcyonium Alcyonium grandis |
description |
Alcyonium grandis Casas et al ., 1997 (Figs. 1 b–c, 5, 11) Alcyonium grandis Casas et al ., 1997: 304, figs. 5–7. Material : RMNH Coel. 34936, fragment of colony, Chile, Islas Diego Ramírez/Drake Passage (approx. 56°30' S; 68°45' W), depth 1800 m, coll. Claudio Vera, 2001; ZSM 20061187, fragment of colony, South Georgia, depth 1200 m, coll. Eugenio Olivares, September 2003. Description of RMNH Coel. 34936. The colony is membranous, about 1.5 cm long and 1cm wide (Fig. 1 c). Polyps are evenly distributed over the colony. Calyces are dome shaped and all polyps are partly retracted with tentacles withdrawn. Anthocodiae have a collaret of a few irregularly arranged rows of spindles; the points have many spindles. In order to preserve as much as possible of the fragment no microscope slides were made for drawing the anthocodial sclerite arrangement. The collaret spindles are up to 0.55 mm long, with spines and prominent simple tubercles (Fig. 5 a–b). Points have spindles similar to those of the collaret, with clubs present distally, up to 0.30 mm long (Fig. 5 c). The tentacles are without sclerites. The surface layer of calyces and membrane has exclusively capstans, 0.10–0.15 mm long (Fig. 5 d, h). The interior has tuberculated spindles (Fig. 5 f–g, i), the longest present in the calyces, up to 0.40 mm long. Some of these spindles are club-like (Fig. 5 e), but real clubs were not observed. Colour . The preserved colony is white, and all sclerites are colourless. Habitat, distribution and abundance. The species occurs in South Georgia, and was collected only once in Chile, at 1800 m depth. Remarks. ZSM 20061187 is also only a fragment, but a large part of that colony has been photographed, showing more of its colony shape (Fig. 1 b). The species was originally described from off Shag Rocks and South Georgia, at 152–335 m depth (Casas et al ., 1997: 308). All six colonies of the type series showed colonies with numerous lobes, the largest colony, the holotype, even reaching 16.5 cm in height. It is remarkable that the ... |
format |
Other/Unknown Material |
author |
Ofwegen, Van |
author_facet |
Ofwegen, Van |
author_sort |
Ofwegen, Van |
title |
Alcyonium grandis Casas et al. 1997 |
title_short |
Alcyonium grandis Casas et al. 1997 |
title_full |
Alcyonium grandis Casas et al. 1997 |
title_fullStr |
Alcyonium grandis Casas et al. 1997 |
title_full_unstemmed |
Alcyonium grandis Casas et al. 1997 |
title_sort |
alcyonium grandis casas et al. 1997 |
publisher |
Zenodo |
publishDate |
2007 |
url |
https://doi.org/10.5281/zenodo.6237495 http://treatment.plazi.org/id/7974B36EFFAC0948B1FAB663C623E948 |
genre |
Drake Passage |
genre_facet |
Drake Passage |
op_source |
The genus Alcyonium (Octocorallia: Alcyonacea: Alcyoniidae) in Chile, pp. 1-19 in Zootaxa, 1607, 7, (2007-12-31) |
op_relation |
https://doi.org/10.5281/zenodo.178819 http://publication.plazi.org/id/854DCB16FFAA094EB16DB414C379EE7F https://sibils.text-analytics.ch/search/collections/plazi/7974B36EFFAC0948B1FAB663C623E948 https://doi.org/10.5281/zenodo.178820 https://doi.org/10.5281/zenodo.178824 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.6237494 https://doi.org/10.5281/zenodo.6237495 oai:zenodo.org:6237495 http://treatment.plazi.org/id/7974B36EFFAC0948B1FAB663C623E948 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.623749510.5281/zenodo.17881910.5281/zenodo.17882010.5281/zenodo.17882410.5281/zenodo.6237494 |
_version_ |
1810441498585464832 |