Polysyncraton trivolutum Millar 1960
Polysyncraton trivolutum (Millar, 1960) Fig. 3 C,D,G References and synonymy: Polysyncraton trivolutum Millar (1960) p. 58; Monniot & Monniot (1983) p. 43; Monniot et al. (2011) p. 10. Localities: 5 S. This species forms crusts several cm across and 4–5 mm thick. The colour is white with a brown...
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ftdatacite:10.5281/zenodo.5630305 2023-05-15T13:38:19+02:00 Polysyncraton trivolutum Millar 1960 Turon, Xavier Cañete, Juan I. Sellanes, Javier Rocha, Rosana M. López-Legentil, Susanna 2016 https://dx.doi.org/10.5281/zenodo.5630305 https://zenodo.org/record/5630305 unknown Zenodo http://zenodo.org/record/267667 http://publication.plazi.org/id/FFF1F62CFF99FFB3FFE0B677FFED3076 http://zoobank.org/ECC66298-6885-47B3-B797-8D30AA05927F https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4093.2.1 http://zenodo.org/record/267667 http://publication.plazi.org/id/FFF1F62CFF99FFB3FFE0B677FFED3076 https://dx.doi.org/10.5281/zenodo.267670 http://zoobank.org/ECC66298-6885-47B3-B797-8D30AA05927F https://dx.doi.org/10.5281/zenodo.5630306 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Polysyncraton Polysyncraton trivolutum Taxonomic treatment article-journal Text ScholarlyArticle 2016 ftdatacite https://doi.org/10.5281/zenodo.5630305 https://doi.org/10.11646/zootaxa.4093.2.1 https://doi.org/10.5281/zenodo.267670 https://doi.org/10.5281/zenodo.5630306 2022-02-08T12:23:07Z Polysyncraton trivolutum (Millar, 1960) Fig. 3 C,D,G References and synonymy: Polysyncraton trivolutum Millar (1960) p. 58; Monniot & Monniot (1983) p. 43; Monniot et al. (2011) p. 10. Localities: 5 S. This species forms crusts several cm across and 4–5 mm thick. The colour is white with a brownish tinge. The spicules are dense, in general less than 25 µm in diameter (occasionally reaching 40). They are stellate with short rays, up to ten in optical section. The general cavity of the colony is at the thoracic level, but it extends between groups of abdomina. The thoraces reach 2 mm in length. They have an atrial languet that ranges from very small and simple to long and with several points. Cup-like thoracic organs are prominent between the second and third row of stigmata. No retractor muscle is present. The abdomina are smaller than the thoraces, and are in general in male phase. They have three testicular lobes surrounded by a sperm duct describing four coils. Some zooids also have a few developing oocytes adjacent to the testes. Remarks. the presence of atrial languet, absence of retractor muscle, structure of thoracic organs and gonads allows the assignment of our specimens to this species. However, P. trivolutum is highly variable and may comprise a group of closely related species (Monniot & Monniot 1983). This taxon is common in Antarctic and subantarctic regions (Monniot & Monniot 1983, Monniot et al. 2011, Schories et al. 2015). : Published as part of Turon, Xavier, Cañete, Juan I., Sellanes, Javier, Rocha, Rosana M. & López-Legentil, Susanna, 2016, Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile, pp. 151-180 in Zootaxa 4093 (2) on page 158, DOI: 10.11646/zootaxa.4093.2.1, http://zenodo.org/record/267667 Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Polysyncraton Polysyncraton trivolutum |
spellingShingle |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Polysyncraton Polysyncraton trivolutum Turon, Xavier Cañete, Juan I. Sellanes, Javier Rocha, Rosana M. López-Legentil, Susanna Polysyncraton trivolutum Millar 1960 |
topic_facet |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Polysyncraton Polysyncraton trivolutum |
description |
Polysyncraton trivolutum (Millar, 1960) Fig. 3 C,D,G References and synonymy: Polysyncraton trivolutum Millar (1960) p. 58; Monniot & Monniot (1983) p. 43; Monniot et al. (2011) p. 10. Localities: 5 S. This species forms crusts several cm across and 4–5 mm thick. The colour is white with a brownish tinge. The spicules are dense, in general less than 25 µm in diameter (occasionally reaching 40). They are stellate with short rays, up to ten in optical section. The general cavity of the colony is at the thoracic level, but it extends between groups of abdomina. The thoraces reach 2 mm in length. They have an atrial languet that ranges from very small and simple to long and with several points. Cup-like thoracic organs are prominent between the second and third row of stigmata. No retractor muscle is present. The abdomina are smaller than the thoraces, and are in general in male phase. They have three testicular lobes surrounded by a sperm duct describing four coils. Some zooids also have a few developing oocytes adjacent to the testes. Remarks. the presence of atrial languet, absence of retractor muscle, structure of thoracic organs and gonads allows the assignment of our specimens to this species. However, P. trivolutum is highly variable and may comprise a group of closely related species (Monniot & Monniot 1983). This taxon is common in Antarctic and subantarctic regions (Monniot & Monniot 1983, Monniot et al. 2011, Schories et al. 2015). : Published as part of Turon, Xavier, Cañete, Juan I., Sellanes, Javier, Rocha, Rosana M. & López-Legentil, Susanna, 2016, Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile, pp. 151-180 in Zootaxa 4093 (2) on page 158, DOI: 10.11646/zootaxa.4093.2.1, http://zenodo.org/record/267667 |
format |
Text |
author |
Turon, Xavier Cañete, Juan I. Sellanes, Javier Rocha, Rosana M. López-Legentil, Susanna |
author_facet |
Turon, Xavier Cañete, Juan I. Sellanes, Javier Rocha, Rosana M. López-Legentil, Susanna |
author_sort |
Turon, Xavier |
title |
Polysyncraton trivolutum Millar 1960 |
title_short |
Polysyncraton trivolutum Millar 1960 |
title_full |
Polysyncraton trivolutum Millar 1960 |
title_fullStr |
Polysyncraton trivolutum Millar 1960 |
title_full_unstemmed |
Polysyncraton trivolutum Millar 1960 |
title_sort |
polysyncraton trivolutum millar 1960 |
publisher |
Zenodo |
publishDate |
2016 |
url |
https://dx.doi.org/10.5281/zenodo.5630305 https://zenodo.org/record/5630305 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://zenodo.org/record/267667 http://publication.plazi.org/id/FFF1F62CFF99FFB3FFE0B677FFED3076 http://zoobank.org/ECC66298-6885-47B3-B797-8D30AA05927F https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4093.2.1 http://zenodo.org/record/267667 http://publication.plazi.org/id/FFF1F62CFF99FFB3FFE0B677FFED3076 https://dx.doi.org/10.5281/zenodo.267670 http://zoobank.org/ECC66298-6885-47B3-B797-8D30AA05927F https://dx.doi.org/10.5281/zenodo.5630306 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.5630305 https://doi.org/10.11646/zootaxa.4093.2.1 https://doi.org/10.5281/zenodo.267670 https://doi.org/10.5281/zenodo.5630306 |
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