Phascolion (Phascolion) strombus Montagu
Phascolion ( Phascolion ) strombus (Montagu) Sipunculus strombus Montagu, 1804: 74 –76. Type locality : Atlantic coast of northern Europe. Remarks : The 10 specimens are 9–20 mm long and bear welldeveloped tentacles and hooks, and in most cases distinct U or Vshaped holdfast papillae towards the...
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ftzenodo:oai:zenodo.org:6271328 2024-09-15T18:24:27+00:00 Phascolion (Phascolion) strombus Montagu Cutler, Edward B. Schulze, Anja Dean, Harlan K. 2004-12-31 https://doi.org/10.5281/zenodo.6271328 http://treatment.plazi.org/id/020087E442480B695F4DFEAEFDD9F952 unknown Zenodo https://doi.org/10.5281/zenodo.158002 http://publication.plazi.org/id/FE39FF9C42410B605E45FFB2FF9AFFA1 https://sibils.text-analytics.ch/search/collections/plazi/020087E442480B695F4DFEAEFDD9F952 https://www.gbif.org/species/119602068 https://www.checklistbank.org/dataset/41768/taxon/020087E442480B695F4DFEAEFDD9F952.taxon https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.6271327 https://doi.org/10.5281/zenodo.6271328 oai:zenodo.org:6271328 http://treatment.plazi.org/id/020087E442480B695F4DFEAEFDD9F952 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Zealand species, pp. 1-19 in Zootaxa, 525, 10, (2004-12-31) Biodiversity Taxonomy Animalia Sipuncula Sipunculidea Golfingiiformes Phascoliidae Phascolion Phascolion strombus info:eu-repo/semantics/other 2004 ftzenodo https://doi.org/10.5281/zenodo.627132810.5281/zenodo.15800210.5281/zenodo.6271327 2024-07-26T19:17:27Z Phascolion ( Phascolion ) strombus (Montagu) Sipunculus strombus Montagu, 1804: 74 –76. Type locality : Atlantic coast of northern Europe. Remarks : The 10 specimens are 9–20 mm long and bear welldeveloped tentacles and hooks, and in most cases distinct U or Vshaped holdfast papillae towards the posterior end of the trunk. Edmonds (1980) erected a new species from Australia that he called Phascolion cronullae , but Cutler & Cutler (1985) demoted this to the status of a subspecies of P. strombus , and this was maintained in Cutler (1994). The distinction between these two geographically isolated populations was based on: (a) Relative size of the two retractor muscles and their point of origin. In the nominate form the ventral is much smaller, commonly 10–20% the diameter of the dorsal, but may be up to 35% of the size of the dorsal and have their origins at different anterior/posterior levels. In the Australian form they are more similar in size with the ventral 50–75 % the size of the dorsal, both originating at nearly the same level near the posterior end of the trunk. (b) Anterior papillae around the base of the introvert. In both populations there is a significant array of large dark mammilate or columnar papillae. The nominate form is alleged to have a single nipplelike tip, while the Australian form has 1–4 tips, around 25% having more than one. We now conclude that these character states are not taxonomically useful or fixed and that there is more variation within this widespread and eurytopic species than previously acknowledged. In this sample, the ventral retractors ranged from 20– 66% of the size of the dorsal muscle and a few multitipped papillae could be found on most, but not all, of these. Since many had been removed from gastropod shells, the posterior end of the trunk was not always present, making precise observations about muscle origins impossible. Distribution : Very common and eurytopic in the North Atlantic and Arctic oceans, most numerous between 200 and 2000 m. It is also found ... Other/Unknown Material North Atlantic Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Sipuncula Sipunculidea Golfingiiformes Phascoliidae Phascolion Phascolion strombus |
spellingShingle |
Biodiversity Taxonomy Animalia Sipuncula Sipunculidea Golfingiiformes Phascoliidae Phascolion Phascolion strombus Cutler, Edward B. Schulze, Anja Dean, Harlan K. Phascolion (Phascolion) strombus Montagu |
topic_facet |
Biodiversity Taxonomy Animalia Sipuncula Sipunculidea Golfingiiformes Phascoliidae Phascolion Phascolion strombus |
description |
Phascolion ( Phascolion ) strombus (Montagu) Sipunculus strombus Montagu, 1804: 74 –76. Type locality : Atlantic coast of northern Europe. Remarks : The 10 specimens are 9–20 mm long and bear welldeveloped tentacles and hooks, and in most cases distinct U or Vshaped holdfast papillae towards the posterior end of the trunk. Edmonds (1980) erected a new species from Australia that he called Phascolion cronullae , but Cutler & Cutler (1985) demoted this to the status of a subspecies of P. strombus , and this was maintained in Cutler (1994). The distinction between these two geographically isolated populations was based on: (a) Relative size of the two retractor muscles and their point of origin. In the nominate form the ventral is much smaller, commonly 10–20% the diameter of the dorsal, but may be up to 35% of the size of the dorsal and have their origins at different anterior/posterior levels. In the Australian form they are more similar in size with the ventral 50–75 % the size of the dorsal, both originating at nearly the same level near the posterior end of the trunk. (b) Anterior papillae around the base of the introvert. In both populations there is a significant array of large dark mammilate or columnar papillae. The nominate form is alleged to have a single nipplelike tip, while the Australian form has 1–4 tips, around 25% having more than one. We now conclude that these character states are not taxonomically useful or fixed and that there is more variation within this widespread and eurytopic species than previously acknowledged. In this sample, the ventral retractors ranged from 20– 66% of the size of the dorsal muscle and a few multitipped papillae could be found on most, but not all, of these. Since many had been removed from gastropod shells, the posterior end of the trunk was not always present, making precise observations about muscle origins impossible. Distribution : Very common and eurytopic in the North Atlantic and Arctic oceans, most numerous between 200 and 2000 m. It is also found ... |
format |
Other/Unknown Material |
author |
Cutler, Edward B. Schulze, Anja Dean, Harlan K. |
author_facet |
Cutler, Edward B. Schulze, Anja Dean, Harlan K. |
author_sort |
Cutler, Edward B. |
title |
Phascolion (Phascolion) strombus Montagu |
title_short |
Phascolion (Phascolion) strombus Montagu |
title_full |
Phascolion (Phascolion) strombus Montagu |
title_fullStr |
Phascolion (Phascolion) strombus Montagu |
title_full_unstemmed |
Phascolion (Phascolion) strombus Montagu |
title_sort |
phascolion (phascolion) strombus montagu |
publisher |
Zenodo |
publishDate |
2004 |
url |
https://doi.org/10.5281/zenodo.6271328 http://treatment.plazi.org/id/020087E442480B695F4DFEAEFDD9F952 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Zealand species, pp. 1-19 in Zootaxa, 525, 10, (2004-12-31) |
op_relation |
https://doi.org/10.5281/zenodo.158002 http://publication.plazi.org/id/FE39FF9C42410B605E45FFB2FF9AFFA1 https://sibils.text-analytics.ch/search/collections/plazi/020087E442480B695F4DFEAEFDD9F952 https://www.gbif.org/species/119602068 https://www.checklistbank.org/dataset/41768/taxon/020087E442480B695F4DFEAEFDD9F952.taxon https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.6271327 https://doi.org/10.5281/zenodo.6271328 oai:zenodo.org:6271328 http://treatment.plazi.org/id/020087E442480B695F4DFEAEFDD9F952 |
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.627132810.5281/zenodo.15800210.5281/zenodo.6271327 |
_version_ |
1810464804306944000 |