Eubonellia noratlanticum DattaGupta 1981
Eubonellia noratlanticum DattaGupta, 1981 (Fig. 2 A-D) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 2, Discovery 226, stn 13078#11, 48°53.19’N, 16°35.98’W, 4844 m, 12.III.1997, 2 ♀♀. DESCRIPTION Colour of proboscis and trunk of preserved specimens is light pink. Dista...
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2006
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Online Access: | https://dx.doi.org/10.5281/zenodo.4893183 https://zenodo.org/record/4893183 |
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ftdatacite:10.5281/zenodo.4893183 |
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institution |
Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Eubonellia Eubonellia noratlanticum |
spellingShingle |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Eubonellia Eubonellia noratlanticum Biseswar, Ramlall Eubonellia noratlanticum DattaGupta 1981 |
topic_facet |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Eubonellia Eubonellia noratlanticum |
description |
Eubonellia noratlanticum DattaGupta, 1981 (Fig. 2 A-D) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 2, Discovery 226, stn 13078#11, 48°53.19’N, 16°35.98’W, 4844 m, 12.III.1997, 2 ♀♀. DESCRIPTION Colour of proboscis and trunk of preserved specimens is light pink. Distal tip of proboscis of larger specimen is damaged. In smaller specimen only basal stump of proboscis is still attached to trunk. Proximally, lateral margins of proboscis curl inwards giving it a tubular appearance (Fig. 2A). Trunk of larger specimen measures 66 mm in length and 12 mm across broadest part. Corresponding measurements of smaller specimen are 40 and 10 mm. Integument is thick and opaque at extremities of trunk where longitudinal muscles are arranged in bands, but thin and transparent in middle region of trunk. To unaided eye integument appears smooth but under magnification elongated papillae are visible in contracted regions of trunk, aligned roughly in transverse rows. Proboscis and trunk covered with elongated finger-like outgrowths, occurring either singly or in clusters (Fig. 2A). Genital pore is a transverse slit located about 8 mm away from anterior end of trunk (Fig. 2A). Gonoduct single, sac-like, located on right side of nerve cord (Fig. 2B). Gonostome terminal, resembling short flared vase on a long stalk (Fig. 2B). Alimentary canal long and coiled forming several loops. Contents of gut fine sand not moulded into faecal pellets. Dorsal and neurointestinal vessels arise from wall of foregut without ring sinus (Fig. 2C). Dorsal vessel prominent, passing anteriorly dorsal to oesophagus and pharynx and entering proboscis. Neurointestinal vessel is single throughout (Fig. 2C). Anal vesicles small and branching (Fig. 2D). REMARKS The genus Eubonellia is distinguished by the presence of a bifurcate proboscis, absence of ventral setae, and a single gonoduct (right) with a distally located gonostome. The species Eubonellia noratlanticum is based on specimens from the North Atlantic collected at a depth of 3800 m. The present specimens closely approach the description provided by DattaGupta (1981) except for minor differences in the papillae and anal vesicles. The elongated outgrowths on the proboscis and trunk in the present specimens are probably epizoans. Some epizoans have been reported to occur on soft-skinned animals such as polychaete worms. Eubonellia noratlanticum appears to be close to E.valida , described by Fisher (1946). According to DattaGupta, the proboscis of E.valida is long, broad and flat and distally ends in two narrow limbs. : Published as part of Biseswar, Ramlall, 2006, Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28 (4) on page 858, DOI: 10.5281/zenodo.4689879 : {"references": ["DATTAGUPTA A. K. 1981. - Atlantic echiurans. Part 1. Report on twenty-two species of deep-sea echiurans of the North and the South Atlantic Oceans. Bulletin du Museum national d'Histoire naturelle Paris, 4 e ser., sect. A, 3 (2): 353 - 378.", "FISHER W. K. 1946. - Echiuroid worms of the North Pacific Ocean. Proceedings of the United States National Museum 96: 215 - 292."]} |
format |
Text |
author |
Biseswar, Ramlall |
author_facet |
Biseswar, Ramlall |
author_sort |
Biseswar, Ramlall |
title |
Eubonellia noratlanticum DattaGupta 1981 |
title_short |
Eubonellia noratlanticum DattaGupta 1981 |
title_full |
Eubonellia noratlanticum DattaGupta 1981 |
title_fullStr |
Eubonellia noratlanticum DattaGupta 1981 |
title_full_unstemmed |
Eubonellia noratlanticum DattaGupta 1981 |
title_sort |
eubonellia noratlanticum dattagupta 1981 |
publisher |
Zenodo |
publishDate |
2006 |
url |
https://dx.doi.org/10.5281/zenodo.4893183 https://zenodo.org/record/4893183 |
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ENVELOPE(-63.071,-63.071,-70.797,-70.797) ENVELOPE(-153.167,-153.167,-86.183,-86.183) |
geographic |
Pacific Curl Stump |
geographic_facet |
Pacific Curl Stump |
genre |
North Atlantic North East Atlantic |
genre_facet |
North Atlantic North East Atlantic |
op_relation |
http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.4689879 http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 https://dx.doi.org/10.5281/zenodo.4689883 https://dx.doi.org/10.5281/zenodo.4893184 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.5281/zenodo.4893183 https://doi.org/10.5281/zenodo.4689879 https://doi.org/10.5281/zenodo.4689883 https://doi.org/10.5281/zenodo.4893184 |
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1766137251524247552 |
spelling |
ftdatacite:10.5281/zenodo.4893183 2023-05-15T17:37:21+02:00 Eubonellia noratlanticum DattaGupta 1981 Biseswar, Ramlall 2006 https://dx.doi.org/10.5281/zenodo.4893183 https://zenodo.org/record/4893183 unknown Zenodo http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.4689879 http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 https://dx.doi.org/10.5281/zenodo.4689883 https://dx.doi.org/10.5281/zenodo.4893184 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 Echiura Polychaeta Echiuroidea Bonelliidae Eubonellia Eubonellia noratlanticum Text Taxonomic treatment article-journal ScholarlyArticle 2006 ftdatacite https://doi.org/10.5281/zenodo.4893183 https://doi.org/10.5281/zenodo.4689879 https://doi.org/10.5281/zenodo.4689883 https://doi.org/10.5281/zenodo.4893184 2021-11-05T12:55:41Z Eubonellia noratlanticum DattaGupta, 1981 (Fig. 2 A-D) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 2, Discovery 226, stn 13078#11, 48°53.19’N, 16°35.98’W, 4844 m, 12.III.1997, 2 ♀♀. DESCRIPTION Colour of proboscis and trunk of preserved specimens is light pink. Distal tip of proboscis of larger specimen is damaged. In smaller specimen only basal stump of proboscis is still attached to trunk. Proximally, lateral margins of proboscis curl inwards giving it a tubular appearance (Fig. 2A). Trunk of larger specimen measures 66 mm in length and 12 mm across broadest part. Corresponding measurements of smaller specimen are 40 and 10 mm. Integument is thick and opaque at extremities of trunk where longitudinal muscles are arranged in bands, but thin and transparent in middle region of trunk. To unaided eye integument appears smooth but under magnification elongated papillae are visible in contracted regions of trunk, aligned roughly in transverse rows. Proboscis and trunk covered with elongated finger-like outgrowths, occurring either singly or in clusters (Fig. 2A). Genital pore is a transverse slit located about 8 mm away from anterior end of trunk (Fig. 2A). Gonoduct single, sac-like, located on right side of nerve cord (Fig. 2B). Gonostome terminal, resembling short flared vase on a long stalk (Fig. 2B). Alimentary canal long and coiled forming several loops. Contents of gut fine sand not moulded into faecal pellets. Dorsal and neurointestinal vessels arise from wall of foregut without ring sinus (Fig. 2C). Dorsal vessel prominent, passing anteriorly dorsal to oesophagus and pharynx and entering proboscis. Neurointestinal vessel is single throughout (Fig. 2C). Anal vesicles small and branching (Fig. 2D). REMARKS The genus Eubonellia is distinguished by the presence of a bifurcate proboscis, absence of ventral setae, and a single gonoduct (right) with a distally located gonostome. The species Eubonellia noratlanticum is based on specimens from the North Atlantic collected at a depth of 3800 m. The present specimens closely approach the description provided by DattaGupta (1981) except for minor differences in the papillae and anal vesicles. The elongated outgrowths on the proboscis and trunk in the present specimens are probably epizoans. Some epizoans have been reported to occur on soft-skinned animals such as polychaete worms. Eubonellia noratlanticum appears to be close to E.valida , described by Fisher (1946). According to DattaGupta, the proboscis of E.valida is long, broad and flat and distally ends in two narrow limbs. : Published as part of Biseswar, Ramlall, 2006, Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28 (4) on page 858, DOI: 10.5281/zenodo.4689879 : {"references": ["DATTAGUPTA A. K. 1981. - Atlantic echiurans. Part 1. Report on twenty-two species of deep-sea echiurans of the North and the South Atlantic Oceans. Bulletin du Museum national d'Histoire naturelle Paris, 4 e ser., sect. A, 3 (2): 353 - 378.", "FISHER W. K. 1946. - Echiuroid worms of the North Pacific Ocean. Proceedings of the United States National Museum 96: 215 - 292."]} Text North Atlantic North East Atlantic DataCite Metadata Store (German National Library of Science and Technology) Pacific Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Stump ENVELOPE(-153.167,-153.167,-86.183,-86.183) |