Jakobia similaris DattaGupta 1981
Jakobia similaris DattaGupta, 1981 (Fig. 1C, D) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 5, Discovery 231, stn 13368#53, 48°49.98’N, 16°33.53’W, 4842 m, 19.III.1998, 1 ♀. DESCRIPTION Colour of preserved specimen is grey. Only basal stump of proboscis is still attached to trunk, rest is...
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ftzenodo:oai:zenodo.org:4893182 2023-06-06T11:57:29+02:00 Jakobia similaris DattaGupta 1981 Biseswar, Ramlall 2006-12-31 https://zenodo.org/record/4893182 https://doi.org/10.5281/zenodo.4893182 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03F53669FFE4FFFDFD50BC6C2209C29C doi:10.5281/zenodo.4689879 http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 doi:10.5281/zenodo.4689881 doi:10.5281/zenodo.4893181 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4893182 https://doi.org/10.5281/zenodo.4893182 oai:zenodo.org:4893182 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28(4) 855-856 Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Jakobia Jakobia similaris info:eu-repo/semantics/other publication-taxonomictreatment 2006 ftzenodo https://doi.org/10.5281/zenodo.489318210.5281/zenodo.468987910.5281/zenodo.468988110.5281/zenodo.4893181 2023-04-13T21:11:28Z Jakobia similaris DattaGupta, 1981 (Fig. 1C, D) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 5, Discovery 231, stn 13368#53, 48°49.98’N, 16°33.53’W, 4842 m, 19.III.1998, 1 ♀. DESCRIPTION Colour of preserved specimen is grey. Only basal stump of proboscis is still attached to trunk, rest is missing.Mouth opens on round muscular projection (Fig. 1C). Anterior half of trunk is considerably distended, posterior half is narrow about 5 mm in diameter. Trunk is 53 mm long and 10 mm across broadest part. Integument is thin and transparent. Papillae microscopic at anterior end, rest of trunk is smooth. Gonopore is located a few millimetres away from anterior tip of trunk (Fig. 1C). Ventral setae absent. Internally, single gonoduct is located on right side of nerve cord. Gonoduct consists of two sharply bent sections with gonostome directed anteriorly (Fig. 1D). Neurointestinal vessel is single throughout. Segment of gut between mouth and point of attachment of neurointestinal vessel is very long. Cloacal chamber is thick and bulbous. Anal vesicles missing, probably damaged. REMARKS The specimen could be easily recognised as a species of the genus Jakobia by the nature of the gonoduct which consists of two sharply bent sections. The species J.similaris was described originally by Datta- Gupta (1981) from a single specimen collected in the North Atlantic at a depth of 3000 m. According to this author, the proboscis is long and flat with a disc-like tip and the anal vesicles are branched. Despite significant differences in the dermal papillae and the structure of the gonoduct, the present specimen has been placed in J. similaris. Additional material in the future from that region might reveal that the specimen on hand is new to science. 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 pages 855-856, DOI:10.5281/zenodo.4689879 Other/Unknown Material North Atlantic North East Atlantic Zenodo Stump ENVELOPE(-153.167,-153.167,-86.183,-86.183) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Jakobia Jakobia similaris |
spellingShingle |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Jakobia Jakobia similaris Biseswar, Ramlall Jakobia similaris DattaGupta 1981 |
topic_facet |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Jakobia Jakobia similaris |
description |
Jakobia similaris DattaGupta, 1981 (Fig. 1C, D) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 5, Discovery 231, stn 13368#53, 48°49.98’N, 16°33.53’W, 4842 m, 19.III.1998, 1 ♀. DESCRIPTION Colour of preserved specimen is grey. Only basal stump of proboscis is still attached to trunk, rest is missing.Mouth opens on round muscular projection (Fig. 1C). Anterior half of trunk is considerably distended, posterior half is narrow about 5 mm in diameter. Trunk is 53 mm long and 10 mm across broadest part. Integument is thin and transparent. Papillae microscopic at anterior end, rest of trunk is smooth. Gonopore is located a few millimetres away from anterior tip of trunk (Fig. 1C). Ventral setae absent. Internally, single gonoduct is located on right side of nerve cord. Gonoduct consists of two sharply bent sections with gonostome directed anteriorly (Fig. 1D). Neurointestinal vessel is single throughout. Segment of gut between mouth and point of attachment of neurointestinal vessel is very long. Cloacal chamber is thick and bulbous. Anal vesicles missing, probably damaged. REMARKS The specimen could be easily recognised as a species of the genus Jakobia by the nature of the gonoduct which consists of two sharply bent sections. The species J.similaris was described originally by Datta- Gupta (1981) from a single specimen collected in the North Atlantic at a depth of 3000 m. According to this author, the proboscis is long and flat with a disc-like tip and the anal vesicles are branched. Despite significant differences in the dermal papillae and the structure of the gonoduct, the present specimen has been placed in J. similaris. Additional material in the future from that region might reveal that the specimen on hand is new to science. 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 pages 855-856, DOI:10.5281/zenodo.4689879 |
format |
Other/Unknown Material |
author |
Biseswar, Ramlall |
author_facet |
Biseswar, Ramlall |
author_sort |
Biseswar, Ramlall |
title |
Jakobia similaris DattaGupta 1981 |
title_short |
Jakobia similaris DattaGupta 1981 |
title_full |
Jakobia similaris DattaGupta 1981 |
title_fullStr |
Jakobia similaris DattaGupta 1981 |
title_full_unstemmed |
Jakobia similaris DattaGupta 1981 |
title_sort |
jakobia similaris dattagupta 1981 |
publishDate |
2006 |
url |
https://zenodo.org/record/4893182 https://doi.org/10.5281/zenodo.4893182 |
long_lat |
ENVELOPE(-153.167,-153.167,-86.183,-86.183) |
geographic |
Stump |
geographic_facet |
Stump |
genre |
North Atlantic North East Atlantic |
genre_facet |
North Atlantic North East Atlantic |
op_source |
Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28(4) 855-856 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03F53669FFE4FFFDFD50BC6C2209C29C doi:10.5281/zenodo.4689879 http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 doi:10.5281/zenodo.4689881 doi:10.5281/zenodo.4893181 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4893182 https://doi.org/10.5281/zenodo.4893182 oai:zenodo.org:4893182 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.489318210.5281/zenodo.468987910.5281/zenodo.468988110.5281/zenodo.4893181 |
_version_ |
1767965674156589056 |