Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp.
Dysponetus antarcticus n. sp. Figure 3 A–D 1993: Dysponetus bulbosus Hartmann-Schröder: p 128 – 9. Material examined. South of King George Island, Antarctica, Sta. near O’Higgins (63 ° 00.49′S, 057° 09.45′W), very fine sand with Bryozoa, gorgonians, much detritus, 97 m, holotype (ZMH P- 21914) parat...
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ftzenodo:oai:zenodo.org:6112766 2023-05-15T13:57:49+02:00 Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. Darbyshire, Teresa Brewin, Paul E. 2015-12-31 https://zenodo.org/record/6112766 https://doi.org/10.5281/zenodo.6112766 unknown info:eu-repo/semantics/altIdentifier/url/http://zoobank.org/1D913716-AAF6-4A5E-8279-7A5BE13AA394 info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03965655BF41FFAFFF13FBBD9557FD97 info:eu-repo/semantics/altIdentifier/lsid/urn:lsid:zoobank.org:act:1D913716-AAF6-4A5E-8279-7A5BE13AA394 doi:10.11646/zootaxa.4040.3.7 http://zenodo.org/record/241445 http://publication.plazi.org/id/FFAF2E2DBF45FFA9FF84FF959441FFAA doi:10.5281/zenodo.241448 http://zoobank.org/C9FF307A-F3FD-4143-94BE-373E1C651A65 doi:10.5281/zenodo.6112765 https://zenodo.org/communities/biosyslit https://zenodo.org/record/6112766 https://doi.org/10.5281/zenodo.6112766 oai:zenodo.org:6112766 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Three new species of Dysponetus Levinsen, 1879 (Polychaeta: Chrysopetalidae) from the South Atlantic and Southern Ocean, with a re-description of Dysponetus bulbosus Hartmann-Schröder, 1982, pp. 359-370 in Zootaxa 4040(3) 363-365 Biodiversity Taxonomy Animalia Annelida Polychaeta Phyllodocida Chrysopetalidae Dysponetus Dysponetus antarcticus info:eu-repo/semantics/other publication-taxonomictreatment 2015 ftzenodo https://doi.org/10.5281/zenodo.611276610.11646/zootaxa.4040.3.710.5281/zenodo.24144810.5281/zenodo.6112765 2023-03-10T17:18:57Z Dysponetus antarcticus n. sp. Figure 3 A–D 1993: Dysponetus bulbosus Hartmann-Schröder: p 128 – 9. Material examined. South of King George Island, Antarctica, Sta. near O’Higgins (63 ° 00.49′S, 057° 09.45′W), very fine sand with Bryozoa, gorgonians, much detritus, 97 m, holotype (ZMH P- 21914) paratype (ZMH P- 27740), 22.12. 1991. Description. Holotype posteriorly incomplete, 2.7 mm long for 15 chaetigers (15 th chaetiger removed for SEM). Paratype whole, juvenile, 1.29 mm for 14 chaetigers. Maximum width measured both between segments, 0.7 mm (holotype) and 0.26 mm (paratype), and including chaetae, 3.0 mm (holotype) and 1.07 mm (paratype). Description based on holotype except where specified. Measurements and counts of chaetae and cirri from holotype only. Body shape cylindrical, ventrally flattened, tapered over last 2–3 segments at posterior. Colour pink-brown in alcohol. Prostomium sub-rectangular (Fig. 3 A), only slightly wider anteriorly. Eyes absent or degraded beyond visibility (see Remarks for comment on presence of eyes). Median antenna, present on paratype but not holotype, anterodorsally attached, same shape but slightly shorter than lateral antennae. Lateral antennae bottle-shaped (Fig. 3 B), 1 remaining on holotype (150 µm long), arising immediately dorsal to palps. Palps (190 µm long) directed posteriorly (Fig. 3 B), stouter than antennae or cirri, approximately 3 times as long as wide. Nuchal organs not observed. Single mouth appendage small, difficult to discern. Single pair of small jaws, barely visible through body even with methyl green staining. Proboscis not observed. First two segments elevated dorsally with four pairs tentacular cirri, dorsal pairs lost, ventral pairs of similar shape and size as following ventral cirri. First segment achaetous, second segment with notochaetae only, situated anterior to dorsal tentacular cirrus, easily confused with first segment. Third and following segments all biramous, dorsal, ventral cirri, noto- and neurochaetae present. Cirrophores present. ... Other/Unknown Material Antarc* Antarctica antarcticus King George Island Zenodo King George Island Noto ENVELOPE(-60.811,-60.811,-62.471,-62.471) Darbyshire ENVELOPE(158.083,158.083,-78.467,-78.467) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Polychaeta Phyllodocida Chrysopetalidae Dysponetus Dysponetus antarcticus |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Polychaeta Phyllodocida Chrysopetalidae Dysponetus Dysponetus antarcticus Darbyshire, Teresa Brewin, Paul E. Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Polychaeta Phyllodocida Chrysopetalidae Dysponetus Dysponetus antarcticus |
description |
Dysponetus antarcticus n. sp. Figure 3 A–D 1993: Dysponetus bulbosus Hartmann-Schröder: p 128 – 9. Material examined. South of King George Island, Antarctica, Sta. near O’Higgins (63 ° 00.49′S, 057° 09.45′W), very fine sand with Bryozoa, gorgonians, much detritus, 97 m, holotype (ZMH P- 21914) paratype (ZMH P- 27740), 22.12. 1991. Description. Holotype posteriorly incomplete, 2.7 mm long for 15 chaetigers (15 th chaetiger removed for SEM). Paratype whole, juvenile, 1.29 mm for 14 chaetigers. Maximum width measured both between segments, 0.7 mm (holotype) and 0.26 mm (paratype), and including chaetae, 3.0 mm (holotype) and 1.07 mm (paratype). Description based on holotype except where specified. Measurements and counts of chaetae and cirri from holotype only. Body shape cylindrical, ventrally flattened, tapered over last 2–3 segments at posterior. Colour pink-brown in alcohol. Prostomium sub-rectangular (Fig. 3 A), only slightly wider anteriorly. Eyes absent or degraded beyond visibility (see Remarks for comment on presence of eyes). Median antenna, present on paratype but not holotype, anterodorsally attached, same shape but slightly shorter than lateral antennae. Lateral antennae bottle-shaped (Fig. 3 B), 1 remaining on holotype (150 µm long), arising immediately dorsal to palps. Palps (190 µm long) directed posteriorly (Fig. 3 B), stouter than antennae or cirri, approximately 3 times as long as wide. Nuchal organs not observed. Single mouth appendage small, difficult to discern. Single pair of small jaws, barely visible through body even with methyl green staining. Proboscis not observed. First two segments elevated dorsally with four pairs tentacular cirri, dorsal pairs lost, ventral pairs of similar shape and size as following ventral cirri. First segment achaetous, second segment with notochaetae only, situated anterior to dorsal tentacular cirrus, easily confused with first segment. Third and following segments all biramous, dorsal, ventral cirri, noto- and neurochaetae present. Cirrophores present. ... |
format |
Other/Unknown Material |
author |
Darbyshire, Teresa Brewin, Paul E. |
author_facet |
Darbyshire, Teresa Brewin, Paul E. |
author_sort |
Darbyshire, Teresa |
title |
Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. |
title_short |
Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. |
title_full |
Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. |
title_fullStr |
Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. |
title_full_unstemmed |
Dysponetus antarcticus Darbyshire & Brewin, 2015, n. sp. |
title_sort |
dysponetus antarcticus darbyshire & brewin, 2015, n. sp. |
publishDate |
2015 |
url |
https://zenodo.org/record/6112766 https://doi.org/10.5281/zenodo.6112766 |
long_lat |
ENVELOPE(-60.811,-60.811,-62.471,-62.471) ENVELOPE(158.083,158.083,-78.467,-78.467) |
geographic |
King George Island Noto Darbyshire |
geographic_facet |
King George Island Noto Darbyshire |
genre |
Antarc* Antarctica antarcticus King George Island |
genre_facet |
Antarc* Antarctica antarcticus King George Island |
op_source |
Three new species of Dysponetus Levinsen, 1879 (Polychaeta: Chrysopetalidae) from the South Atlantic and Southern Ocean, with a re-description of Dysponetus bulbosus Hartmann-Schröder, 1982, pp. 359-370 in Zootaxa 4040(3) 363-365 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://zoobank.org/1D913716-AAF6-4A5E-8279-7A5BE13AA394 info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03965655BF41FFAFFF13FBBD9557FD97 info:eu-repo/semantics/altIdentifier/lsid/urn:lsid:zoobank.org:act:1D913716-AAF6-4A5E-8279-7A5BE13AA394 doi:10.11646/zootaxa.4040.3.7 http://zenodo.org/record/241445 http://publication.plazi.org/id/FFAF2E2DBF45FFA9FF84FF959441FFAA doi:10.5281/zenodo.241448 http://zoobank.org/C9FF307A-F3FD-4143-94BE-373E1C651A65 doi:10.5281/zenodo.6112765 https://zenodo.org/communities/biosyslit https://zenodo.org/record/6112766 https://doi.org/10.5281/zenodo.6112766 oai:zenodo.org:6112766 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.611276610.11646/zootaxa.4040.3.710.5281/zenodo.24144810.5281/zenodo.6112765 |
_version_ |
1766265714440667136 |