Chaetozone curvata Hartmann-Schroder 1965
Chaetozone curvata Hartmann-Schröder, 1965 Chaetozone curvata Hartmann-Schröder, 1965: 219–221, figs. 213–215; Rozbaczylo 1985: 151; Blake 1996: 289; Montiel 2005: 88, 94. Material examined. Chile, offshore Valdivia , holotype , Sta. 96, coll. 15 Mar 1960, 39°59.9ʹS, 74°0.15ʹW, silt with fine sand,...
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Online Access: | https://dx.doi.org/10.5281/zenodo.3798507 https://zenodo.org/record/3798507 |
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openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Chaetozone Chaetozone curvata |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Chaetozone Chaetozone curvata Blake, James A. Chaetozone curvata Hartmann-Schroder 1965 |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Chaetozone Chaetozone curvata |
description |
Chaetozone curvata Hartmann-Schröder, 1965 Chaetozone curvata Hartmann-Schröder, 1965: 219–221, figs. 213–215; Rozbaczylo 1985: 151; Blake 1996: 289; Montiel 2005: 88, 94. Material examined. Chile, offshore Valdivia , holotype , Sta. 96, coll. 15 Mar 1960, 39°59.9ʹS, 74°0.15ʹW, silt with fine sand, stones, and little detritus, 260 m (ZMH P-15050). Description . Holotype complete, 11 mm long, 0.5 mm wide, with 85 setigers. Specimen in poor condition, darkly colored, almost black, likely due to having died prior to preservation. Some evidence of pigment granules on anterior segments, these obscured by dark color. Anterior segments narrow, about eight times wider than long; middle segments becoming longer and more rounded, posterior segments cinctured. Prostomium slender, conical, slightly longer than wide; eyespots absent; nuchal organs not observed. Peristomium with three rings, first narrow, merged with prostomium; second and third rings larger, about equal in size, each about twice as large as following setigerous segments; no dorsal crest, grooves cutting each ring continuing dorsally. Dorsal tentacles arise from posterior margin of peristomium. First branchiae on setiger 1 dorsal to notosetae; subsequent branchiae on following segments in same position; branchiae present along three-quarters of body, absent from last 20–25 segments. Parapodia reduced, anterior parapodial shoulders not evident. Setae all capillaries for about first 60 setigers, with notosetae longer than neurosetae; long natatory-like setae not present. Transition to acicular spines occurs at about setiger 60 or in posterior one-third of body. With appearance of spines, parapodia becoming higher, forming elevated membranes in last ten segments with a dorsal gap between notopodia. These membranes bear complete cinctures of spines, with up to 12 in notopodia and 10 in neuropodia or up to 22 spines on a side. Spines accompanied by thin alternating capillaries. Individual notoacicular spines narrow, long, slightly curved along shaft and sharply curved apically to narrow, pointed tip that curves back and adheres to shaft. Neuroacicular spines similar, but shorter, thicker at base and with a similar sharply bent tip that curves over toward shaft. Pygidium with a short, triangular lobe ventral to anus. Remarks . Chaetozone curvata was the first species in the genus to be described having acicular spines with a sharp tip that curves over and adheres to the shaft. With the description of C. gesae n. sp. , there are now seven such species known (see Remarks for C. gesae n. sp. , below). Distribution . Central and southern Chile, 82– 260 m. : Published as part of Blake, James A., 2018, Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R / V Anton Bruun, USNS Eltanin, USCG Glacier, R / V Hero, RVIB Nathaniel B. Palmer, and R / V Polarstern from the Southern Ocean, Antarctica, and off Western South America, pp. 1-130 in Zootaxa 4537 (1) on pages 87-88, DOI: 10.11646/zootaxa.4537.1.1, http://zenodo.org/record/3771214 : {"references": ["Hartmann-Schroder, G. (1965) Die Polychaeten des Sublitorals. In: Hartmann-Schroder, G. und G. Hartmann, Zur Kenntnis des Sublitorals der chilenischen Kuste unter besonderer Beruchsichtigung der Polychaeten und Ostracoden. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 62, pp. 59 - 305.", "Rozbaczylo, N. (1985) Los Anelidos Poliquetos de Chile. Monografias Biologicas, 3, 1 - 284.", "Blake, J. A. (1996) Chapter 8. Family Cirratulidae. In: Blake, J. A., Hilbig, B. & Scott, P. H. (Eds.), Taxonomic Atlas of the Santa Maria Basin and Western Santa Barbara Channel. Vol. 6. Annelida Part 3. Polychaeta: Orbiniidae to Cossuridae. Santa Barbara Museum of Natural History, Santa Barbara, pp. 263 - 384."]} |
format |
Text |
author |
Blake, James A. |
author_facet |
Blake, James A. |
author_sort |
Blake, James A. |
title |
Chaetozone curvata Hartmann-Schroder 1965 |
title_short |
Chaetozone curvata Hartmann-Schroder 1965 |
title_full |
Chaetozone curvata Hartmann-Schroder 1965 |
title_fullStr |
Chaetozone curvata Hartmann-Schroder 1965 |
title_full_unstemmed |
Chaetozone curvata Hartmann-Schroder 1965 |
title_sort |
chaetozone curvata hartmann-schroder 1965 |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://dx.doi.org/10.5281/zenodo.3798507 https://zenodo.org/record/3798507 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_relation |
http://zenodo.org/record/3771214 http://publication.plazi.org/id/FF9BB36EFFF5A24AFFA1FFBEFF85FFC4 http://zoobank.org/169CBE5C-3A6E-438B-8A81-0491CBFBAC85 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4537.1.1 http://zenodo.org/record/3771214 http://publication.plazi.org/id/FF9BB36EFFF5A24AFFA1FFBEFF85FFC4 http://zoobank.org/169CBE5C-3A6E-438B-8A81-0491CBFBAC85 https://dx.doi.org/10.5281/zenodo.3798508 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.3798507 https://doi.org/10.11646/zootaxa.4537.1.1 https://doi.org/10.5281/zenodo.3798508 |
_version_ |
1766252715113971712 |
spelling |
ftdatacite:10.5281/zenodo.3798507 2023-05-15T13:50:00+02:00 Chaetozone curvata Hartmann-Schroder 1965 Blake, James A. 2018 https://dx.doi.org/10.5281/zenodo.3798507 https://zenodo.org/record/3798507 unknown Zenodo http://zenodo.org/record/3771214 http://publication.plazi.org/id/FF9BB36EFFF5A24AFFA1FFBEFF85FFC4 http://zoobank.org/169CBE5C-3A6E-438B-8A81-0491CBFBAC85 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4537.1.1 http://zenodo.org/record/3771214 http://publication.plazi.org/id/FF9BB36EFFF5A24AFFA1FFBEFF85FFC4 http://zoobank.org/169CBE5C-3A6E-438B-8A81-0491CBFBAC85 https://dx.doi.org/10.5281/zenodo.3798508 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Chaetozone Chaetozone curvata Taxonomic treatment article-journal Text ScholarlyArticle 2018 ftdatacite https://doi.org/10.5281/zenodo.3798507 https://doi.org/10.11646/zootaxa.4537.1.1 https://doi.org/10.5281/zenodo.3798508 2022-02-08T13:42:09Z Chaetozone curvata Hartmann-Schröder, 1965 Chaetozone curvata Hartmann-Schröder, 1965: 219–221, figs. 213–215; Rozbaczylo 1985: 151; Blake 1996: 289; Montiel 2005: 88, 94. Material examined. Chile, offshore Valdivia , holotype , Sta. 96, coll. 15 Mar 1960, 39°59.9ʹS, 74°0.15ʹW, silt with fine sand, stones, and little detritus, 260 m (ZMH P-15050). Description . Holotype complete, 11 mm long, 0.5 mm wide, with 85 setigers. Specimen in poor condition, darkly colored, almost black, likely due to having died prior to preservation. Some evidence of pigment granules on anterior segments, these obscured by dark color. Anterior segments narrow, about eight times wider than long; middle segments becoming longer and more rounded, posterior segments cinctured. Prostomium slender, conical, slightly longer than wide; eyespots absent; nuchal organs not observed. Peristomium with three rings, first narrow, merged with prostomium; second and third rings larger, about equal in size, each about twice as large as following setigerous segments; no dorsal crest, grooves cutting each ring continuing dorsally. Dorsal tentacles arise from posterior margin of peristomium. First branchiae on setiger 1 dorsal to notosetae; subsequent branchiae on following segments in same position; branchiae present along three-quarters of body, absent from last 20–25 segments. Parapodia reduced, anterior parapodial shoulders not evident. Setae all capillaries for about first 60 setigers, with notosetae longer than neurosetae; long natatory-like setae not present. Transition to acicular spines occurs at about setiger 60 or in posterior one-third of body. With appearance of spines, parapodia becoming higher, forming elevated membranes in last ten segments with a dorsal gap between notopodia. These membranes bear complete cinctures of spines, with up to 12 in notopodia and 10 in neuropodia or up to 22 spines on a side. Spines accompanied by thin alternating capillaries. Individual notoacicular spines narrow, long, slightly curved along shaft and sharply curved apically to narrow, pointed tip that curves back and adheres to shaft. Neuroacicular spines similar, but shorter, thicker at base and with a similar sharply bent tip that curves over toward shaft. Pygidium with a short, triangular lobe ventral to anus. Remarks . Chaetozone curvata was the first species in the genus to be described having acicular spines with a sharp tip that curves over and adheres to the shaft. With the description of C. gesae n. sp. , there are now seven such species known (see Remarks for C. gesae n. sp. , below). Distribution . Central and southern Chile, 82– 260 m. : Published as part of Blake, James A., 2018, Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R / V Anton Bruun, USNS Eltanin, USCG Glacier, R / V Hero, RVIB Nathaniel B. Palmer, and R / V Polarstern from the Southern Ocean, Antarctica, and off Western South America, pp. 1-130 in Zootaxa 4537 (1) on pages 87-88, DOI: 10.11646/zootaxa.4537.1.1, http://zenodo.org/record/3771214 : {"references": ["Hartmann-Schroder, G. (1965) Die Polychaeten des Sublitorals. In: Hartmann-Schroder, G. und G. Hartmann, Zur Kenntnis des Sublitorals der chilenischen Kuste unter besonderer Beruchsichtigung der Polychaeten und Ostracoden. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 62, pp. 59 - 305.", "Rozbaczylo, N. (1985) Los Anelidos Poliquetos de Chile. Monografias Biologicas, 3, 1 - 284.", "Blake, J. A. (1996) Chapter 8. Family Cirratulidae. In: Blake, J. A., Hilbig, B. & Scott, P. H. (Eds.), Taxonomic Atlas of the Santa Maria Basin and Western Santa Barbara Channel. Vol. 6. Annelida Part 3. Polychaeta: Orbiniidae to Cossuridae. Santa Barbara Museum of Natural History, Santa Barbara, pp. 263 - 384."]} Text Antarc* Antarctica Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean |