Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp.
Isosecuriflustra pinniformis n. sp. (Figures 8–11, Table 4) Material examined. Holotype . MZUSP 0 277, Brazil, project REVIZEE South SCORE, RV ‘Prof. Wladimir Besnard’, station 6661. Paratype . MZUSP 0 278, Brazil, project REVIZEE South SCORE, RV ‘Prof. Wladimir Besnard’, station 6674. Diagnosis. Co...
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Online Access: | https://dx.doi.org/10.5281/zenodo.6206039 https://zenodo.org/record/6206039 |
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ftdatacite:10.5281/zenodo.6206039 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Flustridae Isosecuriflustra Isosecuriflustra pinniformis |
spellingShingle |
Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Flustridae Isosecuriflustra Isosecuriflustra pinniformis Vieira, Leandro M. Gordon, Dennis P. Souza, Facelucia B. C. Haddad, Maria Angélica Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. |
topic_facet |
Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Flustridae Isosecuriflustra Isosecuriflustra pinniformis |
description |
Isosecuriflustra pinniformis n. sp. (Figures 8–11, Table 4) Material examined. Holotype . MZUSP 0 277, Brazil, project REVIZEE South SCORE, RV ‘Prof. Wladimir Besnard’, station 6661. Paratype . MZUSP 0 278, Brazil, project REVIZEE South SCORE, RV ‘Prof. Wladimir Besnard’, station 6674. Diagnosis. Colony unilaminar, with overall shape resembling a feather; zooids rectangular to hexagonal with entirely membranous frontal surface and a D-shaped operculum; spines, avicularia and kenozooids absent; ovicells immersed in succeeding zooid and closed by operculum of the maternal autozooid, with reddish embryos. Etymology. The epithet pinniformis alludes to the characteristic feather shape of colonies. Description. Colony erect and flexible, lightly calcified, unilaminar, unbranched, feather-shaped, with slender proximal stem; larger colony (holotype) about 25 mm high and 4.5 mm wide; colonies attached by chitinized rhizoids in basal part of colony. Zooids more or less rectangular to hexagonal, tapering somewhat medially. Frontal surface entirely membranous; cryptocyst and gymnocyst absent; operculum D-shaped, with yellowish distal edge. No spines, avicularia or kenozooids. Ovicell hyperstomial, immersed in succeeding autozooid, closed by operculum of maternal autozooid, with reddish embryos. n min–max mean SD Autozooid length 20 0.778–0.976 0.879 0.051 Autozooid width 20 0.222–0.358 0.287 0.038 Ovicell length 20 0.346–0.445 0.401 0.026 Ovicell width 20 0.358–0.457 0.415 0.022 Remarks. Alloeoflustra Hayward & Winston, 1994 was established for Flustra angusta Kluge, 1914 from Antarctic waters, and included two other Antarctic species, Flustra tenuis Kluge, 1914 and Flustra thysanica Moyano, 1972. The genus was characterized by the absence of spines or frontal calcification and an ovicell that is closed by the operculum of the maternal autozooid, but Hayward (1995) noted that these characters conform to Isosecuriflustra Liu & Hu, 1991 (type species Flustra tenuis Kluge, 1914), which became a senior subjective synonym. Isosecuriflustra pinniformis n. sp. resembles other species of the genus in having unilaminar colonies, no spines or frontal calcification, and the ovicell closed by the operculum, but the Brazilian species has no avicularia. The endemic Antarctic species Isosecuriflustra tenuis (Kluge, 1914) also has unilaminar colonies, but they are dichotomously branching to a few centimeters high, have slender avicularia at the bifurcation of zooid rows and along branch margins, and smaller ovicells (see Hayward 1995). Two other species with triangular avicularian mandibles were redescribed by Hayward (1995) ― Isosecuriflustra angusta (Kluge, 1914), characterized by very slender bilaminar, highly branched colonies (see Rosso 1994, fig. 2 d; Hayward 1995, fig. 59 C, D), and Isosecuriflustra thysanica (Moyano, 1972), with a broader bilaminar colony up to 5 cm high (see Hayward 1995, fig. 61 B). Rosso (1994) noted differences between specimens of I. tenuis collected at Terra Nova Bay and material collected by other authors (e.g. Androsova 1972 a, b; López Gappa 1982). The Terra Nova Bay colonies have a pale yellow colour and grow up to 4 mm wide, while other Antarctic specimens grow as larger colonies with wider and stronger branches, pink or red in colour. Moyano (1996) introduced the name Isosecuriflustra rubefacta for a pink and broad-fronded phenotype of I. tenuis while agreeing with previous authors that the two did not otherwise differ in zooid dimensions and morphology. Distribution. Brazil: off São Paulo state, 122–147 m (present study). : Published as part of Vieira, Leandro M., Gordon, Dennis P., Souza, Facelucia B. C. & Haddad, Maria Angélica, 2010, New and little-known cheilostomatous Bryozoa from the south and southeastern Brazilian continental shelf and slope, pp. 1-53 in Zootaxa 2722 on pages 9-10, DOI: 10.5281/zenodo.276516 : {"references": ["Hayward, P. J. & Winston, J. E. (1994) New species of cheilostomate Bryozoa collected by the U. S. Antarctic Research Program. Journal of Natural History, 28, 237 - 246.", "Kluge, G. A. (1914) Die Bryozoen der Deutschen Sudpolar-Expedition 1901 - 1903. I. Die Familien Aeteidae, Cellularidae, Bicellaridae, Farciminaridae, Flustridae, Membraniporidae and Cribrilinidae. Deutsch Sudpolar- Expedition XV, Zoology, 7, 599 - 678, pls 27 - 34.", "Liu, X. & Hu, Y. (1991) On the cheilostome bryozoans from the northwest waters off the Antarctic Peninsula. Studia Marina Sinica, 32, 7 - 160.", "Rosso, A. (1994) Bryozoa of the First Italian Antarctic Oceanographic Expedition (Terra Nova Bay, Ross Sea). I. Flustridae Smitt, 1867. Journal of Natural History, 22, 695 - 713.", "Androsova, E. I. (1972 a) Bryozoa Cheilostomata Anasca of the Antartic and Subantarctic. Issledovaniya Fauny Morei, 11, 315 - 344.", "Androsova, E. I. (1972 b) Marine invertebrates from Adelie Land, collected by the XIIth and XVth French Antarctic Expeditions. 6. Bryozoa. Tethys, 4 (Suppl.), 87 - 102.", "Lopez Gappa, J. J. (1982) Bryozoa collected by the German Antarctic Expedition 1980 - 81. 1. Flustridae. ' Meteor' Forschungs-Ergebnisse, D 35, 35 - 41."]} |
format |
Text |
author |
Vieira, Leandro M. Gordon, Dennis P. Souza, Facelucia B. C. Haddad, Maria Angélica |
author_facet |
Vieira, Leandro M. Gordon, Dennis P. Souza, Facelucia B. C. Haddad, Maria Angélica |
author_sort |
Vieira, Leandro M. |
title |
Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. |
title_short |
Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. |
title_full |
Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. |
title_fullStr |
Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. |
title_full_unstemmed |
Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. |
title_sort |
isosecuriflustra pinniformis vieira, gordon, souza & haddad, 2010, n. sp. |
publisher |
Zenodo |
publishDate |
2010 |
url |
https://dx.doi.org/10.5281/zenodo.6206039 https://zenodo.org/record/6206039 |
long_lat |
ENVELOPE(-63.567,-63.567,-64.850,-64.850) ENVELOPE(167.350,167.350,-78.117,-78.117) ENVELOPE(-63.483,-63.483,-64.826,-64.826) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Ross Sea Terra Nova Bay Lopez Hayward Besnard |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Ross Sea Terra Nova Bay Lopez Hayward Besnard |
genre |
Adelie Land Antarc* Antarctic Antarctic Peninsula antartic* Ross Sea |
genre_facet |
Adelie Land Antarc* Antarctic Antarctic Peninsula antartic* Ross Sea |
op_relation |
http://publication.plazi.org/id/FFAFFFBFFFD2FFF0FA78230BFFAAFFA7 http://zoobank.org/F9F8AEB1-9B2A-42A4-972E-A1B2D5A44928 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.276516 http://publication.plazi.org/id/FFAFFFBFFFD2FFF0FA78230BFFAAFFA7 https://dx.doi.org/10.5281/zenodo.276519 http://zoobank.org/F9F8AEB1-9B2A-42A4-972E-A1B2D5A44928 https://dx.doi.org/10.5281/zenodo.6206038 https://zenodo.org/communities/biosyslit |
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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.6206039 https://doi.org/10.5281/zenodo.276516 https://doi.org/10.5281/zenodo.276519 https://doi.org/10.5281/zenodo.6206038 |
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1766359653843730432 |
spelling |
ftdatacite:10.5281/zenodo.6206039 2023-05-15T13:04:26+02:00 Isosecuriflustra pinniformis Vieira, Gordon, Souza & Haddad, 2010, n. sp. Vieira, Leandro M. Gordon, Dennis P. Souza, Facelucia B. C. Haddad, Maria Angélica 2010 https://dx.doi.org/10.5281/zenodo.6206039 https://zenodo.org/record/6206039 unknown Zenodo http://publication.plazi.org/id/FFAFFFBFFFD2FFF0FA78230BFFAAFFA7 http://zoobank.org/F9F8AEB1-9B2A-42A4-972E-A1B2D5A44928 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.276516 http://publication.plazi.org/id/FFAFFFBFFFD2FFF0FA78230BFFAAFFA7 https://dx.doi.org/10.5281/zenodo.276519 http://zoobank.org/F9F8AEB1-9B2A-42A4-972E-A1B2D5A44928 https://dx.doi.org/10.5281/zenodo.6206038 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 Bryozoa Gymnolaemata Cheilostomatida Flustridae Isosecuriflustra Isosecuriflustra pinniformis article-journal ScholarlyArticle Taxonomic treatment Text 2010 ftdatacite https://doi.org/10.5281/zenodo.6206039 https://doi.org/10.5281/zenodo.276516 https://doi.org/10.5281/zenodo.276519 https://doi.org/10.5281/zenodo.6206038 2022-04-01T11:47:40Z Isosecuriflustra pinniformis n. sp. (Figures 8–11, Table 4) Material examined. Holotype . MZUSP 0 277, Brazil, project REVIZEE South SCORE, RV ‘Prof. Wladimir Besnard’, station 6661. Paratype . MZUSP 0 278, Brazil, project REVIZEE South SCORE, RV ‘Prof. Wladimir Besnard’, station 6674. Diagnosis. Colony unilaminar, with overall shape resembling a feather; zooids rectangular to hexagonal with entirely membranous frontal surface and a D-shaped operculum; spines, avicularia and kenozooids absent; ovicells immersed in succeeding zooid and closed by operculum of the maternal autozooid, with reddish embryos. Etymology. The epithet pinniformis alludes to the characteristic feather shape of colonies. Description. Colony erect and flexible, lightly calcified, unilaminar, unbranched, feather-shaped, with slender proximal stem; larger colony (holotype) about 25 mm high and 4.5 mm wide; colonies attached by chitinized rhizoids in basal part of colony. Zooids more or less rectangular to hexagonal, tapering somewhat medially. Frontal surface entirely membranous; cryptocyst and gymnocyst absent; operculum D-shaped, with yellowish distal edge. No spines, avicularia or kenozooids. Ovicell hyperstomial, immersed in succeeding autozooid, closed by operculum of maternal autozooid, with reddish embryos. n min–max mean SD Autozooid length 20 0.778–0.976 0.879 0.051 Autozooid width 20 0.222–0.358 0.287 0.038 Ovicell length 20 0.346–0.445 0.401 0.026 Ovicell width 20 0.358–0.457 0.415 0.022 Remarks. Alloeoflustra Hayward & Winston, 1994 was established for Flustra angusta Kluge, 1914 from Antarctic waters, and included two other Antarctic species, Flustra tenuis Kluge, 1914 and Flustra thysanica Moyano, 1972. The genus was characterized by the absence of spines or frontal calcification and an ovicell that is closed by the operculum of the maternal autozooid, but Hayward (1995) noted that these characters conform to Isosecuriflustra Liu & Hu, 1991 (type species Flustra tenuis Kluge, 1914), which became a senior subjective synonym. Isosecuriflustra pinniformis n. sp. resembles other species of the genus in having unilaminar colonies, no spines or frontal calcification, and the ovicell closed by the operculum, but the Brazilian species has no avicularia. The endemic Antarctic species Isosecuriflustra tenuis (Kluge, 1914) also has unilaminar colonies, but they are dichotomously branching to a few centimeters high, have slender avicularia at the bifurcation of zooid rows and along branch margins, and smaller ovicells (see Hayward 1995). Two other species with triangular avicularian mandibles were redescribed by Hayward (1995) ― Isosecuriflustra angusta (Kluge, 1914), characterized by very slender bilaminar, highly branched colonies (see Rosso 1994, fig. 2 d; Hayward 1995, fig. 59 C, D), and Isosecuriflustra thysanica (Moyano, 1972), with a broader bilaminar colony up to 5 cm high (see Hayward 1995, fig. 61 B). Rosso (1994) noted differences between specimens of I. tenuis collected at Terra Nova Bay and material collected by other authors (e.g. Androsova 1972 a, b; López Gappa 1982). The Terra Nova Bay colonies have a pale yellow colour and grow up to 4 mm wide, while other Antarctic specimens grow as larger colonies with wider and stronger branches, pink or red in colour. Moyano (1996) introduced the name Isosecuriflustra rubefacta for a pink and broad-fronded phenotype of I. tenuis while agreeing with previous authors that the two did not otherwise differ in zooid dimensions and morphology. Distribution. Brazil: off São Paulo state, 122–147 m (present study). : Published as part of Vieira, Leandro M., Gordon, Dennis P., Souza, Facelucia B. C. & Haddad, Maria Angélica, 2010, New and little-known cheilostomatous Bryozoa from the south and southeastern Brazilian continental shelf and slope, pp. 1-53 in Zootaxa 2722 on pages 9-10, DOI: 10.5281/zenodo.276516 : {"references": ["Hayward, P. J. & Winston, J. E. (1994) New species of cheilostomate Bryozoa collected by the U. S. Antarctic Research Program. Journal of Natural History, 28, 237 - 246.", "Kluge, G. A. (1914) Die Bryozoen der Deutschen Sudpolar-Expedition 1901 - 1903. I. Die Familien Aeteidae, Cellularidae, Bicellaridae, Farciminaridae, Flustridae, Membraniporidae and Cribrilinidae. Deutsch Sudpolar- Expedition XV, Zoology, 7, 599 - 678, pls 27 - 34.", "Liu, X. & Hu, Y. (1991) On the cheilostome bryozoans from the northwest waters off the Antarctic Peninsula. Studia Marina Sinica, 32, 7 - 160.", "Rosso, A. (1994) Bryozoa of the First Italian Antarctic Oceanographic Expedition (Terra Nova Bay, Ross Sea). I. Flustridae Smitt, 1867. Journal of Natural History, 22, 695 - 713.", "Androsova, E. I. (1972 a) Bryozoa Cheilostomata Anasca of the Antartic and Subantarctic. Issledovaniya Fauny Morei, 11, 315 - 344.", "Androsova, E. I. (1972 b) Marine invertebrates from Adelie Land, collected by the XIIth and XVth French Antarctic Expeditions. 6. Bryozoa. Tethys, 4 (Suppl.), 87 - 102.", "Lopez Gappa, J. J. (1982) Bryozoa collected by the German Antarctic Expedition 1980 - 81. 1. Flustridae. ' Meteor' Forschungs-Ergebnisse, D 35, 35 - 41."]} Text Adelie Land Antarc* Antarctic Antarctic Peninsula antartic* Ross Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Antarctic Peninsula Ross Sea Terra Nova Bay Lopez ENVELOPE(-63.567,-63.567,-64.850,-64.850) Hayward ENVELOPE(167.350,167.350,-78.117,-78.117) Besnard ENVELOPE(-63.483,-63.483,-64.826,-64.826) |