Cyclocardia thouarsii d'Orbigny 1845
Cyclocardia thouarsii (d’Orbigny, 1845) Figs. 3 A– O, 9 B, Appendix 3 Cardita thouarsii d’Orbigny, 1845: 579 —d’Orbygny, 1847?: pl. 84, figs. 1–3. Actinobolus thouarsii D’Orbigny, 1846 — Tryon, 1872: 255. Cardita Thouarsi [ sic ] [ recte thouarsii ] d’Orbigny—Rochebrune & Mabille, 1889: H 111. C...
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Online Access: | https://dx.doi.org/10.5281/zenodo.6154767 https://zenodo.org/record/6154767 |
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ftdatacite:10.5281/zenodo.6154767 |
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openpolar |
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Open Polar |
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topic |
Biodiversity Taxonomy Animalia Mollusca Bivalvia Carditoida Carditidae Cyclocardia Cyclocardia thouarsii |
spellingShingle |
Biodiversity Taxonomy Animalia Mollusca Bivalvia Carditoida Carditidae Cyclocardia Cyclocardia thouarsii Güller, Marina Zelaya, Diego G. Cyclocardia thouarsii d'Orbigny 1845 |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Bivalvia Carditoida Carditidae Cyclocardia Cyclocardia thouarsii |
description |
Cyclocardia thouarsii (d’Orbigny, 1845) Figs. 3 A– O, 9 B, Appendix 3 Cardita thouarsii d’Orbigny, 1845: 579 —d’Orbygny, 1847?: pl. 84, figs. 1–3. Actinobolus thouarsii D’Orbigny, 1846 — Tryon, 1872: 255. Cardita Thouarsi [ sic ] [ recte thouarsii ] d’Orbigny—Rochebrune & Mabille, 1889: H 111. Cardita congelascens Melvill & Standen, 1912: 362, pl. 1, fig. 23. Cyclocardia thouarsi [ sic ] [ recte thouarsii ] Orbigny, 1846 — Soot-Ryen, 1959: 39. Cyclocardia thouarsi [ sic ] [ recte thouarsii ] (Orbigny, 1846)— Dell, 1964: 189, pl. 2, fig. 9. Type localities: Îles Malouines [Malvinas / Falkland Islands] ( Cardita thouarsii ); Burdwood Bank, 56 fathoms [102 m] ( Cardita congelascens ). Material examined: Holotype of Cardita thouarsii (NHMUK 1854.12.4.760), 1 syntype of Cardita congelascens (RSM 1921.143.711), and 19 lots (Appendix 3, Table 1). Other published records: Baie Orange [55 º 31 ’S 70 º 26 ’W] (Rochebrune & Mabille, 1889) (Appendix 3, Table 2). Known distribution: Cape Horn [55 °S] to Malvinas / Falkland Islands [50 °S]. Living specimens: 198– 903 m. Description: Shell large (maximum observed L = 21.3 mm), transversely ovate to rectangular (H/L = 0.89 ± 0.06, n = 6), inequilateral, somewhat inflated (W/H = 0.66 ± 0.02, n = 6), solid (Figs. 3 A–K). Anterior end produced, lower than posterior end. Antero-dorsal margin short, markedly concave, forming a prominent angle at the junction with anterior margin. Anterior margin short, curved, continuous with ventral margin, which is slightly expanded posteriorly. Posterior margin larger than the anterior one, forming a wide, almost vertical curve. Posterodorsal margin long, slightly sloping (Figs. 3 A–H, J, K). Lunule short, wide and moderately deep; escutcheon elongated, extremely narrow (Fig. 3 I). Beaks inflated, anteriorly displaced, anteriorly directed (Figs. 3 A–K). Prodissoconch small (about 225 µm in length); P- 1 smooth, P- 2 with low commarginal lines (Fig. 3 O). Shell surface sculptured with 16–22 moderately elevated, radial ribs, closely and finely scaled; interspaces as wide as or narrower than radial ribs, with fine commarginal lamellae (Figs. 3 A–C, E–G). Periostracum thick, pale buff, forming hair-like projections (Figs. 3 A, B, E, L). Inner margin crenulated, coincident with outer shell sculpture. Pallial line continuous (Figs. 3 H, J, K). Hinge plate relatively narrow, anterior and posterior halves nearly equal in height (Figs. 3 M, N). Right valve (Fig. 3 N): anterior cardinal tooth (CA 3) hooked, dorsally fused with shell margin, anterior part (CA 3 a), short, narrow, ventrally directed; posterior part (CA 3 b) large, with widely posteriorly projected triangular base. Posterior cardinal tooth (CP 5 b) long, straight, moderately solid, parallel to nymph. Anterior lateral tooth (LAI) short, narrow. Posterior lateral tooth (LPI) elongated, narrow, close to dorsal margin. Left valve (Fig. 3 M): two diverging cardinal teeth; the anterior (CA 2 a) small, triangular, ventrally directed, with subcentral cusp, one third the size of the posterior one (CP 4 b). Posterior cardinal nearly straight, distally widened. Anterior lateral (LAII) and posterior lateral (LPII) small. Ligament external, located on a nymph which extends for two thirds the length of posterodorsal margin (Figs. 3 I, M, N). Anatomy (Fig. 9 B): Mantle margin with a large inhalant-pedal aperture, extending for about 4 / 5 of mantle margin length, separated from a relatively large posterior exhalant opening by a short suture. Transverse section of anterior and posterior adductor muscles large, the former reniform, the latter ovate. Inner and outer demibranchs posteriorly fused with each other and with mantle margin. Outer demibranch two thirds the size of inner one, showing 202 filaments in a 18 mm long specimen; ascending and descending lamellae equally developed. Inner demibranch with 214 filaments; ascending lamella as high as descending lamella. Labial palps with ill defined sorting ridges. Foot with posterior byssal gland. Remarks: Dell (1964) suggested that Cyclocardia thouarsii and C. velutina could correspond to variations of a single species. From the present study it is clear that they are two different species: Cyclocardia thouarsii is more laterally compressed, has a more elongated shell outline, it is sculptured with lower radial ribs, the beaks are more anteriorly placed, and the hinge plate is narrower, with more delicate teeth than C. velutina . Cyclocardia thouarsii was described by d’Orbigny in the “Voyage dans l’Amerique Méridionale…” page 580, and illustrated on plate 84. According to Sherborn & Griffin (1934) and Cowie & Thiengo (2003), that page was published in 1845; however, none of these papers refer to the date of publication of plate 84, and no other reference is available to date this plate. According to the ICZN (1999), Art. 21.7, the date of publication should be regarded as the “earliest date on which the work, or part of it, is demonstrated to be in existence as a published work”. Under this criterion, we consider that the date of publication for the species corresponds to the date of publication of the text. : Published as part of Güller, Marina & Zelaya, Diego G., 2013, The Families Carditidae and Condylocardiidae in the Magellan and Perú – Chile provinces (Bivalvia: Carditoidea), pp. 201-239 in Zootaxa 3682 (2) on pages 207-209, DOI: 10.11646/zootaxa.3682.2.1, http://zenodo.org/record/217328 : {"references": ["Tryon, G. W. Jr. (1872) Catalogue of the Recent species of the family Cardiidae. American Journal of Conchology, 7, 259 - 275.", "Rochebrune, A. T. & Mabille, J. (1889) Mollusques. Mission Scientifique du Cap Horn 1882 - 1883, 6, Zoologie 2. Gauthier- Villars, Paris, 143 pp., pls. 1 - 9. http: // dx. doi. org / 10.5962 / bhl. title. 2480", "Melvill, J. C. & Standen, R. (1912) The marine Mollusca of the Scottish National Antarctic Expedition. Part II. Transactions of the Royal Society of Edinburgh, 48, 333 - 366.", "Soot-Ryen, T. (1959) Reports of the Lund University Chile Expedition 1948 - 1949. 35. Pelecypoda. Lunds Universitets Arsskrift, N. F. Avd. 2, 55, 3 - 86, 4 pls.", "Dell, R. K. (1964) Antarctic and subantarctic Mollusca: Amphineura, Scaphopoda and Bivalvia. Discovery Reports, 33, 93 - 250, pls. 2 - 7.", "Sherborn, C. D. & Griffin, F. J. (1934) On the dates of publication of the Natural History portions of Alcide d'Orbigny's \" Voyage Amerique Meridionale \". Annals and Magazin of Natural History, 10, 130 - 134. http: // dx. doi. org / 10.1080 / 00222933408654798", "Cowie, R. H. & Thiengo, S. C. (2003) The apple snails of the Americas (Mollusca: Gastropoda: Ampullariidae: Asolene, Felipponea, Marsia, Pomacea, Pomella): a nomenclatural and type catalogue. Malacologia, 45, 41 - 100."]} |
format |
Text |
author |
Güller, Marina Zelaya, Diego G. |
author_facet |
Güller, Marina Zelaya, Diego G. |
author_sort |
Güller, Marina |
title |
Cyclocardia thouarsii d'Orbigny 1845 |
title_short |
Cyclocardia thouarsii d'Orbigny 1845 |
title_full |
Cyclocardia thouarsii d'Orbigny 1845 |
title_fullStr |
Cyclocardia thouarsii d'Orbigny 1845 |
title_full_unstemmed |
Cyclocardia thouarsii d'Orbigny 1845 |
title_sort |
cyclocardia thouarsii d'orbigny 1845 |
publisher |
Zenodo |
publishDate |
2013 |
url |
https://dx.doi.org/10.5281/zenodo.6154767 https://zenodo.org/record/6154767 |
long_lat |
ENVELOPE(-64.567,-64.567,-64.833,-64.833) ENVELOPE(-135.021,-135.021,61.583,61.583) ENVELOPE(-63.583,-63.583,-64.833,-64.833) ENVELOPE(-59.000,-59.000,-54.250,-54.250) ENVELOPE(15.401,15.401,68.007,68.007) |
geographic |
Antarctic Buff Cape Horn Gauthier Burdwood Bank Ryen |
geographic_facet |
Antarctic Buff Cape Horn Gauthier Burdwood Bank Ryen |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
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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 |
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ftdatacite:10.5281/zenodo.6154767 2023-05-15T13:50:12+02:00 Cyclocardia thouarsii d'Orbigny 1845 Güller, Marina Zelaya, Diego G. 2013 https://dx.doi.org/10.5281/zenodo.6154767 https://zenodo.org/record/6154767 unknown Zenodo http://zenodo.org/record/217328 http://publication.plazi.org/id/6A4A840F3D529F6DE70767741B55873F http://table.plazi.org/id/4AA51DE93D499F76E79067AA1AB587CA http://table.plazi.org/id/4AA51DE93D4F9F70E79062CE194D82ED http://zoobank.org/831A2B81-9972-47B0-A16F-E298D649E98A https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.3682.2.1 http://zenodo.org/record/217328 http://publication.plazi.org/id/6A4A840F3D529F6DE70767741B55873F https://dx.doi.org/10.5281/zenodo.217331 http://table.plazi.org/id/4AA51DE93D499F76E79067AA1AB587CA http://table.plazi.org/id/4AA51DE93D4F9F70E79062CE194D82ED http://zoobank.org/831A2B81-9972-47B0-A16F-E298D649E98A https://dx.doi.org/10.5281/zenodo.6154768 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 Mollusca Bivalvia Carditoida Carditidae Cyclocardia Cyclocardia thouarsii article-journal ScholarlyArticle Taxonomic treatment Text 2013 ftdatacite https://doi.org/10.5281/zenodo.6154767 https://doi.org/10.11646/zootaxa.3682.2.1 https://doi.org/10.5281/zenodo.217331 https://doi.org/10.5281/zenodo.6154768 2022-04-01T11:15:15Z Cyclocardia thouarsii (d’Orbigny, 1845) Figs. 3 A– O, 9 B, Appendix 3 Cardita thouarsii d’Orbigny, 1845: 579 —d’Orbygny, 1847?: pl. 84, figs. 1–3. Actinobolus thouarsii D’Orbigny, 1846 — Tryon, 1872: 255. Cardita Thouarsi [ sic ] [ recte thouarsii ] d’Orbigny—Rochebrune & Mabille, 1889: H 111. Cardita congelascens Melvill & Standen, 1912: 362, pl. 1, fig. 23. Cyclocardia thouarsi [ sic ] [ recte thouarsii ] Orbigny, 1846 — Soot-Ryen, 1959: 39. Cyclocardia thouarsi [ sic ] [ recte thouarsii ] (Orbigny, 1846)— Dell, 1964: 189, pl. 2, fig. 9. Type localities: Îles Malouines [Malvinas / Falkland Islands] ( Cardita thouarsii ); Burdwood Bank, 56 fathoms [102 m] ( Cardita congelascens ). Material examined: Holotype of Cardita thouarsii (NHMUK 1854.12.4.760), 1 syntype of Cardita congelascens (RSM 1921.143.711), and 19 lots (Appendix 3, Table 1). Other published records: Baie Orange [55 º 31 ’S 70 º 26 ’W] (Rochebrune & Mabille, 1889) (Appendix 3, Table 2). Known distribution: Cape Horn [55 °S] to Malvinas / Falkland Islands [50 °S]. Living specimens: 198– 903 m. Description: Shell large (maximum observed L = 21.3 mm), transversely ovate to rectangular (H/L = 0.89 ± 0.06, n = 6), inequilateral, somewhat inflated (W/H = 0.66 ± 0.02, n = 6), solid (Figs. 3 A–K). Anterior end produced, lower than posterior end. Antero-dorsal margin short, markedly concave, forming a prominent angle at the junction with anterior margin. Anterior margin short, curved, continuous with ventral margin, which is slightly expanded posteriorly. Posterior margin larger than the anterior one, forming a wide, almost vertical curve. Posterodorsal margin long, slightly sloping (Figs. 3 A–H, J, K). Lunule short, wide and moderately deep; escutcheon elongated, extremely narrow (Fig. 3 I). Beaks inflated, anteriorly displaced, anteriorly directed (Figs. 3 A–K). Prodissoconch small (about 225 µm in length); P- 1 smooth, P- 2 with low commarginal lines (Fig. 3 O). Shell surface sculptured with 16–22 moderately elevated, radial ribs, closely and finely scaled; interspaces as wide as or narrower than radial ribs, with fine commarginal lamellae (Figs. 3 A–C, E–G). Periostracum thick, pale buff, forming hair-like projections (Figs. 3 A, B, E, L). Inner margin crenulated, coincident with outer shell sculpture. Pallial line continuous (Figs. 3 H, J, K). Hinge plate relatively narrow, anterior and posterior halves nearly equal in height (Figs. 3 M, N). Right valve (Fig. 3 N): anterior cardinal tooth (CA 3) hooked, dorsally fused with shell margin, anterior part (CA 3 a), short, narrow, ventrally directed; posterior part (CA 3 b) large, with widely posteriorly projected triangular base. Posterior cardinal tooth (CP 5 b) long, straight, moderately solid, parallel to nymph. Anterior lateral tooth (LAI) short, narrow. Posterior lateral tooth (LPI) elongated, narrow, close to dorsal margin. Left valve (Fig. 3 M): two diverging cardinal teeth; the anterior (CA 2 a) small, triangular, ventrally directed, with subcentral cusp, one third the size of the posterior one (CP 4 b). Posterior cardinal nearly straight, distally widened. Anterior lateral (LAII) and posterior lateral (LPII) small. Ligament external, located on a nymph which extends for two thirds the length of posterodorsal margin (Figs. 3 I, M, N). Anatomy (Fig. 9 B): Mantle margin with a large inhalant-pedal aperture, extending for about 4 / 5 of mantle margin length, separated from a relatively large posterior exhalant opening by a short suture. Transverse section of anterior and posterior adductor muscles large, the former reniform, the latter ovate. Inner and outer demibranchs posteriorly fused with each other and with mantle margin. Outer demibranch two thirds the size of inner one, showing 202 filaments in a 18 mm long specimen; ascending and descending lamellae equally developed. Inner demibranch with 214 filaments; ascending lamella as high as descending lamella. Labial palps with ill defined sorting ridges. Foot with posterior byssal gland. Remarks: Dell (1964) suggested that Cyclocardia thouarsii and C. velutina could correspond to variations of a single species. From the present study it is clear that they are two different species: Cyclocardia thouarsii is more laterally compressed, has a more elongated shell outline, it is sculptured with lower radial ribs, the beaks are more anteriorly placed, and the hinge plate is narrower, with more delicate teeth than C. velutina . Cyclocardia thouarsii was described by d’Orbigny in the “Voyage dans l’Amerique Méridionale…” page 580, and illustrated on plate 84. According to Sherborn & Griffin (1934) and Cowie & Thiengo (2003), that page was published in 1845; however, none of these papers refer to the date of publication of plate 84, and no other reference is available to date this plate. According to the ICZN (1999), Art. 21.7, the date of publication should be regarded as the “earliest date on which the work, or part of it, is demonstrated to be in existence as a published work”. Under this criterion, we consider that the date of publication for the species corresponds to the date of publication of the text. : Published as part of Güller, Marina & Zelaya, Diego G., 2013, The Families Carditidae and Condylocardiidae in the Magellan and Perú – Chile provinces (Bivalvia: Carditoidea), pp. 201-239 in Zootaxa 3682 (2) on pages 207-209, DOI: 10.11646/zootaxa.3682.2.1, http://zenodo.org/record/217328 : {"references": ["Tryon, G. W. Jr. (1872) Catalogue of the Recent species of the family Cardiidae. American Journal of Conchology, 7, 259 - 275.", "Rochebrune, A. T. & Mabille, J. (1889) Mollusques. Mission Scientifique du Cap Horn 1882 - 1883, 6, Zoologie 2. Gauthier- Villars, Paris, 143 pp., pls. 1 - 9. http: // dx. doi. org / 10.5962 / bhl. title. 2480", "Melvill, J. C. & Standen, R. (1912) The marine Mollusca of the Scottish National Antarctic Expedition. Part II. Transactions of the Royal Society of Edinburgh, 48, 333 - 366.", "Soot-Ryen, T. (1959) Reports of the Lund University Chile Expedition 1948 - 1949. 35. Pelecypoda. Lunds Universitets Arsskrift, N. F. Avd. 2, 55, 3 - 86, 4 pls.", "Dell, R. K. (1964) Antarctic and subantarctic Mollusca: Amphineura, Scaphopoda and Bivalvia. Discovery Reports, 33, 93 - 250, pls. 2 - 7.", "Sherborn, C. D. & Griffin, F. J. (1934) On the dates of publication of the Natural History portions of Alcide d'Orbigny's \" Voyage Amerique Meridionale \". Annals and Magazin of Natural History, 10, 130 - 134. http: // dx. doi. org / 10.1080 / 00222933408654798", "Cowie, R. H. & Thiengo, S. C. (2003) The apple snails of the Americas (Mollusca: Gastropoda: Ampullariidae: Asolene, Felipponea, Marsia, Pomacea, Pomella): a nomenclatural and type catalogue. Malacologia, 45, 41 - 100."]} Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Buff ENVELOPE(-64.567,-64.567,-64.833,-64.833) Cape Horn ENVELOPE(-135.021,-135.021,61.583,61.583) Gauthier ENVELOPE(-63.583,-63.583,-64.833,-64.833) Burdwood Bank ENVELOPE(-59.000,-59.000,-54.250,-54.250) Ryen ENVELOPE(15.401,15.401,68.007,68.007) |