Obelia geniculata
Creators
Description
Obelia geniculata
(fig. 4I)
Sertularia geniculata Linnaeus, 1758: 812.
Obelia geniculata.— Hincks, 1868: 149, pl. 25 figs 1,1a.— Patriti, 1970: 35, figs 44, 44bis.— Cornelius, 1975a: 272, figs 1a–d, 5a–c.— Cornelius, 1982: 119 –120.—Cornelius, 1990: 550–557.— Vervoort, 1993: 558 –559.— Cornelius, 1995b: 301 –303, fig. 70.— Medel & López-González, 1996: 206.— Medel & Vervoort, 2000: 54 –58.—Peña Cantero & García Carrascosa, 2002: 162–163, fig. 31d.— Govindarajan et al., 2005: 213 –222, fig. 1.
Laomedea geniculata.— Da Cunha, 1944: 61, fig. 35.
Material studied. Ormonde, stn 4: fertile colonies, very abundant on the brown alga Laminaria ochroleuca Bachelot de la Pylaie; DBUA 1524.01.
Remarks. Oceana (2005) reported an Obelia species, possibly corresponding to O. geniculata. The present manuscript confirms this species presence at the top of the Ormonde seamount.
Reported distribution. Eastern Atlantic.—Widespread, from Iceland (Broch 1918) to South Africa (Millard 1975).
Mediterranean.—Widespread (e.g. García Corrales et al. 1978; Peña Cantero & García Carrascosa 2002).
Elsewhere.—Historically considered a cosmopolitan species (e.g. Picard 1958a; Millard 1975), but Govindarajan et al. (2005) found considerable genetic differentiation, indicative of cryptic speciation, between specimens from the North Atlantic, Japan and New Zealand. O. geniculata was originally described from Dover, UK (Linnaeus 1758; Cornelius 1975a) being thus probable that the Gorringe specimens are correctly identified.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Campanulariidae
- Genus
- Obelia
- Kingdom
- Animalia
- Order
- Leptothecata
- Phylum
- Cnidaria
- Species
- geniculata
- Taxon rank
- species
References
- Linnaeus, C. (1758) Systema naturae per regna tria naturae, secundum classes, ordines, genera, species cum characteribus, differentiis, synonymis, locis. Editio decima, reformata. L. Salvii, Holmiae, 823 pp. http: // dx. doi. org / 10.5962 / bhl. title. 542
- Hincks, T. (1868) A history of the British hydroid zoophytes. London. John van Voorst, 1, i - lxviii, 1 - 338.
- Patriti, G. (1970) Catalogue des cnidaires et ctenaires des cotes Atlantiques marocaines. Travaux de l'Institut Scientifique Cherifien, Faculte de Sciences, Zoologie, 35, 1 - 149.
- Cornelius, P. F. S. (1975 a) The hydroid species of Obelia (Coelenterata, Hydrozoa: Campanulariidae), with notes on the medusa stage. Bulletin of the British Museum (Natural History), Zoology, 28, 249 - 293.
- Cornelius, P. F. S. (1982) Hydroids and medusae of the family Campanulariidae recorded from the eastern North Atlantic, with a world synopsis of genera. Bulletin of the British Museum (Natural History), Zoology, 37 - 148.
- Vervoort, W. (1993) Report on hydroids (Hydrozoa, Cnidaria) in the collection of the Zoological Museum, University of Tel- Aviv, Israel. Zoologische Meddedelingen, Leiden, 67 (40), 537 - 565.
- Cornelius, P. F. S. (1995 b) North-west European thecate hydroids and their medusae. Part 2. Sertulariidae to Campanulariidae. Synopses of the British Fauna, New Series, 50, 1 - 386.
- Medel, M. D. & Lopez-Gonzalez, P. J. (1996) Updated catalogue of hydrozoans of the Iberian Peninsula and Balearic Islands, with remarks on zoogeography and affinities. Scientia Marina, 60, 183 - 209.
- Medel, M. D. & Vervoort, W. (2000) Atlantic Haleciidae and Campanulariidae (Hydrozoa, Cnidaria) collected during the CANCAP and Mauritania-II expeditions of the National Museum of Natural History, Leiden, The Netherlands. Zoologische Verhandelingen, Leiden, 330, 1 - 68.
- Govindarajan, A. F., Halanych, K. M. & Cunningham, C. W. (2005) Mitochondrial evolution and phylogeography in the hydrozoan Obelia geniculata (Cnidaria). Marine Biology, 146, 213 - 222. http: // dx. doi. org / 10.1007 / s 00227 - 004 - 1434 - 3
- Da Cunha, A. X. (1944) Hidropolipos das costas de Portugal. Memorias e Estudos do Museu Zoologico da Universidade de Coimbra, 161, 1 - 101.
- Broch, H. (1918) Hydroida. (Part II). Danish " Ingolf " Expedition, 5, 1 - 206.
- Millard, N. A. H. (1975) Monograph on the Hydroida of southern Africa. Annals of the South African Museum, 68, 1 - 513.
- Garcia Corrales, P., Aguirre Inchaurbe, A. & Gonzalez Mora, D. (1978) Contribucion al conocimiento de los hidrozoos de las costas espanolas. Parte I: Halecidos, campanularidos y plumularidos. Boletin - Instituto Espanol de Oceanografia, 4 (253), 5 - 73.
- Picard, J. (1958 a) Origines et affinites de la faune d'hydropolypes (Gymnoblastes et Calyptoblastes) et d'hydromeduses (Anthomeduses et Leptomeduses) de la Mediterranee. Rapports et Proces-verbaux des Reunions de la Commission Internationale pour l'Exploration Scientifique que de la Mer Mediterranee, 14, 187 - 199.