Obelia geniculata
Creators
Description
Obelia geniculata (Linnaeus, 1758)
(fig. 21K–L, table 40)
Sertularia geniculata Linnaeus 1758: 812.
Obelia geniculata: Hincks, 1868: 149, pl. 25 figs 1, 1A; Hartlaub, 1901: 362; Hartlaub, 1905: 581, fig. D 2; Nutting, 1915: 73, pl. 18 figs 1–5; Stechow, 1919: 50; 1923: 114; Fraser, 1944: 158, pl. 28 fig. 130; Russell, 1953: 302, fig. 185A; Ralph, 1957: 831, fig. 4I; Naumov, 1969: 282, figs 147–148; Calder, 1970: 1522, pl. 4 fig. 7; 1971: 55, pl. 4C; 1975: 303, fig. 4E–F; Cornelius, 1975: 272, figs 1, 5; Millard, 1975: 229, fig. 75A–B; Stepanjants, 1979: 36, pl. 5 fig. 7; Morri, 1981: 69, fig. 22; Cornelius, 1982: 119; Hirohito, 1983: 17; Gili et al., 1989: 108, fig. 32C; El Beshbeeshy, 1991: 114, fig. 26; Cornelius, 1995b: 301, fig. 70; Hirohito, 1995 (English text): 76, fig. 22A–B; Migotto, 1996: 90, fig. 16E; Ramil et al., 1998a: 200; Medel & Vervoort, 2000: 54; Schuchert, 2001b: 155, fig. 135; Peña Cantero & García Carrascosa, 2002: 162, fig. 31D; Vervoort & Watson, 2003: 427, fig. 104F–H; Bouillon et al., 2004: 200, figs 114H–I, 115A–E; Watson, 2005: 583.
Obelia geniculata var. subsessilis Jäderholm, 1904a: 2, fig. 2.
Laomedea geniculata: Leloup, 1974: 19, fig. 16.
Material examined. Stn. CHL 02 – 04.iii.2005, 13– 20 m, S44: one sterile colony, about 1 cm high, on Macrocystis pyrifera (MHNG INVE 53210). Stn. COM 08 —03.v.2005, 5– 8 m, S39: one fertile colony, 1–2 cm high, on Macrocystis pyrifera (MHNG INVE 53202). Stn. COM 09 —04.v.2005, 5– 8 m, S31: one fertile colony, 1–2 cm high, on Macrocystis pyrifera, 1 slide (MHNG INVE 53188). Stn. COM 13 —25.i.2006, 25– 32 m, S99: several fertile colonies up to 1.5 cm high, on Macrocystis pyrifera (MHNG INVE 53353). Stn. COF — 16.iii.2006, S138 (3 m): a fertile colony, on Macrocystis pyrifera (MHNG INVE 53424); S119 (4 m): a fertile colony, on Macrocystis pyrifera (MHNG INVE 53375).
Type locality. Dover, Kent, United Kingdom.
Remarks. For descriptions of this species, see Cornelius (1982, 1995b). An extensive synonymy is provided by Cornelius (1975) and Medel & Vervoort (2000).
The present material is characterized by being occasionally branched and having moderate thickening of the perisarc (63–130 µm on thickened side, and 13–27 µm on opposite side of internodes).
World distribution. Near-cosmopolitan, penetrating at high latitudes in the northern hemisphere and into sub-Antarctic waters in the southern hemisphere (Medel & Vervoort, 2000).
Records from Chile. This species was previously reported from Canal Beagle (Hartlaub 1904), Corral (Jäderholm 1904a), Valparaíso, Talcahuano, Canal Smyth, Strait of Magellan, Islas Navarino and Lennox (Hartlaub 1905), Tocopilla, Archipelago de los Chonos (Leloup 1974). The present records are roughly from 43°10' S to 48°10' S.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Campanulariidae
- Genus
- Obelia
- Kingdom
- Animalia
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Linnaeus
- Species
- geniculata
- Taxon rank
- species
- Type status
- holotype
- Taxonomic concept label
- Obelia geniculata (Linnaeus, 1758) sec. Galea, 2007
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, 1 - 823.
- Hincks, T. (1868) A history of British hydroid zoophytes. John van Voorst, London, 338 pp.
- Hartlaub, C. (1901) Hydroiden aus dem Stillen Ocean. Ergebnisse einer Reise nach dem Pacific (Schauinsland 1896 - 97). Zoologische Jahrbucher, Abtheilung fur Systematik, Geographie und Biologie der Tiere, 14 (6), 349 - 379.
- Hartlaub, C. (1905) Die Hydroiden der Magalhaensischen Region und chilenischen Kuste. In: Fauna chilensis. Zoologische Jahrbucher, Suppl. 6 (3), 497 - 714.
- Nutting, C. C. (1915) American hydroids. Part III. The Campanularidae and Bonneviellidae. Special Bulletin of the United States National Museum, 4 (3), 1 - 126.
- Stechow, E. (1919) Zur Kenntnis des Hydroidenfauna des Mittelmeeres, Amerikas und anderer Gebiete. Zoologische Jahrbucher, Systematik, 42 (1), 1 - 172.
- Stechow, E. (1923) Zur Kenntnis des Hydroidenfauna des Mittelmeeres, Amerikas und anderer Gebiete. II. Teil. Zoologische Jahrbucher, Systematik, 47 (1), 29 - 270.
- Fraser, C. M. (1944) Hydroids of the Atlantic coast of North America. The University of Toronto Press, 1 - 451.
- Russell, F. S. (1953) The Medusae of the British Isles Vol. I: Anthomedusae, Leptomedusae, Limnomedusae, Trachymedusae, and Narcomedusae. Cambridge University Press, Cambridge, 530 pp.
- Ralph, P. M. (1957) New Zealand thecate hydroids. Part I. Campanulariidae and Campanulinidae. Transactions of the Royal Society of New Zealand, 84 (4), 811 - 854.
- Naumov, D. V. (1969) Hydroids and hydromedusae of the USSR. Translated from Russian. Israel Program for Scientific Translation, Jerusalem, pp. 1 - 631.
- Calder, D. R. (1970) Thecate hydroids from the shelf waters of northern Canada. Journal of the Fisheries Research Board of Canada, 27, 1501 - 1547.
- Cornelius, P. F. S. (1975) The hydroid species of Obelia (Coelenterata, Hydrozoa: Campanulariidae), with notes on the medusa stage. Bulletin of the British Museum (Natural History), Zoology, 28 (6), 251 - 293.
- Millard, N. A. H. (1975) Monograph on the Hydroida of southern Africa. Annals of the South African Museum, 68, 1 - 513.
- Stepanjants, S. D. (1979) Gidroidy vod antarktiki i subantarktiki. In: Rezul'taty biologicheskikh issledovanii sovetskikh antarkticheskikh ekspeditsii, 6. Issledovaniya Fauny Morei, 22 (30), 1 - 99.
- Morri, C. (1981) Idrozoi lagunari. In: Guide per il reconoscimento delle specie animali delle acque lagunari e costiere italiane. Consiglio Nazionale delle Ricerche, Roma, pp. 1 - 109.
- 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, 42 (2), 37 - 148.
- Gili, J. M., Vervoort, W. & Pages, F. (1989) Hydroids from the west African coast: Guinea Bissau, Namibia and South Africa. Scientia Marina, 53 (1), 67 - 112.
- El Beshbeeshy, M. (1991) Systematische, Morphologische und Zoogeographische Untersuchungen an den Thekaten Hydroiden des Patagonischen Schelfs. Dissertation, Universitat Hamburg, 390 p.
- Cornelius, P. F. S. (1995 b) North-west European thecate hydroids and their medusae. Part 2. Sertulariidae to Campanulariidae. Synopses of the British fauna, 50, 1 - 386.
- Migotto, A. E. (1996) Benthic shallow-water hydroids (Cnidaria, Hydrozoa) of the coast of Sao Sebastiao, Brazil, including a checklist of Brazilian hydroids. Zoologische Verhandelingen, Leiden, 306, 1 - 125.
- 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.
- Schuchert, P. (2001 b) Survey of the family Corynidae (Cnidaria, Hydrozoa). Revue Suisse de Zoologie, 108 (4), 739 - 878.
- Vervoort, W. & Watson, J. E. (2003) The marine fauna of New Zealand: Leptothecata (Cnidaria: Hydrozoa) (thecate hydroids). NIWA Biodiversity Memoir, 119, 1 - 538.
- Bouillon, J., Medel, M. D., Pages, F., Gili, J. M., Boero, F. & Gravili, C. (2004) Fauna of the Mediterranean Hydrozoa. Scientia Marina, 68 (Suppl. 2), 1 - 438.
- Watson, J. E. (2005) Hydroids of the Archipelago of the Recherche and Esperance, western Australia: annotated list, redescription of species and description of new species. In: The Marine Flora and fauna of Esperance, Western Australia. Western Australian Museum, Perth, pp. 495 - 611.
- Jaderholm, E. (1904 a) Hydroiden aus den Kusten von Chili. Arkiv for Zoologi, 2 (3), 1 - 9.
- Leloup, E. (1974) Hydropolypes calyptoblastiques du Chili. Report no. 48 of the Lund University Chile Expedition 1948 - 1949. Sarsia, 55, 1 - 61.
- Hartlaub, C. (1904) Hydroiden. In: Expedition Antarctique Belge. Resultats du voyage du S. Y. Belgica en 1897 - 99. Rapports Scientifiques, Zoologie, 1 - 19.