Clytia hemisphaerica
Creators
Description
Clytia hemisphaerica (Linnaeus, 1767)
Fig. 48
Medusa hemisphaerica Linnaeus, 1767: 1098 [medusa stage].
Clytia johnstoni.— Segerstedt, 1889: 11, 25.— Jäderholm, 1909: 61, pl. 5, fig. 12.
Clytia hemisphaerica.— Rees & Rowe, 1969: 16.— Cornelius, 1982: 75, fig. 9k.— Östman, 1999: 17.
Campanularia johnstoni.— Jägerskiöld, 1971: 61.
Clytia hemisphaerica form (or forma) johnstoni.— Östman, 1979a: 5; 1979b: 127, figs. 1, 2, 4, 5; 1982a: 156; 1983: 6.
Type locality. “ Habitat in Oceano Belgico ” (Linnaeus 1767: 1098).
Museum material. Kosterhavet, 58°50.278’N, 11°02.680’E, 13 m, 07.ix.2010, biological dredge, R / V Nereus, on algae, one stolonal colony, without gonophores, ROMIZ B3894.— Kosterhavet, 58°53.093’N, 11°05.668’E, 20– 30 m, 09.ix.2010, biological dredge, R / V Nereus, on algae, one stolonal colony, with gonophores, ROMIZ B3907.— Saltö naturreservat, outer ledge, 58°52’40”N, 11°06’53”E, <1 m, 11.ix.2010, collected manually, on red algae, two stolonal colonies, with gonophores, ROMIZ B3923.— Väderöarna, 58°34.931’N, 11°04.931’E, 121– 50 m, 13.ix.2010, biological dredge, R / V Nereus, on antenna of a decapod crustacean, one colony, with a few branched pedicels, up to 9 mm high, with gonophores, ROMIZ B3930.
Remarks. A comprehensive taxonomic overview of Clytia hemisphaerica (Linnaeus, 1767) was given by Cornelius (1982), and additional details were provided by Calder (1991). The sympatric C. gracilis (M. Sars, 1850) is similar, but its gonothecae have smooth rather than spirally ribbed walls. Nematocysts of the two species also differ (Östman 1979a). Östman added that colonies of C. gracilis are often branched, and hydrothecal cusps are sharppointed, whereas colonies of C. hemsphaerica are usually unbranched, and hydrothecal cusps are broad and symmetrical. Comments on C. gigantea (Hincks, 1866), sometimes included as a synonym, are given above. Although C. hemisphaerica is generally reported to be virtually cosmopolitan, Cornelius (1995b: 254) is probably correct that “nearly all” records of species of the taxonomically difficult genus Clytia Lamouroux, 1812 are suspect.
Clytia hemisphaerica has been reported numerous times along the west coast of Sweden (see Checklist). Hydroids of the species die back during winter in nearby waters of Denmark (Kramp 1935b: 100, as Campanularia johnstoni Alder, 1856) and the Oslofjord, Norway (Christiansen 1972: 293–294, as Clytia johnstoni).
Reported distribution. West coast of Sweden.—From the border with Norway to southern Kattegat (Jägerskiöld 1971).
Elsewhere.—North Atlantic from Svalbard and Finnmark to the Mediterranean Sea in Europe (Christiansen 1972; Cornelius 1982), and from Labrador to Florida in North America (Calder 2004). Reported to be circumglobal (Calder 1991).
Notes
Files
Files
(3.5 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:cccd9ca2e13d4671e007f2119c7ae157
|
3.5 kB | Download |
System files
(31.5 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:b971f3028ea36cd96d45c6b934e7a05b
|
31.5 kB | Download |
Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: 10.5281/zenodo.5247792 (DOI)
- Is part of
- Journal article: 10.11646/zootaxa.3171.1.1 (DOI)
- Journal article: http://zenodo.org/record/5247704 (URL)
- Journal article: http://publication.plazi.org/id/FFF15C06D002FF8CFFF5FFADFF902B0F (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/03C8247ED02CFFA3FF62FAE0FEAA2984 (URL)
Biodiversity
- Collection code
- R, V , ROMIZ
- Event date
- 2010-09-07 , 2010-09-09 , 2010-09-11 , 2010-09-13
- Family
- Campanulariidae
- Genus
- Clytia
- Kingdom
- Animalia
- Material sample ID
- B3894 , B3907 , B3923 , B3930
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Linnaeus
- Species
- hemisphaerica
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 2010-09-07 , 2010-09-09 , 2010-09-11 , 2010-09-13
- Taxonomic concept label
- Clytia hemisphaerica (Linnaeus, 1767) sec. Calder, 2012
References
- Linnaeus, C. (1767) Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Pars II. Editio duodecima, reformata. Laurentii Salvii, Holmiae, pp. 533 - 1317.
- Segerstedt, M. (1889) Bidrag till kannedomen om hydroid-faunan vid Sveriges vestkust. Bihang till Kongliga Svenska Vetenskaps-Akademiens Handlingar, 14, Afdelning 4, 4, 1 - 28.
- Jaderholm, E. (1909) Northern and Arctic invertebrates in the collection of the Swedish State Museum (Riksmuseum). IV. Hydroiden. Kungliga Svenska Vetenskapsakademiens Handlingar, ny foljd, 45 (1), 1 - 124.
- Rees, W. J. & Rowe, M. (1969) Hydroids of the Swedish west coast. Acta Regiae Societatis Scientiarum et Litterarum Gothobergensis, Zoologica, 3: 1 - 23.
- 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, 37 - 148.
- Ostman, C. (1999) Nematocysts and their value as taxonomic parameters within the Campanulariidae (Hydrozoa). A review based on light and scanning electron microscopy. Zoosystematica Rossica, Supplement 1, 17 - 28.
- Jagerskiold, L. A. (1971) A survey of the marine benthonic macro-fauna along the Swedish west coast 1921 - 1938. Acta Regiae Societatis Scientiarum et Litterarum Gothobergensis, Zoologica, 6, 1 - 146.
- Ostman, C. (1979 a) Two types of nematocysts in Campanulariidae (Cnidaria, Hydrozoa) studied by light and scanning electron microscopy. Zoologica Scripta, 8, 5 - 12.
- Ostman, C. (1979 b) Nematocysts in the Phialidium medusae of Clytia hemisphaerica (Hydrozoa, Campanulariidae) studied by light and scanning electron microscopy. Zoon, 7, 125 - 142.
- Calder, D. R. (1991) Shallow-water hydroids of Bermuda. The Thecatae, exclusive of Plumularioidea. Royal Ontario Museum, Life Sciences Contributions, 154, 1 - 140.
- Sars, M. (1850) Beretning om en i Sommeren 1849 foretagen zoologisk Reise i Lofoten og Finmarken. Nyt Magazin for Naturvidenskaberne, 6, 121 - 211. [Note: dating of this article follows Sherborn (1926: 2527), with additional details in Cornelius (1977: 524, 1982: 137)].
- Hincks, T. (1866) On new British Hydroida. Annals and Magazine of Natural History, third series, 18, 296 - 299.
- Cornelius, P. F. S. (1995 b) North-west European thecate hydroids and their medusae. Part 2. Sertulariidae to Campanulariidae. Synopses of the British Fauna, n. s., 50, 386 pp.
- Lamouroux, J. V. F. (1812) Extrait d'un memoire sur la classification des polypiers coralligenes non entierement pierreux. Nouveau Bulletin des Sciences, par la Societe Philomatique de Paris, 3, 181 - 188.
- Kramp, P. L. (1935 b) Polypdyr (Coelenterata) I. Ferskvandspolypper og goplepolypper. Danmarks Fauna, 41, 1 - 207.
- Alder, J. (1856) A notice of some new genera and species of British hydroid zoophytes. Annals and Magazine of Natural History, series 2, 18, 353 - 362.
- Christiansen, B. O. (1972) The hydroid fauna of the Oslo Fiord in Norway. Norwegian Journal of Zoology, 20, 279 - 310.
- Calder, D. R. (2004) Subtidal hydroids (Cnidaria) of Northumberland Strait, Atlantic Canada, with observations on their life cycles and distributions. Canadian Field-Naturalist, 117, 555 - 564. (Although dated 2003, this article did not appear until 2004).