Sertularella tenella
Creators
Description
Sertularella tenella (Alder, 1856)
Fig. 38
Sertularia tenella Alder, 1856: 357, pl. 13, figs. 3–6.
Sertularella tenella.— Segerstedt, 1889: 17, 26.— Jäderholm, 1909: 102, pl. 11, fig. 15.— Kramp, 1935b: 178, fig. 73C.— Rees & Rowe, 1969: 19.— Jägerskiöld, 1971: 64.— Cornelius, 1979: 292; 1995b: 81, fig. 19A.
Type locality. UK: England, Northumberland (Cornelius & Garfath 1980: 285).
Museum material. Kosterhavet, 58°53.039’N, 11°05.602’E, 160– 30 m, 06.ix.2010, biological dredge, R / V Nereus, three colonies, with one on a shell fragment, one on Abietinaria abietina, and one on a gastropod egg case, up to 1.2 cm high, without gonophores, ROMIZ B3881.
Remarks. Hydroids of Sertularella tenella Alder, 1856 somewhat resemble those of S. rugosa (Linnaeus, 1758) in being relatively small and in having annulated hydrothecae. Cornelius (1995b: 82) listed six characters useful in distinguishing S. tenella from its congener: (1) the aperture is perpendicular to the hydrothecal axis rather than being outward-inclined, (2) hydrothecae are widely separated vertically rather than being bunched together, (3) a notch is absent just below the rim on the abcauline wall of the hydrotheca, (4) hydrothecae are adnate for about ¼ rather than ¼–½ of their length, (5) the number of hydrothecal annulations is 5–6 rather than 3–4, and (6) its typical substrate is usually other hydroids rather than flustrid bryozoans.
Records indicate that S. tenella is common along the coast of western Sweden from the mid-Kattegat northwards (see Checklist). By contrast, it is reportedly infrequent in Danish waters (Kramp 1935b) and in the Oslofjord (Christiansen 1972).
Records of this typically boreal species from the Caribbean region (e.g., Fraser 1944) are almost certainly erroneous.
Reported distribution. West coast of Sweden.—From the border with Norway to mid-Kattegat (Jägerskiöld 1971).
FIGURE 39. Sertularia tenera: part of branch with two pairs of subopposite hydrothecae, ROMIZ B3927. Scale equals 0.5 mm.
Elsewhere.—In the North Atlantic from the Barents Sea and Svalbard to the Atlantic coast of France (Cornelius 1995b; Ronowicz 2007), and from Hudson Bay and Greenland to Cape Cod (Fraser 1944; Calder 1970). In the North Pacific from the Bering Sea southeastwards to California and southwestwards to Japan (Fraser 1937; Yamada 1959; Naumov 1960).
Notes
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Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: 10.5281/zenodo.5247774 (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/03C8247ED027FFAAFF62FBDBFE7F2FD9 (URL)
Biodiversity
- Family
- Sertularellidae
- Genus
- Sertularella
- Kingdom
- Animalia
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Alder
- Species
- tenella
- Taxon rank
- species
- Type status
- holotype
- Taxonomic concept label
- Sertularella tenella (Alder, 1856) sec. Calder, 2012
References
- 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.
- 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.
- Kramp, P. L. (1935 b) Polypdyr (Coelenterata) I. Ferskvandspolypper og goplepolypper. Danmarks Fauna, 41, 1 - 207.
- Rees, W. J. & Rowe, M. (1969) Hydroids of the Swedish west coast. Acta Regiae Societatis Scientiarum et Litterarum Gothobergensis, Zoologica, 3: 1 - 23.
- 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.
- Cornelius, P. F. S. (1979) A revision of the species of Sertulariidae (Coelenterata: Hydroida) recorded from Britain and nearby seas. Bulletin of the British Museum (Natural History), Zoology, 34, 243 - 321.
- 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.
- Cornelius, P. F. S. & Garfath, J. B. (1980) The coelenterate taxa of Joshua Alder. Bulletin of the British Museum (Natural History), Zoology, 39, 273 - 291.
- Linnaeus, C. (1758) Systema naturae per regna tria naturae, secundum classes, ordines, genera, species cum characteribus, differentiis, synonymis, locis. Editio decima, reformata. Laurentii Salvii, Holmiae, 823 pp.
- Christiansen, B. O. (1972) The hydroid fauna of the Oslo Fiord in Norway. Norwegian Journal of Zoology, 20, 279 - 310.
- Fraser, C. M. (1944) Hydroids of the Atlantic coast of North America. University of Toronto Press, Toronto, 451 pp.
- Ronowicz, M. (2007) Benthic hydroids (Cnidaria: Hydrozoa) from Svalbard waters - biodiversity and distribution. Journal of the Marine Biological Association of the United Kingdom, 87, 1089 - 1094.
- Calder, D. R. (1970) Thecate hydroids from the shelf waters of northern Canada. Journal of the Fisheries Research Board of Canada, 27, 1501 - 1547.
- Fraser, C. M. (1937) Hydroids of the Pacific coast of Canada and the United States. University of Toronto Press, Toronto, 207 pp.
- Yamada, M. (1959) Hydroid fauna of Japanese and its adjacent waters. Publications from the Akkeshi Marine Biological Station, 9, 1 - 101.
- Naumov, D. V. (1960) Gidroidy i gidromeduzy morskikh, solonovatovodnykh i presnovodnykh basseinov SSSR. Akademiya Nauk SSSR, Opredeliteli po Faune SSSR, 70, 1 - 626.