Tricyclusa singularis (Schulze, 1876) 
AphiaID: 235735

Classification: Biota > Animalia > Cnidaria > Hydrozoa > Hydroidolina > Anthoathecata > Capitata > Tricyclusidae > Tricyclusa

Status		accepted
Record status		Checked by Taxonomic Editor
Rank		Species
Parent		Tricyclusa Stechow, 1919
Synonymised taxa		Tiarella singularis Schulze, 1876 (basionym)
Sources		original description: Schulze, F.E. (1876). Tiarella singularis, ein neuer Hydroidpolyp. Z. wiss. Zool. 27: 403-416 (look up in IMIS) page(s): 403 [details] additional source: Picard, J., 1958. Origines et affinités de la faune d'hydropolypes (Gymnoblastes et Calyptoblastes) et d'hydroméduses (Anthoméduses et Leptoméduses) de la Méditerranée. Rapp. P.-v. Réun. Commn int. Explor. scient. Mer Méditerr., 14: 187-199. [details] additional source: Boero, F. & J. Bouillon, 1993. Zoogeography and life cycle patterns of Mediterranean hydromedusae (Cnidaria). Biol. J. Linn. Soc., 48(3): 239-266. (look up in IMIS) [details] additional source: Avian, M.; Boero, F.; Mills, C.E.; Rossi, L.; Rottini-Sandrini, L. (1995). Cnidaria, Ctenophora. Checklist delle specie della fauna italiana, 3. 1-38 pp. (look up in IMIS) [details] additional source: Rees (1941) [details] additional source: Rees (1957). [details] additional source: Bouillon, J.; Medel, M.D.; Pagès, F.; Gili, J.-M.; Boero, F.; Gravili, C. (2004). Fauna of the Mediterranean Hydrozoa. Scientia Marina (Barcelona), 68(Suppl. 2). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona, Spain. 5-449 pp. (look up in IMIS) [details] additional source: Petersen (1990) page(s): 146, Fig. 15. [details] redescription: Schuchert, P. 2006a. The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Capitata Part 1. Revue suisse de Zoologie 113: 325-410. page(s): 353 [details] redescription: Schuchert, P. 2012. North-West European Athecate Hydroids and their Medusae. Synopses of the British Fauna (New Series) 59. The Linnean Society of London, London, pp. i-viii, 1-364. page(s): 86 [details] from synonym: Schulze, F.E., 1876. Tiarella singularis, ein neuer Hydroidpolyp. Z. wiss. Zool. 27 : 403-416. page(s): 403 [details] [view taxon] [full text]
Environment		marine, brackish, fresh, terrestrial
Fossil range		recent only
Distribution		Adriatic Sea [details] Mediterranean Sea [details]
Links		To Biodiversity Heritage Library (1 publication) To Encyclopedia of Life
Notes		Basionym: Tiarella singularis Schulze, 1876. [details] Biology: Tricyclusa is a rather unique hydroid presenting a pedal disk comparable to what is found in some Limnomedusae hydroids (i.e. Oustromovia, Moerisia). In the northeastern Atlantic Tricyclusa appears in May-June attached to seaweeds and Zostera and they become generally very abundant during all spring period by forming asexual lateral polypoid buds resembling to actinulae giving rise to new colonies. The name actinulae, is however inadequate for these structure since they are merely polypoid buds, whereas true actinulae are sexual produce larvae. In July Tricyclusa gives rise to fixed gonophores and from August disappears during all winter. This seasonal appearance suggests that Tricyclusa has presumably an encysted winter stage, perhaps represented by the remaining of the pedal disk. [details] Diagnosis: Hydroid pear-shaped, with three whorls of capitate tentacles (oral, middle and proximal whorls). Between the middle and oral whorl the body narrows to form a slender neck. Four oral tentacles, each with a terminal knob of cnidocysts; six tentacles in the middle whorl; proximal whorl near the posterior end of the body, with 12 tentacles in two closely approximated whorls of six tentacles pointing upwards and six tentacles pointing downwards. Middle and proximal whorls of tentacles with two groups of cnidocysts on their distal half in addition to the terminal knob. Gonophores cryptomedusoids. [details] Distribution: Northeastern Atlantic. [details]
Image		Tricyclusa singularis added on 2006-12-14 - author: Schulze, F.E. qualitystatus: checked by Schuchert, Peter on 2013-02-28 16:31:00
LSID		urn:lsid:marinespecies.org:taxname:235735
Taxonomic Edit history		Date    action    by 2006-12-14 09:10:20Z   created   Gravili, Cinzia 2008-01-16 10:35:54Z   changed   van der Land, Jacob 2011-10-07 10:37:49Z   changed   Schuchert, Peter
		[Taxonomic tree] [Google] [Google scholar] [Google images]
		Citation: Schuchert, P. (2013). Tricyclusa singularis (Schulze, 1876). In: Schuchert, P. (2013) World Hydrozoa database. Accessed through: Schuchert, P. (2013) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=235735 on 2013-05-23