Halecium labrosum Alder 1859

• Main Authors: Gravili, Cinzia, Vito, Doris De, Camillo, Cristina Gioia Di, Martell, Luis, Piraino, Stefano, Boero, Ferdinando
• Format: Text
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Haleciidae; Halecium; Halecium labrosum; Arctic; Pacific; Gonzalez; Genova; Lopez; Bianchi; Promontorio; Vito
• Online Access: https://dx.doi.org/10.5281/zenodo.6107086; https://zenodo.org/record/6107086

Halecium labrosum Alder, 1859 Fig. 62 A–D See Schuchert (2005 b) for a complete synonymy. Material examined. HCUS-S 0 69 (Hydrozoa Collection, University of Salento—fauna of the Salento Peninsula). Description (based on our own observations; Schuchert 2005 b): Hydroid. Colonies erect; hydrocauli polysiphonic, up to 100 mm high, irregularly branched, mainly in one plane, internodes provided with irregular undulations, each inserted laterally at distal part of previous internode with characteristic upward curve near base, nodes alternately oblique; hydrotheca at the end of internode, short, with everted rim recurved downwards, renovations frequent; gonothecae borne on short 1–2 ringed pedicels, without gonophoral hydranths, male ones oval and elongated, with small distal aperture, females ovoid, large, aperture on short collar. Cnidome. Microbasic mastigophores. Habitat type. Hard-bottom, coralligenous, semi-dark cave (depth range: 0–40 m, but also down to 700 m) (Boero & Fresi 1986; Gili 1986; Puce et al . 2009; Mastrototaro et al . 2010). Substrate. Algae, concretions, hydroids, bryozoans, barnacles, cold water corals. Seasonality. September–November (Boero & Fresi 1986); April, May, July–August, November–February (Llobet i Nidal 1987); February (Puce et al . 2009) in the western Mediterranean; April, September (Mastrototaro et al. 2010), December (this study) in Salento waters. Reproductive period. September–November (Boero & Fresi 1986); September, October, December, February (Bouillon et al . 2004) in the Mediterranean Sea. Distribution. Arctic-boreal species, eastern and western Atlantic, Mediterranean, northern Pacific (Cornelius 1995; Medel & López-González 1996; Bouillon et al. 2004; Schuchert 2005 b). Records in Salento. Rare at S. Maria di Leuca (Mastrototaro et al . 2010). Remarks. For Schuchert (2005 b), following Broch (1918), it is possible that at least some Mediterranean records of H. labrosum belong to other species of Halecium, particularly to H. mediterraneum . References. Picard (1958 a), Rossi (1961, 1971), Sarà et al. (1978), Morri & Bianchi (1983), Boero & Fresi (1986), Gili (1986), Llobet et al. (1986, 1991), Llobet i Nidal (1987), Gili et al. (1989), Medel & López-González (1996), Bouillon et al. (2004), Schuchert (2005 b), Puce et al. (2009), Mastrototaro et al. (2010). : Published as part of Gravili, Cinzia, Vito, Doris De, Camillo, Cristina Gioia Di, Martell, Luis, Piraino, Stefano & Boero, Ferdinando, 2015, The non-Siphonophoran Hydrozoa (Cnidaria) of Salento, Italy with notes on their life-cycles: an illustrated guide, pp. 1-187 in Zootaxa 3908 (1) on pages 89-90, DOI: 10.11646/zootaxa.3908.1.1, http://zenodo.org/record/242729 : {"references": ["Schuchert, P. (2005 b) Taxonomic revision and systematic notes on some Halecium species (Cnidaria, Hydrozoa). Journal of Natural History, 39 (8), 607 - 639. http: // dx. doi. org / 10.1080 / 00222930400001319", "Boero, F. & Fresi, E. (1986) Zonation and evolution of a Rocky bottom hydroid community. Marine Ecology, 7 (2), 123 - 150. http: // dx. doi. org / 10.1111 / j. 1439 - 0485.1986. tb 00152. x", "Cornelius, P. F. S. (1995) NorthWest European Thecate Hydroids and their Medusae. Synopses of the British Fauna, New Series, pt. 1 & 2, 1 - 347 & 1 - 386.", "Medel, M. D. & Lopez-Gonzalez, P. J. (1996) Updated catalogue of the Hydrozoans from the Iberian Peninsula and Balearic Islands with remarks on zoogeography and affinities. Scientia Marina, 60 (1), 183 - 209.", "Broch, H. (1918) Hydroida. (Part II). Danish Ingolf Expedition, 5 (7), 1 - 206.", "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 de la Mer Mediterranee Monaco, 14, 187 - 199.", "Rossi, L. (1961) Idroidi viventi sulle scogliere del promontorio di Portofino (Golfo di Genova). Annali del Museo Civico di Storia Naturale di Genova, 72, 68 - 85.", "Rossi, L. (1971) Guida a Cnidari e Ctenofori d'Italia. Quaderni della Civica Stazione Idrobiologica di Milano, 2, 1 - 101.", "Sara, M., Balduzzi, A., Boero, F., Pansini, M., Pessani, D. & Pronzato, R. (1978) Analisi di un popolamento bentonico di falesia del Promontorio di Portofino: dati preliminari. Bollettino dei Musei e degli Istituti Biologici dell'Universita di Genova, 46, 119 - 137.", "Llobet, I., Gili, J. M. & Barange, M. (1986) Estudio de una poblacion de hidropolipos epibiontes de Halimeda tuna. Study of a population of epibiont hydropolyps on Halimeda tuna. Miscelanea Zoologica Barcelona, 10, 33 - 43.", "Llobet, I., Gili, J. M. & Hughes, R. G. (1991) Horizontal, vertical and seasonal distributions of epiphytic Hydrozoa on the alga Halimeda tuna in the northwestern Mediterranean Sea. Marine Biology Berlin, 110 (1), 151 - 159. http: // dx. doi. org / 10.1007 / bf 01313102"]}