Aulactinia sulcata

• Main Authors: Rodríguez, Estefanía, López-González, Pablo J.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Anthozoa; Actiniaria; Actiniidae; Aulactinia; Aulactinia sulcata; Antarctic; Victoria Land; McMurdo Sound; Italica; Fosse; Stephenson; Adare; Cape Adare; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/5261146; https://doi.org/10.5281/zenodo.5261146

Aulactinia sulcata (Clubb, 1902) (Figs. 3–5; Table 2; Appx. 1, 2) Urticina sulcata Clubb, 1902. Urticina carlgreni Clubb, 1902. Bunodactis sulcata: Carlgren 1924 a; Carlgren 1927; Carlgren 1928; Carlgren & Stephenson 1929; Carlgren 1949. Bunodactis carlgreni: Carlgren 1924; Carlgren 1949. Aulactinia sulcata: Dunn 1983. MATERIAL EXAMINED Polarstern ANT XVII/3: stn. PS56/165 (BEIM: ANT-4551, 1 specimen). Polarstern ANT XIX/3: stn. PS61/068-1 (AMNH-4090, 1 specimen); stn. PS61/072-1 (AMNH-4032, 1 specimen); stn. PS61/101-1 (AMNH-4029, 1 specimen); stn. PS61/126-1 (BEIM: ANT-4008, 1 specimen). ADDITIONAL MATERIAL EXAMINED Aulactinia sulcata (Clubb, 1902). BEIM: ANT-3297. “VLT-2004 (Italica XIX), stn. A-2, Cape Adare, Victoria Land, 71°17.1’S 170°38.4’E, 416–421 m, 14/02/2004, Agassiz” (1 specimen). DIAGNOSIS Pedal disc well developed, to 29 mm in diameter; distinct limbus. Column cylindrical to dome shaped in preserved specimens, to 39 mm height and 37 mm diameter. Column with 48 longitudinal rows of simple verrucae with small stones and foreign debris attached, each row coinciding with one endo- or exo-coel. Distal column of female specimens with a deep fold that forms brooding cavity. No marginal pseudospherules. Deep fosse. Oral disc usually completely covered in preserved specimens by 48 digitiform tentacles, each with terminal pore. Column and tentacles dark pink in preserved specimens, sometimes colour obscured by adhered material. More mesenteries proximally than distally, to three cycles, regularly arranged; all cycles fertile but only first and second cycles perfect. Retractor muscles restricted, parietobasilar muscles with thin, detached pennons. Marginal sphincter muscle endodermal, strong, and circumscribed. Cnidom: spirocysts, basitrichs, and microbasic b- and p - mastigophores. For a complete description of Aulactinia sulcata, see Dunn (1983). GEOGRAPHIC AND BATHYMETRIC DISTRIBUTION Aulactinia sulcata is known in three separated areas in Antarctica: McMurdo Sound, off the tip of Antarctic ...