New record of the sea anemone Kadosactis antarctica (Carlgren, 1928): re-description of an Antarctic deep-sea sea anemone, and a discussion of its generic and familial placement

• Published in: Helgoland Marine Research
• Main Authors: Rodríguez, Estefanía, López-González, Pablo J.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Springer 2005
• Subjects: Kadosactis; Kadosactidae; Sagartiogeton; Actiniaria; Deep-sea; South Shetland Islands; Antarctic; Scotia Sea; Antarc*; Antarctica; antarcticus
• Online Access: http://hdl.handle.net/10261/133662; https://doi.org/10.1007/s10152-005-0005-4

9 pages, 6 figures, 1 table Sagartiogeton antarcticus Carlgren, 1928 is an Antarctic deep-sea species of sea anemone only known from its holotype. The species has been assigned to the genera Sagartiogeton and Kadosactis, and is currently placed within the family Kadosactidae Riemann-Zürneck, 1991. Kadosactis antarctica is re-described based on 11 specimens collected during the cruise of the R/V Polarstern ANT XIX/3 (ANDEEP-I) to the Scotia Sea and off the South Shetland Islands (Antarctica). The description includes a complete account of cnidae and photographs. Because the mesogloea is thickened on the aboral surface on the base of the tentacles, this feature becomes a generic character of Kadosactis rather than a differential specific character among the species of the genus as previously proposed. Furthermore, the known distribution of the species is enlarged to include the southern branch of the Scotia Sea. © Springer-Verlag and AWI 2005 Support was provided by a MCT-CSIC grant (I3P-BPD2001-1) to E. Rodríguez and Spanish CICYT projects: ANT97-1533-E, ANT98-1739-E, ANT99-1608-E, and REN2001-4269-E/ANT Peer Reviewed