Checklist of Benthic Cnidaria in the SW Atlantic Ocean (54 ºS- 56 ºS)
Schejter, L.
Genzano, G.
Pérez, C. D.
Acuña, F.
Cordeiro, R. T. S.
Silva, R. A.
Garese, A.
Bremec, C. S.
Zootaxa
2020
2020-11-13
4878
2
201
239
5ZXFD
(Studer, 1879)
Studer
1879
[151,623,1734,1761]
Anthozoa
Primnoidae
Convexella
Animalia
Alcyonacea
22
223
Cnidaria
species
magelhaenica
Material examined:BBB 2016: St. 12; St. 13; St. 16; St. 21; St. 23; St. 25; St. 26; St. 28; St. 31; St. 32; St. 33; St. 34; St. 35; St. 36; St. 38; St. 39. PD BB2017: St. 9; St. 11; St. 14; St. 16; St. 21; St. 23; St. 26; St. 27; St. 28; St. 34; St. 35; St. 36; St. 43. GARCÍA 2015: St. 17bis ( Fig. 2C) (MACN-In: 43490, 43491, 43492, 43493, 43494, 43495, 43496, 43497, 43498, 43499, 43500, 43501, 43502, 43503).
Distribution:Canal Pasaje, Chile, 12 m( Häussermann et al.2016); Patagonian Shelf ( 38°20.31′S, 55°40.35′W, 93 m) ( Rojo de Almeida et al.2010); Straits of Magellan and Le Maire, Drake Passage, Tierra del Fuego, Malvinasand South Orkney Islands(52°52’– 59°49’S, 55°30’– 75°41’W), 73–1647 m( Bayer 1996b); Burdwood bank, 111 m( Broch 1965); off Staten Is., Burdwood bank ( 128–1000 m) (present study).
Remarks: Synonyms: Primnoella magelhaenica: Broch, 1965. This species has been widely reported and figured in Antarctic and sub-Antarctic waters ( Bayer 1996b; Häussermann et al.2016). It was frequent in several stations of the current study, and is reported as one of the most common species in the Southern Ocean ( Auscavitch & Waller 2017). Convexella magelhaenicais a prolific source of natural products, like the dolabellane diterpenoids, new marine product isolated from this octocoral by Rojo de Almeida et al. (2010)with cytotoxic activity against human pancreatic adenocarcinoma cell. Specimens were mostly salmon to red in color, but some also white. Some specimens also showed sparsely branching pattern, not often reported for this species.