Rossella nuda Topsent, 1901, Topsent, 1901

Janussen, Dorte & Reiswig, Henry M., 2009, Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica, Zootaxa 2136, pp. 1-20: 18

publication ID

http://doi.org/ 10.5281/zenodo.188483

DOI

http://doi.org/10.5281/zenodo.5611976

persistent identifier

http://treatment.plazi.org/id/434A87A6-FFA0-FFC0-FF53-FD0DFDA28E67

treatment provided by

Plazi

scientific name

Rossella nuda Topsent, 1901
status

 

Rossella nuda Topsent, 1901  

( Fig. 10 View FIGURE 10 B)

Material examined: All from ANDEEP III Exped., Weddell Sea, Antarctica   , SMF 10611 View Materials a, SMF 10531 View Materials , SMF 10612 View Materials , SMF 10602 View Materials (3 specimens), SMF 10603 View Materials , SMF 10706 View Materials , R.V. 'Polarstern', stn PS 67 /074-7, 20 Feb. 2005, 71° 18.48 '– 18.40 'S, 13 ° 58.55 '– 58.14 'W, 1055 – 1047 m, ethanol; SMF 10600 View Materials , PS 67 / 133 - 2, Weddell Sea, Antarctica   , 16 Mar. 2005, 62° 46.49 '– 46.38 'S, 53 °02.57'–03.50'W, 1584 – 1579 m, ethanol.

Description and remarks: Fourteen specimens assignable to Rossella nuda   were obtained on the ANDEEP III Expedition. These are mostly small sac-like forms, 26 to 93 mm in length, with smooth surfaces covered by long projecting prostalia. They agree in both morphology and spiculation with previous descriptions of R. nuda   ( Topsent, 1901; Burton, 1929, 1932; Barthel & Tendal, 1994). Since the anisodiscohexasters of this species have never been well illustrated, an SEM ( Fig. 10 View FIGURE 10 B) is provided to document their fine structure and to serve for comparison with those of other rossellids. This species is another very well known member of the Antarctic benthic fauna, with distribution including the Bellingshausen Sea, South Georgia Island, and from eastern Weddell Sea to the Ross Sea. It had previously been recorded from depths of 35–900 m ( Barthel & Tendal, 1994) but the ANDEEP III collections now extend the lower limit to 1579 m.

SMF

Forschungsinstitut und Natur-Museum Senckenberg