Overview

Comprehensive Description

Additional Material

South Africa - SAM-H4946 (Ts 226), Vulcan Rock (34°04’S, 18°18’E), depth 25 m, collected by P. Coetzee, 24 April 1996.
  • Samaai, T.; Gibbons, M.J. 2005. Demospongiae taxonomy and biodiversity of the Benguela region on the west coast of South Africa. African Natural History, 1: 1-96
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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Description

 Growth form encrusting, thin (3–6 mm), in irregular patches of up to 20 cm in diameter. Surface evidently conulose (1–3 mm) because of the dense dendritic “forest” of “small horny trees” forming the typical skeleton of all Aplysilla species. Oscules (1–3 mm) scattered and not evident; inhalant apertures rarely visible in vivo. Colour from rose to yellow. Skeleton of large ramified fibres arising from a spongin basal plate strictly adhering to the substratum. Dendritic fibres with maximum size of ca. 5 mm in length, ca. 300 µm in diameter at the basal portion, and no more than 50 µm in diameter at terminal branches (up to 4–6 sometimes anastomosing). Spongin layered, transparent, pale in colour, not cored with mineral debris. 
Creative Commons Attribution 3.0 (CC BY 3.0)

© Renata Manconi, Barbara Cadeddu, Fabio Ledda, Roberto Pronzato

Source: ZooKeys

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Ecology

Habitat

Depth range based on 35 specimens in 1 taxon.
Water temperature and chemistry ranges based on 5 samples.

Environmental ranges
  Depth range (m): 0 - 40
  Temperature range (°C): 11.768 - 12.348
  Nitrate (umol/L): 4.729 - 7.121
  Salinity (PPS): 35.184 - 35.363
  Oxygen (ml/l): 6.069 - 6.151
  Phosphate (umol/l): 0.351 - 0.439
  Silicate (umol/l): 2.489 - 3.285

Graphical representation

Depth range (m): 0 - 40

Temperature range (°C): 11.768 - 12.348

Nitrate (umol/L): 4.729 - 7.121

Salinity (PPS): 35.184 - 35.363

Oxygen (ml/l): 6.069 - 6.151

Phosphate (umol/l): 0.351 - 0.439

Silicate (umol/l): 2.489 - 3.285
 
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