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A new carnivorous shallow-water sponge from McMurdo Sound, Antarctica (Porifera, Poecilosclerida)
Van Soest, R.W.M.; Baker, B.J. (2011). A new carnivorous shallow-water sponge from McMurdo Sound, Antarctica (Porifera, Poecilosclerida). Mar. Biodiv. 41(4): 495-501. https://dx.doi.org/10.1007/s12526-010-0076-6
In: Marine Biodiversity. Springer: Heidelberg; Berlin. ISSN 1867-1616; e-ISSN 1867-1624
Peer reviewed article  
Available in  Authors 
Keywords
    Animal products > Sponges
    Aquatic organisms > Heterotrophic organisms > Carnivores
    Taxa > Species > New taxa > New species
    Asbestopluma Topsent, 1901 [WoRMS]
    Antarctica [Marine Regions]
    Marine/Coastal
Authors  Top 
  • Van Soest, R.W.M., more
  • Baker, B.J.
Abstract
    A new shallow-water representative of the carnviorous sponge genus Asbestopluma is described from the southernmost Antarctic region of McMurdo Sound. Asbestopluma (Asbestopluma) vaceleti n.sp. is a white, thin, sparingly branched sponge fringed by filaments along its entire length, with a slight thickening at the top of the branches. It was collected at 30 m depth by SCUBA divers from under densely populated overhangs of rocky substrata. The new species stands out among Antarctic Asbestopluma by the possession of forceps microscleres, a feature shared with several species from Arctic–Boreal waters (bathyal to deep-sea) and one from the Kermadec Trench (deep sea), but not previously reported from Antarctic species. A unique trait of the new species distinguishing it from all forceps-bearing Asbestopluma is a second category of reduced anisochelae. The new species is most similar to A. hypogea, a shallow-water cave species from the Mediterranean, which differs in having a smooth stalk and a filament-bearing ovoid body. A comparison is made with descriptions of Antarctic Asbestopluma species and all species possessing forceps microscleres.
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