Biemna liposigma   Burton,  1928 (Sponge)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Porifera
Class: Demospongiae
Order:Poecilosclerida
Family:Desmacellidae

Description
Color: Pale yellow (in spirit).

The speculation of this species is so characteristic and unusual that the formation of a new species for so small and fragmentary a specimen may, be justified. The holotype is a small fragment, roundly conical in shape, about 10 mm high and about 8 mm in diameter at the base. Several conspicuous oscules are distributed over the general surface of the sponge whose diameter range from 1-2 mm. The surface has a minutely reticulate appearance but is glabrous to the touch. The texture is firm but compressible.
The skeleton, which is really the only thing about this sponge which can be satisfactorily described, is composed entirely of styli and rhaphides, usually present in bundles of from twenty to forty form the most conspicuous feature of the skeleton. The rhaphides may occur either singly or in bundles and they are distributed, together with the styli, without apparent order throughout the whole of the choanosome. In the dermal membrane, however, some sort of order can be seen and it is probably the regular arrangement of the styli and the bundles of rhaphides lying parallel to and just beneath which give the surface its reticulate appearance. It seems almost possible to regard such an arrangement as a special dermal skeleton and, indeed, the whole skeleton, including the disposition of the dermal spicules, strongly recalls that of Halichondria panicea.
Spicules: (1) Styli, smooth, slightly curved especially in the basal third. 0.6 mm long by 0.024 mm thick.
(2) Rhaphides, 0.5 mm long by 0.004 mm thick. These spicules, in common with the other categories of rhaphides are smooth, slender and sharply pointed at each end.
(3) Rhaphides 0.084 mm long by 0.004 mm thick.
(4) Rhaphides 0.03 mm long by 0.0015 mm thick.
This appears to be a true Biemna which is characterized by the complete absence of stigmata, a condition almost unique in the genus.


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Andaman and Nicobar Islands INDIA
• Andaman and Nicobar Islands, Andaman Islands INDIA (Depth: 495.60 m mts)

Literature Source(s)
  • Manakadan, R and Pittie, A (2002) Standardized english and scientific names of the Indian subcontinent-2002 Newsletter for Birdwatchers S. Sridhar 42 p 35
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Pattanayak, JG (2006) Marine sponges of Andaman and Nicobar Islands Records of the Zoological Survey of India- Occasional Paper No: 255 Zoological Survey of India 164
  • Burton, M. (1928) Report on some Deep-Sea Sponges from the Indian Museum collected by R.I.M.S. ‘Investigator’. Part II. Tetraxonida (concluded) and Euceratosa Records of the Indian Museum 30(1) 109-138, pls I- Available at - http://www.marinespecies.org/aphia.php?p=taxdetails&id=168265

Page last updated on:2010-06-24

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