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Ascaltis gardineri

provided by wikipedia EN

Ascaltis gardineri is a species of calcareous sponge in the family Leucascidae from India and the Seychelles. The species is named after the British zoologist John Stanley Gardiner.

Description

Formed of regularly and tightly anastomosed, very thin, delicate tubes. In shape it is lobose, and full of folds. Each fold is flat, thin and delicate. Oscula have not been observed. In the centre of each fold there is a large tube (pseudoatrium), with choanocytes, surrounded by thinner tubes. Covering the external tubes, there are some large triactines. The wall of the tubes is very thin. The tubes are perpendicular to the surface, and converge at a large central tube. Above the central tube, it is possible to see some lacunes. The skeleton is formed of two types of triactines, of different sizes, and tetractines of the same size as the shorter triactines. The spicules are equiradiate and equiangular. Actines are conical with sharp tips. The large triactines are present only in the outside of the external tubes, where they lie side by side. The other triactines are spread along the tubes. Tetractines are less abundant than triactines. Their apical actine is almost the same thickness as the other actines. It is conical, sharp, shorter, straight and smooth and projected inside the tubes.[1]

References

  1. ^ Klautau, Michelle; Valentine, Clare. "Revision of the genus Clathrina (Porifera, Calcarea)". Zoological Journal of the Linnean Society. 139 (1): 1–62. doi:10.1046/j.0024-4082.2003.00063.x.

World Register of Marine Species entry

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Ascaltis gardineri: Brief Summary

provided by wikipedia EN

Ascaltis gardineri is a species of calcareous sponge in the family Leucascidae from India and the Seychelles. The species is named after the British zoologist John Stanley Gardiner.

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visit source
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wikipedia EN

Additional information

provided by World Register of Marine Species
Species "with a well defined cormus and a pseudoatrium, should be temporarily transferred to Ascaltis until the type species, Ascaltis lamarcki, is analyzed under an integrative molecular framework". Therefore, it is necessary to verify if this species is Ascaltis indeed.

Reference

Klautau, M.; Azevedo, F.; Cóndor-Luján, B.; Rapp, H.T.; Collins, A.; Russo, C.A.D.M. (). A Molecular Phylogeny for the Order Clathrinida Rekindles and Refines Haeckel's Taxonomic Proposal for Calcareous Sponges. Integrative and Comparative Biology. (), -.

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bibliographic citation
Klautau, M.; Azevedo, F.; Cóndor-Luján, B.; Rapp, H.T.; Collins, A.; Russo, C.A.D.M. (2013). A Molecular Phylogeny for the Order Clathrinida Rekindles and Refines Haeckel's Taxonomic Proposal for Calcareous Sponges. <em>Integrative and Comparative Biology.</em> 53(3), 447-461.
contributor
Klautau, Michelle [email]