Echinodictyum asperum - (0133) - Gambier

Echinodictyum asperum OTU QM0133

Axinellida Raspailiidae

External characters

Honeycomb-like, clathrous reticulation of flattened cylindrical branches, forming spherical, elongate-bulbous, arborescent or digitate masses.

Colour

Light brown to grey-brown or beige alive.

Skeletal Characters

Oscules Not differentiated from honeycombed construction.
Texture Firm, compressible, difficult to tear.
Surface_Ornamentation Optically uneven, smooth, microscopically hispid, prominently cavernous.
Ectosomal_Skeleton Interconnected small fibre bundles producing a finer, secondary reticulation on surface.
Choanosomal_Skeleton Irregularly reticulate, cavernous.
Megascleres Choan. oxeas (150-565 x 3-20 um); subect. styles (157-618 x 2-13 um); ect. spicules absent; echinating acanthostyles with tapering points, evenly spined, fine spines (93-141 x 4-12 um).
Microscleres nil.

Distribution

In French Polynesia: Society, Tuamotu and Gambiers islands.

Pacific Ocean: Australia, Micronesia, Palau, Papua New Guinea

Indian Ocean:  Western Australia

Ecology and habitat

In the lagoon, on pinnacles.

QM0133 Echinodictyum asperum Ridley & Dendy, 1886. In: Hall, K.A. & Hooper, J.N.A. (2014) SpongeMaps: an online community for taxonomy and identification of sponges. (Available at http://www.spongemaps.org).