Biology:Clathrina izuensis

Clathrina izuensis
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Calcarea
Subclass:	Calcinea
Order:	Clathrinida
Family:	Clathrinidae
Genus:	Clathrina
Species:	C. izuensis
Binomial name
Clathrina izuensis (Tanita, 1942)
Synonyms
Leucosolenia izuensis Tanita, 1942

Clathrina izuensis is a sponge species in the genus Clathrina. The species is named after the Izu peninsula where the holotype was collected.

Description

Clathrina izuensis is a calcareous sponge. It is found in the Central Kuroshio Current, Japan . The sponge consists of loosely branched and anastomosing ascon-tubes directly attached to a substratum. There is no pseudoderm covering the whole colony and no endogastric network. The sponge is rather small and attains a length of about 6 mm. The diameter of the ascon-tubes varies from 0.3 mm to 1 mm and the dermal surface of the tubes have a hispid appearance on account of projecting oxea. The colour of the sponge is yellowish-white when preserved in alcohol. The skeleton of the sponge is composed of triradiates, large and small quadriradiates, and oxea. The tri- and quadriradiates are arranged in a few layers in the sponge wall. The quadriradiates are more numerous than the triradiates and their apical rays project into the gastral cavity. The larger quadriradiates are usually arranged in the dermal skeleton. The oxea occur vertically or obliquely to the surface of the ascon-tubes.

References

Wikidata ☰ Q1818138 entry