Ascandra izuensis
| Ascandra izuensis | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Calcarea |
| Order: | Clathrinida |
| Family: | Leucaltidae |
| Genus: | Ascandra |
| Species: | A. izuensis
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| Binomial name | |
| Ascandra izuensis (Tanita, 1942)[1]
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| Synonyms | |
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List
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Ascandra izuensis is a species of sea sponge in the family Clathrinidae. The species is named after the Izu peninsula where the holotype was collected.
Description
[edit]Ascandra izuensis is a calcareous sponge. It is found in the Central Kuroshio Current, Japan.[1] 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.[3]
References
[edit]- ^ a b van Soest, R. (2014). Van Soest RW, Boury-Esnault N, Hooper JN, Rützler K, de Voogd NJ, de Glasby BA, Hajdu E, Pisera AB, Manconi R, Schoenberg C, Janussen D, Tabachnick KR, Klautau M, Picton B, Kelly M, Vacelet J (eds.). "Clathrina izuensis (Tanita, 1942)". World Porifera database. World Register of Marine Species. Retrieved 2014-05-22.
- ^ van Soest, R. (2014). Van Soest RW, Boury-Esnault N, Hooper JN, Rützler K, de Voogd NJ, de Glasby BA, Hajdu E, Pisera AB, Manconi R, Schoenberg C, Janussen D, Tabachnick KR, Klautau M, Picton B, Kelly M, Vacelet J (eds.). "Leucosolenia izuensis Tanita, 1942". World Porifera database. World Register of Marine Species. Retrieved 2014-05-22.
- ^ Tanita, Senji (1942). "Calcareous Sponges collected in the Kanto District, Japan". Science Reports of the Tôhoku Imperial University. 17 (1): 17–29.
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