Global InformationOopsacas minuta information
| Oopsacas minuta | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Hexactinellida |
| Order: | Lyssacinosida |
| Family: | Leucopsacidae |
| Genus: | Oopsacas |
| Species: | O. minuta
|
| Binomial name | |
| Oopsacas minuta Topsent, 1927
| |
Oopsacas minuta is a glass sponge that is a member of the Hexactinellida. Oopsacas minuta is found in submarine caves in the Mediterranean. It is reproductive year-round. This species is a part of a class that are usually bathyal and abyssal.[1] Meaning they grow at a depth over 200 meters. At this depth the temperature is low and constant, so silica metabolism is optimized. However, this species has been observed in shallow water.[1] O. minuta have only been observed by exploring caves that trap cold water. The shape of the sponge is elongated, cylindrical and a little flared. It is between a few millimeters and 3.5 centimeters. O. minuta are white are held up with a siliceous skeleton. The spicules of the skeleton intersect in an intricate network.[2] These spindles partially block the top of the sponge. There are no obvious oscules. The sponge is anchored or suspended from the cave by silica fibers. This class of sponge is different from the three other classes of Porifera. It differs in tissue organization, ecology, development and physiology. O. minuta belongs to the order Lyssacinosida. Lyssacinosida are characterized by the parenchymal spicules mostly being unconnected; this is unlike other sponges in the subclass where the spicules form a connected skeleton.[3] The genome of O. minuta are one of the smallest of all the animal genomes that have been sequenced so far.[4] Its genome contains 24 noncoding genes and 14 protein-encoding genes.[5] The spindles of O. minuta have three axes and six points. This species does not have pinacocytes, which are the cells that form the outer layer in other sponges.[6] Instead of true choanocytes it has frill structures that bud from the syncytium.
- ^ a b Bakran-Petricioli, Tatjana; Vacelet, Jean; Zibrowius, Helmut; Petricioli, Donat; Chevaldonné, Pierre; Raa, Tonći (10 September 2007). "New data on the distribution of the 'deep-sea' sponges Asbestopluma hypogea and Oopsacas minuta in the Mediterranean Sea: New distribution data on Mediterranean 'deep-sea' sponges". Marine Ecology. 28: 10–23. doi:10.1111/j.1439-0485.2007.00179.x.
- ^ US Department of Commerce, National Oceanic and Atmospheric Administration. "What is a glass sponge?". oceanservice.noaa.gov. Retrieved 18 April 2023.
- ^ "Lyssacinosida". 18 April 2023.
- ^ Santini, Sébastien; Schenkelaars, Quentin; Jourda, Cyril; Duschene, Marc; Belahbib, Hassiba; Rocher, Caroline; Selva, Marjorie; Riesgo, Ana; Vervoort, Michel; Leys, Sally P.; Kodjabachian, Laurent; Bivic, André Le; Borchiellini, Carole; Claverie, Jean-Michel; Renard, Emmanuelle (27 July 2022). "The compact genome of the sponge Oopsacas minuta (Hexactinellida) is lacking key metazoan core genes": 2022.07.26.501511. doi:10.1101/2022.07.26.501511.
{{cite journal}}: Cite journal requires|journal=(help) - ^ Jourda, Cyril; Santini, Sébastien; Rocher, Caroline; Le Bivic, André; Claverie, Jean-Michel (30 July 2015). "Mitochondrial Genome Sequence of the Glass Sponge Oopsacas minuta". Genome Announcements. 3 (4): e00823–15. doi:10.1128/genomeA.00823-15. ISSN 2169-8287. PMC 4520895. PMID 26227597.
- ^ "28.1B: Morphology of Sponges". Biology LibreTexts. 16 July 2018. Retrieved 18 April 2023.