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Keratosa
Keratosa, the keratose sponges or horny sponges, is a subclass of demosponge Demosponges or common sponges are sponges of the class Demospongiae (from + ), the most diverse group in the phylum Porifera which include greater than 90% of all extant sponges with nearly 8,800 species A species () is often de ...s. Keratosa sponges are nonspicular demosponges with organic spongin fibers forming flexible skeletons. Recently discovered in the Andaman and Nicobar Islands, these sponges contribute to reef structures in tropical regions. Preeti Antonetta Pereira, & Raghunathan, C. (2024)Three new records of Keratosa sponges (Demospongiae: Porifera) from the Andaman and Nicobar Islands, India ''Discover Oceans'', ''1''(1). References External links * Keratosaat the World Porifera Database Sponge subclasses {{Demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demosponge
Demosponges or common sponges are sponges of the class Demospongiae (from + ), the most diverse group in the phylum Porifera which include greater than 90% of all extant sponges with nearly 8,800 species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ... worldwide (according to the World Porifera Database). Being siliceous sponges, they are predominantly sponge#leuconoid, leuconoid in structure with an endoskeleton made of a meshwork of sponge spicule, spicules consisting of fibers of the protein spongin, the mineral silica, or both. Where spicules of silica are present, they have a different shape from those in the otherwise similar glass sponges. Some species, in particular from the Antarctic, obtain the silica for spicule-building from the ingestion of diatoms. The m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelonaplysilla Violacea
''Chelonaplysilla'' is a genus of sponges in the family Darwinellidae. Species *'' Chelonaplysilla americana'' van Soest, 2017 *'' Chelonaplysilla arenosa'' (Topsent, 1925) *'' Chelonaplysilla aurea'' Bergquist, 1995 *'' Chelonaplysilla betinensis'' Zea & van Soest, 1986 *'' Chelonaplysilla delicata'' Pulitzer-Finali & Pronzato, 1999 *'' Chelonaplysilla erecta'' (Row, 1911) *'' Chelonaplysilla incrustans'' (Carter, 1876) *'' Chelonaplysilla noevus'' (Carter, 1876) *'' Chelonaplysilla psammophila'' (Topsent, 1928) *'' Chelonaplysilla supjiensis'' Jeon & Sim, 2008 *'' Chelonaplysilla violacea'' (Lendenfeld, 1883) References External links * * {{Taxonbar, from=Q4116330 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Réunion
Réunion (; ; ; known as before 1848) is an island in the Indian Ocean that is an overseas departments and regions of France, overseas department and region of France. Part of the Mascarene Islands, it is located approximately east of the island of Madagascar and southwest of the island of Mauritius. , it had a population of 896,175. Its capital and largest city is Saint-Denis, La Réunion, Saint-Denis. Réunion was uninhabited until French immigrants and colonial subjects settled the island in the 17th century. Its tropical climate led to the development of a plantation economy focused primarily on sugar; slaves from East Africa were imported as fieldworkers, followed by Malays, Annamite, Vietnamese, Chinese, and Indians as indentured laborers. Today, the greatest proportion of the population is of mixed descent, while the predominant language is Réunion Creole, though French remains the sole official language. Since 1946, Réunion has been governed as a regions of France, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendroceratida
Dendroceratida is an order of sponges of the class Demospongiae. They are typically found in shallow coastal and tidal areas of most coasts around the world. They are generally characterized by concentric layers of fibers containing spongin (a collagen-like material), and by large flagellated chambers that open directly into the exhalant canals. Along with the Dictyoceratida, it is one of the two orders of demosponges that make up the keratose or "horny" sponges, in which a mineral skeleton A skeleton is the structural frame that supports the body of most animals. There are several types of skeletons, including the exoskeleton, which is a rigid outer shell that holds up an organism's shape; the endoskeleton, a rigid internal fra ... is minimal or absent and a skeleton of organic spongin-containing fibers is present instead. References Sponge orders {{Demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictyoceratida
Dictyoceratida is an order of sponges in the subclass Ceractinomorpha containing five families. Along with the Dendroceratida, it is one of the two orders of demosponges that make up the keratose or "horny" sponges, in which a mineral skeleton is minimal or absent and a skeleton of organic fibers containing spongin, a collagen Collagen () is the main structural protein in the extracellular matrix of the connective tissues of many animals. It is the most abundant protein in mammals, making up 25% to 35% of protein content. Amino acids are bound together to form a trip ...-like material, is present instead. References Sponge orders {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
