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Demosponges
Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include 76.2% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). They are sponges with a soft body that covers a hard, often massive skeleton made of calcium carbonate, either aragonite or calcite. They are predominantly leuconoid in structure. Their "skeletons" are made of 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 siliceous diatoms. The many diverse orders in this class include all of the large sponges. Most are marine dwellers, but one order (Spongillida) live in freshwater environments. Some species are brightly colored, with great variety in body shape; the largest species are over ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porifera
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponges
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spicule (sponge)
Spicules are structural elements found in most sponges. The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support and potentially defense against predators. Sponge spicules are made of calcium carbonate or silica. Large spicules visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed microscleres. The composition, size, and shape of spicules are major characters in sponge systematics and taxonomy. Overview Sponges are a species-rich clade of the earliest-diverging (most basal) animals. They are distributed globally, with diverse ecologies and functions, and a record spanning at least the entire Phanerozoic. Most sponges produce skeletons formed by spicules, structural elements that develop in a wide variety of sizes and three dimensional shapes. Among the four sub-clades of Porifera, three ( Demospongiae, Hexactinellida, and Homoscleromorpha) produce skeletons of amorphous sil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geodia Barretti
''Geodia barretti'' is a massive deep-sea sponge species found in the boreal waters of the North Atlantic Ocean, and is fairly common on the coasts of Norway and Sweden. It is a dominant species in boreal sponge grounds. Supported by morphology and molecular data, this species is classified in the family Geodiidae. Morphology External morphology Massive sponge, often irregularly lobate, whitish to light yellow color. The inside is light brown. Surface is smooth. Oscules are grouped in more or less shallow depressions (= preoscules) while pores are spread over the whole body. There is a distinct cortex about 0.5 mm thick, it is made of ball-shaped spicules called sterrasters. Spicules Megascleres. * Oxeas (1000-5000 µm). * Dichotriaenes with rhabdomes up to 5000 µm long (more rarely orthotriaenes). * Anatriaenes. * Meso/protriaenes (rare). Microscleres. * Microxeas (190-900 µm), sometimes slightly centrotylote. * Sterrasters (50-130 µ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spongilla Lacustris
''Spongilla lacustris'' is a species of freshwater sponge from the family Spongillidae. It inhabits freshwater rivers and lakes, often growing under logs or rocks. ''Lacustris'' is a Latin word meaning "related to or associated with lakes". The species ranges from North America to Europe and Asia. It is the most common freshwater sponge in central Europe. It is the most widespread sponge in Northern Britain, and is one of the most common species of sponges in lakes and canals. ''Spongilla lacustris'' have the ability to reproduce both sexually and asexually. They become dormant during winter. The growth form ranges from encrusting, to digitate, to branched, depending upon the quality of the habitat. Classification ''Spongilla lacustris'' is part of the class demosponges of the phylum Porifera. The Porifera phylum contains all sponges which are characterized by the small pores on the outer layer, which take in water. The cells in the sponge walls filter food from the water. Whate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protomonaxonida
Protomonaxonida is an extinct order of sea sponges. It is a paraphyletic group gathering the most ancient species from the Burgess Shale to modern sponges. Families and genera * Family †Choiidae Laubenfels, 1925 ** Genus †'' Allantospongia'' Rigby & Hou, 1995 ** Genus †'' Choia'' Walcott, 1920 ** Genus †'' Choiaella'' Rigby & Hou, 1995 ** Genus †'' Lenica'' Goryanskiy, 1977 * Family †Halichondritidae Rigby, 1986 ** Genus †'' Halichondrites'' Walcott, 1920 ** Genus †'' Pohlispongia'' Rigby & von Bitter, 2005 * Family †Hamptoniidae De Laubenfels, 1955 ** Genus †'' Hamptonia'' Walcott, 1920 ** Genus †'' Hamptoniella'' Rigby & Collins, 2004 * Family †Hazeliidae De Laubenfels, 1955 ** Genus †'' Crumillospongia'' Rigby, 1986 ** Genus †'' Falospongia'' Rigby, 1986 ** Genus †'' Hazelia'' Walcott, 1920 * Family †Leptomitidae De Laubenfels, 1955 ** Genus †'' Leptomitus'' Walcott, 1886 ** Genus †'' Paraleptomitella'' Chen et al., 1989 ** Genus †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteroscleromorpha
Heteroscleromorpha is a subclass of demosponges within the phylum Porifera Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through t ....van Soest, R. (2016)Heteroscleromorpha.Accessed through: World Register of Marine Species on 2017-02-17. References Sponge subclasses Taxa named by Nicole Boury-Esnault {{Demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callyspongia
''Callyspongia'' is a genus of demosponges Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include 76.2% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). They are sponges with a soft body that covers a hard, ... in the family Callyspongiidae. Species The following species are recognised in the genus ''Callyspongia'': Subgenus ''Callyspongia (Callyspongia)'' Duchassaing & Michelotti, 1864 Subgenus ''Callyspongia (Cavochalina)'' Carter, 1885 Subgenus ''Callyspongia (Cladochalina)'' Schmidt, 1870 Subgenus ''Callyspongia (Euplacella)'' Lendenfeld, 1887 Subgenus ''Callyspongia (Toxochalina)'' Ridley, 1884 Subgenus unassigned References Callyspongiidae Sponge genera {{Demospongiae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexactinellida
Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges. They are usually classified along with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma. Some experts believe glass sponges are thlongest-lived animals on earth these scientists tentatively estimate a maximum age of up to 15,000 years. Biology Glass sponges are relatively uncommon and are mostly found at depths from below the sea level. Although the species '' Oopsacas minuta'' has been found in shallow water, others have been found much deeper. They are found in all oceans of the world, although they are particularly common in Antarctic and Northern Pacific waters. They are more-or-less cup-shaped animals, ranging from in height, with sturdy lattice-like internal skeletons made up of fused spicules of silica. The body is relatively symmetrical, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spongin
Spongin, a modified type of collagen protein, forms the fibrous skeleton of most organisms among the phylum Porifera, the sponges. It is secreted by sponge cells known as spongocytes. Spongin gives a sponge its flexibility. True spongin is found only in members of the class Demospongiae. Research directions Use in the removal of phenolic compounds from wastewater Researchers have found spongin to be useful in the photocatalytic degradation and removal of bisphenols (such as BPA) in wastewater. A heterogeneous catalyst consisting of a spongin scaffold for iron phthalocyanine (SFe) in conjunction with peroxide and UV radiation has been shown to remove phenolic wastes more quickly and efficiently than conventional methods. Other research using spongin scaffolds for the immobilization of '' Trametes versicolor'' Laccase Laccases () are multicopper oxidases found in plants, fungi, and bacteria. Laccases oxidize a variety of phenolic substrates, performing one-electron oxida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
