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Borojevia Paracerebrum
''Borojevia paracerebrum'' is a species of calcareous sponge from Mexico. The species is named after its similarity to '' Borojevia cerebrum''. Description The single known specimen was found encrusting on a specimen of '' Euryspongia rosea''. It is ramose, with a smooth surface and is 3 to 4 cm in extent and up to 6 mm thick. The tightly woven anastomosing tubes are 100-180 μm in diameter. The approximately circular openings on the surface are 100-200 μm in diameter. Oscula have not been clearly identified. Large triactines and a few large tetractines occur in the choanosome A choanosome is an inner region of a sponge, supported on the choanoskeleton, the stucture that contains the choanocytes. See also * Choanoderm The choanoderm is a type of cell layer composed of flagellated collar cells, or choanocytes, found .... Approximately a third of the small tetractines have three rows of spines along the distal portion of the apical ray. The large, regular triactin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. 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. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcareous Sponge
The calcareous sponges of class Calcarea are members of the animal phylum Porifera, the cellular sponges. They are characterized by spicules made of calcium carbonate in the form of calcite or aragonite. While the spicules in most species have three points, in some species they have either two or four points. Biology All sponges in this class are strictly marine, and, while they are distributed worldwide, most are found in shallow tropical waters. Like nearly all other sponges, they are sedentary filter feeders. All three sponge body plans are represented within class Calcarea : asconoid, syconoid, and leuconoid. Typically, calcareous sponges are small, measuring less than in height, and drab in colour. However, a few brightly coloured species are also known. Calcareous sponges vary from radially symmetrical vase-shaped body types to colonies made up of a meshwork of thin tubes, or irregular massive forms. The skeleton has either a mesh or honeycomb structure. Classifica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borojevia Cerebrum
''Borojevia cerebrum'' is a species of calcareous sponge from the Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ea .... The species name refers to the brain-like appearance of the sponge. Description As the cormus of the holotype is fragmented, it was not possible to determine its organization, or establish the presence of water-collecting tubes. In some parts, the tubes have even collapsed, and it is impossible to distinguish them. The wall of the tubes is thin, comprising an irregular meshwork of triactines, tetractines and a few tripods, which are located only on external tubes. Projecting into the interior of the tubes are the apical actines of the tetractines. Spicules are equiangular and equiradiate triactines, tetractines, and tripods. Triactines are the most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euryspongia Rosea
''Euryspongia'' is a genus of sponges belonging to the family Dysideidae Dysideidae is a family of sea sponges in the order Dictyoceratida. Genera *''Citronia'' Cook & Bergquist, 2002de Cook, S. C. & Bergquist, P. R. (2002). Family Dysideidae Gray, 1867. In Hooper, J., van Soest, R. & Willenz, P. (Eds.), ''Systema Po .... The species of this genus are found in Indian and Pacific Ocean. Species: *'' Euryspongia arenaria'' *'' Euryspongia canalis'' *'' Euryspongia coerulea'' *'' Euryspongia coreana'' *'' Euryspongia delicatula'' *'' Euryspongia flabellum'' *'' Euryspongia heroni'' *'' Euryspongia lactea'' *'' Euryspongia lankesteri'' *'' Euryspongia linea'' *'' Euryspongia lobata'' *'' Euryspongia phlogera'' *'' Euryspongia radicula'' *'' Euryspongia raouchensis'' *'' Euryspongia regularis'' *'' Euryspongia rosea'' *'' Euryspongia semicanalis'' *'' Euryspongia spina'' References {{Taxonbar, from=Q4115781 Sponges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choanosome
A choanosome is an inner region of a sponge, supported on the choanoskeleton, the stucture that contains the choanocytes. See also * Choanoderm The choanoderm is a type of cell layer composed of flagellated collar cells, or choanocytes, found in sponges. The sponge body is mostly a connective tissue; the mesohyl, over which are applied epithelioid monolayers of cells, the outer pinacode ... Sponge anatomy References {{biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borojevia
''Borojevia'' is a genus of calcareous sponge in the family Clathrinidae Clathrinidae is a family of calcareous sponges in the order Clathrinida. It contains the following genera: ''Arturia'' '' Borojevia'' '' Brattegardia'' ''Clathrina'' ''Ernstia ''Ernstia'' is a genus of calcareous sponges in the family Clathr .... The genus is named after sponge researcher Radovan Borojevic. Description Calcinea in which the cormus comprises tightly anastomosed tubes. The skeleton contains regular (equiangular and equiradiate) triactines, tetractines and tripods. The apical actine of the tetractines has spines. Aquiferous system asconoid. Species * '' Borojevia aspina'' (Klautau, Solé-Cava & Borojevic, 1994) * '' Borojevia brasiliensis'' (Solé-Cava, Klautau, Boury-Esnault, Borojevic & Thorpe, 1991) * '' Borojevia cerebrum'' (Haeckel, 1872) * '' Borojevia croatica'' Klautau, Imesek, Azevedo, Plese, Nikolic & Cetkovic, 2016 * '' Borojevia crystallina'' Fontana, Cóndor-Luján, Azevedo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1996
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers ,Mexico ''''. . making it the world's 13th-largest country by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
