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Morchellium Appendiculatum
''Morchellium'' is a genus of colonial sea squirts, tunicates in the family Polyclinidae. Species The World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ... lists the following species: *'' Morchellium albidum'' Kott, 1992 *'' Morchellium appendiculatum'' (Michaelsen, 1923) *'' Morchellium argus'' (Milne-Edwards, 1841) *'' Morchellium giardi'' Herdman, 1886 *'' Morchellium leviventer'' (Monniot & Gaill, 1978) *'' Morchellium pannosum'' Kott, 1992 References Polyclinidae Tunicate genera {{Tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morchellium Argus
''Morchellium argus'', the red-flake ascidian, is a species of colonial sea squirt, a tunicate in the family Polyclinidae. It is native to shallow water in the northeastern Atlantic Ocean, especially round the coasts of Britain. Description A colony of ''Morchellium argus'' consists of a clump of vase-shaped zooids up to long, each supported by a conical stalk about wide, to which sand adheres. Each zooid has a buccal siphon with eight flaps and a tongue-like process underneath. This siphon opens into a large pharynx through which water is drawn into the interior, but the colony has a single exit siphon through which the water from several zooids is expelled. The zooids are translucent white, pale pink, or red, and there are four small red spots at the entrance to the pharynx, which distinguishes this tunicate from similar species. Distribution and habitat ''Morchellium argus'' is native to the northeastern Atlantic Ocean. It is common round the coasts of Britain, as far nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Giard
Alfred Mathieu Giard (8 August 1846 – 8 August 1908) was a French zoologist born in Valenciennes. He served as a professor of zoology at the Faculty of Sciences in Lille. He specialized in parasitology and the genus ''Giardia'' was named after him by Johann Künstler in 1882. Biography Giard was born in Valenciennes to grocer Alfred François Émile and Jeanne Henriette Mortamais. At an early age he became interested in plants and insects. In 1867, he began his studies of natural sciences at the École Normale Supérieure, followed by work as ''préparateur de zoologie'' at the laboratory of Henri de Lacaze-Duthiers (1821–1901) in Paris and later the teratologist Gabriel Dareste de la Chavanne. In 1872, he defended his doctoral thesis with a study on compound ascidians titled "''Recherches sur les ascidies composées ou synascidies''". From 1873 to 1882, he was ''professeur suppléant'' of natural history at the faculty of sciences in Lille, and in the meantime, was also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colony (biology)
In biology, a colony is composed of two or more Biological specificity#Conspecific, conspecific individuals living in close association with, or connected to, one another. This association is usually for mutual benefit such as stronger defense or the ability to attack bigger prey. Colonies can form in various shapes and ways depending on the organism involved. For instance, the bacterial colony is a cluster of identical cells (clones). These colonies often form and grow on the surface of (or within) a solid medium, usually derived from a single parent cell. Colonies, in the context of development, may be composed of two or more unitary (or solitary) organisms or be Modularity, modular organisms. Unitary organisms have determinate development (set life stages) from zygote to adult form and individuals or groups of individuals (colonies) are visually distinct. Modular organisms have indeterminate growth forms (life stages not set) through repeated iteration of genetically identi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunicate
Tunicates are marine invertebrates belonging to the subphylum Tunicata ( ). This grouping is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. Despite their simple appearance and very different adult form, their close relationship to the vertebrates is certain. Both groups are chordates, as evidenced by the fact that during their mobile larval stage, tunicates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, post-anal tail, and an endostyle. They resemble a tadpole. Tunicates are the only chordates that have lost their Myomere, myomeric segmentation, with the possible exception of the seriation of the gill slits. However, Doliolida, doliolids still display segmentation of the muscle bands. Some tunicates live as solitary individuals, but others replicate by budding and be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyclinidae
Polyclinidae is a family of tunicates in the order Aplousobranchia. Genera The World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ... lists the following genera: *'' Aplidiopsis'' Lahille, 1890 *'' Aplidium'' Savigny, 1816 *'' Morchellioides'' Herdman, 1886 *'' Morchellium'' Giard, 1872 *'' Neodictyon'' Sanamyan, 1988 *'' Polyclinella'' Harant, 1931 *'' Polyclinum'' Savigny, 1816 *'' Sidneioides'' Kesteven, 1909 *'' Synoicum'' Phipps, 1774 References Tunicate families Taxa named by Henri Milne-Edwards {{tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morchellium Albidum
''Morchellium'' is a genus of colonial sea squirts, tunicates in the family Polyclinidae. Species The World Register of Marine Species lists the following species: *'' Morchellium albidum'' Kott, 1992 *''Morchellium appendiculatum'' (Michaelsen, 1923) *''Morchellium argus ''Morchellium argus'', the red-flake ascidian, is a species of colonial sea squirt, a tunicate in the family Polyclinidae. It is native to shallow water in the northeastern Atlantic Ocean, especially round the coasts of Britain. Description A ...'' (Milne-Edwards, 1841) *'' Morchellium giardi'' Herdman, 1886 *'' Morchellium leviventer'' (Monniot & Gaill, 1978) *'' Morchellium pannosum'' Kott, 1992 References Polyclinidae Tunicate genera {{Tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morchellium Appendiculatum
''Morchellium'' is a genus of colonial sea squirts, tunicates in the family Polyclinidae. Species The World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ... lists the following species: *'' Morchellium albidum'' Kott, 1992 *'' Morchellium appendiculatum'' (Michaelsen, 1923) *'' Morchellium argus'' (Milne-Edwards, 1841) *'' Morchellium giardi'' Herdman, 1886 *'' Morchellium leviventer'' (Monniot & Gaill, 1978) *'' Morchellium pannosum'' Kott, 1992 References Polyclinidae Tunicate genera {{Tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morchellium Giardi
''Morchellium'' is a genus of colonial sea squirts, tunicates in the family Polyclinidae. Species The World Register of Marine Species lists the following species: *''Morchellium albidum'' Kott, 1992 *''Morchellium appendiculatum'' (Michaelsen, 1923) *''Morchellium argus ''Morchellium argus'', the red-flake ascidian, is a species of colonial sea squirt, a tunicate in the family Polyclinidae. It is native to shallow water in the northeastern Atlantic Ocean, especially round the coasts of Britain. Description A ...'' (Milne-Edwards, 1841) *'' Morchellium giardi'' Herdman, 1886 *'' Morchellium leviventer'' (Monniot & Gaill, 1978) *'' Morchellium pannosum'' Kott, 1992 References Polyclinidae Tunicate genera {{Tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
