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Dendrodorididae
Dendrodorididae is a taxonomic family of sea slugs, dorid nudibranchs, marine gastropod molluscs in the Superfamily Phyllidioidea. Genera A maximum-parsimony analysis of the nucleotide sequence of the 16S mtDNA gene In biology, the word gene (from , ; "... Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a b ..., performed in 2003, has shown that the family Dendrodoridae is paraphyletic. Genera in the family Dendrodorididae presently include: * '' Dendrodoris'' Ehrenberg, 1831 * '' Doriopsilla'' Bergh, 1880 References * * Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 {{heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrodoris
''Dendrodoris'' is a genus of nudibranchs, marine gastropod molluscs in the family Dendrodorididae.Bouchet, P.; Gofas, S. (2012). Dendrodoris Ehrenberg, 1831. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137883 on 2012-06-09 Species Species so far described in this genus include: * '' Dendrodoris albobrunnea'' Allan, 1933 * '' Dendrodoris albopurpura'' Burn, 1957 * '' Dendrodoris angolensis'' Valdés & Ortea, 1996 * '' Dendrodoris arborescens'' (Collingwood, 1881) * '' Dendrodoris areolata'' (Alder & Hancock, 1864) * '' Dendrodoris atromaculata'' (Alder & Hancock, 1864) * '' Dendrodoris aurea'' (Quoy & Gaimard, 1832) * '' Dendrodoris azineae'' Behrens & Valdes, 2004 * '' Dendrodris behrensi'' Millen & Bertsch, 2005Millen S. V. & Bertsch H. (2005). "Two New Species of Porostome Nudibranchs (Family Dendrodorididae) from the Coast of California (USA) and Baja Californica (Mexico)". ''Proceedings of the California Academ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doriopsilla Albopunctata
''Doriopsilla albopunctata'', the white-spotted sea goddess, is a species of dorid nudibranch, a colorful sea slug, in the family Dendrodorididae. It is native to the Pacific Coast of North America, from Mendocino County, California south, possibly to Baja California Peninsula, Mexico. There are five other species that are quite similar to ''Doriopsilla albopunctata'' and can be confused with it: '' Doriopsilla bertschi'' (Hoover, Lindsay, Goddard & Valdés, 2015), '' Doriopsilla davebehrensi'' (Hoover, Lindsay, Goddard & Valdés, 2015), '' Doriopsilla fulva'' (MacFarland, 1905), '' Doriopsilla gemela'' (Gosliner, Schaefer & Millen, 1999), and ''Baptodoris mimetica'' ( Gosliner, 1991).Hoover C., Lindsay T., Goddard J.H.R. & Valdés A. (2015)''Seeing double: pseudocryptic diversity in the ''Doriopsilla albopunctata–Doriopsilla gemela'' species complex of the north-eastern Pacific.Zoologica Scripta. 44: 612-631. Distribution This species is found from Mendocino to San Diego, Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doriopsilla
''Doriopsilla'' is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Dendrodorididae.Valdés Á. & Gosliner T.M. (1999). ''Phylogeny of the radula-less dorids (Mollusca, Nudibranchia), with the description of a new genus and a new family''. Zoologica Scripta 28: 315-360 Description ''Doriopsilla'' and ''Dendrodoris'' are genera which have frequently been confused, partly because both lack a radula. They feed by dissolving their sponge food externally, using enzymes, and then ingesting sponge cells without the sponge skeleton. They share this loss of the radula and method of feeding with the Phyllidiidae but look more like other Dorid nudibranchs in having a rosette of gills surrounding a dorsal anus, whilst Phyllidiidae have the gills located beneath the edge of the mantle. Species Species so far described in this genus include:Bouchet, P.; Gofas, S. (2015)''Doriopsilla'' Bergh, 1880.In: MolluscaBase (2016). Accessed through: World Regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidioidea
Phyllidioidea is a taxonomic superfamily of colorful sea slugs, dorid nudibranchs, marine gastropod mollusks. Taxonomy *Family Phyllidiidae Rafinesque, 1814 *Family Dendrodorididae O'Donoghue, 1924 *Family Mandeliidae Mandela's nudibranch, ''Mandelia mirocornata'', is a species of sea slug, a dorid nudibranch. It is a marine gastropod mollusc, the only member of the genus ''Mandelia'' and the family Mandeliidae. The genus and family name honor Nelson Mandela, ... Valdés & Gosliner, 1999 References Nudipleura {{Heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Slug
Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary time have either completely lost their shells, or have seemingly lost their shells due to having a greatly reduced or internal shell. The name "sea slug" is most often applied to nudibranchs, as well as to a paraphyletic set of other marine gastropods without obvious shells. Sea slugs have an enormous variation in body shape, color, and size. Most are partially translucent. The often bright colors of reef-dwelling species implies that these animals are under constant threat of predators, but the color can serve as a warning to other animals of the sea slug's toxic stinging cells (nematocysts) or offensive taste. Like all gastropods, they have small, razor-sharp teeth, called radulas. Most sea slugs have a pair of rhinophores—sensory te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protein-coding genes and noncoding genes. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur William Baden Powell
Arthur William Baden Powell (4 April 1901 – 1 July 1987) was a New Zealand malacologist, naturalist and palaeontologist, a major influence in the study and classification of New Zealand molluscs through much of the 20th century. He was known to his friends and family by his third name, "Baden". Biography Early life The name Baden had been a given name in a Powell family since 1731, when Susannah Powell née Thistlethwayte (1696–1762) gave to her child (1731–1792) the maiden name of her mother, Susannah Baden (1663–1692). The name Baden, particularly when associated with the surname Powell, became famous in 1900–1901, the year Arthur William Baden Powell was born, because of the siege of Mafeking, the most famous British action in the Second Boer War, which turned the British commander of the besieged, Robert Baden-Powell, into a national hero. Throughout the British Empire, babies were named after him. No family connection has yet been established between Arthur W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudolph Bergh
Rudolph Bergh (15 October 1824 – 20 July 1909), full name Ludvig Sophus Rudolph Bergh, was a Danish physician and malacologist. He worked in Copenhagen. As a doctor his speciality was sexually transmitted diseases. In Copenhagen a hospital and a street are named after him. Bergh was also an active malacologist, i.e. a zoologist who studies molluscs, in particular the nudibranchs, shell-less marine gastropods. He had well over 90 publications in this field and took part in a scientific expedition to Indonesia. He named and described numerous species of nudibranchs. Biography Rudolph Bergh was born in Copenhagen. His father was chief physician in the army Ludvig Anton Berg (1793–1853). His mother was Anne Sophie Kirstine (maiden name Pedersen). Bergh graduated from the Det von Westenske Institut in 1842, and received his medical degree in 1849. Dr. Rudolph Bergh became an attending physician at what was then Almindeligt Hospital, the general hospital in Amaliegade, Copen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transformed into a system of modern biological classification intended to reflect the evolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Gottfried Ehrenberg
Christian Gottfried Ehrenberg (19 April 1795 – 27 June 1876) was a German naturalist, zoologist, comparative anatomist, geologist, and microscopist. Ehrenberg was an evangelist and was considered to be of the most famous and productive scientists of his time. Early collections The son of a judge, Christian Gottfried Ehrenberg was born in Delitzsch, near Leipzig. He first studied theology at the University of Leipzig, then medicine and natural sciences in Berlin and became a friend of the famous explorer Alexander von Humboldt. In 1818, he completed his doctoral dissertation on fungi, ''Sylvae mycologicae Berolinenses.'' In 1820–1825, on a scientific expedition to the Middle East with his friend Wilhelm Hemprich, he collected thousands of specimens of plants and animals. He investigated parts of Egypt, the Libyan Desert, the Nile valley and the northern coasts of the Red Sea, where he made a special study of the corals. Subsequently, parts of Syria, Arabia and Abyss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') 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". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraphyletic
In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic group (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of Synapomorphy and apomorphy, synapomorphies and symplesiomorphy, symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term was coined by Willi Hennig to apply to well-known taxa like Reptilia (reptiles) which, as commonly named and traditionally defined, is paraphyletic with respect to mammals and birds. Reptilia contains the last common ancestor of reptiles a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
