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Caenorhabditis Nigoni
''Caenorhabditis nigoni'' is a male-female species in the Elegans group of the genus ''Caenorhabditis'', first identified and described as "''Caenorhabditis'' species 9" or "''C''. sp. 9" before being renamed as "''C. nigoni''". The specific epithet is a tribute to Victor Nigon who first studied ''Caenorhabditis elegans'' in the laboratory with Ellsworth Dougherty in the 1940s (Nigon, 1949). Isolates come from the Democratic Republic of the Congo and Kerala Kerala ( , ) is a States and union territories of India, state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile ..., India. ''C. briggsae'' hybrids research ''C. nigoni'' is noteworthy because it is very closely related to the hermaphroditic species, '' C. briggsae''. Despite substantial differences between ''C. nigoni'' and ''C. briggsae'' in their modes of sexual reproduction (50:50% fem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victor Nigon
Victor Marc Nigon (born 11 October 1920 in Metz, France, died 5 July 2015) was a biologist who was first to study the nematode worm ''Caenorhabditis elegans ''Caenorhabditis elegans'' () is a free-living transparent nematode about 1 mm in length that lives in temperate soil environments. It is the type species of its genus. The name is a Hybrid word, blend of the Greek ''caeno-'' (recent), ''r ...'' in the laboratory, with Ellsworth Dougherty, in the 1940s. Jean-Louis Brun, a student of Nigon, continued experiments on the 'Bergerac' variety of ''C. elegans''. The specific epithet given to the nematode species '' Caenorhabditis nigoni'' is a tribute to Victor Nigon. Victor Nigon has filed for some patents to protect their inventions, which have already been granted by the United States Patent and Trademark Office (USPTO). See also * History of research on Caenorhabditis elegans References 1920 births 2015 deaths 20th-century French biologists Caenorhabditi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caenorhabditis Elegans
''Caenorhabditis elegans'' () is a free-living transparent nematode about 1 mm in length that lives in temperate soil environments. It is the type species of its genus. The name is a Hybrid word, blend of the Greek ''caeno-'' (recent), ''rhabditis'' (rod-like) and Latin ''elegans'' (elegant). In 1900, Émile Maupas, Maupas initially named it ''Rhabditidae, Rhabditides elegans.'' Günther Osche, Osche placed it in the subgenus ''Caenorhabditis'' in 1952, and in 1955, Ellsworth Dougherty, Dougherty raised ''Caenorhabditis'' to the status of genus. ''C. elegans'' is an unsegmented pseudocoelomate and lacks respiratory or circulatory systems. Most of these nematodes are hermaphrodites and a few are males. Males have specialised tails for mating that include spicule (nematode), spicules. In 1963, Sydney Brenner proposed research into ''C. elegans,'' primarily in the area of neuronal development. In 1974, he began research into the molecular biology, molecular and developmental ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellsworth Dougherty
Ellsworth C. Dougherty (July 21, 1921 – 1965) was a biologist who was first to study the nematode worm ''Caenorhabditis elegans'' in the laboratory, with Victor Nigon, in the 1940s. He did most of his studies and medical work in California. Tributes Mount Dougherty is a mountain range in Antarctica named after Ellsworth Dougherty. The specific epithet given to the nematode species ''Caenorhabditis doughertyi'' is also a tribute to E. Dougherty. See also * History of research on Caenorhabditis elegans The nematode worm ''Caenorhabditis elegans'' was first studied in the laboratory by Victor Nigon and Ellsworth Dougherty in the 1940s, but came to prominence after being adopted by Sydney Brenner in 1963 as a model organism for the study of devel ... References 1921 births 1965 deaths Nematologists 20th-century American biologists Caenorhabditis elegans 20th-century American zoologists {{zoologist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Democratic Republic Of The Congo
The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo (the last ambiguously also referring to the neighbouring Republic of the Congo), is a country in Central Africa. By land area, it is the List of African countries by area, second-largest country in Africa and the List of countries and dependencies by area, 11th-largest in the world. With a population of around 112 million, the DR Congo is the most populous nominally List of countries and territories where French is an official language, Francophone country in the world. Belgian French, French is the official and most widely spoken language, though there are Languages of the Democratic Republic of the Congo, over 200 indigenous languages. The national capital and largest city is Kinshasa, which is also the economic center. The country is bordered by the Republic of the Congo, the Cabinda Province, Cabinda exclave of Angola, and the South Atlantic Ocean to the west; the Cen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerala
Kerala ( , ) is a States and union territories of India, state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile regions of Kingdom of Cochin, Cochin, Malabar District, Malabar, South Canara, and Travancore. Spread over , Kerala is the 14th List of states and union territories of India by area, smallest Indian state by area. It is bordered by Karnataka to the north and northeast, Tamil Nadu to the east and south, and the Laccadive Sea, Lakshadweep Sea to the west. With 33 million inhabitants as per the 2011 Census of India, 2011 census, Kerala is the List of states of India by population, 13th-largest Indian state by population. It is divided into 14 List of districts of Kerala, districts with the capital being Thiruvananthapuram. Malayalam is the most widely spoken language and is also the official language of the state. The Chera dynasty was the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caenorhabditis Briggsae
''Caenorhabditis briggsae'' is a small nematode, closely related to ''Caenorhabditis elegans''. The differences between the two species are subtle. The male tail in ''C. briggsae'' has a slightly different morphology from ''C. elegans''. Other differences include changes in vulval precursor competence and the placement of the excretory duct opening. ''C. briggsae'' is frequently used to study the differences between it and the more intimately understood ''C. elegans'', especially at the DNA and protein sequence level. Several mutant strains of ''C. briggsae'' have also been isolated that facilitate genetic analysis of this organism. ''C. briggsae'', like ''C. elegans'', is a hermaphrodite. The genome sequence for ''C. briggsae'' was determined in 2003. History ''C. briggsae'' was initially discovered by Margaret Briggs in 1944. The first individuals were isolated from a pile of leaves found on the Palo Alto campus of Stanford University. Briggs, who was studying for her MS, iden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elegans Supergroup
This list of Latin and Greek words commonly used in systematic names is intended to help those unfamiliar with classical languages to understand and remember the scientific names of organisms. The binomial nomenclature used for animals and plants is largely derived from Latin and Greek words, as are some of the names used for higher taxa, such as orders and above. At the time when biologist Carl Linnaeus (1707–1778) published the books that are now accepted as the starting point of binomial nomenclature, Latin was used in Western Europe as the common language of science, and scientific names were in Latin or Greek: Linnaeus continued this practice. While learning Latin is now less common, it is still used by classical scholars, and for certain purposes in botany, medicine and the Roman Catholic Church, and it can still be found in scientific names. It is helpful to be able to understand the source of scientific names. Although the Latin names do not always correspond to the cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematodes Described In 2014
The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases. They are classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the flatworms, nematodes have a tubular digestive system, with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species are uncertain. A 2013 survey of animal biodiversity suggested there are over 25,000. Estimates of the total number of extant species are subject to eve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of The Democratic Republic Of The Congo
The wildlife of the Democratic Republic of the Congo includes its flora and fauna, comprising a large biodiversity in rainforests, seasonally flooded forests and grasslands. The country is considered one of the 17 megadiverse nations, and is one of the most flora rich countries on the African continent. Its rainforests harbour many rare and endemic species, such as the chimpanzee and the bonobo. It is home for more than 10,000 types of plants, 600 timber species, as well as 1,000 bird species, 280 reptile species, and 400 mammal species, including the forest elephant, gorilla, forest buffalo, bongo, and okapi. Many of these wildlife species are threatened animals such as large lowland gorillas and chimpanzees. Five of the country's national parks are listed as World Heritage Sites: the Garumba, Kahuzi-Biega, Salonga and Virunga National Parks, and Okapi Wildlife Reserve. All five sites are listed by UNESCO as World Heritage In Danger. Several environmental issues in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Kerala
Fauna (: faunae or faunas) is all of the animal life present in a particular region or time. The corresponding terms for plants and fungi are ''flora'' and ''funga'', respectively. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zoologists and paleontologists use ''fauna'' to refer to a typical collection of animals found in a specific time or place, e.g. the "Sonoran Desert fauna" or the "Burgess Shale fauna". Paleontologists sometimes refer to a sequence of faunal stages, which is a series of rocks all containing similar fossils. The study of animals of a particular region is called faunistics. Etymology ''Fauna'' comes from the name Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns. All three words are cognates of the name of the Greek god Pan, and ''panis'' is the Modern Greek equivalent of fauna (πανίς or rather πανίδα). ''Fauna'' is also the word for a book ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
