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Nematologist
Nematology is the scientific discipline concerned with the study of nematodes, or roundworms. Although nematological investigation dates back to the days of Aristotle or even earlier, nematology as an independent discipline has its recognizable beginnings in the mid to late 19th century.Chen, Z. X., Chen, S. Y., and Dickson, D. W. (2004). "A Century of Plant Nematology", pp. 1–42 in ''Nematology Advances and Perspectives'', Vol 1. Tsinghua University Press, Beijing, China.Chitwood, B. G., and Chitwood, M. B. (1950). "An Introduction to Nematology", pp. 1–5 in ''Introduction to Nematology''. University Park Press, Baltimore. History: pre-1850 Nematology research, like most fields of science, has its foundations in observations and the recording of these observations. The earliest written account of a nematode "sighting," as it were, may be found in the Pentateuch of the Old Testament in the Bible, in the Fourth Book of Moses called Numbers: "And the Lord sent fiery serpen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with Arthropod, arthropods, Tardigrade, tardigrades and other moulting animalia, animals in the clade Ecdysozoa, and unlike platyhelminthe, flatworms, have tubular digestion, digestive systems 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 described to date vary by author and may change rapidly over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michel Luc
Michel Luc (7 February 1927 – 18 January 2010) was a French zoologist (nematologist) and one of the founding fathers of the field of plant-nematology. He spent his career with ORSTOM (''Office de la Recherche Scientifique et Technique Outre-Mer''), now IRD (''Institut de recherche pour le développement''). He created the first French nematology laboratory in the ORSTOM research station of Adiopodoumé, near Abidjan (Ivory Coast) in 1955, and a second nematology lab at Dakar Bel-Air (Senegal) in 1969. In 1978, he launched the ''Revue de Nématologie'' (soon renamed ''Fundamental and Applied Nematology'') that fused with ''Nematologica'' in 1999 to become ''Nematology'', currently the leading nematology journal in the field. He was a world-renowned authority on nematode taxonomy. Biography Michel Luc was born on 7 February 1927 in Tunis (Tunisia). From 1945, on, he studied biology in Paris at the Sorbonne, where he attended classes delivered by biologists such as Georges Mangenot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nathan Cobb
Nathan Augustus Cobb (30 June 1859, in Spencer, Massachusetts – 4 June 1932, in Baltimore, Maryland) is known as "the father of nematology in the United States". He provided the foundations for nematode taxonomy and described over 1000 different nematode species. An individual with a variety of skills, he made significant contributions to a number of scientific disciplines and the USDA Nematology Laboratory, originally established with him as the director, continues today. He was the father of Frjeda Blanchard, the geneticist who first demonstrated Mendelian inheritance Mendelian inheritance (also known as Mendelism) is a type of biological inheritance following the principles originally proposed by Gregor Mendel in 1865 and 1866, re-discovered in 1900 by Hugo de Vries and Carl Correns, and later popularize ... in reptiles. Books by Cobb This list can be accessed via the Biodiversity Heritage Library. The list is incomplete. *"A Nematode formula." (1890) Sydney : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diana Wall
Diana Harrison Wall is the Founding Director of the School of Global Environmental Sustainability, a Distinguished Biology Professor, and Senior Research Scientist at the Natural Resource Ecology Laboratory at Colorado State University. She is an environmental scientist and a soil ecologist and her research has focussed on the Antarctic McMurdo Dry Valleys. Wall investigates ecosystem processes, soil biodiversity and ecosystem services and she is interested in how these are impacted by global change. The Wall Valley was named after her in recognition of her research in the McMurdo Dry Valleys. Wall is a globally recognised leader and speaker on life in Antarctica and climate change. Early life and education Wall was born in North Carolina where she attended high school. After graduating high school she moved to Lexington, Kentucky for undergraduate college. Her interest in nematodes began during her undergraduate degree when she worked on nematode parasites in horses and birds. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gregor W
Gregor is a masculine given name. Notable people and fictional characters with the name include: People * Gregor Abel (born 1949), Scottish footballer * Gregor Adlercreutz (1898–1944), Swedish equestrian * Gregor Aichinger (c. 1565–1628), German composer * Gregor Amann (born 1962), German politician * Gregor Arbet (born 1983), Estonian basketball player * Gregor Bailar (born 1963), American businessman * Gregor Bajde (born 1994), Slovenian footballer * Gregor Balažic (born 1988), Slovenian footballer * Gregor Baumgartner (born 1979), Austrian ice hockey player * Gregor Becke (born 1972), Austrian canoer * Gregor Belkovsky (1865–1948), Zionist activist * Gregor Benko (born 1944), American music historian * Gregor Bermbach (born 1981), German bobsledder * Gregor Betz (born 1948), German swimmer * Gregor Bialowas (born 1959), Austrian weightlifter * Gregor Blanco (born 1983), Venezuelan baseball player * Gregor Blatnik (born 1972), Slovenian footballer * Gregor Brandmüller (1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maynard Jack Ramsay
Dr. Maynard Jack "Doc" Ramsay (November 22, 1914 – March 20, 2005) was an American entomologist noted for his efforts to track and eradicate exotic parasites carried in flowers, fruits and other cargoes arriving from overseas. He was listed in American Men of Science and Who's Who in America. During his 36 years in government service, he often was called upon to provide his beetle expertise to the Smithsonian Institution and entomological organizations in the United States and elsewhere. He once provided entomological advice to writer John Steinbeck and found himself quoted on the subject of killer bees in the opening of Arthur Herzog's best-selling novel " The Swarm". Work Ramsay was widely known for his research on a potato cyst eelworm — the parasitic golden nematode (''Globodera rostochiensis''). The worm was discovered in 1941 in potato fields on Long Island, New York, the only state where it has established a foothold. Around 1946, the worm was found on a lily of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1,2-Dibromoethane
1,2-Dibromoethane, also known as ethylene dibromide (EDB), is an organobromine compound with the chemical formula . Although trace amounts occur naturally in the ocean, where it is formed probably by algae and kelp, it is mainly synthetic. It is a dense colorless liquid with a faint sweet odor, detectable at 10 ppm, is a widely used and sometimes-controversial fumigant. The combustion of 1,2-dibromoethane produces hydrogen bromide gas that is significantly corrosive. Preparation and use It is produced by the reaction of ethylene gas with bromine, in a classic halogen addition reaction: :CH=CH + Br → BrCH–CHBr Historically, 1,2-dibromoethane was used as a component in anti-knock additives in leaded fuels. It reacts with lead residues to generate volatile lead bromides, thereby preventing fouling of the engine with lead deposits. Pesticide It has been used as a pesticide in soil and on various crops. The applications were initiated after the forced retirement of 1,2-dibrom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long Island
Long Island is a densely populated island in the southeastern region of the U.S. state of New York (state), New York, part of the New York metropolitan area. With over 8 million people, Long Island is the most populous island in the United States and the List of islands by population, 18th-most populous in the world. The island begins at New York Harbor approximately east of Manhattan Island and extends eastward about into the Atlantic Ocean and 23 miles wide at its most distant points. The island comprises four List of counties in New York, counties: Kings and Queens counties (the New York City Borough (New York City), boroughs of Brooklyn and Queens, respectively) and Nassau County, New York, Nassau County share the western third of the island, while Suffolk County, New York, Suffolk County occupies the eastern two thirds of the island. More than half of New York City's residents (58.4%) lived on Long Island as of 2020, in Brooklyn and in Queens. Culturally, many people in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Globodera Rostochiensis
''Globodera rostochiensis'', commonly known as the golden nematode, golden eelworm or yellow potato cyst nematode, is a plant pathogenic nematode. It is a pest of plants in the family Solanaceae, primarily infesting potatoes and tomatoes, as well as a variety of other root crops. Pathology The golden nematode negatively affects plants of the family Solanaceae by forming cysts on the roots of susceptible species. The cysts, which are composed of dead nematodes, are formed to protect the female's eggs and are typically yellow-brown in color. The first symptoms of infestation are typically poor plant growth, chlorosis, and wilting. Heavy infestations can lead to reduced root systems, water stress, and nutrient deficiencies, while indirect effects of an infestation include premature senescence and increased susceptibility to fungal infections. Symptoms of golden nematode infestation are not unique, and thus identification of the pest is usually performed through testing of soil sam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Disulfide
Carbon disulfide (also spelled as carbon disulphide) is a neurotoxic, colorless, volatile liquid with the formula and structure . The compound is used frequently as a building block in organic chemistry as well as an industrial and chemical non-polar solvent. It has an "ether-like" odor, but commercial samples are typically contaminated with foul-smelling impurities.. It is of comparable toxicity to carbon monoxide. History In 1796, the German chemist Wilhelm August Lampadius (1772–1842) first prepared carbon disulfide by heating pyrite with moist charcoal. He called it "liquid sulfur" (''flüssig Schwefel''). The composition of carbon disulfide was finally determined in 1813 by the team of the Swedish chemist Jöns Jacob Berzelius (1779–1848) and the Swiss-British chemist Alexander Marcet (1770–1822). Their analysis was consistent with an empirical formula of CS2. Occurrence, manufacture, properties Small amounts of carbon disulfide are released by volcanic eruptio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fumigation
Fumigation is a method of pest control or the removal of harmful micro-organisms by completely filling an area with gaseous pesticides—or fumigants—to suffocate or poison the pests within. It is used to control pests in buildings (structural fumigation), soil, grain, and produce. Fumigation is also used during the processing of goods for import or export to prevent the transfer of exotic organisms. Structural fumigation targets pests inside buildings (usually residences), including pests that inhabit the physical structure itself, such as woodborers and drywood termites. Commodity fumigation, on the other hand, is also to be conducted inside a physical structure, such as a storage unit, but it aims to eliminate pests from infesting physical goods, usually food products, by killing pests within the container which will house them. Each fumigation lasts for a certain duration. This is because after spraying the pesticides, or fumigants, only the pests around are erad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
