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Louis-Félix Henneguy
Louis-Félix Henneguy (18 March 1850 – 16 January 1928) was a French zoologist and embryologist born in Paris. In 1875, he received his medical doctorate from the University of Montpellier with a dissertation on the physiological action of poisons, ''Étude physiologique sur l'action des poisons''. In 1883 he obtained his agrégation with ''Les lichens utiles'', a thesis on useful lichens. During his career he was a professor of comparative embryology at the Collège de France (1900–28), and a member of the Académie de Médecine, the Académie d'Agriculture and the Académie des sciences (1908–28). From 1894 he was director of the journal, ''Archives d'anatomie microscopique''. He is known for his extensive research of ''phylloxera'', publishing a number of papers on means of destroying its eggs during the winter (1885, 1887–88). Also he performed studies on the natural history of the apple blossom weevil, proposing methods for its eradication (1891). On behalf of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mihály Lenhossék
Mihály Lenhossék, named often given as Michael von Lenhossék (28 August 1863 – 26 January 1937) was a Hungarian anatomist and histologist born in Budapest. He was the son of anatomist József Lenhossék (1818–1888) and an uncle to Albert Szent-Györgyi (1893–1986). In 1886, he obtained his medical doctorate at Budapest, afterwards working in his father's anatomical institute. In 1889 he became prosector at the University of Basel, later performing similar duties at the University of Würzburg (1892–95). Afterwards he was an associate professor of anatomy at the University of Tübingen, and from 1900 was a professor of anatomy at the University of Budapest. Lenhossék is largely remembered for his research in the field of neuroanatomy, that included important histological studies of the nervous system. In 1893 he coined the term "astrocyte" to describe a star-shaped cell found in the central nervous system. Associated terms * "Henneguy–Lenhossek theory": Theory that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bony Fishes
Osteichthyes ( ; ), also known as osteichthyans or commonly referred to as the bony fish, is a diverse clade of vertebrate animals that have endoskeletons primarily composed of bone tissue. They can be contrasted with the Chondrichthyes (cartilaginous fish) and the extinct placoderms and acanthodians, which have endoskeletons primarily composed of cartilage. The vast majority of extant fish are members of Osteichthyes, being an extremely diverse and abundant group consisting of 45 orders, over 435 families and 28,000 species. The group is divided into two main clades, the ray-finned fish (Actinopterygii, which makes up the vast majority of extant fish) and the lobe-finned fish (Sarcopterygii, which gave rise to all land vertebrates, i.e. tetrapods). The oldest known fossils of bony fish are about 425 million years old from the late Silurian, which are also transitional fossils showing a tooth pattern that is in between the tooth rows of sharks and true bony fishes. Desp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Félix Alcan
Felix Mardochée Alcan (March 18, 1841 – February 18, 1925) was a French Jewish publisher and scholar, born in Metz. He was the grandson of Gerson Lévy, author of ''Orgue et Pioutim'', and son of Moyse Alcan, a well-known publisher at Metz. Having finished his studies at the lyceum of his native city, he entered the École Normale Supérieure of Paris in 1862. When he left it in 1865 he became a lecturer in mathematics until 1869, when he undertook the management of his father's publishing business at Metz. In 1872 he went to Paris, where in the following year he entered the old publishing-house of Germer-Baillière, of which he became the head in 1883. In 1880 he originated a series of school books for use in secondary schools (''lycées''); this series embraced works on science, history, and philosophy. The publications of his firm include the most considerable works on philosophic subjects published in France. In 1895 he was created knight of the Legion of Honor The N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Société Entomologique De France
Groupe Lactalis S.A. (doing business as Lactalis) is a French multinational dairy products corporation, owned by the Besnier family and based in Laval, Mayenne, France. The company's former name was Besnier S.A. Lactalis is the largest dairy products group in the world, and is the second largest food products group in France, behind Danone. It owns brands such as Parmalat, Président, Kraft Natural Cheese, Siggi's Dairy, Skånemejerier, Rachel's Organic, and Stonyfield Farm. History André Besnier started a small cheesemaking company in 1933 and launched its '' Président'' brand of Camembert in 1968. In 1990, it acquired Group Bridel (2,300 employees, 10 factories, fourth-largest French dairy group) with a presence in 60 countries. In 1992, it acquired United States cheese company Sorrento. In 1999, ''la société Besnier'' became ''le groupe Lactalis'' owned by Belgian holding company BSA International SA. In 2006, they bought Italian group Galbani, and in 2008, boug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Fage
Louis Fage (30 September 1883, in Limoges – 1964, in Dijon), also known as Jean-Louis Fage and Baptiste Louis Fage, was a French marine biologist and arachnologist. A native of Limoges, he studied biology at the University of Paris, Sorbonne and in the laboratory at Saint-Vaast-la-Hougue. In 1906 he obtained his doctorate with a thesis on the nephridia of polychaetes. For the next fourteen years he served as a naturalist at the ''Observatoire océanologique de Banyuls-sur-Mer, Laboratoire de biologie marine'' in Banyuls-sur-Mer. From 1920 he worked in the zoology department at the ''Muséum national d'histoire naturelle'' in Paris, where in 1938 he succeeded Charles Joseph Gravier (1865–1937) as professor and director of the department of zoology (worms and crustaceans). Fage made contributions in the fields of carcinology (study of crustaceans), arachnology and speleology. In 1945 he was a founding member of the ''Commission de spéléologie'' (being part of the ''Centre na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Édouard Chevreux
Édouard Chevreux (10 November 1846, in Paris – 10 January 1931, in Bône) was a French carcinologist. Chevreux specialised in the study of Amphipoda, an order of malacostracan crustaceans. With Louis Fage (1883–1964), he was co-author of the section on "Amphipodes" in the ''Faune de France''. The genera '' Chevreuxius'' and '' Chevreuxiella'' are named after him, as are numerous crustacean species. Selected writings * ''Sur le Gammarus berilloni catta'' * ''Voyage de la goëlette "Melita" aux Canaries et au Sénégal, 1889–1890'', (1891) – Voyage of the schooner "Melita" to the Canary Islands and Senegal, 1889–1890. * ''Amphipodes provenant des campagnes de l'Hirondelle (1885–1888)'', (1900) – Amphipods from the campaigns of the "Hirondelle" (1885–1888). * ''Paracyphocaris praedator; type d'un nouveau genre de Lysianassidae'', (1905) – "''Paracyphocaris praedator''"; the type of a new genus of Lysianassidae. * ''Amphipodes'', (1906) – Amphipods * ''Cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henneguya Zschokkei
''Henneguya zschokkei'' or ''Henneguya salminicola'' is a species of a myxosporean endoparasite. It afflicts several salmon and trout in the genera ''Oncorhynchus'' and ''Salmo'','' ''where it causes milky flesh or tapioca disease''. H. zschokkei'' does not require oxygen to survive and is notable for being one of the few multicellular organisms in the animal kingdom to rely on an exclusively anaerobic metabolism. It is also notable for its lack of both mitochondria and mitochondrial DNA.'''' Description ''Henneguya zschokkei'' is found in fish as an ovoid spore with two anterior polar capsules and two long caudal appendages. Individuals are very small (about 10 micrometers in diameter), but are found aggregated into cysts 3–6 mm in diameter at any place in the animal's musculature. Metabolism ''H. zschokkei'' is incapable of aerobic respiration, making it one of a handful of truly anaerobic animals.; Lay summary: It also lacks a mitochondrial genome and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protozoan
Protozoa (: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic debris. Historically, protozoans were regarded as "one-celled animals". When first introduced by Georg Goldfuss, in 1818, the taxon Protozoa was erected as a class within the Animalia, with the word 'protozoa' meaning "first animals", because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae. This classification remained widespread in the 19th and early 20th century, and even became elevated to a variety of higher ranks, including phylum, subkingdom, kingdom, and then sometimes included within the paraphyletic Protoctista or Protista. By the 1970s, it became usual to require that all taxa be monophyletic (derived from a common ancestor that would also be regarded as protozo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhytidocystis
''Rhytidocystis'' is a genus of apicomplexans. It is the only genus within the monotypic family Rhytidocystidae. The species of this genus are parasitic protozoa found in marine annelid The annelids (), also known as the segmented worms, are animals that comprise the phylum Annelida (; ). The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to vario ...s. Taxonomy There are four species known in this genus: * '' Rhytidocystis cyamus'' Rueckert & Leander 2009 * '' Rhytidocystis opheliae'' Henneguy 1907 * '' Rhytidocystis polygordiae'' * '' Rhytidocystis sthenelais'' Porchet-Henneré 1972 References Conoidasida Apicomplexa genera {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apicomplexan
The Apicomplexa (also called Apicomplexia; single: apicomplexan) are organisms of a large phylum of mainly parasitic alveolates. Most possess a unique form of organelle structure that comprises a type of non-photosynthetic plastid called an apicoplastwith an apical complex membrane. The organelle's apical shape is an adaptation that the apicomplexan applies in penetrating a host cell. The Apicomplexa are unicellular and spore-forming. Most are obligate endoparasites of animals, except ''Nephromyces'', a symbiont in marine animals, originally classified as a chytrid fungus, and the Chromerida, some of which are photosynthetic partners of corals. Motile structures such as flagella or pseudopods are present only in certain gamete stages. The Apicomplexa are a diverse group that includes organisms such as the coccidia, gregarines, piroplasms, haemogregarines, and plasmodia. Diseases caused by Apicomplexa include: * Babesiosis (''Babesia'') * Malaria (''Plasmodium'') * Cryptospori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
