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Johann Gustav Fischer
Johann Gustav Fischer (1 March 1819, Hamburg – 27 January 1889) was a German herpetologist. He served as an instructor at the Johanneum in Hamburg, and was associated with the city's ''Naturhistorisches Museum'', working extensively with its herpetological and ichthyological collections. He was the binomial author of numerous herpetological species, and has several species named in his honor: *"Fischer's cat snake" ('' Toxicodryas pulverulenta''), 1856. *" Fischer's chameleon" (''Kinyongia fischeri)'', described by Anton Reichenow in 1887. *"Fischer's dwarf gecko" ('' Lygodactylus fischeri)'', described by George Albert Boulenger in 1890. *"Fischer’s snail-eating snake" (''Tropidodipsas fischeri)'', described by George Albert Boulenger in 1894. *"Fischer's thick-toed gecko" ('' Pachydactylus laevigatus''), 1888. In the field of ichthyology, he described the genera ''Sclerocottus'' (Cottidae) and ''Gymnelichthys'' (Zoarcidae). Published works Many of his scientific papers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Baptist Fischer
Johann Baptist Fischer, born 1803 in Munich (Germany), died 30 May 1832 in Leiden (the Netherlands) was a German naturalist, zoologist and botanist, doctor and surgeon. Biography Fischer was the son of a Munich schoolmaster, also named Johann Baptist, and his wife Cäcilie Haimerl. His younger brother was Sebastian Fischer, who also became a physician and naturalist spending part of his career in Russia and then Egypt. J. B. Fisher was the assistant of the botanist Carl Ludwig Blume in the former national herbarium of Brussels. In 1826, he joined an expedition to Java, then a possession of the Dutch East Indies, and participated with Blume in writing the description of the species collected.Blume, C. L., Fischer, J. B. 1828. Flora Javae nec non insularum adjacentium. J. Frank, BrüsselBiodiversity Heritage Library/ref> During the Belgian revolution of September 1830, he helped Philipp Franz von Siebold transferring herbarium specimens from Brussels to Leiden in the Netherl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropidodipsas
''Tropidodipsas'' is a genus of New World snakes of the family Colubridae. Geographic range Species of the genus ''Tropidodipsas'' are found in Mexico and Central America. Species Ten species are recognized as being valid. * ''Tropidodipsas fasciata'' Günther, 1858 * ''Tropidodipsas fischeri'' Boulenger, 1894 * ''Tropidodipsas guerreroensis'' Taylor, 1939 Guerrero snail sucker * ''Tropidodipsas papavericola'' Grünwald, Toribio-Jiménez, Montaño-Ruvalcaba, Franz-Chávez, Peñaloza-Montaño, Barrera-Nava, Jones, Rodriguez, Hughes, Strickland, & Reyes-Velasco, 2021 * ''Tropidodipsas philippii'' (Jan, 1863) * ''Tropidodipsas repleta'' G.R. Smith, Lemos-Espinal, Hartman & Chiszar, 2005 * ''Tropidodipsas tricolor'' Grünwald, Toribio-Jiménez, Montaño-Ruvalcaba, Franz-Chávez, Peñaloza-Montaño, Barrera-Nava, Jones, Rodriguez, Hughes, Strickland, & Reyes-Velasco, 2021 * ''Tropidodipsas zweifeli'' Liner & Wilson, 1970 Etymology The specific name, ''fischeri'', is in honor of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists From Hamburg
A scientist is a person who conducts scientific research to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales (circa 624-545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. In modern times, many scientists have advanced degrees in an area of science and pursue careers in various sectors of the economy such as academia, industry, government, and nonprofit environments.'''' History The roles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1889 Deaths
Events January–March * January 1 ** The total solar eclipse of January 1, 1889 is seen over parts of California and Nevada. ** Paiute spiritual leader Wovoka experiences a vision, leading to the start of the Ghost Dance movement in the Dakotas. * January 4 – An Act to Regulate Appointments in the Marine Hospital Service of the United States is signed by President Grover Cleveland. It establishes a Commissioned Corps of officers, as a predecessor to the modern-day U.S. Public Health Service Commissioned Corps. * January 5 – Preston North End F.C. is declared the winner of the The Football League 1888–89, inaugural Football League in England. * January 8 – Herman Hollerith receives a patent for his electric tabulating machine in the United States. * January 15 – The Coca-Cola Company is originally Incorporation (business), incorporated as the Pemberton Medicine Company in Atlanta, Georgia (U.S. state), Georgia. * January 22 – Columbia Phonograph is formed in Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1819 Births
Events January–March * January 2 – The Panic of 1819, the first major peacetime financial crisis in the United States, begins. * January 25 – Thomas Jefferson founds the University of Virginia. * January 29 – Sir Stamford Raffles lands on the island of Singapore. * February 2 – ''Dartmouth College v. Woodward'': The Supreme Court of the United States under John Marshall rules in favor of Dartmouth College, allowing Dartmouth to keep its charter and remain a private institution. * February 6 – A formal treaty, between Hussein Shah of Johor and the British Sir Stamford Raffles, establishes a trading settlement in Singapore. * February 15 – The United States House of Representatives agrees to the Tallmadge Amendment, barring slaves from the new state of Missouri (the opening vote in a controversy that leads to the Missouri Compromise). * February 19 – Captain William Smith of British merchant brig ''Williams'' sights Williams ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Snake
Sea snakes, or coral reef snakes, are elapid snakes that inhabit marine environments for most or all of their lives. They belong to two subfamilies, Hydrophiinae and Laticaudinae. Hydrophiinae also includes Australasian terrestrial snakes, whereas Laticaudinae only includes the sea kraits (''Laticauda''), of which three species are found exclusively in freshwater. If these three freshwater species are excluded, there are 69 species of sea snakes divided between seven genera. Most sea snakes are venomous, except the genus ''Emydocephalus'', which feeds almost exclusively on fish eggs. Sea snakes are extensively adapted to a fully aquatic life and are unable to move on land, except for the sea kraits, which have limited land movement. They are found in warm coastal waters from the Indian Ocean to the Pacific and are closely related to venomous terrestrial snakes in Australia. All sea snakes have paddle-like tails and many have laterally compressed bodies that give them an ee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennibranchiate
Perennibranchiate, in zoology, is the condition of an organism retaining branchae, or gills, through life. This condition is generally said of certain amphibia, such as the mudpuppy. The term is opposed to caducibranchiate. In some cases only a small proportion of a given amphibian population is perennibranchiate, but in other instances a preponderance of the individuals have an adult gill retention. For example, in the case of the Rough-skinned Newt in the Cascade Mountains populations, approximately ninety percent of the adult population is perennibranchiate.C. Michael Hogan, 2008 See also * Neoteny Neoteny (), also called juvenilization,Montagu, A. (1989). Growing Young. Bergin & Garvey: CT. is the delaying or slowing of the physiological, or somatic, development of an organism, typically an animal. Neoteny is found in modern humans compared ... References * William Benjamin Carpenter (1854) ''Principles of Comparative Physiology'', Published by Blanchard and Lea, 752 pages * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cranial Nerve
Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), of which there are conventionally considered twelve pairs. Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck, including the special senses of vision, taste, smell, and hearing. The cranial nerves emerge from the central nervous system above the level of the first vertebra of the vertebral column. Each cranial nerve is paired and is present on both sides. There are conventionally twelve pairs of cranial nerves, which are described with Roman numerals I–XII. Some considered there to be thirteen pairs of cranial nerves, including cranial nerve zero. The numbering of the cranial nerves is based on the order in which they emerge from the brain and brainstem, from front to back. The terminal nerves (0), olfactory nerves (I) and optic nerves (II) emerge from the cerebrum, and the remaining ten pairs arise from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoarcidae
The eelpouts are the ray-finned fish family (biology), family Zoarcidae. As the common name suggests, they are somewhat eel-like in appearance. All of the roughly 300 species are ocean, marine and mostly bottom-dwelling, some at great depths. Eelpouts are predominantly found in the Northern Hemisphere. The arctic, north pacific and north Atlantic oceans have the highest concentration of species, however species are found around the globe. They are conventionally placed in the "perciform" assemblage; in fact, the Zoarcoidei seem to be specialized members of the Gasterosteiformes-Scorpaeniformes group of Acanthopterygii. The largest member of the family is ''Zoarces americanus'', which may reach 1.1 m in length. Other notable genera include ''Lycodapus'' and ''Gymnelus''. Taxonomy The eelpout family was first proposed as the family Zoarchidae in 1839 by the English naturalist William John Swainson but the spelling was changed to Zoarcidae after the spelling of the genus Zoarces w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottidae
The Cottidae are a family of fish in the superfamily Cottoidea, the sculpins. It is the largest sculpin family, with about 275 species in 70 genera.Kane, E. A. and T. E. Higham. (2012)Life in the flow lane: differences in pectoral fin morphology suggest transitions in station-holding demand across species of marine sculpin.''Zoology'' (Jena) 115(4), 223-32. They are referred to simply as cottids to avoid confusion with sculpins of other families. Cottids are distributed worldwide, especially in boreal and colder temperate climates. The center of diversity is the northern Pacific Ocean. Species occupy many types of aquatic habitats, including marine and fresh waters, and deep and shallow zones. A large number occur in near-shore marine habitat types, such as kelp forests and shallow reefs. They can be found in estuaries and in bodies of fresh water. Most cottids are small fish, under in length. The species ''Scorpaenichthys marmoratus'' can be up to in length.Froese, R. and D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pachydactylus
''Pachydactylus'' is a genus of insectivorous geckos, lizards in the family Gekkonidae. The genus is endemic to Africa, and member species are commonly known as thick-toed geckos. The genus also displays rich speciation, having 57 distinct species identified when compared to other closely related gecko genera like '' Rhoptropus,'' most of which have emerged since 35 Ma. It has been suggested that the reason for this rich speciation not from adaptive radiation nor nonadaptive radiation, but that the genus represents a clade somewhere between the two drivers of speciation. ''P. bibronii'' geckos have been used by NASA as animal models for experimentation. Description The genus ''Pachydactylus'' is characterized by dilated toe tips, usually with undivided scansors. Body scales are small, granular and non-overlapping, with scattered, large keeled tubercles. Coloration of Pachydactylus species varies, but is generally drab in color. Presence of adhesive toe pads varies by species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Albert Boulenger
George Albert Boulenger (19 October 1858 – 23 November 1937) was a Belgian-British zoologist who described and gave scientific names to over 2,000 new animal species, chiefly fish, reptiles, and amphibians. Boulenger was also an active botanist during the last 30 years of his life, especially in the study of roses. Life Boulenger was born in Brussels, Belgium, the only son of Gustave Boulenger, a Belgian public notary, and Juliette Piérart, from Valenciennes. He graduated in 1876 from the Free University of Brussels with a degree in natural sciences, and worked for a while at the Royal Belgian Institute of Natural Sciences, Brussels, as an assistant naturalist studying amphibians, reptiles, and fishes. He also made frequent visits during this time to the ''Muséum national d'Histoire naturelle'' in Paris and the British Museum in London. In 1880, he was invited to work at the Natural History Museum, then a department of the British Museum, by Dr. Albert C. L. G. Günther a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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