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Callichirus Major
''Callichirus major sensu lato'' is a monophyletic species complex of ghost shrimp in the infraorder Axiidea, found in flat sandy beaches across the Pan-American coastline. Originally described as a single species, genetic studies eventually classified it as at least four almost morphologically indistinguishable species, one of which was given the binomial denomination ''Callichirus macrotelsonis'' (Peiró, 2012). The complex is distinguished by sexual dimorphism, distinctly separated coxae and bases in the maxilla and gonochorism, despite vestigial signs of ancestral hermaphroditism in ''C. macrotelsonis''. The widespread extraction of individuals for living fishing bait has endangered both its conservation and that of their respective ecosystems. Taxonomy ''Callichirus major'' was first described as ''Callianassa major'' by Thomas Say in 1818, specifically in the Gulf of Mexico and East Florida. Its genus was renamed ''Callichirus'' in 1866 by William Stimpson. It used to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Say
Thomas Say (June 27, 1787 – October 10, 1834) was an American entomologist, conchologist, and herpetologist. His studies of insects and shells, numerous contributions to scientific journals, and scientific expeditions to Florida, Georgia, the Rocky Mountains, Mexico, and elsewhere made him an internationally known naturalist. Say has been called the father of American descriptive entomology and American conchology. He served as librarian for the Academy of Natural Sciences of Philadelphia, curator at the American Philosophical Society (elected in 1817), and professor of natural history at the University of Pennsylvania. Early life and education Born in Philadelphia into a prominent Quaker family, Thomas Say was the great-grandson of John Bartram, and the great-nephew of William Bartram. His father, Dr. Benjamin Say, was brother-in-law to another Bartram son, Moses Bartram. The Say family had a house, "The Cliffs" at Gray's Ferry, adjoining the Bartram family farms in King ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infraorder
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. For some groups of organisms, their orders may follow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colombia
Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuela to the east and northeast, Brazil to the southeast, Ecuador and Peru to the south and southwest, the Pacific Ocean to the west, and Panama to the northwest. Colombia is divided into 32 departments and the Capital District of Bogotá, the country's largest city. It covers an area of 1,141,748 square kilometers (440,831 sq mi), and has a population of 52 million. Colombia's cultural heritage—including language, religion, cuisine, and art—reflects its history as a Spanish colony, fusing cultural elements brought by immigration from Europe and the Middle East, with those brought by enslaved Africans, as well as with those of the various Amerindian civilizations that predate colonization. Spanis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caribbean Sea
The Caribbean Sea ( es, Mar Caribe; french: Mer des Caraïbes; ht, Lanmè Karayib; jam, Kiaribiyan Sii; nl, Caraïbische Zee; pap, Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles starting with Cuba, to the east by the Lesser Antilles, and to the south by the northern coast of South America. The Gulf of Mexico lies to the northwest. The entire area of the Caribbean Sea, the numerous islands of the West Indies, and adjacent coasts are collectively known as the Caribbean. The Caribbean Sea is one of the largest seas and has an area of about . The sea's deepest point is the Cayman Trough, between the Cayman Islands and Jamaica, at below sea level. The Caribbean coastline has many gulfs and bays: the Gulf of Gonâve, Gulf of Venezuela, Gulf of Darién, Golfo de los Mosquitos, Gulf of Paria and Gulf of Honduras. The Caribbean Sea has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Testing
Genetic testing, also known as DNA testing, is used to identify changes in DNA sequence or chromosome structure. Genetic testing can also include measuring the results of genetic changes, such as RNA analysis as an output of gene expression, or through biochemical analysis to measure specific protein output. In a medical setting, genetic testing can be used to diagnose or rule out suspected genetic disorders, predict risks for specific conditions, or gain information that can be used to customize medical treatments based on an individual's genetic makeup. Genetic testing can also be used to determine biological relatives, such as a child's biological parentage (genetic mother and father) through DNA paternity testing, or be used to broadly predict an individual's ancestry. Genetic testing of plants and animals can be used for similar reasons as in humans (e.g. to assess relatedness/ancestry or predict/diagnose genetic disorders), to gain information used for selective breedi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustacean Larva
Crustaceans may pass through a number of larval and immature stages between hatching from their eggs and reaching their adult form. Each of the stages is separated by a moult, in which the hard exoskeleton is shed to allow the animal to grow. The larvae of crustaceans often bear little resemblance to the adult, and there are still cases where it is not known what larvae will grow into what adults. This is especially true of crustaceans which live as benthic adults (on the sea bed), more-so than where the larvae are planktonic, and thereby easily caught. Many crustacean larvae were not immediately recognised as larvae when they were discovered, and were described as new genera and species. The names of these genera have become generalised to cover specific larval stages across wide groups of crustaceans, such as ''zoea'' and ''nauplius''. Other terms described forms which are only found in particular groups, such as the ''glaucothoe'' of hermit crabs, or the ''phyllosoma'' of slippe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Edward Ortmann
Arnold Edward Ortmann (April 8, 1863 – January 3, 1927) was a Prussian-born United States naturalist and zoologist who specialized in malacology. Biography Ortmann was born in Magdeburg, Prussia on April 8, 1863. A student of Ernst Haeckel, he graduated from the University of Jena in 1885 with a Ph.D.; he had also studied at the University of Kiel and the University of Strasbourg. From 1886 on, he worked as an instructor at the University of Strasbourg. Together with Haeckel, he participated in an expedition to Zanzibar in 1890/91. Three years later, he emigrated to the United States, where he got a post as the curator of the department of invertebrate paleontology at Princeton University. In 1899, he participated in the Peary Relief expedition, and one year later, he was naturalized as a U.S. citizen. In 1903, he moved to Pittsburgh. He became the curator of invertebrate zoology at the Carnegie Museum and from 1910 on, he was professor of physical geography at the Universit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 states and the Federal District. It is the largest country to have Portuguese as an official language and the only one in the Americas; one of the most multicultural and ethnically diverse nations, due to over a century of mass immigration from around the world; and the most populous Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a coastline of . It borders all other countries and territories in South America except Ecuador and Chile and covers roughly half of the continent's land area. Its Amazon basin includes a vast tropical forest, ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michèle De Saint Laurent
Michèle de Saint Laurent (December 9, 1926 – July 11, 2003) was a French carcinologist. She spent most of her career at the ' in Paris, working on the systematics of decapod crustaceans; her major contributions were to hermit crabs and Thalassinidea, and she also co-described ''Neoglyphea'', a living fossil discovered in 1975. Biography Michèle de Saint Laurent was born on December 9, 1926 at Fontainebleau, near Paris.Obituary by Jacques Forest, originally published in French as Forest (2004a), and later published in translation by Gary C. B. Poore as Forest (2004b). Her father, an army officer, retired on grounds of ill health in 1938 and moved with his family to Plestin-les-Grèves in Brittany; he died in 1939. During the Second World War, Michèle's mother concealed British airmen from the Nazi regime, for which she was convicted in 1942 by a military tribunal and sent to Ravensbrück concentration camp, where she died in 1944. Michèle married in 1950, taking the name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axiidae
Axiidae is a family (biology), family of thalassinidean crustaceans. It includes the following genera: *''Acanthaxius'' Sakai & de Saint Laurent, 1989 *''Allaxius'' Sakai & de Saint Laurent, 1989 *''Ambiaxius'' Sakai & de Saint Laurent, 1989 *''Anophthalmaxius'' de Man, 1905 *''Australocaris'' Poore & Collins, 2009 *''Axiopsis'' Borradaile, 1903 *''Axiorygma'' Kensley & Simmons, 1988 *''Axius (crustacean), Axius'' Leach, 1815 *''Bouvieraxius'' Sakai & de Saint Laurent, 1989 *''Calastacus'' Faxon, 1893 *''Calaxiopsis'' Sakai & de Saint Laurent, 1989 *''Calaxius'' Sakai & de Saint Laurent, 1989 *''Calocarides'' Wollebaek, 1908 *''Calocaris'' Bell, 1853 *''Coralaxius'' Kensley & Gore, 1981 *''Dorphinaxius'' Sakai & de Saint Laurent, 1989 *''Eiconaxius'' Bate, 1888 *''Eucalastacus'' Sakai, 1992 *''Eutrichocheles'' Wood-Mason, 1876 *''Formosaxius'' Komai, Lin & Chan, 2010 *''Levantocaris'' Galil & Clark, 1993 *''Litoraxius'' Komai & Tachikawa, 2007 *''Lophaxius'' Kensley, 1989 *''Mari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callianassidae
Callianassidae is a family (biology), family of Thalassinidea, ghost shrimp of the order (biology), order Decapoda. Subfamilies and genera ''Callianassidae'' is divided into 41 genera: * ''Aqaballianassa'' Poore, Dworschak, Robles, Mantelatto & Felder, 2019 * ''Arenallianassa'' Poore, Dworschak, Robles, Mantelatto & Felder, 2019 * ''Biffarius'' R.B. Manning & Felder, 1991 *†''Brecanclawu'' Schweitzer & Feldmann, 2001 * ''Callianassa'' Leach, 1814 * ''Caviallianassa'' Poore, Dworschak, Robles, Mantelatto & Felder, 2019 * ''Cheramoides'' K. Sakai, 2011 * ''Cheramus'' Bate, 1888 *†''Comoxianassa'' Schweitzer, Feldmann, Ćosović, Ross & Waugh, 2009 * ''Coriollianassa'' Poore, Dworschak, Robles, Mantelatto & Felder, 2019 *†''Cowichianassa'' Schweitzer, Feldmann, Ćosović, Ross & Waugh, 2009 *†''Eoglypturus'' Beschin, De Angeli, Checchi & Zarantonello, 2005 * ''Filhollianassa'' Poore, Dworschak, Robles, Mantelatto & Felder, 2019 * ''Fragillianassa'' Poore, Dworschak, Robles, ... [...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 opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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