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Paratrigona Subnuda
''Paratrigona subnuda'', commonly known as the jataí-da-terra ("ground jataí"), is a species of eusocial stingless bee in the family Apidae and tribe Meliponini. These social bees are prevalent in Neotropical moist forests, including Brazilian Atlantic and other South American forests. They inhabit spherical nests in moist underground environments with their forest habitats. Within their Neotropical habitats the ''P. subnuda'' is considered to be a very successful and common species of bee. ''P. subnuda''’s main source of food is pollen and nectar from a large variety of native Mesoamerican tropical plants. They have been extensively studied due to social conflicts arising from single mate behaviors and particular virgin behaviors. ''P. subnuda'' also exhibits the particular daily behavior in which they open the nest entrance at dawn and close the entrance at dusk when all their activities are done. Taxonomy and phylogeny ''P. subnuda'' belongs to the family Apidae, but far ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetragonisca Angustula
''Tetragonisca angustula'' is a small eusocial stingless bee found in México, Central and South America. It is known by a variety of names in different regions (e.g.'' jataí, yatei, jaty, virginitas, angelitas inglesas, españolita, mariola, chipisas, virgencitas,'' and ''mariolitas''). A subspecies, ''Tetragonisca angustula fiebrigi'', occupies different areas in South America and has a slightly different coloration. ''T. angustula'' is a very small bee and builds unobtrusive nests, allowing it to thrive in urban areas. It also produces large amounts of honey, and is thus frequently kept in wooden hives by beekeepers. ''T. angustula'' hives are often overlooked, and since the bee lacks a stinger, it is not seen as a threat to humans. Many of their behaviors are concerned with colonizing a new nest and producing offspring, demonstrated by their swarming and nursing behaviors, however a special caste of ''T. angustula'' are soldiers who are slightly larger than the workers. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oviposition
The ovipositor is a tube-like organ used by some animals, especially insects, for the laying of eggs. In insects, an ovipositor consists of a maximum of three pairs of appendages. The details and morphology of the ovipositor vary, but typically its form is adapted to functions such as preparing a place for the egg, transmitting the egg, and then placing it properly. For most insects, the organ is used merely to attach the egg to some surface, but for many parasitic species (primarily in wasps and other Hymenoptera), it is a piercing organ as well. Some ovipositors only retract partly when not in use, and the basal part that sticks out is known as the scape, or more specifically oviscape, the word ''scape'' deriving from the Latin word '' scāpus'', meaning "stalk" or "shaft". In insects Grasshoppers use their ovipositors to force a burrow into the earth to receive the eggs. Cicadas pierce the wood of twigs with their ovipositors to insert the eggs. Sawflies slit the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swarming
Swarm behaviour, or swarming, is a collective behaviour exhibited by entities, particularly animals, of similar size which aggregate together, perhaps milling about the same spot or perhaps moving ''en masse'' or migrating in some direction. It is a highly interdisciplinary topic. As a term, ''swarming'' is applied particularly to insects, but can also be applied to any other entity or animal that exhibits swarm behaviour. The term '' flocking'' or ''murmuration'' can refer specifically to swarm behaviour in birds, ''herding'' to refer to swarm behaviour in tetrapods, and ''shoaling'' or ''schooling'' to refer to swarm behaviour in fish. Phytoplankton also gather in huge swarms called ''blooms'', although these organisms are algae and are not self-propelled the way animals are. By extension, the term "swarm" is applied also to inanimate entities which exhibit parallel behaviours, as in a robot swarm, an earthquake swarm, or a swarm of stars. From a more abstract point of v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atta (genus)
''Atta'' is a genus of New World ants of the subfamily Myrmicinae. It contains at least 17 known species. ''Atta'' leaf-cutter ants are relatively large, rusty red or brown in colour, and have a spiny body and long legs. The three main castes within a nest are the queen, worker, and soldier. Only the queens and males have wings (alate), and these ants are also known as reproductives or swarmers. Although most of the ants in the nest are female, only the queens produce eggs. Queens are usually over long. Overview Ants of the genus ''Atta'' are leafcutter ants that comprise one of the two genera of leafcutting ants within the tribe Attini, along with ''Acromyrmex''. They have no sting, thus inject no venom, although they are known as strong biters. ''Atta'' spp. exhibit a high degree of polymorphism, with four castes being present in established colonies: minims (or garden ants), minors, mediae, and majors (also called soldiers or dinergates). Their immature development underg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brood Comb
Brood may refer to: Nature * Brood, a collective term for offspring * Brooding, the incubation of bird eggs by their parents * Bee brood, the young of a beehive * Individual broods of North American Periodical Cicadas: ** Brood X, the largest brood, which emerges on a 17-year cycle ** Brood XIII, a brood centered on Northern Illinois and its surrounding area, which also emerges on a 17-year cycle ** Brood XIX, a large brood in the Southern United States which emerges on a 13-year cycle Research search has led to this discovery but should give source so as not to commit plagiarism. People with the surname * Herman Brood (1946–2001), Dutch musician, painter, actor, poet and media personality * Philippe Brood (1964–2000), Dutch politician Entertainment * ''The Brood'', a 1979 horror film directed by David Cronenberg * Brood (comics), an alien species from the Marvel Comics universe * The Brood (professional wrestling), and The New Brood, WWF professional wrestling stables ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicoid
The helicoid, also known as helical surface, after the plane and the catenoid, is the third minimal surface to be known. Description It was described by Euler in 1774 and by Jean Baptiste Meusnier in 1776. Its name derives from its similarity to the helix: for every point on the helicoid, there is a helix contained in the helicoid which passes through that point. Since it is considered that the planar range extends through negative and positive infinity, close observation shows the appearance of two parallel or mirror planes in the sense that if the slope of one plane is traced, the co-plane can be seen to be bypassed or skipped, though in actuality the co-plane is also traced from the opposite perspective. The helicoid is also a ruled surface (and a right conoid), meaning that it is a trace of a line. Alternatively, for any point on the surface, there is a line on the surface passing through it. Indeed, Catalan proved in 1842 that the helicoid and the plane were the only rul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Involucrum
An involucrum (plural involucra) is a layer of new bone growth outside existing bone. There are two main contexts: * In pyogenic osteomyelitis where it is a layer of living bone that has formed about dead bone. It can be identified by radiographically (i.e., with x-rays). * In cetaceans such as whales, it is a thick covering of bone over the middle-ear space. See also *Sequestrum A sequestrum (plural: sequestra) is a piece of dead bone that has become separated during the process of necrosis from normal or sound bone. It is a complication (sequela) of osteomyelitis. The pathological process is as follows: * infection in t ... References Skeletal system {{Musculoskeletal-stub ... [...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 of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
São Paulo
São Paulo (, ; Portuguese for 'Saint Paul') is the most populous city in Brazil, and is the capital of the state of São Paulo, the most populous and wealthiest Brazilian state, located in the country's Southeast Region. Listed by the GaWC as an alpha global city, São Paulo is the most populous city proper in the Americas, the Western Hemisphere and the Southern Hemisphere, as well as the world's 4th largest city proper by population. Additionally, São Paulo is the largest Portuguese-speaking city in the world. It exerts strong international influences in commerce, finance, arts and entertainment. The city's name honors the Apostle, Saint Paul of Tarsus. The city's metropolitan area, the Greater São Paulo, ranks as the most populous in Brazil and the 12th most populous on Earth. The process of conurbation between the metropolitan areas around the Greater São Paulo (Campinas, Santos, Jundiaí, Sorocaba and São José dos Campos) created the São Paulo Macrometr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Catarina (state)
Santa Catarina (, ) is a States of Brazil, state in the South Region, Brazil, South Region of Brazil. It is the List of Brazilian states by area, 7th smallest state in total area and the List of Brazilian states by population, 11th most populous. Additionally, it is the 9th largest settlement, with List of municipalities in Santa Catarina, 295 municipalities. The state, with 3.4% of the Brazilian population, generates 3.8% of the national GDP. Santa Catarina is bordered by Paraná (state), Paraná to the north, Rio Grande do Sul to the south, the Atlantic Ocean to the east, and the Provinces of Argentina, Argentine province of Misiones Province, Misiones to the west. The coastline is over 450 km, i.e., about half of Portugal's mainland coast. The seat of the state executive, Legislature, legislative and judiciary powers is the capital Florianópolis. Joinville, however, is the most populous city in the state. Besides Espírito Santo, Santa Catarina is the only state whose ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rio Grande Do Sul
Rio Grande do Sul (, , ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative_units_of_Brazil#List, fifth-most-populous state and the List of Brazilian states by area, ninth largest by area. Located in the southernmost part of the country, Rio Grande do Sul is bordered clockwise by Santa Catarina (state), Santa Catarina to the north and northeast, the Atlantic Ocean to the east, the Uruguayan Departments of Uruguay, departments of Rocha Department, Rocha, Treinta y Tres Department, Treinta y Tres, Cerro Largo Department, Cerro Largo, Rivera Department, Rivera and Artigas Department, Artigas to the south and southwest, and the Argentina, Argentine Provinces of Argentina, provinces of Corrientes Province, Corrientes and Misiones Province, Misiones to the west and northwest. The capital and largest city is Porto Alegre. The state has the highest life expectancy in Brazil, and the crime rate i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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