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Camponotus Textor
''Camponotus textor'', also known as Brazilian weaver ant, is a species of fairly common tree-dwelling ant native to South and Central America. It is believed to include a number of cryptic species, and previously were considered synonymous to the cavity-dwelling ant '' Camponotus senex'', now thought to be only distantly-related. Ecology ''C. textor'' nests can be found across a number of tree species in Brazil, and they're dominant species wherever they're found. These ants will aggressively defend their nests whenever disturbed, while workers will produce a fairly loud hissing sound through tapping inside their nest with their abdomens. They undergo four larval instars during their development, and will pupate inside a cocoon. The last larval instar, mature larvae produce the silk used in spinning their nests, being held from behind by other workers. These hairy, plump larval have specialised hairs on their back armed with anchor-like projections at their tips, presumably for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auguste-Henri Forel
Auguste-Henri Forel (; 1 September 1848 – 27 July 1931) was a Swiss myrmecologist, neuroanatomist, psychiatrist and former eugenicist, notable for his investigations into the structure of the human brain and that of ants. He is considered a co-founder of the Neuron doctrine, neuron theory. Forel is also known for his early contributions to sexology and psychology. From 1978 until 2000 Forel's image appeared on the 1000 Banknotes of the Swiss franc, Swiss franc banknote. Early life Born in 1848 in a villa ''La Gracieuse'', at Morges, on Lake Geneva, Switzerland, to Victor Forel a pious Swiss Calvinist and Pauline Morin, a Huguenots, French Huguenot he was brought up in a protective household. Auguste Forel was born in 1848 at Morges on Lake Geneva in Switzerland. His great uncle, who was an entomologist, introduced Forel to insect natural history when he was young. After reading a book by Pierre Huber, he became interested in ants. Education He went to school at Morges and Lau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptic Species
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as plant varieties), which may be a complex ranking but it is not a species complex. In most cases, a species complex is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camponotus Senex
''Camponotus senex'' is a fairly common species of weaver ant from the New World. They are opportunistic cavity-dwellers, semi-nomadic carpenter ants which are found around grasslands in Central and South America. It is taxonomically believed to be a complex of cryptic species and was previously considered synonymous with ''Camponotus textor'' which once included a distantly-related species of weaver-ant. Ecology ''C. senex'' are medium-sized and agile, and can be frequently found inside the abandoned outer crusts of termite nests. They can inflict a respectable bite when handled carelessly. They are, however, not aggressive, and their nests tend to be sparse and mainly composed of satellite, queenless temporary nests under stones or bark. Very little is known about their biology as ''C. senex'' remains a poorly studied species, in spite of being so common. The development of ''C. senex'' undergoes four larval instars. The larvae are typical ''Camponotus'' larvae: plump and hair ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instar
An instar (, from the Latin '' īnstar'' 'form, likeness') is a developmental stage of arthropods, such as insects, which occurs between each moult (''ecdysis'') until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or assume a new form. Differences between instars can often be seen in altered body proportions, colors, patterns, changes in the number of body segments or head width. After shedding their exoskeleton (moulting), the juvenile arthropods continue in their life cycle until they either pupate or moult again. The instar period of growth is fixed; however, in some insects, like the salvinia stem-borer moth, the number of instars depends on early larval nutrition. Some arthropods can continue to moult after sexual maturity, but the stages between these subsequent moults are generally not called instars. For most insect species, an ''instar'' is the developmental stage of the larval forms of holometabolous (complete metamorphism) or ny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camponotus
Carpenter ants (''Camponotus'' spp.) are a genus of large ants (workers ) indigenous to many parts of the world. True carpenter ants build nests inside wood, consisting of galleries chewed out with their mandibles or jaws, preferably in dead, damp wood. However, unlike termites, they do not consume wood, but instead discard a material that resembles sawdust outside their nest. Sometimes, carpenter ants hollow out sections of trees. They also commonly infest wooden buildings and structures, causing a widespread problem: they are a major cause of structural damage. Nevertheless, their ability to excavate wood helps in forest decomposition. The genus includes over 1,000 species. They also farm aphids. In their farming, the ants protect the aphids from predators (usually other insects) while they excrete a sugary fluid called honeydew, which the ants get by stroking the aphids with their antennae. Description Carpenter ants are generally large ants: workers are usually 4–7&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaloid
Alkaloids are a broad class of natural product, naturally occurring organic compounds that contain at least one nitrogen atom. Some synthetic compounds of similar structure may also be termed alkaloids. Alkaloids are produced by a large variety of organisms including bacteria, fungus, fungi, Medicinal plant, plants, and animals. They can be purified from crude extracts of these organisms by acid-base extraction, or solvent extractions followed by silica-gel column chromatography. Alkaloids have a wide range of pharmacology, pharmacological activities including antimalarial medication, antimalarial (e.g. quinine), asthma, antiasthma (e.g. ephedrine), chemotherapy, anticancer (e.g. omacetaxine mepesuccinate, homoharringtonine), cholinomimetic (e.g. galantamine), vasodilation, vasodilatory (e.g. vincamine), Antiarrhythmic agent, antiarrhythmic (e.g. quinidine), analgesic (e.g. morphine), antibacterial (e.g. chelerythrine), and anti-diabetic, antihyperglycemic activities (e.g. berb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
