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Waggle Dance
Waggle dance is a term used in beekeeping and ethology for a particular figure-eight dance of the honey bee. By performing this dance, successful foragers can share information about the direction and distance to patches of flowers yielding nectar and pollen, to water sources, or to new nest-site locations with other members of the colony. The waggle dance and the round dance are two forms of dance behaviour that are part of a continuous transition. As the distance between the resource and the hive increases, the round dance transforms into variations of a transitional dance, which, when communicating resources at even greater distances, becomes the waggle dance. In the case of '' Apis mellifera ligustica'', the round dance is performed until the resource is about 10 metres away from the hive, transitional dances are performed when the resource is at a distance of 20 to 30 metres away from the hive, and finally, when it is located at distances greater than 40 metres from the h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Dwarf Honeybee
''Apis andreniformis'', or the black dwarf honey bee, is a relatively rare species of honey bee whose native habitat is the tropical and subtropical regions of Southeast Asia. ''A. andreniformis'' was the fifth honey bee species to be described of the seven known species of '' Apis''. Until recently, however, the actual identity of the species was poorly understood. It was not recognized as its own species, but was instead considered to be a part of the species '' Apis florea.'' Recent studies have highlighted notable differences between the bees and have thus separated them into distinct species. Taxonomy and phylogeny ''Apis andreniformis'' is a part of the family Apidae, which includes honey, cuckoo, carpenter, digger, bumble, and stingless bees. The genus ''Apis'' includes honey bees, the most common being ''Apis mellifera'', otherwise known as the Western honey bee. ''A. andreniformis'' is most closely related to ''Apis florea'', its sister species with which it is commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand De Saussure
Ferdinand Mongin de Saussure (; ; 26 November 185722 February 1913) was a Swiss linguist, semiotician and philosopher. His ideas laid a foundation for many significant developments in both linguistics and semiotics in the 20th century. He is widely considered one of the founders of 20th-century linguistics and one of two major founders (together with Charles Sanders Peirce) of semiotics, or ''semiology'', as Saussure called it. One of his translators, Roy Harris, summarized Saussure's contribution to linguistics and the study of "the whole range of human sciences. It is particularly marked in linguistics, philosophy, psychoanalysis, psychology, sociology and anthropology." Although they have undergone extension and critique over time, the dimensions of organization introduced by Saussure continue to inform contemporary approaches to the phenomenon of language. As Leonard Bloomfield stated after reviewing Saussure's work: "he has given us the theoretical basis for a science of h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apis Dorsata
''Apis dorsata'', the rock bee or giant honey bee, is a honey bee of South and Southeast Asia. They are typically around long and nests are mainly built in exposed places far off the ground, like on tree limbs, under cliff overhangs, and under buildings. These social bees are known for their aggressive defense strategies and vicious behavior when disturbed. Though not domesticated, indigenous peoples have traditionally used this species as a source of honey and beeswax, a practice known as honey hunting. Taxonomy and phylogeny ''Apis dorsata'' belongs to the family Apidae, which is in the class Insecta. This honeybee is most closely related to ''Apis mellifera'' (the western honey bee), ''Apis cerana'', and ''Apis florea''. ''Apis dorsata'' belongs to the subgenus ''Megapis''. There are a few hypotheses as to when ''Apis dorsata'' diverged from both ''Apis florea'' and ''Apis cerana,'' as it is unclear which divergence occurred first. Currently, the consensus hypothesis provides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apis Mellifera Carnica Worker Honeycomb 3
Apis or APIS may refer to: *Apis (deity), an ancient Egyptian god *Apis (Greek mythology), several different figures in Greek mythology *Apis (city), an ancient seaport town on the northern coast of Africa * ''Apis'' (genus), the genus of the honey bee *Apis, a fictional character from One Piece anime-only Warship Island arc *Apis (constellation), an obsolete name for Musca *Dragutin Dimitrijević (1876–1917), known as "Apis", Serbian colonel and coup organiser, leader of the Black Hand group *Albastar Apis, a Slovenian motor glider *Wezel Apis 2, a German motor glider *Advance Passenger Information System, an electronic data interchange system *Aircraft Positioning and Information System, an airport stand guidance system See also * API (other) for "APIs" **Application programming interface An application programming interface (API) is a connection between computers or between computer programs. It is a type of software Interface (computing), interface, offering a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johnston's Organ
Johnston's organ is a collection of sensory cells found in the pedicel (the second segment) of the antennae in the class Insecta. Johnston's organ detects motion in the flagellum (third and typically final antennal segment). It consists of scolopidia arrayed in a bowl shape, each of which contains a mechanosensory chordotonal neuron. The number of scolopidia varies between species. In homopterans, the Johnston's organs contain 25–79 scolopidia. The presence of Johnston's organ is a defining characteristic which separates the class Insecta from the other hexapods belonging to the group Entognatha. Johnston's organ was named after the physician Christopher Johnston (1822-1891) father of the physician and Assyriologist Christopher Johnston. Function In fruit flies, midges and mosquitoes In the fruit fly ''Drosophila melanogaster and Chironomus annularius'', the Johnston's organ contains almost 480 sensory neurons. In the mosquito, the Johnston's organ houses ~15 000 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axons
An axon (from Greek ἄξων ''áxōn'', axis) or nerve fiber (or nerve fibre: see spelling differences) is a long, slender projection of a nerve cell, or neuron, in vertebrates, that typically conducts electrical impulses known as action potentials away from the nerve cell body. The function of the axon is to transmit information to different neurons, muscles, and glands. In certain sensory neurons ( pseudounipolar neurons), such as those for touch and warmth, the axons are called afferent nerve fibers and the electrical impulse travels along these from the periphery to the cell body and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction can be the cause of many inherited and acquired neurological disorders that affect both the peripheral and central neurons. Nerve fibers are classed into three types group A nerve fibers, group B nerve fibers, and group C nerve fibers. Groups A and B are myelinated, and group C are unmyelina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanoreceptor
A mechanoreceptor, also called mechanoceptor, is a sensory receptor that responds to mechanical pressure or distortion. Mechanoreceptors are located on sensory neurons that convert mechanical pressure into action potential, electrical signals that, in animals, are sent to the central nervous system. Vertebrate mechanoreceptors Cutaneous mechanoreceptors Cutaneous mechanoreceptors respond to mechanical stimuli that result from physical interaction, including pressure and vibration. They are located in the skin, like other cutaneous receptors. They are all innervated by Aβ fibers, except the mechanorecepting free nerve endings, which are innervated by A delta fiber, Aδ fibers. Cutaneous mechanoreceptors can be categorized by what kind of sensation they perceive, by the rate of adaptation, and by morphology. Furthermore, each has a different receptive field. By sensation * The Slowly Adapting type 1 (SA1) mechanoreceptor, with the Merkel corpuscle end-organ (also known as M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flagellum
A flagellum (; : flagella) (Latin for 'whip' or 'scourge') is a hair-like appendage that protrudes from certain plant and animal sperm cells, from fungal spores ( zoospores), and from a wide range of microorganisms to provide motility. Many protists with flagella are known as flagellates. A microorganism may have from one to many flagella. A gram-negative bacterium '' Helicobacter pylori'', for example, uses its flagella to propel itself through the stomach to reach the mucous lining where it may colonise the epithelium and potentially cause gastritis, and ulcers – a risk factor for stomach cancer. In some swarming bacteria, the flagellum can also function as a sensory organelle, being sensitive to wetness outside the cell. Across the three domains of Bacteria, Archaea, and Eukaryota, the flagellum has a different structure, protein composition, and mechanism of propulsion but shares the same function of providing motility. The Latin word means " whip" to describe its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coulomb's Law
Coulomb's inverse-square law, or simply Coulomb's law, is an experimental scientific law, law of physics that calculates the amount of force (physics), force between two electric charge, electrically charged particles at rest. This electric force is conventionally called the ''electrostatic force'' or Coulomb force. Although the law was known earlier, it was first published in 1785 by French physicist Charles-Augustin de Coulomb. Coulomb's law was essential to the development of the classical electromagnetism, theory of electromagnetism and maybe even its starting point, as it allowed meaningful discussions of the amount of electric charge in a particle. The law states that the magnitude, or absolute value, of the attractive or repulsive electrostatic force between two point Electric charge, charges is directly proportional to the product of the magnitudes of their charges and inversely proportional to the square of the distance between them. Coulomb discovered that bodies with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apis Cerana
''Apis cerana'', the eastern honey bee, Asiatic honey bee or Asian honey bee, is a species of honey bee native to South, Southeast and East Asia. This species is the sister species of '' Apis koschevnikovi'' and both are in the same subgenus as the western (European) honey bee, '' Apis mellifera''. Engel, M.S. (1999) The taxonomy of recent and fossil honey bees (Hymenoptera: Apidae: ''Apis''). ''Journal of Hymenoptera Research'' 8: pp. 165–196. ''A. cerana'' is known to live sympatrically along with '' Apis koschevnikovi'' within the same geographic location. ''Apis cerana'' colonies are known for building nests consisting of multiple combs in cavities containing a small entrance, presumably for defense against invasion by individuals of another nest.Nanork, P., et al. "Social parasitism by workers in queenless and queenright Apis cerana colonies." Molecular ecology 16.5 (2007): 1107-1114. The diet of this honey bee species consists mostly of pollen and nectar, or honey.Haydak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flower Constancy
Flower constancy or pollinator constancy is a behavior of pollinators wherein an individual exclusively visits a single flower species or morph to the exclusion of other flowers from which it could obtain resources. Constancy is distinct from specialization, where the pollinator is evolved such that it can only derive resources from a few species. Constancy is also not a fixed preference; the same individual may exhibit constancy for different flowers on different bouts of foraging. This type of foraging behavior puts selective pressures on floral traits in a process called pollinator-mediated selection. Flower constancy is different from other types of insect specialization such as innate preferences for certain colors or flower types or focusing foraging effort on the most rewarding flowers. Flower constancy has been observed for insect pollinators: especially honeybees (''Apis mellifera''), a bumblebee ('' Bombus terrestris''), and a butterfly ('' Thymelicus sylvestris''). F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
