1913 Asmara earthquake and Honey bee: Difference between pages

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{{Unreferenced|date=May 2007}}

The '''1913 Asmara Earthquake''' was a [[Earthquake|seismic movement]] that took place outside [[Asmara]], [[Eritrea]] on [[1915-02-27]]. The data as to the magnitude of the earthquake is imprecise due to the frequency and magnitude of aftershocks.<ref>{{cite book|last=Ambrayses |first=Nicholas|coauthors = Melville, C.P., Adams, R.D.|title=The Seismicity of Egypt, Arabia and the Red Sea: A Historical Review|publisher=Cambridge University Press|date=[[1994]]|isbn = 0-521-39120-2}}</ref> The "felt" area of the earthquake extended into Northern [[Ethiopia]] as well as [[Kassala]] in [[Sudan]]. This earthquake caused significant damage in Asmara and nearby [[Keren]].

{{otheruses}}

{{Taxobox

| color = pink

| name = Honey bees

| image = Bee on Geraldton Wax Flower.JPG

| image_width = 250px

| regnum = [[Animal]]ia

| phylum = [[Arthropod]]a

| classis = [[Insect]]a

| ordo = [[Hymenoptera]]

| familia = [[Apidae]]

| tribus = '''Apini'''

| genus = '''''Apis'''''

| genus_authority = [[Linnaeus]], 1758

| subdivision_ranks = Species

| subdivision =

''[[Apis andreniformis]]''<br/>

''[[Apis cerana]]'', or eastern honey bee<br/>

''[[Apis dorsata]]'', or giant honey bee<br/>

''[[Apis florea]]'', or dwarf honey bee <br/>

''[[Apis koschevnikovi]]'' <br/>

''[[Apis mellifera]]'', or western honey bee<br/>

''[[Apis nigrocincta]]''

}}

[[Image:Bees Collecting Pollen 2004-08-14.jpg|thumb|right|200px|Bee collecting pollen.]]

[[Image:Honeybee thermal defence01.jpg|thumb|200px|''[[Apis cerana]]'' forming a ball around two [[hornet]]s. The body heat trapped by the ball will overheat and kill the hornets.]]

[[Image:Honeybee02.jpg|thumb|right|200px|Working bees.]]

:''This article refers collectively to all true honey bees; for the "common" domesticated honey bee, see [[Western honey bee]]''

'''Honey bees''' (or '''honeybees''') are a subset of [[bee]]s which represent a far smaller fraction of bee diversity than most people suspect; of the approximately 20,000 known species of bees, there are only seven presently-recognized species with a total of 44 subspecies (Engel, 1999; historically, anywhere from six to eleven species have been recognized). These bees are the only living members of the tribe Apini, all in the genus ''Apis'', and all of which produce and store liquefied [[sugar]] ("[[honey]]") to some degree, and construct colonial nests out of [[wax]] secreted by the workers in the colony. Other types of related bees produce and store honey, but only members of the genus ''Apis'' are considered true honey bees.

==References==

<references />

==Origin and distribution of the genus ''Apis''==

{{Eritrea-stub}}

Honey bees as a group appear to have their center of origin in [[Southeast Asia]] (including the [[Philippines]]), as all but one of the extant species are native to that region, including the most primitive living species (''[[Apis florea]]'' and ''[[A. andreniformis]]''). The first ''Apis'' bees appear in the [[fossil record]] in deposits dating about 35 million years ago during the [[Oligocene]] period; that these fossils are from [[Europe]] does not necessarily indicate that Europe is where the genus originated, as the likelihood of fossils being found in Southeast Asia is very small, even if that is the true origin. The ancestors and close relatives of modern honey bees were all already social and so social behavior predates the origin of the genus. Among the extant members of the genus, the more ancient species make single, exposed combs, while the more recently-evolved species nest in cavities and have multiple combs, which has greatly facilitated their domestication.

Most species have historically been cultured or at least exploited for honey and [[beeswax]] by humans indigenous to their native ranges. Only two of these species have been domesticated, one (''[[Apis mellifera]]'') at least since the time of the building of the [[Egyptian pyramid]]s, and only that species has been moved extensively beyond its native range.

[[Category:Earthquakes in Eritrea|Asmara]]

[[Category:Earthquakes in the 20th century|Earthquakes in the 20th century]]

==Common Species==

[[Category:1913 natural disasters|Asmara]]

====Common (or European) ====

{{main|Apis mellifera}}

[[Image:Serbian bees.JPG|thumb|Honey bees (Apis Mellifera) in [[Serbia]]]]

''Apis mellifera'', the most commonly domesticated species, is the third insect to have its genome mapped. It originated in Tropical [[Africa]] and spread from there to [[Northern Europe]] and East into [[Asia]]. It is also called the [[Western honeybee|Western honey bee]]. There are many sub-species that have adapted to the environment of their geographic and climatic area. Behavior, color and anatomy can be quite different from one sub-species or race to another. In [[1622]], first European colonists brought the sub-species ''[[Apis mellifera mellifera]]'' to [[the Americas]]. Many of the crops that depend on honey bees for pollination have also been imported since colonial times. Escaped swarms (known as wild bees, but actually [[feral]]) spread rapidly as far as the [[Great Plains]], usually preceding the colonists. The [[Native Americans in the United States|Native Americans]] called the honey bee "the white man's fly". Honey bees did not naturally cross the [[Rocky Mountains]]; they were carried by ship to [[California]] in the early [[1850s]]. The so-called "[[killer bee]]" is a strain of this species, with ancestral stock of African origin (thus often called "Africanized"). In early 2007, abnormally high die-offs (30-70% of hives) of Western honey bee colonies in the US were attributed to a condition dubbed "[[Colony Collapse Disorder]]".

====Dwarf and Eastern====

*''[[Apis florea]]'' and ''[[Apis cerana]]'' are small honey bees of southern and southeastern Asia. The former makes very small, exposed nests in trees and shrubs, while the latter makes nests in cavities and is sometimes managed in hives in a similar fashion to ''[[Apis mellifera]]'', though on a much smaller and regionalized scale. The stings of ''A. florea'' are often not capable of penetrating human skin, so the [[Beehive (beekeeping)|hive]] and [[swarm]]s can be handled with minimal protection.

[[Image:ApisDorsataHive.jpg|200px|thumb|left|a colony of ''[[Apis dorsata]]'']]

====Giant====

*''[[Apis dorsata]]'', the giant honey bee, is native to south and southeastern Asia, and usually makes its exposed combs on high tree limbs, or on cliffs, and sometimes on buildings. It is wild and can be very fierce. It is robbed of its honey periodically by human honey gatherers, a practice known as honey hunting. Its colonies are easily capable of stinging a human being to death when provoked.

== Beekeeping ==

[[Image:Bees by nkt.jpg|200px|thumb|left|Beekeeping: An opened [[Langstroth hive]] with bees on top of [[Frame (beehive)|frames]]]]

{{main|Beekeeping}}

Two species of honey bee, ''A. mellifera'' and ''A. cerana'', are often maintained, fed, and transported by [[beekeeping|beekeepers]]. Modern hives also enable beekeepers to transport bees, moving from field to field as the crop needs pollinating and allowing the beekeeper to charge for the pollination services they provide, revising the historical role of the self-employed beekeeper, and favoring large-scale commercial operations. For further information see the main article, or the articles for these species.

==Life cycle==

[[Image:Bienenkoenigin.JPG|thumb|200px|[[Queen bee]]. Yellow dot is added to aid beekeeper.See Main article.]]

[[Image:HoneyBeeAnatomy.png|thumb|200px|"Morphology of a female honey bee."]]

Like other [[eusocial]] bees, a colony generally contains one breeding female, or "[[Queen (bee)|queen]]"; seasonally up to a few thousand males, or "[[Drone (bee)|drones]]"; and a large seasonally variable population of sterile female workers. Many minor details vary among the different species of honeybees, though there are some common features.

[[Image:Bienenwabe mit Eiern 39.jpg|thumb|left|300px|Eggs]]

[[Image:Bienenwabe mit Eiern und Brut 5.jpg|thumb|left|300px|Eggs and larvae]]

Eggs are laid singly in a cell in a wax honeycomb, produced and shaped by the workers. Larvae are initially fed with [[royal jelly]] produced by worker bees, later switching to honey and pollen. The exception is a larva fed solely on royal jelly, which will develop into a queen bee. The larva undergoes several moltings before spinning a [[Pupa#Cocoon|cocoon]] within the cell, and [[pupate|pupating]].

Young worker bees clean the hive and feed the larvae. After this, they begin building comb cells. They progress to other within-colony tasks as they become older, such as receiving nectar and pollen from foragers. Later still, a worker leaves the hive and typically spends the remainder of its life as a forager.

Workers cooperate to find food and use a pattern of "dancing" (known as ''the [[Bee learning and communication#Dance language|bee dance or waggle dance]]'') to communicate with each other; this dance varies from species to species, but all living species of ''[[Apis]]'' exhibit some form of the behavior.

Honey bees also perform [[Tremble dances]] which recruit receiver bees to collect nectar from returning foragers .

Virgin queens go on mating flights away from their home colony, and mate with multiple drones before returning. The drones die in the act of mating.

[[Image:Drinking Bee.jpg|thumb|right|200px|Drinking Bee]]

Colonies are established not by solitary queens, as in most bees, but by groups known as "[[Swarming (honey bee)|swarm]]s" which consist of a mated queen and a large contingent of workers. This group moves ''en masse'' to a nest site that has been scouted by workers beforehand, and once they arrive they immediately construct a new comb and begin to raise a new worker brood. This type of nest founding is not seen in any other living bee genus, though there are several groups of [[Vespid]] wasps which also found new nests via swarming (sometimes including multiple queens). Also, [[stingless bee]]s will start new nests with large numbers of workers, but the nest is constructed before a queen is escorted to the site, which is not a true "swarm".

== Products ==

===Pollination===

{{main|Pollination management}}

Species of ''Apis'' are generalist floral visitors, and will pollinate a large variety of plants, but by no means ''all'' plants. Of all the honeybee species, only ''[[Apis mellifera]]'' has been used extensively for commercial pollination of crops and other plants. The value of these pollination services is commonly measured in the billions of [[dollar]]s.

===Honey===

{{main|Honey}}

Honey is the complex substance made when the nectar and sweet deposits from plants and trees are gathered, modified and stored in the honeycomb by honey bees. All living species of ''Apis'' have had their honey gathered by indigenous peoples for consumption, though for commercial purposes only ''A. mellifera'' and ''A. cerana'' have been exploited to any degree. Honey is sometimes also gathered by humans from the nests of various [[Stingless bee]]s.

===Beeswax===

{{main|Beeswax}}

[[Image:Bee wax.JPG|thumb|Honey combs]]

Worker bees of a certain age will secrete [[beeswax]] from a series of glands on their [[abdomens]]. They use the wax to form the walls and caps of the comb. As with honey, most indigenous peoples will gather beeswax for various purposes.

===Pollen===

{{main|Pollen}}

Bees collect pollen in the [[pollen basket]] and carry it back to the hive. In the hive, pollen is used as a [[protein]] source necessary during brood-rearing. In certain environments, excess pollen can be collected from the hives of ''A. mellifera'' and ''A. cerana''. It is often eaten as a health supplement.

===Propolis===

{{main|Propolis}}

[[Propolis]] (or bee glue) is created from resins, balsams and [[Sap (plant)|tree sap]]s. Those species of honey bees which nest in tree cavities use propolis to seal cracks in the hive. Propolis is also used in some cosmetics.

==Defense==

All honey bees live in colonies where the workers will sting intruders as a form of defense, and alarmed bees will release a [[pheromone]] that stimulates the attack response in other bees. The different species of honey bees are distinguished from all other bee species by the possession of small barbs on the [[sting (biology)|sting]], but these barbs are found only in the workers. The sting and associated venom sac are also modified so as to pull free of the body once lodged ([[autotomy]]), and the sting apparatus has its own musculature and [[ganglion]] which allow it to keep delivering venom once detached.

It is presumed that this complex apparatus, including the barbs on the sting, evolved specifically in response to predation by vertebrates, as the barbs do not usually function (and the sting apparatus does not detach) unless the sting is embedded in fleshy tissue. While the sting can also penetrate the flexible exoskeletal joints in appendages of other insects (and is used in fights between queens), in the case of ''[[Apis cerana]]'' defense against other insects such as predatory wasps is usually performed by surrounding the intruder with a mass of defending workers, who vibrate their muscles so vigorously that it raises the temperature of the intruder to a lethal level. This is also used to kill a queen perceived as intruding or defective, an action known to beekeepers as ''balling the queen'', named for the ball of bees formed.

==Communication==

:''See also: [[Bee learning and communication]]

Honey bees are known to communicate through many different chemicals and odors, as is common in insects, but also using specific behaviors that convey information about the quality and type of resources in the environment, and where these resources are located. The details of the signaling being used vary from species to species; for example, the two smallest species, ''[[Apis andreniformis]]'' and ''[[Apis florea]]'', dance on the upper surface of the comb, which is horizontal (not vertical, as in other species), and workers orient the dance in the actual compass direction of the resource to which they are recruiting.

==Political Theory==

Bee Wilson (2004: p.4) states that a community of honey bees have often been employed historically by political theorists as a model of human society: <blockquote>

This image occurs in [[Aristotle]] and [[Plato]]; in [[Virgil]] and [[Seneca]]; in [[Erasmus]] and [[Shakespeare]]; in [[Marx]] and [[Tolstoy]].</blockquote>

Moreover, Napoleon used bees as one of his royal emblems.

==See also==

{{Wiktionary}}

*[[Apiology]]

*[[Bee]]

*[[Beekeeping]]

*[[Bees and toxic chemicals]]

== Footnotes ==

{{reflist}}

== References ==

*[[Michael S. Engel|Engel, M.S.]] (1999) The taxonomy of recent and fossil honey bees (Hymenoptera: Apidae: ''Apis''). ''Journal of Hymenoptera Research'' '''8''': 165-196.

*[[Michael S. Engel|Engel, M.S.]], [[David Grimaldi|Grimaldi, D.]] (2005) "Evolution of the insects". [[Cambridge University Press]].

*Kak, Subhash C. (2001) "The Honey Bee Dance Language Controversy". ''The Mankind Quarterly''

*Lindauer, Martin. (1971) "Communication among social bees". [[Harvard University Press]].

*Wilson, Bee (2004). ''The Hive: The Story Of The Honeybee''. London, Great Britain: John Murray (Publishers). ISBN 0 7195 6598 7

== External links==

[http://www.pbs.org/wnet/nature/alienempire/multimedia/hive.html Interactive 3-D flash presentation of honey beehive] from PBS

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[[Category:Pollinators]]

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