Ahoney bee (also spelled honeybee) is a eusocial flying insect within the genus Apis of the bee clade, all native to mainland Afro-Eurasia.[1][2] After bees spread naturally throughout Africa and Eurasia, humans became responsible for the current cosmopolitan distribution of honey bees, introducing multiple subspecies into South America (early 16th century), North America (early 17th century), and Australia (early 19th century).[1]
Honey bees are known for their construction of perennial colonial nests from wax, the large size of their colonies, and surplus production and storage of honey, distinguishing their hives as a prized foraging target of many animals, including honey badgers, bears and human hunter-gatherers. Only 8 surviving species of honey bee are recognized, with a total of 43 subspecies, though historically 7 to 11 species are recognized. Honey bees represent only a small fraction of the roughly 20,000 known species of bees.
The best known honey bee is the western honey bee, (Apis mellifera), which was domesticated for honey production and crop pollination. The only other domesticated bee is the eastern honey bee (Apis cerana), which occurs in South, Southeast, and East Asia. Only members of the genus Apis are true honey bees,[3] but some other types of bees produce and store honey and have been kept by humans for that purpose, including the stingless bees belonging to the genus Melipona and the Indian stingless or dammar bee Tetragonula iridipennis. Modern humans also use beeswax in making candles, soap, lip balms and various cosmetics, as a lubricant and in mould-making using the lost wax process.
The genus name Apis is Latin for "bee".[4][5] Although modern dictionaries may refer to Apis as either honey bee or honeybee, entomologist Robert Snodgrass asserts that correct usage requires two words, i.e., honey bee, because it is a kind or type of bee. It is incorrect to run the two words together, as in dragonfly or butterfly, which are appropriate because dragonflies and butterflies are not flies.[6] Honey bee, not honeybee, is the listed common name in the Integrated Taxonomic Information System, the Entomological Society of America Common Names of Insects Database, and the Tree of Life Web Project.[7][8][9]
Honey bees appear to have their center of origin in South and Southeast Asia (including the Philippines), as all the extant species except Apis mellifera are native to that region. Notably, living representatives of the earliest lineages to diverge (Apis florea and Apis andreniformis) have their center of origin there.[2]
No Apis species existed in the New World during human times before the introduction of A. mellifera by Europeans. Only one fossil species is documented from the New World, Apis nearctica, known from a single 14 million-year-old specimen from Nevada.[10]
Most species have historically been cultured or at least exploited for honey and beeswax by humans indigenous to their native ranges. Only two species have been truly domesticated: Apis mellifera and Apis cerana. A. mellifera has been cultivated at least since the time of the building of the Egyptian pyramids, and only that species has been moved extensively beyond its native range.[15]
Apis florea and Apis andreniformis are small honey bees of southern and southeastern Asia. They make very small, exposed nests in trees and shrubs. Their stings are often incapable of penetrating human skin, so the hive and swarms can be handled with minimal protection. They occur largely sympatrically, though they are very distinct evolutionarily and are probably the result of allopatric speciation, their distribution later converging.
Given that A. florea is more widely distributed and A. andreniformis is considerably more aggressive, honey is, if at all, usually harvested from the former only. They are the most ancient extant lineage of honey bees, maybe diverging in the Bartonian (some 40 million years ago or slightly later) from the other lineages, but do not seem to have diverged from each other a long time before the Neogene.[14] Apis florea have smaller wing spans than its sister species.[16] Apis florea are also completely yellow with the exception of the scutellum of workers, which is black.[16]
Two species are recognized in the subgenus Megapis. They usually build single or a few exposed combs on high tree limbs, on cliffs, and sometimes on buildings. They can be very fierce. Periodically robbed of their honey by human "honey hunters", colonies are easily capable of stinging a human being to death if provoked.
Koschevnikov's honey bee (Apis koschevnikovi) is often referred to in the literature as the "red bee of Sabah"; however, A. koschevnikovi is pale reddish in Sabah State, Borneo, Malaysia, but a dark, coppery colour in the Malay Peninsula and Sumatra, Indonesia.[19] Its habitat is limited to the tropical evergreen forests of the Malay Peninsula, Borneo and Sumatra and they do not live in tropical evergreen rain forests which extend into Thailand, Myanmar, Cambodia and Vietnam.[19]
It has not been possible yet to resolve its relationship to the Bornean honey bee A. c. nuluensis and Apis nigrocincta from the Philippines to satisfaction; some researchers argue that these are indeed distinct species, but that A. cerana as defined is still paraphyletic, consisting of several separate species,[14] though other researchers argue cerana is a single monophyletic species.[21]
A. mellifera, the most common domesticated[22] species, was first domesticated before 2600 BC[23] and was the third insect to have its genome mapped. It seems to have originated in eastern tropical Africa and spread from there to Europe and eastwards into Asia to the Tian Shan range. It is variously called the European, western, or common honey bee in different parts of the world. Many subspecies have adapted to the local geographic and climatic environments; in addition, breeds such as the Buckfast bee have been bred. Behavior, colour, and anatomy can be quite different from one subspecies or even strain to another.[24]
A. mellifera phylogeny is the most enigmatic of all honey bee species. It seems to have diverged from its eastern relatives only during the Late Miocene. This would fit the hypothesis that the ancestral stock of cave-nesting honey bees was separated into the western group of East Africa and the eastern group of tropical Asia by desertification in the Middle East and adjacent regions, which caused declines of food plants and trees that provided nest sites, eventually causing gene flow to cease.[24]
Apis mellifera is not native to the Americas, so it was not present when the European explorers and colonists arrived. However, other native bee species were kept and traded by indigenous peoples.[25] In 1622, European colonists brought the German honey bee (A. m. mellifera) to the Americas first, followed later by the Italian honey bee (A. m. ligustica) and others. Many of the crops that depend on western honey bees for pollination have also been imported since colonial times. Escaped swarms (known as "wild" honey bees, but actually feral) spread rapidly as far as the Great Plains, usually preceding the colonists. Honey bees did not naturally cross the Rocky Mountains; they were transported by the Mormon pioneers to Utah in the late 1840s, and by ship to California in the early 1850s.[26]
Africanized honey bees (known colloquially as "killer bees") are hybrids between European stock and the East African lowland subspecies A. m. scutellata; they are often more aggressive than European honey bees and do not create as much of a honey surplus, but are more resistant to disease and are better foragers.[27] Accidentally released from quarantine in Brazil, they have spread to North America and constitute a pest in some regions. However, these strains do not overwinter well, so they are not often found in the colder, more northern parts of North America. The original breeding experiment for which the East African lowland honey bees were brought to Brazil in the first place has continued (though not as originally intended). Novel hybrid strains of domestic and re-domesticated Africanized honey bees combine high resilience to tropical conditions and good yields. They are popular among beekeepers in Brazil.[citation needed]
As in a few other types of eusocial bees, a colony generally contains one queen bee, a female; seasonally up to a few thousand drone bees, or males;[29] and tens of thousands of female worker bees. Details vary among the different species of honey bees, but common features include:
Species of Apis are generalist floral visitors, and pollinate many species of flowering plants, but because of their "generalized" nature, they often do so inefficiently. Without specialized adaptations for specific flowers, their ability to reach pollen and nectar is often limited. This combined with their behavioural flexibility may be why they are the most commonly documented pollen thieves.[34] Indeed, for plant species with more specialized pollinators, experiments show that increased honeybee visitation can actually reduce pollination, both where honey bees are non-native[35] and even where they are native.[36] What's more, their tendency to visit all species in a given area means that the pollen they carry for any one species is often very diluted. As such, they can provide some pollination to many plants, but most plants have some native pollinator that is more effective at pollinating that species.[37] When honey bees are present as an invasive species in an area, they compete for flowers with native pollinators, which can actually push out the native species.[38]
Western honey bees are often described as essential to human food production, leading to claims that without their pollination humanity would starve or die out.[39][40] Apples, blueberries and cherries, for example, are 90 percent dependent on honeybee pollination.[41] Albert Einstein is sometimes misquoted as saying "If bees disappeared off the face of the earth, man would only have four years left to live".[42] Einstein did not say this and there is no science to support this prediction.[43]
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