A queen ant (formally known as a gyne) is an adult, reproducing female ant in an ant colony; she is usually the mother of all the other ants in that colony. Some female ants, such as the Cataglyphis , do not need to mate to produce offspring, reproducing through asexual parthenogenesis or cloning, and all of those offspring will be female. [1] Others, like those in the genus Crematogaster , mate in a nuptial flight. Queen offspring ants among most species develop from larvae specially fed in order to become sexually mature.
Depending on the species, there can be either a single mother queen, or potentially hundreds of fertile queens. [2] Not every colony of ants has a queen. Some colonies have multiple queens.
Queen ants are the only members of a colony to lay eggs. After mating, they can produce thousands, sometimes millions, of eggs during their lifetime. A queen of Lasius niger was held in captivity by German entomologist Hermann Appel for 283⁄4 years; also a Pogonomyrmex owyheei has maximum estimated longevity of 30 years in the field. [2]
Ants go through four stages of development: egg, larva, pupa (sometimes cocoon, called metamorphosis depending on the species) and adult. [3] The larvae have no legs but are capable of some minor movement, such as bending their head toward a food source when fed. During this stage, the level of care and nourishment the larvae receive determines their eventual adult form. When resources are low, all larvae will develop into female worker ants; [4] however, if the parent of a sexually reproducing colony has a plentiful supply of food, some of the larvae will receive better nourishment than others, and develop into winged, sexually mature female ants destined to leave the colony. At this stage, the winged female ants are sometimes known as "princess ants". [5]
When conditions are hot and humid after rain and there is minimal wind, masses of winged sexually reproducing ants or "flying ants" will leave their parent nest and take flight. [6] The mating flights occur simultaneously in all ant nests of the particular species. The female "queen" ants will fly a long distance, during which they will mate with at least one winged male from another nest. He transfers sperm to the seminal receptacle of the queen and then dies. Once mated, the "queen" will attempt to find a suitable area to start a colony and, once found, will detach her wings. [7]
Once a colony is established, the worker ants meet the queen's needs such as giving her food and disposing of her waste. Because ant social structure is very complex and individual ants are relatively simple, an ant colony can be thought of as a single organism, and the individual ants as cells or limbs of the organism, as the individuals can rarely survive on their own. In a colony, some ants may be unrelated to the queen(s), such as when a brood is captured in a raid and raised as the colony's own.
Once the colony has established itself, the queen ant will lay eggs continuously. Among species that reproduce sexually, the queen selectively uses the sperm cells retained from the nuptial flight, laying fertilized or unfertilized eggs depending upon the cyclic needs of the colony; [8] the sex of each individual ant is determined by whether or not the egg is fertilized. The fertilized eggs become female worker ants and unfertilized eggs develop as males; if the fertilized eggs and pupae are well-nurtured, they potentially become queens.
This system of sex determination, haplodiploidy, is generally true for all Hymenoptera – ants, bees, and wasps. However, a few ant species do not reproduce sexually, and members of these clonal colonies are all female.
The patterns of expression of genes involved in repair of DNA damage or protein damage were compared between age-matched queens and workers of the ant Lasius niger. [9] The expression of these genes increased with age, and at age two months this increase, in both the legs and brain, was significantly greater in queens than in workers. This difference in repair gene expression between queens and workers suggests that the greater longevity of L. niger queens is due, in part, to increased investment in DNA and protein repair.
Formica exsecta is a species of ant found from Western Europe to Asia.
The honey bee life cycle, here referring exclusively to the domesticated Western honey bee, depends greatly on their social structure.
A queen bee is typically an adult, mated female (gyne) that lives in a colony or hive of honey bees. With fully developed reproductive organs, the queen is usually the mother of most, if not all, of the bees in the beehive. Queens are developed from larvae selected by worker bees and specially fed in order to become sexually mature. There is normally only one adult, mated queen in a hive, in which case the bees will usually follow and fiercely protect her.
Polygynandry is a mating system in which both males and females have multiple mating partners during a breeding season. In sexually reproducing diploid animals, different mating strategies are employed by males and females, because the cost of gamete production is lower for males than it is for females. The different mating tactics employed by males and females are thought to be the outcome of stochastic reproductive conflicts both ecologically and socially.
The black garden ant, also known as the common black ant, is a formicine ant, the type species of the subgenus Lasius, which is found across Europe and in some parts of North America, South America, Asia and Australasia. The European species was split into two species; L. niger, which are found in open areas; and L. platythorax, which is found in forest habitats. It is monogynous, meaning colonies contain a single queen.
A drone is a male bee. Unlike the female worker bee, a drone has no stinger. He does not gather nectar or pollen and cannot feed without assistance from worker bees. His only role is to mate with a maiden queen in nuptial flight.
An ant colony is a population of ants, typically from a single species, capable of maintaining their complete lifecycle. Ant colonies are eusocial, communal, and efficiently organized and are very much like those found in other social Hymenoptera, though the various groups of these developed sociality independently through convergent evolution. The typical colony consists of one or more egg-laying queens, numerous sterile females and, seasonally, many winged sexual males and females. In order to establish new colonies, ants undertake flights that occur at species-characteristic times of the day. Swarms of the winged sexuals depart the nest in search of other nests. The males die shortly thereafter, along with most of the females. A small percentage of the females survive to initiate new nests.
Dorylus, also known as driver ants, safari ants, or siafu, is a large genus of army ants found primarily in central and east Africa, although the range also extends to southern Africa and tropical Asia. The term siafu is a loanword from Swahili, and is one of numerous similar words from regional Bantu languages used by indigenous peoples to describe various species of these ants. Unlike the New World members of the former subfamily Ecitoninae, members of this genus form temporary subterranean bivouacs in underground cavities which they excavate and inhabit - either for a few days or up to three months. Also, unlike some New World army ants, driver ants are not specialized predators of other species of ant, instead being more generalistic with a diet consisting of a diversity of arthropods. Their colonies are enormous compared to other ant species, and can contain over 20 million individuals. As with their American counterparts, workers exhibit caste polymorphism with the soldiers having particularly large heads that power their scissor-like mandibles. They are capable of stinging, but very rarely do so, relying instead on their powerful shearing jaws. A large part of their diet consists of earthworms. Driver ant queens are the largest living ants known, with the largest measuring between 40 - 63 millimeters in total body length depending on their physiological condition.
The name army ant (or legionary ant or marabunta) is applied to over 200 ant species in different lineages. Because of their aggressive predatory foraging groups, known as "raids", a huge number of ants forage simultaneously over a limited area.
Atta sexdens is a species of leafcutter ant belonging to the tribe Attini, native to America, from the southern United States (Texas) to northern Argentina. They are absent from Chile. They cut leaves to provide a substrate for the fungus farms which are their principal source of food. Their societies are among the most complex found in social insects. A. sexdens is an ecologically important species, but also an agricultural pest. Other Atta species, such as Atta texana, Atta cephalotes and others, have similar behavior and ecology.
Haplodiploidy is a sex-determination system in which males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid. Haplodiploidy is sometimes called arrhenotoky.
Bombus ternarius, commonly known as the orange-belted bumblebee or tricolored bumblebee, is a yellow, orange and black bumblebee. It is a ground-nesting social insect whose colony cycle lasts only one season, common throughout the northeastern United States and much of Canada. The orange-belted bumblebee forages on Rubus, goldenrods, Vaccinium, and milkweeds found throughout the colony's range. Like many other members of the genus, Bombus ternarius exhibits complex social structure with a reproductive queen caste and a multitude of sister workers with labor such as foraging, nursing, and nest maintenance divided among the subordinates.
Nuptial flight is an important phase in the reproduction of most ant, termite, and some bee species. It is also observed in some fly species, such as Rhamphomyia longicauda.
Harpagoxenus sublaevis is a species of ant in the subfamily Myrmicinae. It is found in Austria, France, Germany, Italy, and Switzerland.
The western honey bee or European honey bee is the most common of the 7–12 species of honey bees worldwide. The genus name Apis is Latin for 'bee', and mellifera is the Latin for 'honey-bearing' or 'honey-carrying', referring to the species' production of honey.
Polistes metricus is a wasp native to North America. In the United States, it ranges throughout the southern Midwest, the South, and as far northeast as New York, but has recently been spotted in southwest Ontario. A single female specimen has also been reported from Dryden, Maine. P. metricus is dark colored, with yellow tarsi and black tibia. Nests of P. metricus can be found attached to the sides of buildings, trees, and shrubbery.
Lasius fuliginosus, also known as the jet ant or jet black ant, is a species of ant in the subfamily Formicinae.
Worker policing is a behavior seen in colonies of social hymenopterans whereby worker females eat or remove eggs that have been laid by other workers rather than those laid by a queen. Worker policing ensures that the offspring of the queen will predominate in the group. In certain species of bees, ants and wasps, workers or the queen may also act aggressively towards fertile workers. Worker policing has been suggested as a form of coercion to promote the evolution of altruistic behavior in eusocial insect societies.
Scaptotrigona postica is a species of stingless bee that lives mainly in Brazil. It is a eusocial bee in the tribe Meliponini. S. postica is one of 25 species in the genus Scaptotrigona and is a critical pollinator of the tropical rain forests of Brazil. They construct their nests in hollowed sections of tree trunks, allowing for effective guarding at the nest entrance. This species shows colony structure similar to most members of the Meliponini tribe with three roles within the colony: queen, worker, and male. S. postica individuals have different forms of communication from cuticular hydrocarbons to pheromones and scent trails. Communication is especially useful during worker foraging for nectar and pollen through the Brazilian tropical rain forests. S. postica is a very important pollinator of the Brazilian tropical rain forests and is widely appreciated for its honey. Stingless bees account for approximately 30% of all pollination of the Brazilian Caatinga and Pantanal ecosystems and up to 90% of the pollination for many species of the Brazilian Atlantic Forest and the Amazon.
The social networks of colonies of social insects have been extensively studied as model biological networks.