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Colonies of army ants are large compared to the colonies of other Formicidae. Colonies can have over 15 million workers and can transport 3000 prey (items) per hour during the raid period. [14] [20] When army ants forage, the trails that are formed can be over 20 m (66 ft) wide and over 100 m (330 ft) long. [20]
Eciton burchellii is a species of New World army ant in the genus Eciton. This species performs expansive, organized swarm raids that give it the informal name, Eciton army ant. [2] This species displays a high degree of worker polymorphism. Sterile workers are of four discrete size-castes: minors, medias, porters (sub-majors), and soldiers ...
Army ant bivouac. A bivouac is an organic structure formed by migratory driver ant and army ant colonies, such as the species Eciton burchellii. A nest is constructed out of the living ant workers' own bodies to protect the queen and larvae, and is later deconstructed as the ants move on. [1] [2]
D. laevigatus colonies are fairly small for army ant colonies, ranging from 30,000 to 1,000,000 individuals. Because the colonies prefer long-term food exploitation and stable column foraging systems to massive raids, there is little pressure for the colonies to expand and support the massive numbers of individuals common in surface-hunting ...
Colonies of real army ants have only one queen, so when she dies, the workers may try to join another colony, or the rest of the colony also dies; Carebara colonies can have many (up to 16) queens. Carebara species perform a nuptial flight; real army-ant queens have no wings (queens and workers of the Dorylus species are even blind) and mate on ...
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. [1]
Driver ant queens exhibit polyandry; young queens from some species with large colony sizes must mate with 10–20 males before they have gathered enough sperm for their reproductive lives. [9] Once the queen is ready, roughly half of the workers in the colony will leave with her to found a new colony. [ 10 ]
Not all ants follow the basic pattern described above. In army ants only males are alates, having wings. They fly out from their parent colony in search of other colonies where wingless virgin queens wait for them. A colony with an old queen and one or more mated young queens then divides, each successful queen taking a share of the workers.