Results 91 to 100 of about 137 (128)

Behavioral performance and division of labor influence brain mosaicism in the leafcutter ant Atta cephalotes

Journal of Comparative Physiology A, 2022
Brain evolution is hypothesized to be driven by behavioral selection on neuroarchitecture. We developed a novel metric of relative neuroanatomical investments involved in performing tasks varying in sensorimotor and processing demands across polymorphic task-specialized workers of the leafcutter ant Atta cephalotes and quantified brain size and ...
I. B. Muratore, E. M. Fandozzi, J. F. A. Traniello   +2 more
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An integumentary pheromone-secreting gland in Atta sp: Territorial marking with a colonyspecific pheromone in Atta cephalotes

Journal of Insect Physiology, 1979
Abstract Workers of Atta cephalotes mark the area around their nest with a pheromone that has at least two components, one of which is colony-specific. Another, which was isolated and tested for its activity, is genus- or species-specific in its action; it appears to be similar in A. sexdens and A.
K. Jaffé, M. Bazire-Benazét, P.E. Howse   +2 more
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A novel autostimulatory pheromone regulating transport of leaves in Atta cephalotes

Animal Behaviour, 1986
Abstract Workers of the leaf-cutting ant Atta cephalotes mark freshly cut and stored leaves with an abdominal secretion, prior to transport. Such leaves are more readily picked up than unmarked leaves. This effect, and subsequent marking, can be experimentally induced by an extract of Dufour's gland, which contains a number of straight-chain ...
J.W.S. Bradshaw, P.E. Howse, R. Baker
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Nest area exploration and recognition in leafcutter ants (Atta cephalotes)

Journal of Insect Physiology, 1986
Abstract Workers of Atta cephalotes deposit “nest exit pheromones” in the vicinity of their nest entrances. Lasting for a period of at least 24 h, these substances orient the workers to the nest openings and increase the rate of trail laying, leaf cutting, and leaf retrieval.
Bert Hölldobler, Edward O. Wilson
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Neuropeptides specify and reprogram division of labor in the leafcutter ant Atta cephalotes

Cell
Social insects offer powerful models to investigate mechanisms of elaborate individual behaviors comprising a cooperative community. Workers of the leafcutter ant genus Atta are extreme examples of behavioral segregation among phenotypically distinct worker types.
Michael B, Gilbert, Karl M, Glastad, Maxxum, Fioriti, Matan, Sorek, Tierney, Scarpa, Freddy S, Purnell, Daniel, Xu, Lindsay K, Pino, Anatoly, Korotkov, Ali, Biashad, Josue, Baeza, Richard, Lauman, Anastasiia, Filippova, Balint Z, Kacsoh, Roberto, Bonasio, Mackenzie W, Mathis, Benjamin A, Garcia, Andrei, Seluanov, Vera, Gorbunova, Shelley L, Berger   +19 more
exaly   +3 more sources

Allometry and the geometry of leaf-cutting in Atta cephalotes

Behavioral Ecology and Sociobiology, 1991
This study considers the relationship of both leg length and the geometry of leaf-cutting to load-size determination by the highly polymorphic leaf-cutting ant Atta cephalotes. A. cephalotes workers anchor on the leaf edge by their hind legs and pivot around them while cutting arcs from leaves.
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Atta cephalotes . [Distribution map].

Distribution Maps of Plant Pests, 2005
Abstract A new distribution map is provided for Atta cephalotes (L.) (Hymenoptera, Formicidae) (Leaf-cutting Ant). Host Plants: Cacao, citrus, coffee, cotton, maize. Information is given on the geographical distribution in NORTH AMERICA, Mexico, CENTRAL AMERICA and WEST INDIES, Belize, Costa Rica ...
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The mass recruitment system of the leaf cutting ant, Atta cephalotes (L.)

Animal Behaviour, 1979
Abstract The recruitment system of Atta cephalotes workers was studied in the laboratory. The number of ants recruited to a food source depends on the quality of the food and on the duration of starvation of the colony, and is related to the concentration of trail pheromone on the trail but not to the number of ants initially returning to the nest ...
K. Jaffe, P.E. Howse
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Selective fern herbivory by leaf-cutter ants of Atta cephalotes (L.) in Brazil

Brazilian Journal of Botany, 2018
Although leaf-cutter ants of the genus Atta are polyphagous, they discriminate between food plant species. Ferns represent the second largest group of vascular plants and are especially abundant in tropical forest understories, but seem to be avoided as food plants.
Rafael de Paiva Farias, Lucas Erickson Nascimento da Costa, Iva Carneiro Leão Barros, Antônio Fernando Morais de Oliveira, Klaus Mehltreter   +4 more
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Microfungi in the fungus gardens of the leaf-cutting ant Atta cephalotes: a preliminary study

Mycological Research, 1996
Eighteen taxa and a number of sterile mycelia and yeasts were isolated from three fungus gardens of Atta cephalotes of which most reflected the endophytic and epiphytic fungal biota of the leaves of their food plants. The colonization frequency by Leucoagaricus gongylophorus varied from 72 to 95% depending on the food plants available to the ants and ...
P.J. Fisher, D.J. Stradling, B.C. Sutton, L.E. Petrini   +3 more
openaire   +1 more source