Results 11 to 20 of about 2,531 (177)

Isolation and characterization of actinobacteria ectosymbionts from Acromyrmex subterraneus brunneus (Hymenoptera, Formicidae)

Microbiological Research, 2011
The ectosymbiont actinobacterium Pseudonocardia was isolated from the integument of Acromyrmex leaf-cutter ants and seems to play a crucial role in maintaining asepsis of the nest. Currently, there has been an intensive search for Pseudonocardia associated with several attine species, but few studies have indicated that other actinobacteria may be ...
Aline S Guidolin, Fernando Luis Cônsoli
exaly   +4 more sources

Occurrence of polygyny in Acromyrmex subterraneus molestans Santschi 1925 (Hymenoptera: Formicidae) [PDF]

Ciência Rural, 2004
Polygyny denotes the coexistence of two or more mated and fertile queens in the colony. A colony of Acromyrmex subterraneus molestans Santschi containing 14 queens was collected on campus of the Universidade Federal de Viçosa, Brazil, aiming to verify if
Danival José de Souza, José Lino Neto, Terezinha M. C. Della Lucia, Ethel Peternelli   +3 more
doaj   +12 more sources

Characterization of Acromyrmex subterraneus brunneus (Hymenoptera: Formicidae) young nests in a fragment of the Neotropical Forest Caracterização de ninhos jovens de Acromyrmex subterraneus brunneus (Hymenoptera: Formicidae) em fragmento de Floresta Neotropical [PDF]

Revista Árvore, 2004
Young nests of Acromyrmex subterraneus brunneus are characterized by refuse soil in the exterior of the nest, a single fungus chamber 11 to 20 cm deep in relation to soil surface and internal volume ranging from 0.3 to 1.5 liters.
Roberto da Silva Camargo, Luiz Carlos Forti, Juliane Floriano Lopes, Ana Paula Protti de Andrade   +3 more
doaj   +4 more sources

Cytogenetic data on six leafcutter ants of the genus Acromyrmex Mayr, 1865 (Hymenoptera, Formicidae, Myrmicinae): insights into chromosome evolution and taxonomic implications. [PDF]

Comp Cytogenet, 2016
Cytogenetic data for the genus Acromyrmex Mayr, 1865 are available, to date, for a few species from Brazil and Uruguay, which have uniform chromosome numbers (2n = 38).
Barros LA, de Aguiar HJ, Mariano Cdos S, Andrade-Souza V, Costa MA, Delabie JH, Pompolo Sd.   +6 more
europepmc   +4 more sources

Spatio-temporal learning in a mass-recruiting leaf-cutting ant (Acromyrmex subterraneus)

bioRxiv
The ability to anticipate periodically available resources is observed in several animals and improves performance in obtaining resources and adaptability. Spatio-temporal learning occurs when they associate the correct time and location of future events.
Fernanda Tiemi Nakashima Ferreira, P. B. Constantino, Marcelo Arruda Fiuza de Toledo, André Frazão Helene   +3 more
semanticscholar   +2 more sources

Differential response of fire on the community dynamics of five insect taxa in a tropical mountaintop forest archipelago. [PDF]

Ecol Evol, 2023
Fire incidence influences changes in species composition over time (temporal β‐diversity) in less vagile insect groups (ants and dung beetles). Species turnover is the primary component of temporal β‐diversity driving the interannual variation of all insect taxa examined in this study.
Kuchenbecker J, Camarota F, da Silva PG, Perillo LN, do Vale Beirão M, de Castro FS, Fernandes GW, do Espírito-Santo MM, Santos NC, Cardoso IGS, Neves FS.   +10 more
europepmc   +2 more sources

Shifts in Chromosome Evolution Rates Shape the Karyotype Patterns of Leafcutting Ants. [PDF]

Ecol Evol
Modern phylogenetic methods were used to explore how chromosome number and other karyotypic traits vary across species. The focus was on testing whether karyotypic traits follow a Brownian motion model (indicating neutral changes) or are influenced by phylogenetic constraints.This research elucidates the mechanisms underlying chromosomal evolution and ...
Cardoso DC, Cristiano MP.
europepmc   +2 more sources

Ectosymbionts and immunity in the leaf-cutting ant Acromyrmex subterraneus subterraneus

Brain, Behavior, and Immunity, 2013
Associations with symbiotic organisms can serve as a strategy for social insects to resist pathogens. Antibiotics produced by attine ectosymbionts (Actinobacteria) suppress the growth of Escovopsis spp., the specialized parasite of attine fungus gardens.
D. J. Souza, A. Lenoir, M. Kasuya, M. M. R. Ribeiro, S. Devers, J. C. Couceiro, T. D. Lucia   +6 more
semanticscholar   +3 more sources

Colonial recognition of fungus in the fungus-growing ant Acromyrmex subterraneus subterraneus (Hymenoptera: Formicidae)

Chemoecology, 2001
Summary. Leaf cutting ants live in symbiosis with a basidiomycete fungus that is exploited as a source of nutrients for the ant larvae. Tests of fungus transport demonstrated that Acromyrmex subterraneus subterraneus workers discriminate concolonial fungus from alien fungus, and rejected the latter.
A. C. M. Viana, Anne Frézard, C. Malosse, T. M. D. Della Lucia, C. Errard, A. Lenoir   +5 more
semanticscholar   +3 more sources

The Biology of Szelenyiopria talitae (Hymenoptera: Diapriidae): Larval Parasitoid of the Leaf-Cutting Ant Acromyrmex subterraneus (Hymenoptera: Formicidae)

Advances in Entomology, 2021
The biology of a koinobiont parasitoid of leaf-cutting ant larvae, Szelenyiopria talitae (Hymenoptera: Diapriidae), was studied from naturally infested Acromyrmex subterraneus (Hymenoptera: Formicidae) nests. Nests were collected in the field from the
T. C. Mattoso, Denise Dolores Oliveira Moreira, T. Teodoro, Claudio Luiz Melo Souza, Rita de Kássia Guarnier da Silva, V. Morais, Carlos P. Silva, M. Erthal, R. Samuels   +8 more
semanticscholar   +1 more source