Results 61 to 70 of about 137 (128)
Removal of Nonmyrmecochorous Seeds by Ants: Role of Ants in Cattle Grasslands
Psyche: A Journal of Entomology, 2012 Livestock production models prevailing in Colombian Andes are simplified treeless pastures for extensive ranching, with the consequent reduction of environmental services, such as seed dispersal, due to lack of primary dispersers, scarcity of adequate ...
Selene Escobar-Ramírez +4 more
doaj +1 more source
Viral diversity and co‐evolutionary dynamics across the ant phylogeny
Molecular Ecology, Volume 33, Issue 19, October 2024.Abstract Knowledge of viral biodiversity within insects, particularly within ants, is extremely limited with only a few environmental viruses from invasive ant species identified to date. This study documents and explores the viral communities in ants.
Peter J. Flynn, Corrie S. Moreau
wiley +1 more source
Leafcutter ants enhance microbial drought resilience in tropical forest soil
Environmental Microbiology Reports, Volume 16, Issue 3, June 2024.We carried out an eight‐month investigation on a tropical soil microbial community in the aftermath of a severe drought event, which resulted in changes to soil moisture levels and methane emissions. Our study reveals that the leafcutter ant, Atta cephalotes, plays a crucial role in stabilizing the microbial community and enhancing its resilience by ...
Hannah B. Shulman +6 more
wiley +1 more source
Ecology and Evolution, Volume 14, Issue 4, April 2024.Atta vollenweideri leaf‐cutter ant workers vary continously in size across more than two orders of magnitude in body mass. We investigated whether size‐variation correlates with shape variation by analysing the 3D morphology of mandibles and head capsules.
Natalie Imirzian +3 more
wiley +1 more source
SociobiologyThe ability to recognize nestmates is critical to the ecological success of social insects. Fungus-farming “attine” ants (Formicidae: Myrmicinae: Attini: Attina) can recognize their nestmates and symbiotic fungi via chemoreception.
Diego Santana Assis +4 more
doaj +1 more source
Body size effects on locomotion and load carriage in the highly polymorphic leaf-cutting ants Atta colombica and Atta cephalotes [PDF]
Behavioral Ecology, 2000 Leaf-cutting ants reduce their walking speed under the weight of the leaf fragments they carry, an effect likely to have some consequence for the foraging performance of a colony. I manipulated loads carried by workers from two Atta species to determine how load mass and body size affect walking speed.
openaire +1 more source
Immune response and survival of a leafcutter ant with a compromised immune system during an entomopathogenic challenge [PDF]
Journal of Hymenoptera ResearchSocial insects employ diverse strategies, including individual and collective sanitary care as well as colony-level hygiene, to prevent, manage and control pathogen transmission.
Ernesto Bonadies +2 more
doaj +3 more sources
How urbanite is the leaf-cutter ant Atta cephalotes (Hymenoptera: Myrmicinae) in Colombia?
, 2023 Abstract Many studies have dealt with the effect of invasive species in urban environments, leading to decline in species richness, and changes in the composition of faunal communities. However, few studies have investigated the role of native species while turning into invasive pests.
James Montoya Lerma +2 more
openaire +1 more source
Acta Amazonica, 2012 Este estudo investigou o papel das saúvas na recuperação da vegetação pós-fogo. Foi hipotetizado que a perturbação do fogo aumenta a abundância de ninhos de saúva (1) e as atividades de remoção de sementes (2) e desfolha (3), especialmente no ambiente de
Karine Santana Carvalho +2 more
doaj +1 more source
Neuropeptides specify and reprogram division of labor in the leafcutter ant Atta cephalotes
ABSTRACT Social insects offer powerful models to investigate the mechanistic foundation of elaborate individual behaviors comprising a cooperative community. Workers of the leafcutter ant genus Atta provide an extreme example of behavioral segregation among many phenotypically ...
Michael B. Gilbert +18 more
openaire +2 more sources