Results 51 to 60 of about 137 (128)

Forager size of the leaf-cutting ant Atta sexdens (Hymenoptera: Formicidae) in a mature eucalyptus forest in Brazil

open access: yesRevista de Biología Tropical, 2000
We determined the size characteristics of foragers of the leaf-cutting ant Atta sexdens in a mature eucalyptus forest in Campos dos Goytacazes, Rio de Janeiro State, Brazil, at daytime (7: 30 to 10: 00 hr) and nighttime (19: 00 to 23: 00 hr).
Athayde Tonhasca   +1 more
doaj  

Atta cephalotes L.

open access: yes, 1905
Published as part of Forel, A., 1905, Miscellanea myrmicologiques, II (1905)., pp.
openaire   +3 more sources

Phylogenomic approach to integrative taxonomy resolves a century‐old taxonomic puzzle and the evolutionary history of the Acromyrmex octospinosus species complex

open access: yesSystematic Entomology, Volume 50, Issue 3, Page 469-494, July 2025.
A comprehensive, integrative study approach combining morphology, population genetics, phylogenetics and biogeography revealed that the Acromyrmex octospinosus species complex consists of two species: A. octospinosus and its social parasite A. insinuator.
Daniela Mera‐Rodríguez   +2 more
wiley   +1 more source

The Evolutionary Innovation of Nutritional Symbioses in Leaf-Cutter Ants

open access: yesInsects, 2012
Fungus-growing ants gain access to nutrients stored in plant biomass through their association with a mutualistic fungus they grow for food. This 50 million-year-old obligate mutualism likely facilitated some of these species becoming dominant ...
Frank O. Aylward   +2 more
doaj   +1 more source

Hymenopteran‐specific TRPA channel from the Texas leaf cutter ant (Atta texana) is heat and cold activated and expression correlates with environmental temperature

open access: yesInsect Science, Volume 32, Issue 1, Page 301-320, February 2025.
Texas leaf cutter ant (Atta texana) populations have expanded northward and their obligate symbiotic fungus has increased cold tolerance. The ants have exquisitely temperature sensitive antennae; here, we find the antennae express a subset of six transient receptor potential (TRP) channels, including HsTRPA.
Julia M. York   +4 more
wiley   +1 more source

Bimodal alarm signals modulate responses to monomodal alarm signals in Camponotus modoc carpenter ants

open access: yesInsect Science, Volume 32, Issue 1, Page 343-355, February 2025.
Distressed Camponotus modoc carpenter ants emit alarm pheromone and produce vibratory alarm signals. Presented as a monomodal signal, the pheromone attracts nestmates, whereas vibratory signals cause nestmates to “freeze” or to run fast. Sensing a bimodal signal complex, nestmates are less attracted to pheromone but stay “frozen” longer which seems ...
Asim Renyard, Gerhard Gries
wiley   +1 more source

Common ant species dominate morphospace: unraveling the morphological diversity in the Brazilian Amazon Basin

open access: yesEcography, Volume 2024, Issue 11, November 2024.
Rare plant and vertebrate species have been documented to contribute disproportionately to the total morphological structure of species assemblages. These species often possess morphologically extreme traits and occupy the boundaries of morphological space.
Joudellys Andrade‐Silva   +7 more
wiley   +1 more source

Metarhizium anisopliae y Trichoderma viride controlan colonias de Atta cephalotes en campo mejor que un insecticida químico

open access: yesRevista Colombiana de Biotecnología, 2002
Las hormigas cortadoras de hojas Atta cephalotes son una plaga economicamente importante en la agricultura. Estas hormigas utilizan el material cortado para cultivar un hongo del cual se alimentan.
Elkin López Arismendy   +1 more
doaj   +2 more sources

Los estados inmaduros de Coelosis biloba (Coleoptera: Melolonthidae: Dynastinae) y notas sobre su biología Immature stages of Coelosis biloba (Coleoptera: Melolonthidae: Dynastinae) with notes on their biology

open access: yesRevista Mexicana de Biodiversidad, 2006
Se describen la larva de tercer estadio y las pupas de macho y hembra de Coelosis biloba (Linné 1767) con ejemplares recolectados en Colombia (Cauca y Valle) y en México (Veracruz) asociados con los hormigueros de Atta cephalotes (Linné 1750).
Luis Carlos Pardo-Locarno   +2 more
doaj  

DNA methylase 1 influences temperature responses and development in the invasive pest Tuta absoluta

open access: yesInsect Molecular Biology, Volume 33, Issue 5, Page 503-515, October 2024.
Dnmt1 regulates the adaptability of tomato leaf miner to temperature. TaDnmt1 RNAi impacts the larval growth and development, resulting in a significant increase (57%) in larval mortality and decrease in pupation (49.3%) and pluming (50.9%). The rapid geographic expansion of Tuta absoluta infestation is closely associated with TaDnmt1‐mediated ...
Yanhong Tang   +13 more
wiley   +1 more source

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