Results 31 to 40 of about 2,626 (204)

Mechanical demands of bite in plane head shapes of ant (Hymenoptera: Formicidae) workers

Ecology and Evolution, Volume 13, Issue 6, June 2023., 2023
To assess the role of head shape in stress patterns of Pheidole workers, we solve a set of finite element analyses while exploring variation in Pheidole worker head morphospace. Our results demonstrate that head shapes of majors show signs of optimization to deal with stronger bites given that stresses dissipate more evenly along the head than in ...
Cristian L. Klunk, Marco A. Argenta, Alexandre Casadei‐Ferreira, Marcio R. Pie   +3 more
wiley   +1 more source

Percepciones y conflictos humano-fauna en zona de amortiguamiento del Parque Internacional La Amistad, Costa Rica

Cuadernos de investigación UNED, 2021
Introducción: Actualmente, muchos animales salen de las áreas silvestres protegidas en busca de recursos, sufriendo conflictos con las personas de áreas cercanas.
Marco Osorto-Nuñez, María Fernanda Flores, María Camila Perez-Guevara, Rebeca Coto-Sánchez, Carlos Espinoza-Marín, Emilia Perucca, Estefanía Rosero, Gabriel Vides-Hernández, Juan Esteves, Alejandra Aranda   +9 more
doaj   +1 more source

Large deformation diffeomorphic mapping of 3D shape variation reveals two distinct mandible and head capsule morphs in Atta vollenweideri leaf-cutter worker ants. [PDF]

Ecol Evol
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.
Imirzian N, Püffel F, Roces F, Labonte D.   +3 more
europepmc   +2 more sources

Chemoreceptor Evolution in Hymenoptera and Its Implications for the Evolution of Eusociality. [PDF]

, 2015
Eusocial insects, mostly Hymenoptera, have evolved unique colonial lifestyles that rely on the perception of social context mainly through pheromones, and chemoreceptors are hypothesized to have played important adaptive roles in the evolution of ...
Berger, Shelley L, Liebig, Jürgen, Ray, Anandasankar, Rokas, Antonis, Zhou, Xiaofan, Zwiebel, Laurence J   +5 more
core   +2 more sources

Edible insects: Tendency or necessity (a review)

eFood, Volume 4, Issue 1, February 2023., 2023
Edible insects represent an innovative food protein and bioactive compounds source with many advantages that will help the problem of rapid growth of the world population Abstract Eating insects has been a widespread habit in many cultures for many years. Edible insects represent an innovative food source with many advantages that will help the problem
Konstantina Papastavropoulou, Jianbo Xiao, Charalampos Proestos   +2 more
wiley   +1 more source

Effects of climate change on plant resource allocation and herbivore interactions in a Neotropical rainforest shrub

Ecology and Evolution, Volume 12, Issue 8, August 2022., 2022
Climate change could impact plant–herbivore systems directly by altering species traits or abundances or indirectly by altering the strength and direction of the relationships that govern organismal strategies and interactions. It appears that, in this Neotropical system, increased CO2 concentration and temperature may cause indirect, cascading ...
Lauren D. Maynard, Elodie Moureau, Maaike Y. Bader, Diego Salazar, Gerhard Zotz, Susan R. Whitehead   +5 more
wiley   +1 more source

Spatio-temporal permanence and plasticity of foraging trails in young and mature leaf-cutting ant colonies (Atta spp.) [PDF]

, 2005
The distribution and formation of foraging trails have largely been neglected as factors explaining harvesting patterns of leaf-cutting ants.We applied fractal analysis, circular, and conventional statistics to published and newly recorded trailmaps of ...
Amthor, A. M., Bastin, B., Bazin, D., Blank, B., Cacéres, L., Chbihi, A., Delaune, O., Farget, F., Fernández-Dominguez, B., Grévy, S., Kamalou, O., Lukyanov, S. M., Mittig, W., Morrissey, D. J., Pereira, J., Perrot, L., Saint-Laurent, M. -G., Savajols, H., Sherrill, B. M., Stodel, C., Tarasov, O. B., Thomas, J. C., Villari, A. C.   +22 more
core   +4 more sources

Forager Polymorphism and Foraging Ecology in the Leaf-Cutting Ant, Atta colombica

Psyche: A Journal of Entomology, 1995
I compare forager size and foraging selectivity of the leaf-cutting ant Atta colombica and that of its close relative Atta cephalotes. In both species, larger foragers cut fragments of greater mass and area, and at vegetation sources of greater specific ...
James K. Wetterer
doaj   +1 more source

Adoption of a surrogate artificial queen in a colony of Atta cephalotes (L.) (Hymenoptera: Formicidae) in Colombia

Sociobiology, 2015
In nature, Atta cephalotes (L.) is a monogynous species. Each colony has a single, permanent queen fed and protected by thousands of sterile workers. At death the queen colony practically disappears.
Guillermo Sotelo, Diana Sofía Ortiz Giraldo, Jonathan Rodríguez, James Montoya Lerma   +3 more
doaj   +1 more source

Biocontrol of leucoagaricus gongylophorus of leaf-cutting ants with the mycoparasitic agent trichoderma koningiopsis [PDF]

, 2016
Leaf-cutting ants are one of the main agricultural and agroforestry pests in the Neotropic region. The essential food source of these ants is Leucoagaricus gongylophorus.
Bich, Gustavo Angel, Castrillo, María Lorena, Villalba, Laura, Zapata, Pedro Dario   +3 more
core   +1 more source