Age Polyethism
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Polietismo e expectativa de vida em operárias de Atta laevigata / Polyethism and lifespan in Atta laevigata workers
Age polyethism is the change in activities carried out by members of a colony during its life. Older individuals have lower future value to the colony, so it would be better for the colony if they could perform more dangerous tasks outside the nest and not return to its interior. Thus, the risk of bringing pathogens into the colony is reduced, protecting int
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/02/2010
-
2. Age polyethism in Plebeia emerina (Friese) (Hymenoptera: Apidae) colonies related to propolis handling
Stingless bees collect plant resins and make it into propolis, although they have a wider range of use for this material than do honey bees (Apis spp.). Plebeia spp. workers employ propolis mixed with wax (cerumen) for constructing and sealing nest structures, while they use viscous (sticky) propolis for defense by applying it onto their enemies. Isolated vi
Neotropical Entomology. Publicado em: 2010-10
-
3. Morphological and glandular changes associated th the age polyethism of Polybia paulista (Hymenoptera: Vespidae) / Mudanças morfológicas e glandulares associadas ao polietismo etário em Polybia paulista (Hymenoptera: Vespidae)
The division of labor is a central theme in the study of social insects. In bees and wasps this ability is regulated for age castes of the workers. In Apis mellifera, several authors have shown selective activation of the glands for job in colony, and reduced body weight for foraging. In social wasps age polyethism among workers is a relatively unexplored su
Publicado em: 2010
-
4. Common endocrine and genetic mechanisms of behavioral development in male and worker honey bees and the evolution of division of labor.
Temporal polyethism is a highly derived form of behavioral development displayed by social insects. Hormonal and genetic mechanisms regulating temporal polyethism in worker honey bees have been identified, but the evolution of these mechanisms is not well understood. We performed three experiments with male honey bees (drones) to investigate how mechanisms r
-
5. Juvenile hormone, reproduction, and worker behavior in the neotropical social wasp Polistes canadensis
Previous studies of the division of labor in colonies of eusocial Hymenoptera (wasps and bees) have led to two hypotheses regarding the evolution of juvenile hormone (JH) involvement. The novel- or single-function hypothesis proposes that the role of JH has changed from an exclusively reproductive function in primitively eusocial species (those lacking morph
National Academy of Sciences.