Division Of Castes
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. 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
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2. DIVISÃO DE TRABALHO, POLIETISMO TEMPORAL E ASPECTOS DA ATIVIDADE FORRAGEADORA DE Mischocyttarus consimilis Zikán, 1949 (HYMENOPTERA: VESPIDAE)
The objective of this work was to study the castes division of labor in Mischocyttarus consimilis. For elaboration of the behavioral repertoire the observations were accomplished in 21 colonies in natural conditions with 20 hours of qualitative observations and 80 hours of quantitative observations. Thirty behavior acts were identified, of which 23 were exec
Publicado em: 2009
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3. Determinação das castas em Scaptotrigona postica (Latreille) (Hymenoptera, Apidae, Meliponini): diferenciação do ovário
Both castes of Scaptotrigolia postica (Latreille, 1804) possess four ovarioles in each ovary. Queen and workers have the same ovarian development during the larvallife, but in lhe late larval stage the queen ovary beco me larger. During pupation a higher rate of cell division is observed in queen ovarioles and a higher rale of cell death in workers. Newly em
Revista Brasileira de Zoologia. Publicado em: 2002-09
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4. Worker caste polymorphism has a genetic basis in Acromyrmex leaf-cutting ants
Division of labor is fundamental to the success of all societies. The most striking examples are the physically polymorphic worker castes in social insects with clear morphological adaptations to different roles. These polymorphic worker castes have previously been thought to be a classic example of nongentically controlled polymorphism, being mediated e
National Academy of Sciences.
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5. Interactions in Colonies of Primitively Social Bees: Artificial Colonies of Lasioglossum zephyrum
Lasioglossum zephyrum usually lives in small colonies but is facultatively solitary. Lone bees and colonies produced from female pupae of the same generation were established in artificial indoor nests. Both the length of the prereproductive period and the number of cells produced per bee per day decreased with increasing colony size. In most colonies, ovari
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6. 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.