Now showing items 1-10 of 259
Characterization of the social wasp guild (Hymenoptera: Vespidae) visiting flowers in the Caatinga (Itatim, Bahia, Brazil)
Thirteen species of flower-visiting social wasps were collected from 41 plant species. The number of wasp species did not vary significantly. On the other hand, the number of individuals varied significantly during the ...
A comparative study of protein and enzymatic activity in venoms of some common wasps (Hymenoptera: Vespidae) from São Paulo State
The Hymenoptera Aculeata venoms, with few exceptions, have been poorly studied and characterized. Nevertheless, they have raised increasing interest due to their medical importance, since accidents with these insects are ...
Caste differences in Polybia ematiata, a mud-nesting eusocial wasp (hymenoptera: Vespidae), that bear on pre-imaginal determination but not size differences
The Epiponini is a group of social wasps living in polygynic societies. The caste dimorphism varies from incipient to well distinct. Morphometric analyses on twelve body parts and ovarian development of Polybia emaciata ...
Polybia spp. como depredadores en el valle del Yeguare, Honduras
(Zamorano: Escuela Agrícola Panamericana, 2014, 2014)
Structural and functional characterization of two novel peptide toxins isolated from the venom of the social wasp Polybia paulista
(Elsevier B.V., 2005-11-01)
Two novel inflammatory peptides were isolated from the venom of the social wasp Polybia paulista. They had their molecular masses determined by ESI-MS and their primary sequences were elucidated by Edman degradation chemistry ...
The neurotoxicological effects of mastoparan Polybia-MPII at the murine neuromuscular junction: an ultrastructural and immunocytochemical study
Polybia-MPII (INWLKLGKMVIDAL-NH(2)), a mastoparan isolated from the crude venom of the swarming wasp Polybia paulista, was injected into the left hind limb of Swiss white mice. Between 3 h and 21 days later the mice were ...
High-performance gel filtration patterns of venoms from three species of wasps of the genus Polybia (hymenoptera, vespidae).
The profiles of high-performance gel filtration of venoms from Polybia paulista, Polybia ignobilis and Polybia occidentalis occidentalis showed 13 peaks distributed among the three species. These profiles presented ...
Hyperalgesic and edematogenic effects of peptides isolated from the venoms of honeybee (Apis mellifera) and neotropical social wasps (Polybia paulista and Protonectarina sylveirae)
Stings by bees and wasps, including Brazilian species, are a severe public health problem. The local reactions observed after the envenoming includes typical inflammatory response and pain. Several studies have been performed ...