Evolução do sistema reprodutivo de formigas da tribo Attini (Hymenoptera : myrmiciane): análise das espermatecas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A glândula frontal e musculatura associada: morfologia e aplicação como indicador taxonômico de gêneros neotropicais de Nasutitermitinae (Isoptera, termitidae)

Pós-graduação em Ciências Biológicas (Biologia Celular e Molecular) - IBRC

O papel dos microfungos associados aos jardins das formigas Attini (Hymenoptera: Formicidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ação tóxica de ingredientes ativos em Atta sexdens rubropilosa Forel, 1908 (Hymenoptera: Formicidae) visando seu emprego em iscas formicidas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Mediadores comportamentais e comunicação química da vespa eussocial basal Mischocyttarus (Monocyttarus) cassununga Von Ihering, 1903 (Hymenoptera, Vespidae, Mischocyttarini)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise comparativa das glândulas pós-faríngeas e sua participação na utilização de lipídeos pelas formigas (Hymenoptera : Formicidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Variação morfofisiológica das castas em algumas espécies de vespas enxameantes neotropicais (Vespidae: Epiponini) ao longo do ciclo colonial

Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

Marimbondos: a review on the neotropical swarm-founding polistines

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Leaf-cutting ants: an unexpected microenvironment holding human opportunistic black fungi

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análise histoquímica comparativa das glândulas de veneno de abelhas Apis mellifera africanizada e das vespas Polistes versicolor, Agelaia palipes palipes e Polybia paulista

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análises morfológica e histoquímicas do ventrículo e do cérebro de operárias recém emergidas de Apis Mellifera L. (Hymenoptera, Apidae) tratadas com Thiamethoxam

Apis mellifera honeybees are social insects of economic importance, by providing honeybee products, and by the pollination of natural areas of vegetation or agricultural areas. The constant use of pesticides, including the thiamethoxam, which is an insecticide belonging to the class of neonicotinoids with neurotoxic action, is subjecting pollinators to situations of severe stress, which has been evidenced by the decrease in the density of honeybees in many parts of the world. By these considerations, the present study aimed to assess the acute toxicity of thiamethoxam for newly emerged workers of A. mellifera, and to investigate the effect of sublethal doses of this insecticide on the survival time and its cytotoxicity to the brain and midgut to the honeybees. It was established the value of the lethal concentration 50 (LC50) equal to 4.28 ng thiamethoxam/μL of food and from it, the sublethal concentrations of 0.428 ng thiamethoxam/μL (CL50/10) and 0.0428 ng thiamethoxam/μL (CL50/100), which were used in bioassays of intoxication of the honeybees. After the bioassays the bees were dissected and the brain and midguts were collected to analyze possible morphological (staining with Hematoxylin-Eosin) and histochemical alterations (Xylidine Ponceau technique, and Feulgen and PAS reactions) caused by exposure to thiamethoxam, and to calculate the lethal time (LT50) for the workers. The duration of the bioassays was 8 days after beginning of feeding. The results obtained showed that the thiamethoxam is toxic to newly-emerged workers of A. mellifera, causing changes in survival time of individuals. This study also shown that the thiamethoxam causes morphological and histochemical alterations on the midgut and brain of workers. These alterations may be reflected in physiological and behavioral changes that can modify the operation of the colony

Disappearance of fat body proteins during soldier differentiation in the neotropical termite Heterotermes tenuis (Isoptera: Rhinotermitidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Sexual dimorphism and phenotypic plasticity in the antennal lobe of a stingless bee, Melipona scutellaris

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Tarsomere and distal tibial glands: structure and potential roles in termites (Isoptera: Rhinotermitidae, Termitidae)

Conselho Nacional de Desenvolvimento Científico e Tecnologico (CNPq)

Profiling the peptidome of the venom from the social wasp Agelaia pallipes pallipes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)