Histology and histochemistry of the ventriculus of Dolichoderus (=Monacis) bispinosus (OLIVIER, 1792) (Hymenoptera : Formicidae)

In this study we histologically and histochemically describe the ventriculus of Dolichoderus bispinosus. The epithelium consists of two basic cell types, highly basophilic generative cells, and digestive cells. The latter present several cytoplasmic vesicles. rich in acidic and neutral polysaccharides, and basic proteins. Also, these. cells exhibit an apocrine secretion pattern. A mass of fibrous material is observed on the surface of the epithelium. Finally, we discuss the results obtained. (c) 2005 Elsevier Ltd. All rights reserved.

Morphological features and occurrence of degenerative characteristics in the hypopharyngeal glands of the paper wasp Polistes versicolor (Olivier) (Hymenoptera : Vespidae)

Different histochemical techniques were applied to examine the morphological features of the secretory cells of hypopharyngeal glands in the wasp Polistes versicolor. The results showed that most analyzed individuals present active glands with secretion stored in the cytoplasm. In some glands, morphological analyses revealed the presence of degenerative characteristics. Analyses of cellular integrity, however, did not detect dead cells. The results showed that, in P. versicolor, the development and regression of the hypopharyngeal glands were not age related, unlike glands of social bees. (c) 2006 Elsevier Ltd. All rights reserved.

Comparative analysis of morphological, structural and morphometric patterns of Polistes versicolor (Olivier) (Hymenoptera: Vespidae) hypopharyngeal glands

O presente estudo descreve, por meio de técnicas de histologia e ultramorfologia, os padrões morfológico e estrutural das glândulas hipofaríngeas de Polistes versicolor (Olivier), comparando-os aos de outros grupos de Hymenoptera. Além disso, analisa a presença de variações intraespecíficas dessas glândulas por meio de análises morfométricas das células secretoras de vespas em diferentes idades. Na espécie estudada foi constatada a presença de glândulas com características primitivas, possuindo células secretoras que desembocam individualmente na placa hipofaríngea. O padrão morfológico encontrado nas glândulas hipofaríngeas foi basicamente o mesmo para todas as vespas estudadas, entretanto o comprimento das células glandulares apresentou variações significativas entre indivíduos. Aparentemente essas variações não estão relacionadas com a idade.

Produtividade em colônias de Polistes (Ap hanilopterus) vers icolor Olivier, 1791 (Hymenoptera: Vespidae, Polis tinae)

From August 2000 to December 2003, 185 colonies of Polistes versicolor were observed at the Bioterio of the Instituto de Biociencias, UNESP, Campus de Rio Claro, SP. In 144 colonies (77,84%) didn't emerge wasps, and of others 41 (22,16%), in 16 it was not possible to obtain the number of meconia, because they were attacked in several degrees of injury by natural enemies such as, ants, birds and parasitic wasps. The colonies productivity was measured through the meconia count in the cells of 25 colonies, which ranged from 1 to 6 meconia by cell.

An adaptive view of caste differentiation in the neotropical wasp Polybia (Trichothorax) sericea Olivier (Hymenoptera: Vespidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ultramorphology and histology of the ectal mandibular gland in Polistes versicolor (Olivier) (Hymenoptera: Vespidae)

The ectal mandibular gland (EMG) of wasps is homologous to the mandibular gland of ants and bees. This gland belongs to salivary system and its function stile unknown. The EMG of Polistes versicolor showed histological and ultramorphological features similar to that founded in ants and others wasps. This gland is constituted by a secretory region and a reservoir. The secretory region contains individual secretory cells that showed several nucleoli. The reservoir has a club shape and is connected to each mandible, by a duct that opens on its external side, which there are cuticular projections. The EMG of males is smaller than those of females. Our results suggested that the EMG secrete volatiles compounds that are liberated when the mandibles still open.

Ultramorfologia e Histologia da Glândula Salivar do Tórax de Polistes versicolor (Olivier) (Vespidae), Comparada com a de Outros Hymenoptera

The salivary system of the Hymenoptera consists of the mandible, hypopharynx and thoracic salivary glands. It is very important because it is related to various aspects of the life of the insects, such as pheromone production, feeding the young, food digestion and nest building. Adult Polistes versicolor (Olivier) individuals were dissected, the thoracic salivary glands removed and processed for scanning electronic microscopy and histological examination. The P. versicolor thoracic salivary gland presents alveolar secretory units, consists of pseudoacines and does not have a reservoir. Four types of cells are present in the gland. The T1 and T2 cells make up the pseudoacines and differ mainly by the many secretory vessels in T2. There is a cluster of T3 cells at the base of the gland duct collectors, also with secretory characteristics. The secretion produced in the pseudoacines is conducted by canals and ducts to the outside, and the latter are made of T4 cells. The comparison of these characteristics with those of different Hymenoptera species, already studied, showed that the thoracic salivary gland cannot be used as a single comparison factor in evolutionary studies.

Caracterização histoquímica e determinação do ciclo secretor da glândula salivar do tórax de Polistes versicolor (Olivier, 1791) (Hymenoptera: vespidae)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aspectos biológicos de Quesada gigas (Olivier, 1790) (Hemiptera: Cicadidae) em cafeeiro

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Fenologia, produção e qualidade dos frutos de aceroleira Cultivar Olivier, em Junqueirópolis/SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Glândula hipofaríngeas na vespa social Polistes versicolor (Olivier): da morfologia às relações com o comportamento

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

Estudo da morfologia funcional reprodutiva e desenvolvimento larval em laboratório de Stenopus hispidus(Olivier, 1811) (Crustacea, Decapoda, Stenopodidea)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Glândula ectomandibular e comportamento de Polistes versicolor (Olivier) (Hymenoptera, vespidae)

Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

Preferência alimentar e desenvolvimento de Cerotoma arcuata (Olivier) (Coleoptera: Chrysomelidae) em soja

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