Data/hora: 13/06/2024 02:36:31

Provedor de dados: | 84
País: | Brazil
Título: | A comparative study of the ovaries in some Brazilian bees (Hymenoptera; Apoidea)
Autores: | Martins,Gustavo Ferreira; Serrão,José Eduardo.
Data: | 2004-01-01
Ano: | 2004
Palavras-chave: | Insect morphology; Ovary; Reproductive tract; Social behavior.
Resumo: | The present paper concerns the morphological features of ovaries in 33 species of bees with different social behavior patterns. The ovaries of bees were examined under light microscope. They are polytrophic-meroistic ovaries formed for an anterior germarium and a basal vitellarium. The germarium houses the germ cells and in the vitellarium there are follicles arranged linearly. In general the follicle is constituted by a nutritive chamber (a cluster of nurse cells) and an oocyte chamber, both covered by a single epithelial layer of follicular cells. The number of ovarioles per ovary and the number of mature oocyte per ovary were analyzed. Measurements of ovariole length, oocyte size, oocyte width, follicular epithelial height and the intertegular distance were made to support the comparative study. Statistical analysis showed that representatives of Meliponini and Apini have the largest ovaries. On the other hand, in solitary bees were found the bigger oocytes. Furthermore, our results suggest that there is a tendency for increase in ovary size and ovariole number, with increasing level of sociality.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492004000300001
Editor: | Museu de Zoologia da Universidade de São Paulo
Relação: | 10.1590/S0031-10492004000300001
Formato: | text/html
Fonte: | Papéis Avulsos de Zoologia  v.44 n.3 2004
Fonte: | info:eu-repo/semantics/openAccess