Data/hora: 11/06/2024 01:16:46

Provedor de dados: | 76
País: | Brazil
Título: | Morphological aspects of cell reabsorption in laying queens and workers of Apis mellifera (Hymenoptera, Apidae)
Autores: | Patrício,Karina; Cruz-Landim,Carminda da.
Data: | 2008-12-01
Ano: | 2008
Palavras-chave: | Corpus luteus; Corpus atresicus; Oviposition; Histology; Ultrastructure.
Resumo: | The occurrence of cell reabsorption in the ovaries of queens in several rates of laying eggs, artificially impeded of laying, and in nurse workers, of Apis mellifera (Linnaeus, 1758), was studied with light (LM) and transmission electron microscopy (TEM). Two types of structures were described and named by analogy with vertebrates ovarian structures, as corpus luteus, when resulting from the reabsorption of the follicular cells after ovulation, and corpus atresicus when resulting from total follicular reabsorption at any oocyte developmental stage. These structures have the same morphological characteristics and physiological signification in both castes. The corpus luteus occurrence indicates ovulation and its number is correspondent to the queen's rates of oviposition. The presence of this structure in nurse workers ovarioles shows that this caste may lay eggs. The incidence of corpus atresicus in queens decay with the increasing of the oviposition indicating that the inhibition of the normal sequence of oocyte maturation in the ovaries is deleterious. Both, corpus luteus and corpus atresicus incidence may be influenced by environmental factors.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400001
Editor: | Museu de Ciências Naturais
Relação: | 10.1590/S0073-47212008000400001
Formato: | text/html
Fonte: | Iheringia. Série Zoologia  v.98 n.4 2008
Fonte: | info:eu-repo/semantics/openAccess