Variações sazonais na ultra-estrutura do ducto deferente de codorna doméstica (Coturnix coturnix)

• Autor(a) principal: Viegas, Kátia Aparecida da Silva
• Data de Publicação: 2011
• Outros Autores: Orsi, Antonio Marcos [UNESP], Domeniconi, Raquel Fantin [UNESP], Matheus, Selma Maria Michelin [UNESP], Schimming, Bruno César [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.seer.ufu.br/index.php/vetnot/article/view/18998; http://hdl.handle.net/11449/140322
• topic: Vas deferens; Ultrastructure; Quail; Codorna; Epitélio de revestimento; Ultra-estrutura

The vas deferens (VD) of domestic quail showed seasonal variability on the fine structure of the lining tubular epithelium during the four seasons along the year, whose features were marked more relevant in the autumn and spring which respectively corresponded to the quiescent and active phases of the annual testis cycle (“cycle”) in this species. During the fall quiescence had been verified tubular reduction of the VD caliber and luminal dimension followed by degenerative features of the principal epithelial cells and lack of luminal content of spermatozoa. Counter wise in the spring active phase of the "cycle” great dimension of the VD caliber and luminal dimension were observed and the luminal content was plenum of material represented prior by spermatozoa. Similar features occurred on the VD fine structure in the summer and winter according to our results. Fine structural features of the VD lining epithelium in the spring showed variability of cytoplasm organelle mainly related to active processes of endocytosis and protein synthesis, although more lysosomal activity was seen on the apical cytoplasm of principal epithelial cells in the recrudescent phase of winter. Moreover, it was verified a relative scarcity of cytoplasm organelle followed by presence of dark epithelial cells in the regressive phase of summer.