| Journal: | Veterinaria noticias |
| Database: | PERIÓDICA |
| System number: | 000315630 |
| ISSN: | 0104-3463 |
| Authors: | Orsi, Antonio Marcos1 Simoes, Karina2 Domeniconi, Raquel Fantin Matheus, Selma Maria Michelin |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Anatomia, Botucatu, Sao Paulo. Brasil 2Fundacao Paulista de Tecnologia e Educacao, Lins, Sao Paulo. Brasil |
| Year: | 2007 |
| Season: | Ene-Jun |
| Volumen: | 13 |
| Number: | 1 |
| Pages: | 17-29 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | Rete testis (RT) of quail was formed by epithelial passageways localized initially into the albuginea layer that recover the cranial pole of the testis passing afterwards to the related proximal epididymal region (ER). At the ER occurred a continuance of RT passageways with the mainly shaped chambers of the proximal efferent ducts (PED). PED had continuance with the distal efferent ducts (DED), forming an anastomotic tubular complex of RT-efferent ducts inside the ER. Small differences were noted on the RT-DEP-DED histologic structure along the year, being more evident in spring and autumn, respectively the active and quiescent phases of the annual testis cycle. More expressive variability was noted between the principal (P) epithelium cells and in tubular diameters of DEP-DED, during the two focused seasons. Spring features of RT-DEP-DED were characterised by relative enlargement of the passageways and marked organelle development in the apical cytoplasm of P cells, allowing conclude presence of active processes of endocytoses. Fall quiescence was marked by an enfolding pattern of all the tubular passageways, lacking of spermatozoa and small amount of heterogeneous material inside their luminal compartments, followed by presence of ultrastructural degenerative features in apical cytoplasm of P cells and ciliated cells of the DEPDED complex |
| Portuguese abstract | A rede testicular em codorna constituiu-se de canais e câmaras epiteliais localizadas inicialmente no parênquima testicular do pólo cranial do testículo. Deste, a rede testicular (RT) continuou na estrutura da albugínea, adentrando a parte proximal da região epididimária (RE). Na RE houve continuidade entre os canais da RT e as passagens dos ductos eferentes proximais (DEP). Posteriormente, as passagens dos DEP continuaram-se, na RE, com os ductos eferentes distais (DED). Ambos os ductos eram revestidos por epitélio colunar pseudoestratificado, tendo células principais (P) e ciliadas (C). Proximalmente, na RE formou-se um complexo tubular RT (segmento-extracapsular) e DEP. Diferenças pequenas observaram-se nas estruturas da RT e dos DEP-DED, nas estações do ano. Foram mais marcantes na primavera e outono, eqüivalendo às fases ativa e quiescente do ciclo reprodutivo anual. Nestas fases do ciclo, diferenças significativas notaram- se na ultra-estrutura das células P e nos calibres tubulares, maiores na primavera e menores no outono. Na primavera, no citoplasma apical de células P notou-se maior complexidade organelar, inferindo-se a ocorrência de processos endocitóticos ativos. A quiescência outonal caracterizou-se por redução do calibre tubular dos DEP-DED; luz tubular vazia de espermatozóides; degenerações de organelas citoplasmáticas e "debridamentos" citoplasmáticos apicais em células P e C |
| Disciplines: | Medicina veterinaria y zootecnia, Biología |
| Keyword: | Aves de corral, Reproducción y genética animal, Anatomía e histología, Testículos, Estructura microscópica, Codornices |
| Keyword: | Veterinary medicine and animal husbandry, Biology, Animal reproduction and genetics, Poultry, Anatomy and histology, Testis, Microscopic structure, Quails |
| Full text: | Texto completo (Ver HTML) |
