Ultrastructure of the ovary of Dermatobia hominis (Diptera: cuterebridae). II. Origin of the tunica propria in ovarioles
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Data
1990-09-01
Autores
Gregório, E. A. [UNESP]
Secco, V. N. D. P. [UNESP]
Toledo, L. A. [UNESP]
Lello, E. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Instituto Oswaldo Cruz, Ministério da Saúde
Resumo
Ovaries up to the 8th day pupae of Dermatobia hominis were studied by transmission electron microscopy. Ovarioles were recognized in ovaries of 4-day old pre-pupae, surrounded by a thin tunica propria of acellular fibrilar material similar in structure to the internal portion of the external tunica of the ovary. There is continuity of the tunica propria and the ovarian tunica, indicating that the former structure originates from the tunica externa. In 5 to 7-day pupae the interstitial somatic cells from the apical region of the ovary, close to the ovarioles, show delicate filamentous material inside of their rough endoplasmic reticulum cisternae; similar material is seem among these cells. Our observations suggest that interstitial somatic cells do not originate the tunica propria but contribute to its final composition.
Descrição
Palavras-chave
tunica propria, ovarioles, Dermatobia hominis, Diptera
Como citar
Memórias do Instituto Oswaldo Cruz. Instituto Oswaldo Cruz, Ministério da Saúde, v. 85, n. 3, p. 315-320, 1990.