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Ultrastructural observations of previtellogenic ovarian follicles of dove

Published online by Cambridge University Press:  04 February 2005

Otilia Zarnescu
Otilia Zarnescu
Affiliation:
Bucharest University, Faculty of Biology, Department of Animal Biology, Splaiul Independentei 91–95, Bucharest 5, Romania
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Abstract

Dove ovarian follicle is a complex structure composed of oocyte surrounded by a somatic compartment consisting of theca externa, theca interna and granulosa. The structure of ovarian follicle (1 and 2 mm) of dove was studied by electron microscopy. The granulosa was pseudostratified in the 1-mm-diameter follicles and stratified with two or three irregular rows of cells in the 2-mm-diameter follicles. In the larger follicle indentations between oocyte and granulosa cells become more numerous and the microvilli of granulosa cell elongated to form a zona radiata with similarly elongated oocyte microvilli. Lining bodies were present at the tips of granulosa microvilli and in the cortical region of the oocyte. In the oocyte cortex were observed coated pits, coated vesicles, dense tubules, multivesicular bodies and primordial yolk spheres. Primordial yolk spheres may contain lining bodies and were observed fused with dense tubules and multivesicular bodies or associated with smooth cisternae.

Keywords

DoveLining bodiesOvarian folliclesPrimordial yolk spheresUltrastructure
Type
Research Article
Information
Zygote , Volume 12 , Issue 4 , November 2004 , pp. 285 - 292
Copyright
2004 Cambridge University Press

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