Cytoarchitecture of <i>Caudiverbera caudiverbera</i> stage VI oocytes

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dc.contributor.authorDabiké, M
dc.contributor.authorPreller, A
dc.date.accessioned2025-01-21T01:32:04Z
dc.date.available2025-01-21T01:32:04Z
dc.date.issued1999
dc.description.abstractThe general characteristics and salient features of the full-grown stage VI Caudiverbera caudiverbera oocyte at the light and electron microscopy level are described. The oocyte is a huge cell with radial symmetry and distinct polarity. A black animal hemisphere, rich in pigment granules and containing the nucleus, is clearly distinguished from the unpigmented white-yellowish vegetal hemisphere. The cell is surrounded by a highly invaginated plasma membrane, with numerous microvilli. The cortex underlying the plasma membrane contains cortical and pigment granules, mitochondria, rough endoplasmic reticulum and coated vesicles. Cytoskeletal components, such as actin filaments and microtubules, are also found in this region. The predominant structures, distributed throughout the cell, are the yolk platelets, which show a gradient in size with small platelets in the animal half and very large ones in the vegetal zone. Mitochondria are also very abundant in both hemispheres and clouds of these organelles are found in the perinuclear region, frequently associated with microtubules. Developed Golgi complexes are present in the cytoplasm and occasionally, annulate lamellae appear towards the inner zones. The nucleus is a large structure containing numerous nucleoli. The nuclear envelope is highly invaginated, especially at the side facing the vegetal pole. It is regularly perforated by large nuclear pores. Our results show that the structural organization of Caudiverbera oocytes, although similar to that of other amphibian oocytes. differs from them especially concerning the spatial distribution of several structural components.
dc.fuente.origenWOS
dc.identifier.issn0340-2061
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97197
dc.identifier.wosidWOS:000080093700002
dc.issue.numero6
dc.language.isoen
dc.pagina.final497
dc.pagina.inicio489
dc.revistaAnatomy and embryology
dc.rightsacceso restringido
dc.subjectamphibian eggs
dc.subjectcortex
dc.subjectcytoplasm
dc.subjectnucleus
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleCytoarchitecture of <i>Caudiverbera caudiverbera</i> stage VI oocytes
dc.typeartículo
dc.volumen199
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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