Scientia Marina, Vol 68, No 3 (2004)

Ultrastructural studies of oogenesis in Bolinus brandaris (Gastropoda: Muricidae)


https://doi.org/10.3989/scimar.2004.68n3343

María José Amor
Departamento de Biología Celular, Facultat de Biologia, Spain

Monserrat Ramón
Institut de Ciències del Mar (CSIC), Spain

Mercé Durfort
Departamento de Biología Celular, Facultat de Biologia, Spain

Abstract


Ultrastructural studies of oogenesis in Bolinus brandaris are described. Although the initial phase of oogenesis is common to most animal species, vitellogenesis can be considered a species-specific characteristic. In the vitellogenesis of B.brandaris, mitochondria and endoplasmic reticula play a relevant role in the formation of myelinised membranous systems. Nuclear envelope, Golgi body and the oocyte plasma membrane invaginations are three possible origins for annulate lamellae. The latter can be considered membranous reservoirs. There are two sources for the vitellum: exogenous (from follicular cells) and endogenous (from the endoplasmic reticulum of the same oocyte).

Keywords


vitellogenesis; mitochondria; endoplasmic reticulum; annulate lamellae; imposex

Full Text:


PDF


Copyright (c) 2004 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Contact us scimar@icm.csic.es

Technical support soporte.tecnico.revistas@csic.es