Germinal and non-germinal lines in the ovotestis of Helix aspersa: a survey
- 1 February 1987
- journal article
- Published by Springer Nature in Wilhelm Roux' Archiv für Entwicklungsmechanik der Organismen
- Vol. 196 (2) , 113-118
- https://doi.org/10.1007/bf00402032
Abstract
The study of gonadal organogenesis and differentiation by means of light and electron microscopy suggested the following in Helix aspersa: (1) the distal parts of the acini have components of mesodermal origin, whereas the neck and efferent duct comprise ectodermal elements; (2) a segregation of a germinal line occurs early, during the embryonic life; (3) in juvenile and adult animals, male and female cells arise from a germinal ring located at the base of the acinar neck. Apart from developing oocytes, the epithelium lining the distal region of the acini consists of somatic cells (Sertoli and follicle cells).Keywords
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