Regulation of secretory activity in the albumen gland of the pulmonate snail Lymnaea stagnalis (L.) |
| |
Authors: | Marijke de Jong-Brink H M Koop W F de Roos J M Bergamin-Sassen |
| |
Institution: | Biological Laboratory , Vrije Universiteit , P.O. Box 7161, De Boelelaan 1087, 1007 , MC Amsterdam , The Netherlands |
| |
Abstract: | The secretory activity of the albumen gland of the freshwater snail Lymnaea stagnalis was studied morphometrically (both at the light- and at the electron-microscope level) and biochemically under the following experimental conditions: (1) glandular tissue was implanted into acceptor snails and the glandular activity of the implants was compared to that of the glands of the donors and acceptors; (2) glandular activity was measured at various periods after oviposition; and (3) the activity was measured during a 24 h cycle (diurnal activity). The results indicate that cellular release of secretion material is regulated by a nervous mechanism, whereas synthetic activity is under hormonal control. |
| |
Keywords: | albumen gland secretory activity regulation denervation (implantation)—oviposition—diurnal activity Lymnaea stagnalis |
|
|