The Structure and Possible Function of the Calyx Region of the Female Reproductive System in the Granary Weevil, Sitophilus granarius (L.) (Col.) PDF

Keywords

reproduction, eggs, calyx

Abstract

The structure of the calyx region of the female reproductive system in Sitophilus granarius (L.) has been described and its possible function suggested. The Calyx region is composed of columnar epithelial cells, which are typical secretory cells that release large numbers of granules into the lumen. The results of the investigation indicate that the secretory droplets of the calyx may act as a lubricant during the passage of the egg through the egg canal. These droplets may also play a major role in the formation of the plug sealing the aperture of the hole where the eggs are laid within.