CYTOCHEMICAL INVESTIGATIONS OF FEMALE GONAD OF INSECT HYDROPHILUS ALIVACEUS (COLEOPTERA)

The female gonad of beetle Hydrophilus alivaceus consists of multinumbered ovarioles. Each ovalriole is bulbous and divided into two zones: the anterior Small, semicircular and cap-like germarium and posteriorly large continuous with voluminous Vitellarium. Histologically, the cavity of germarium contains germ cells which on maturation of ovary transform directly into oocyte, trophocyte and primary oocyte, all lodge in vitellarium. Histochemically, all germ cells are the seat of protein synthesis and contain the complex mixture of protein, carbohydrate and lipid.