COMPARATIVE-ANALYSIS OF THE OVIDUCT STRUCTURE OF CAMPODEA SP (DIPLURA, CAMPODEINA) AND PETROBIUS-BREVISTYLIS (MICROCORYPHIA)

The lateral oviduct walls of Campodea sp. are composed of one-layer ep ithelium. The epithelium is not surrounded by muscle fibers. Membranes of basal parts of oviduct cells form a system of regularly arranged f olds, which are equipped with numerous microfilaments. The small amoun t of organelles indicates a low synthetic activity of these cells. The oviduct walls of Petrobius brevistylis consist also of one-layer epit helium but is surrounded by muscle fibers. The latter form concentrati ons, which protrude into the body cavity. Similarly as in Campodea sp. in oviduct cells of P. brevistylis small number of organelles are fou nd.