Dr. Murai Éva szerk.: Parasitologia Hungarica 14. (Budapest, 1982)

RESULTS 1. Andrya rhopalocephala (Riehm, 1881) Individuals of 600-800 mm in length were examined. In those, the uterus starts developing in the segments 115-120 (counted from the anterior part of the body). Originally, it has the form of an aggregation of cells which are situated anteriorly of the cirrus sac, near the ovary, and they do not exceed the longitudinal excretory canals (Fig. 1, 2). This aggregation spreads progressively into the space anteriorly of the ovary (Fig. 3, 4, 5). Posterior to about segment 160, this aggregation develops also in the aporal part of segments, near the longitudinal excretory canals. It does not exceed them, but it spreads progressively towards the aporal parts of the ovary (Fig. 6,9). Hence, individual aggregations develop only in the space between the longitudinal ventral excretory canals. In all cases, the progressively developing aggregation of uterus cells has a distinctly irregular margin. In post-mature segments, the uterus increases further in anterior-posterior width, becoming fenestrated and assuming a reticulate structure (Fig. 7, 10). In segments where eggs start developing, the reticulate structure of the uterus is markedly maintained. It is maintained well also in gravid segments where the processes of the uterus proliferate among the eggs (Fig. 7, 8, 9). 2. Paranoplocephala omphalodes (Hermann, 1783) Tapeworms of 96-111 mm in length were examined. The origin of the uterus could be first discerned as far anterior as segments 110-115 of the strobila. It is an aggregation of cells, situated anteriorly, in a considerable proximity of the ovary (Fig. 13, 14). In this phase, a similar aggregation of cells develop as a cord-like aggregation beyond the longitudinal excretory canals (Fig. 15). Both aggregations develop progressively and they form fenestrated structures (Fig. 16, 17). They exceed the ventral excretory canals bilaterally. Further developmental process of the uterus continues in similar way to that described by RAUSCH (1976). In pre-gravid segments there is a well developed spongy uterus (Fig. 18). Similarly to A. rhopalocephala, in fully gravid segments the processes of the uterus proliferate among eggs so that the uterus has a reticulate structure (Fig. 19, 20). Figs. 1-4. Andrya rhopalocephala (Riehm, 1881). 1 = Poral part of mature segments; 2 = Poral part of mature segments showing the beginning of the uterus; 3-4 = Poral part of post-mature segments showing the development of the uterus. Figs. 5-8. Andrya rhopalocephala (Riehm, 1881). 5 = Poral part of segments showing the development of the uterus; 6 = Aporal part of segments showing the development of the uterus; 7 = Part of the pre-gravid segment; 8 = Aporal part of gravid segments. Figs. 9-12. Andrya rhopalocephala (Riehm, 1881). 9 = Poral part of pre-gravid segment; 10= Part of the gravid segment; 11 = Part of full gravid segment; 12 = Part of full gravid segment. Proliferations of the uterus. Figs. 13-16. Paranoplocephala omphalodes (Hermann, 1783). 13 = Part of mature segment, aggregations of cells showing the beginning of the uterus; 14 = Part of mature segment showing the evolution of the uterus; 15 = Part of mature segment showing the beginning of the uterus in the poral part of segment, beyond the longitudinal excretory canals; 16 = Fenestrated uterus. Figs. 17-20. Paranoplocephala omphalodes (Hermann, 1783). 17 = Fenestrated uterus in pre-gravid segments; 18 = Part of uterus in gravid segment; 19 = Middle part of uterus in gravid segment with the proliferation of uterus, detail; 20 = Aporal part of uterus in gravid segment. Figs. 21-23. Uterus development in some Anoplocephalidae species. 21 = Anoplocephala magna (Abildgaard, 1789), part of gravid segments; 22 = Anoplocephaloides dentata (Galli-Valerio, 1905), part of gravid segment; 23 = Anoplocephaloides mamillana (Mehlis, 1831), part of gravid segments.