Prosthogonimus ovatus (Rudolphi, 1803)

Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, Zoodiversity 54 (1), pp. 11-16 : 13

Prosthogonimus ovatus (Rudolphi, 1803)

One adult specimen was collected from the bursa of Fabricius of one bird.

L o c a l i t y: Horodnia District (Chernihiv Region).

Description. Body pear-shaped ( fig. 1 , B), 1,899 long; its maximum width 735 in posterior quarter. Oral and ventral suckers subspherical. Oral sucker 130×136. Ventral sucker 250×263. Distance from anterior end of body to centre of ventral sucker 870. Pharynx well developed, round, 106×88. Testes elongate-oval. Right testis 283×220. Left testis 260×180. Cirrus-sac 350×80. Ovary 165×313. Ventral sucker totally covering ovary. Anterior border of uteri loops distal to intestine bifurcation, posterior border of uteri loops almost at end of body. Anterior edge of vitellarium at level of anterior border of uteri loops. Branches of vitellarium different in size. One branch extending to middle of testes. Another branch extending to end of testes. Eggs oval, numerous, 25–28× 13–14 in size.

Figures

Fig. 1. General view of the trematodes found in the corncrake in Ukraine: Brachylaima fuscata (A), Prosthogonimus ovatus (B), Prosthogonimus cuneatus (C). Scale bars 500 µm.