Folia Parasitologica, vol. 55 (2008), issue 4

Folia Parasitologica 55[4] 309-312 (2008) | 10.14411/fp.2008.039

Ultrastructure of microtriches on the scolex of Cyathocephalus truncatus (Cestoda: Spathe-bothriidea)

Céline Levron1, Tomáš Scholz1, Bahram S. Dezfuli2
1 Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, Branišovská 31, 370 05 České Budějovice, Czech Republic
2 Department of Biology and Evolution, University of Ferrara, St. Borsari 46, 44100 Ferrara, Italy

The scolex surface of the mature spathebothriidean Cyathocephalus truncatus (Pallas, 1781), a parasite of the brown trout Salmo trutta fario L., was studied using scanning and transmission electron microscopy. A particular attention was paid to microtriches, unique structure on the surface of the Cestoda. The scolex of C. truncatus is covered with two types of filiform microtriches (filitriches): aciculate (≈ 3 µm long) and capillate (≈ 10 µm long). Capillate microtriches, which have never been reported in any other spathebothriideans, are described for the first time using transmission electron microscopy. The tegument covered with filiform microtriches only (no spiniform microtriches are present) is typical of cestode groups supposed to be the most basal, e.g., Gyrocotylidea, Spathebothriidea, and Caryophyllidea.

Received: March 21, 2008; Accepted: September 9, 2008; Published: December 1, 2008


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