Comparative Morphology of the Scolices and Microtriches Among Five Species of Tetrabothrius (Eucestoda: Tetrabothriidae)

Authors

Eric P. Hoberg, USDA-ARSFollow
D. E. Sims, University of Prince Edward Island
P. H. Odense, National Research Council of Canada

Date of this Version

1995

Comments

Published in J. Parasitol., 81(3), 1995, p. 475-481

Abstract

The structure of the scolex, neck, and adjacent strobila of 5 species of Tetrabothrius was evaluated using low to high magnification scanning electron miscroscopy. Species-specific patterns and morphotypes (spiniform, papilliform, and filiform) of microtriches were found on scolices and strobilar tegument of Tetrabothrius (Oriana) affinis, Tetrabothrius (Oriana) filiformis, and Tetrabothrius (Tetrabothrius) sp. The presence, distribution, and form of microtriches may not be correlated with the subgeneric divisions of Tetrabothrius or the host taxon. Unique patterns do not appear to be shared with other groups of Cestodes, particularly other tetraphyllideans. We suggest that the spiniform, filiform, and papilliform types of microtriches may be symplesiomorphic for the Eucestoda.