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Morphological characteristics of Echinococcus granulosus derived from buffalo in Iran

Published online by Cambridge University Press:  14 October 2011

SEYED HOSSEIN HOSSEINI ,
ARASH AMIN POUR  and
PARVIZ SHAYAN
SEYED HOSSEIN HOSSEINI*
Affiliation:
Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
ARASH AMIN POUR
Affiliation:
Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
PARVIZ SHAYAN
Affiliation:
Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
*
*Corresponding author: E-mail: hhoseini@ut.ac.ir
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Summary

Cystic echinococcosis is a significant parasitic disease in Iran, where a variety of animals act as intermediate hosts. In this study, 25 isolates of Echinococcus granulosus obtained from water buffalo from various parts of Iran were characterized on the basis of the morphology of the metacestode and the adult worm. The characteristics of protoscoleces from the different studied areas were nearly similar. They showed 2 rows of alternating large and small hooks and their shapes were smooth in outline. In contrast to the protoscoleces, the adult rostellar hooks showed a rough outline. The results showed that the total length, the blade lengths of the large and small hooks and the number of hooks are almost similar to those isolated from sheep but significantly different from those isolated from camels. The growth rates of adult E. granulosus (total worm length, segmentation and maturation) of buffalo origin, at 35 and 41 days post-infection of dogs, were nearly comparable to the common sheep strain. The form of the strobila and the morphology of the reproductive system were also similar to those of sheep origin. This suggests that the common sheep strain (G1) of E. granulosus may also use buffaloes as its intermediate host.

Keywords

Echinococcus granulosusbuffalomorphologygenotypestrainIran
Type
Research Article
Information
Parasitology , Volume 139 , Issue 1 , January 2012 , pp. 103 - 109
Copyright
Copyright © Cambridge University Press 2011

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