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Online Journal of Veterinary Research

Volume 23 (5):376-382, 2019.

Echinococcus granulosus hook morphometry from sheep, cattle, donkeys and human, scolex specimens.


Haidear Barakat Abbass Al-Azzawi, Athmar Khdair Abbass Al-Azzawi.


Department of Parasitology, College of Veterinary Medicine, University of Baghdad, Iraq.




Abbass Al-Azzawi HBA, Khdair Abbass Al-Azzawi A., Echinococcus granulosus hook morphometry from sheep, cattle, donkeys and human, scolex specimens, 23(5):376-382, 2019. Hydatidiosis (Echinococcosis) the larval stage of Echinococcus granulosus is endemic in many less developed localities. Identification of strains by protoscolex hook morphometry could improve control and treatment. We report morphometry of Echinococcus granulosus hooks isolated from sheep, cattle, donkey and patients by ocular micrometer computation (fiji-win32). We found no significant difference between number and length of large hooks between any species. However we did find differences between large hook width and blade and handle width or length (P < 0.05). In small hooks we found differences (P < 0.05) between length, width and blade and handle lengths. However, in our study, we find that hook morphology per se does not accurately identify strains from different hosts of E. granulosus.

Key words: Echinococcus granulosus, protoscolex hooks, hosts, strain.