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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Studies on monieziasis of sheep I. Prevalence and antihelminthic effects of some plant extracts, a light and electron microscopic study
Parasitology Research, Volume 108, No. 1, Year 2011
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Description
Out of 2,343 examined sheep throughout the whole year, 271 were found to be infected with tapeworms (11.5%). The highest infection rate (22.1%) was recorded in autumn, while the lowest (6%) occurred in summer. Six species of cestodes were identified according to their prevalence: Moniezia expansa (74%), Moniezia denticulata (8.5%), Moniezia benedeni (4.8%), Moniezia trigonophora (2.7%), and Thysaniezia giardi (2.7%), T. giardi was recorded in Egypt for the first time. M. expansa was found throughout the year with two peaks in January (92.3%) and June (88.5%). SEM examination revealed that M. expansa scolex has four triangular suckers guarded by an X-shaped fibrous band that makes them open permanently. Also, there is a Y-shaped apical part at the scolex center which may be an embryonically non-developed rostellum. The whole worm body surface is covered with unidirectional microtriches. TEM showed that the tegument is underlaid by a thick fibrous interstitial layer below which an outer circular and an inner longitudinal muscular layer are arranged. Beneath these structures the subtegumental cells are found which have spherical electron-dense inclusions and various other cell organelles. Moreover, M. expansa has interproglottidal glands which contain secretory vesicles and secretions. For biological control of this parasite, different concentrations of crude plant extract of Artemisia cina were used in vitro and in vivo. In vitro, the results indicated that the plant extract is efficacious at all concentrations tested. Electron microscopic examination showed that many structures of the treated worms were affected. The most affected sites were the scolex and the microtriches of the outer tegumental surface. In vivo, treatment of heavily infected animals showed an antihelminthic effect, since the complete absence of eggs was recorded 9 days after treatment when fecal investigations were done. © 2010 Springer-Verlag.
Authors & Co-Authors
Bashtar, Abdel Rahman
Egypt, Giza
Faculty of Science
Hassanain, Mohey Abdel Hafez
Egypt, Giza
National Research Centre
Abdel-Ghaffar, Fathy A.
Egypt, Giza
Faculty of Science
Al-Rasheid, Khaled A.S.
Saudi Arabia, Riyadh
College of Sciences
Hassan, Soad E.
Egypt, Giza
National Research Centre
Mehlhorn, Heinz
Germany, Dusseldorf
Heinrich-heine-universität Düsseldorf
Al-Mahdi, Magda
Egypt, Giza
Faculty of Science
Morsy, Kareem S.
Egypt, Giza
Faculty of Science
Al-Ghamdi, Ali Othman
Saudi Arabia, Al-baha
Al Baha University
Statistics
Citations: 48
Authors: 9
Affiliations: 5
Identifiers
Doi:
10.1007/s00436-010-2060-2
ISSN:
09320113
Study Design
Cross Sectional Study
Cohort Study
Study Locations
Egypt