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The Karyotypes of Calicophoron microbothrium and Carmyerius gregarius from Egyptian ruminants

Published online by Cambridge University Press:  05 June 2009

A.A. Ashour ,
N.H.A. Hassan ,
A.M. Ibrahim  and
A.I El-Kabbany
A.A. Ashour
Affiliation:
Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt
N.H.A. Hassan
Affiliation:
Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt
A.M. Ibrahim
Affiliation:
Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt
A.I El-Kabbany
Affiliation:
Department of Zoology, Faculty of Science, Zagazi University, Zagazig, Egypt
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Abstract

The karyotypes of the two amphistomes Calicophoron microbothrium Fischoeder, 1901 and Carmyerius gregarius (Looss, 1896), Stiles & Goldberger, 1910 from Egyptian ruminants were studied using the air drying technique. The two species have similar number of chromosomes (n = 9), but differ in chromosome morphology. All the chromosomes of C. microbothrium are subtelocentric, except the first and the fifth are metacentric, whereas the chromosomes of C. gregarius are submetacentric, subtelocentric and acrocentric. Some cells in the two species showed tetraploidy. The results are discussed in terms of the phylogenetic relationship of different amphistomes.

Type
Research Papers
Information
Journal of Helminthology , Volume 69 , Issue 2 , June 1995 , pp. 107 - 111
Copyright
Copyright © Cambridge University Press 1995

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