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Apparent absence of genetic differences among species of Teladorsagia (Nematoda: Trichostrongylidae)

Published online by Cambridge University Press:  05 June 2009

R. H. Andrews  and
I. Beveridge
R. H. Andrews
Affiliation:
Department of Microbiology and Immunology, The University of Adelaide, North Terrace, Adelaide, South Australia, 5000
I. Beveridge
Affiliation:
Department of Veterinary Science, University of Melbourne, Parkville, Victoria, 3052, Australia
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Abstract

The technique of allozyme electrophoresis was applied to three species of Teladorsagia present in sheep to determine the extent of genetic variation among species. Thirty-four enzyme loci were established of which 22 were invariant and 12 were shown to be polymorphic. No fixed allelic differences were detected among the species and the level of polymorphism was within the range found commonly between populations of a single species. Therefore, the genetic data support breeding data and existing morphological evidence that T. circumcincta, T. davtiani and T. trifurcata as currently recognized do in fact belong to a single species.

Keywords

Teladorsagiaallozyme electrophoresispolymorphismgenetic differences
Type
Research Article
Information
Journal of Helminthology , Volume 64 , Issue 4 , December 1990 , pp. 290 - 294
Copyright
Copyright © Cambridge University Press 1990

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References

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