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‘Babesia gibsoni’ of dogs from North America and Asia belong to different species

Published online by Cambridge University Press:  01 April 2000

M. ZAHLER ,
H. RINDER ,
E. ZWEYGARTH ,
T. FUKATA ,
Y. MAEDE ,
E. SCHEIN  and
R. GOTHE
M. ZAHLER
Affiliation:
Institute for Comparative Tropical Medicine and Parasitology, University of Munich, Leopoldstrasse 5, D-80802 Munich, Germany
H. RINDER
Affiliation:
Department of Infectious Diseases and Tropical Medicine, University of Munich, Leopoldstrasse 5, D-80802 Munich, Germany
E. ZWEYGARTH
Affiliation:
Parasitology Division, Onderstepoort Veterinary Institute, Private Bag X5, Onderstepoort 0110, South Africa
T. FUKATA
Affiliation:
Department of Veterinary Medicine, College of Agriculture, Osaka Prefecture University, Sakai 599-8531, Japan
Y. MAEDE
Affiliation:
Laboratory of Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060, Japan
E. SCHEIN
Affiliation:
Institute for Parasitology and Tropical Veterinary Medicine, University of Berlin, Koenigsweg 67, D-14163 Berlin, Germany
R. GOTHE
Affiliation:
Institute for Comparative Tropical Medicine and Parasitology, University of Munich, Leopoldstrasse 5, D-80802 Munich, Germany
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Abstract

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18S rDNA sequences from 4 isolates of Babesia gibsoni originating from Japan, Malaysia and Sri Lanka were compared with a previously published, 0·5 kb portion of the 18S rDNA from a B. gibsoni isolate from California, USA, and with the corresponding 18S rDNA sequences of other Babesia spp. Distance, parsimony and maximum likelihood analyses showed almost identical genotypes among the small canine Babesia from Asia, but an unexpectedly distant genetic relationship to that from the USA. While the American isolate segregated together with B. equi, the Asian isolates showed a close relationship to B. divergens and B. odocoilei. These results indicate that small Babesia of dogs originating from North America and Asia belong to different, genetically distantly related species.

Keywords

Babesia gibsonidogTheileriagenetic species differentation18S rDNAnew canine species
Type
Research Article
Information
Parasitology , Volume 120 , Issue 4 , April 2000 , pp. 365 - 369
Copyright
2000 Cambridge University Press