a1 Department of Clinical Studies, Samora Machel School of Veterinary Medicine, University of Zambia, Box 323 79, Lusaka, Zambia
a2 Department of Parasitology, Faculty of Veterinary Medicine, State University of Gent, Casinoplein 24, 9000 Gent, Belgium
a3 Department of Zoology, The Natural History Museum, Cromwell Road, South Kensington, London SW7 5BD, UK
A total of 358 cattle was examined for schistosome infection in Zambian slaughterhouses. A total of 542 worms collected from 104 infected individuals was examined for glucose-6-phosphate dehydrogenase and phosphoglucomutase using isoelectric focusing. The overall prevalence of infection was 51%. Ninety three percent of the infected animals had less than 100 worm pairs in the mesenteric veins. Schistosoma mattheei was the predominant species (75%); S. leiperi (12%) and S. margrebowiei (2%) were also identified. The remaining 11% of the worms showed one of two distinct heterozygote patterns. Pattern A is identical to that of a laboratory-produced Fl S. mattheei × S. haematobium hybrid, but could also represent a S. mattheei × S. leiperi hybrid. Further studies are required to elucidate the origins of pattern B.
(Accepted June 08 1994)
c1 Author for correspondence.