Published online by Cambridge University Press: 06 April 2009
Studies on the susceptibility of the guinea-pig to infection with Schistosoma spindale Montgomery are reported.
Of twenty-two guinea-pigs, examined 33–153 days after exposures to 8000–50,000 cercariae of S. spindale, seventeen furnished conclusive evidence of the development of the female schistosome and two furnished inconclusive evidence. The male S. spindale developed in all the animals.
The female schistosomes attained maturity in 48 days or more and laid viable ova which could be detected in the liver, intestinal wall and lungs, but not in faeces.
The pathological lesions caused by the parasite consisted of thrombosis in the liver and lungs due to adult worms and pseudotubercles in the liver and nodules in the intestinal wall due to the eggs.
The guinea-pig shows varying degrees of individual susceptibility to infection with S. spindale and is an unsuitable host for the parasite, more especially for the female schistosome.