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Growth of a Japanese isolate ofTaenia crassiceps in intermediate and definitive hosts

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Abstract

Higher infection rates were observed in gerbils and voles than in ICR mice after oral inoculation with eggs of a Japanese isolate ofTaenia crassiceps. Asexual reproduction ofT. crassiceps cysticerci was observed in all gerbils and voles infected i.p. with the cysticerci. However, ICR mice and Wistar rats were not suitable for the asexual proliferation ofT. crassiceps. The hooks of cysticerci from mice were smaller than those from gerbils. In experimentally infected puppies, parasite development was noted as follows: strobilation and initial differentiation of the genital primordia on day 7 postinoculation (p.i.), appearance of the testes on day 9, observation of the ovaries on day 10, and development of the lateral branches of the uterus on day 15. The prepatent period was 27–31 days. After day 15 p.i., most of the worms were recovered from the middle third of the small intestine. The number of proglottids shed per day by each strobila was about 1. The number of eggs contained in a gravid segment was about 13000.

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Miyaji, S., Oku, Y., Kamiya, M. et al. Growth of a Japanese isolate ofTaenia crassiceps in intermediate and definitive hosts. Parasitol Res 76, 351–354 (1990). https://doi.org/10.1007/BF00928191

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