Lymnaea columella check for this species in other resources - infection - Fasciola hepatica check for this species in other resources - Minas Gerais - Brazil"/>
search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 2, 2002, pp. 407-410
Bioline Code: oc02077
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 2, 2002, pp. 407-410

 en Aspects of the Maintenance of the Life Cycle of Fasciola hepatica check for this species in other resources in Lymnaea columella check for this species in other resources in Minas Gerais, Brazil
Cecília Pereira de Souza; Kelly Grace Magalhães; Liana Konovaloff Jannotti Passos; Glaucia Cristina Pereira dos Santos; Fabio Ribeiro & Naftale Katz

Abstract

Fascioliasis is a parasitic disease of domestic ruminants that occurs worldwide. The lymnaeid intermediate hosts of Fasciola hepatica check for this species in other resources include Lymnaea columella check for this species in other resources , which is widely distributed in Brazil. A colony of L. columella from Belo Horizonte, MG, was reared in our laboratory to be used in studies of the F. hepatica life cycle, the intermediate host-parasite relationship and development of an anti-helminthic vaccine. In the first experiment 1,180 snails were exposed to miracidia of F. hepatica eggs removed from the biliary tracts of cattle from the State of Rio Grande do Sul. In the second and third experiments the snails were exposed to miracidia that had emerged from F. hepatica eggs from Uruguay, maintained in rabbits. The rates of infection in the first, second and third experiments were 0, 42.1 and 0% respectively. Over 15,806 metacercariae were obtained and stored at 4°C. Four rabbits weighing 1.5 kg each were infected with 32-44 metacercariae and two with 200. Three rabbits begin to eliminate eggs of the parasite in the feces from 84 days after infection onwards. The biological cycle of F. hepatica in L. columella and the rabbit was completed within 124 days.

Keywords
fascioliasis - Lymnaea columella check for this species in other resources - infection - Fasciola hepatica check for this species in other resources - Minas Gerais - Brazil

 
© Copyright 2002 - Instituto Oswaldo Cruz - Fiocruz
Alternative site location: http://memorias.ioc.fiocruz.br

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil