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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/23678


Title: Susceptibility of Nectomys rattus (Pelzen, 1883) to Experimental Infection with Schistosoma mansoni (Sambon, 1907): a Potential Reservoir in Brazil
Authors: Ribeiro, Ana Cláudia
Maldonado Jr., Arnaldo
D'Andrea, Paulo Sergio
Vieira, Giovane Oliveira
Rey, Luís
Keywords: Nectomys rattus - Nectomys squamipes - wild rodent - Schistosoma mansoni - experimental infection
Issue Date: 31-Dec-1998
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 93 Num s1
Abstract: The aim of the present research was to evaluate the potential of Nectomys rattus, the "water rat", to develop Schistosoma mansoni infection. Comparison with N. squamipes was carried out. Both species of rodents were submitted to transcutaneous infection using different infective cercariae loads: 50, 100 or 500. N. rattus showed high susceptibility to S. mansoni, with an infection rate of 71%. Rodents were able to excrete viable eggs of S. mansoni in the feaces during all infection period. For both species, the small intestine, followed by the liver and the large intestine, presented the highest concentration of eggs among the surveyed organs. Infection caused no animal death. Moreover, N. rattus accomplished the parasite's life cycle, by infecting the snails Biomphalaria glabrata and later Mus musculus. These evidences indicate that both N. rattus, as for N. squamipes are potential reservoirs for schistosomiasis in Brazil. Considering the fact that N. rattus and N. squamipes exist in the same natural ecosystems of S. mansoni, we suggest that these rodents must be regarded as influential factors in epidemiology surveys.
URI: http://hdl.handle.net/1807/23678
Other Identifiers: http://www.bioline.org.br/abstract?id=oc98191
Rights: Copyright 1998 Fundacao Oswaldo Cruz - Fiocruz
Appears in Collections:Bioline International Legacy Collection

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