Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil)
Autor(a) principal: | |
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Data de Publicação: | 1978 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista de Saúde Pública |
Texto Completo: | https://www.revistas.usp.br/rsp/article/view/22898 |
Resumo: | 124 small mammals around the Americana Reservoir (=Salto Grande Reservoir) were trapped during the period January, 1972 to August, 1975, in places where human and snail (Biomphalaria tenagophila) infections by S. mansoni have been recorded. The mammals included: 44 specimens of Cavia aperea aperea, 9 Didelphis albiventris, 7 Holochilus brasiliensis leucogaster, 39 Lutreolina crassicaudata, 3 Mus musculus brevirostris, 14 Oryzomys nigripes eliurus, 1 Oryzomys subflavus, 4 Rattus rattus and 3 Zygodontomys brachyurus. Two D. albiventris, 3 H. b. leucogaster and 5 L. crassicaudata were found naturally infected with S. mansoni. The presence of eggs was verified in feces and intestines and the worm burden was determined through recovery of schistosomes from mesenteric vessels and the hepatic portal system. The mature eggs of S. mansoni were rarely found in the feces of L. crassicaudata and D. albiventris although they were common in H. b. leucogaster. The low abundance of H. b. leucogaster in the study area probably indicates that this rodent contributes little to the dissemination of S. mansoni eggs. It does not appear that the small mammals in this region have an important role in maintaining the S. mansoni life cycle. |
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Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) Infecção natural de pequenos mamíferos por Schistosoma mansoni, na represa de Americana (São Paulo, Brasil) Schistosoma mansoniMamíferosRoedoresHospedeirosSchistosoma mansoniMammalsRodentsCarrier state 124 small mammals around the Americana Reservoir (=Salto Grande Reservoir) were trapped during the period January, 1972 to August, 1975, in places where human and snail (Biomphalaria tenagophila) infections by S. mansoni have been recorded. The mammals included: 44 specimens of Cavia aperea aperea, 9 Didelphis albiventris, 7 Holochilus brasiliensis leucogaster, 39 Lutreolina crassicaudata, 3 Mus musculus brevirostris, 14 Oryzomys nigripes eliurus, 1 Oryzomys subflavus, 4 Rattus rattus and 3 Zygodontomys brachyurus. Two D. albiventris, 3 H. b. leucogaster and 5 L. crassicaudata were found naturally infected with S. mansoni. The presence of eggs was verified in feces and intestines and the worm burden was determined through recovery of schistosomes from mesenteric vessels and the hepatic portal system. The mature eggs of S. mansoni were rarely found in the feces of L. crassicaudata and D. albiventris although they were common in H. b. leucogaster. The low abundance of H. b. leucogaster in the study area probably indicates that this rodent contributes little to the dissemination of S. mansoni eggs. It does not appear that the small mammals in this region have an important role in maintaining the S. mansoni life cycle. No período de janeiro de 1972 a agosto de 1975, nas margens da Represa de Americana (= Represa de Salto Grande), Brasil, em locais onde foi constatada a infecção por Schistosoma mansoni no homem e em Biomphalaria tenagophila, foram capturados 124 pequenos mamíferos: 44 exemplares de Cavia aperea aperea; 9 de Didelphis albiventris; 7 de Holochilus brasiliensis leucogaster; 39 de Lutreolina crassicaudata; 3 de Mus musculus brevirostris; 14 de Oryzomys nigripes eliurus; 1 de Oryzomys subflavus; 4 de Rattus rattus e 3 de Zygodontomys brachyurus. Verificou-se a infecção natural por S. mansoni em 2 exemplares de D. albiventris, em 3 de H. b. leucogaster e em 5 de L. crassicaudata. Estudou-se nestes animais a presença de elementos esquistossomóticos nas fezes e no intestino, bem como a distribuição e sexo de vermes adultos no sistema porta. Nas fezes de L. crassicuadata e de D. albiventris raramente foram observados ovos maduros do trematódeo. Em H. b. leucogaster era comum a presença destes elementos nas fezes. Devido a pequena abundância de H. b. leucogaster na área estudada, é provável que este roedor pouco contribua na disseminação de ovos de S. mansoni. Parece que a fauna de pequenos mamíferos estudada nesta região não desempenha papel relevante na manutenção do ciclo de S. mansoni. Universidade de São Paulo. Faculdade de Saúde Pública1978-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rsp/article/view/2289810.1590/S0034-89101978000200012Revista de Saúde Pública; Vol. 12 No. 2 (1978); 200-208 Revista de Saúde Pública; Vol. 12 Núm. 2 (1978); 200-208 Revista de Saúde Pública; v. 12 n. 2 (1978); 200-208 1518-87870034-8910reponame:Revista de Saúde Públicainstname:Universidade de São Paulo (USP)instacron:USPporhttps://www.revistas.usp.br/rsp/article/view/22898/24922Copyright (c) 2017 Revista de Saúde Públicainfo:eu-repo/semantics/openAccessKawazoe, UraraDias, Luiz Candido de SouzaPiza, José de Toledo2012-05-28T14:14:38Zoai:revistas.usp.br:article/22898Revistahttps://www.revistas.usp.br/rsp/indexONGhttps://www.revistas.usp.br/rsp/oairevsp@org.usp.br||revsp1@usp.br1518-87870034-8910opendoar:2012-05-28T14:14:38Revista de Saúde Pública - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) Infecção natural de pequenos mamíferos por Schistosoma mansoni, na represa de Americana (São Paulo, Brasil) |
title |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) |
spellingShingle |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) Kawazoe, Urara Schistosoma mansoni Mamíferos Roedores Hospedeiros Schistosoma mansoni Mammals Rodents Carrier state |
title_short |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) |
title_full |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) |
title_fullStr |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) |
title_full_unstemmed |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) |
title_sort |
Natural infection of small mammals with Schistosoma mansoni, at the Americana Reservoir (S. Paulo, Brazil) |
author |
Kawazoe, Urara |
author_facet |
Kawazoe, Urara Dias, Luiz Candido de Souza Piza, José de Toledo |
author_role |
author |
author2 |
Dias, Luiz Candido de Souza Piza, José de Toledo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Kawazoe, Urara Dias, Luiz Candido de Souza Piza, José de Toledo |
dc.subject.por.fl_str_mv |
Schistosoma mansoni Mamíferos Roedores Hospedeiros Schistosoma mansoni Mammals Rodents Carrier state |
topic |
Schistosoma mansoni Mamíferos Roedores Hospedeiros Schistosoma mansoni Mammals Rodents Carrier state |
description |
124 small mammals around the Americana Reservoir (=Salto Grande Reservoir) were trapped during the period January, 1972 to August, 1975, in places where human and snail (Biomphalaria tenagophila) infections by S. mansoni have been recorded. The mammals included: 44 specimens of Cavia aperea aperea, 9 Didelphis albiventris, 7 Holochilus brasiliensis leucogaster, 39 Lutreolina crassicaudata, 3 Mus musculus brevirostris, 14 Oryzomys nigripes eliurus, 1 Oryzomys subflavus, 4 Rattus rattus and 3 Zygodontomys brachyurus. Two D. albiventris, 3 H. b. leucogaster and 5 L. crassicaudata were found naturally infected with S. mansoni. The presence of eggs was verified in feces and intestines and the worm burden was determined through recovery of schistosomes from mesenteric vessels and the hepatic portal system. The mature eggs of S. mansoni were rarely found in the feces of L. crassicaudata and D. albiventris although they were common in H. b. leucogaster. The low abundance of H. b. leucogaster in the study area probably indicates that this rodent contributes little to the dissemination of S. mansoni eggs. It does not appear that the small mammals in this region have an important role in maintaining the S. mansoni life cycle. |
publishDate |
1978 |
dc.date.none.fl_str_mv |
1978-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/rsp/article/view/22898 10.1590/S0034-89101978000200012 |
url |
https://www.revistas.usp.br/rsp/article/view/22898 |
identifier_str_mv |
10.1590/S0034-89101978000200012 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/rsp/article/view/22898/24922 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Revista de Saúde Pública info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Revista de Saúde Pública |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Saúde Pública |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Saúde Pública |
dc.source.none.fl_str_mv |
Revista de Saúde Pública; Vol. 12 No. 2 (1978); 200-208 Revista de Saúde Pública; Vol. 12 Núm. 2 (1978); 200-208 Revista de Saúde Pública; v. 12 n. 2 (1978); 200-208 1518-8787 0034-8910 reponame:Revista de Saúde Pública instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Revista de Saúde Pública |
collection |
Revista de Saúde Pública |
repository.name.fl_str_mv |
Revista de Saúde Pública - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
revsp@org.usp.br||revsp1@usp.br |
_version_ |
1800221769841246208 |