| Author | Freire, Nilcéa | |
| Author | Silva, José Roberto Machado | |
| Author | Silva, Rosângela Rodrigues | |
| Author | Rey, Luís | |
| Access date | 2020-10-25T18:34:54Z | |
| Available date | 2020-10-25T18:34:54Z | |
| Document date | 2002 | |
| Citation | FREIRE, Nilcéa et al. Cercarial Chaetotaxy and Sex Differentiation of Schistosoma mansoni Deriving from Humans and Nectomys squamipes (Muridae: Sigmondontinae) in Brazil. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 97, n. 3, p. 127-132, Jan. 2002. | pt_BR |
| ISSN | 0074-0276 | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/44176 | |
| Language | eng | pt_BR |
| Publisher | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. | pt_BR |
| Rights | open access | |
| Subject in Portuguese | Schistosoma mansoni | pt_BR |
| Subject in Portuguese | Nectomys squamipes | pt_BR |
| Subject in Portuguese | Determinação sexual | pt_BR |
| Subject in Portuguese | Hospedeiro humano | pt_BR |
| Subject in Portuguese | Esquistossomose mansoni | pt_BR |
| Subject in Portuguese | Brasil | pt_BR |
| Title | Cercarial Chaetotaxy and Sex Differentiation of Schistosoma mansoni Deriving from Humans and Nectomys squamipes (Muridae: Sigmondontinae) in Brazil | pt_BR |
| Type | Article | |
| DOI | 10.1590/S0074-02762002000100023 | |
| Abstract | A comparative study was made between sympatric isolates of Schistosoma mansoni: one from a wild rodent (R)
Nectomys squamipes and another one from humans (H) isolated from a low endemic schistosomiasis transmission
area in Brazil. Our purpose was to detect differences between them concerning chaetotaxy (number and pattern of
distribution of the argentophilic papillae) of the cercariae by means of silver impregnation. No significant difference
(x > 0.05) between isolates was noted. Nevertheless, a significant difference (x < 0.05) was observed in the
cercarial index (ratio of the distance between the first and the second preacetabular papillae and the distance
between the first and the second dorsal preacetabular papillae) of male and female cercariae in both isolates. Males
presented a greater cercarial index than females. By means of multivariate analysis, male cercariae were distinguished from female cercariae through the following characteristics: average number of dorsal papillae on the right
quadrant, average number of ventral middle papillae on the right quadrant (H isolate) and average number of dorsal
middle papillae on the left quadrant (R isolate). The results suggest that R and H isolates belong to the same
population that could complete its life cycle in rodent-snail-rodent fashion. | pt_BR |
| Affilliation | Universidade do Estado do Rio de Janeiro. Faculdade de Ciências Médicas. Departamento de Patologia e Laboratório. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Universidade do Estado do Rio de Janeiro. Faculdade de Ciências Médicas. Departamento de Patologia e Laboratório. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Helmintologia. Laboratório de Helmintos Parasitos de Vertebrados. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Medicina Tropical. Laboratório de Biologia e Controle da Esquistossomíase Rio de Janeiro, RJ, Brasil. | pt_BR |
| Subject | Schistosoma mansoni | pt_BR |
| Subject | Cercariae chaetotaxy | pt_BR |
| Subject | Sex determination | pt_BR |
| Subject | Nectomys squamipes | pt_BR |
| Subject | Human host | pt_BR |
| Subject | Schistosomiasis mansoni | pt_BR |
| Subject | Brazil | pt_BR |
| e-ISSN | 1678-8060 | |
| xmlui.metadata.dc.subject.ods | 05 Igualdade de gênero | |
