An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area
Small mammals are found naturally infected by Schistosoma mansoni, becoming a confounding factor for control programs of schistosomiasis in endemic areas. The aims of this study were: to investigate the infection rates by S. mansoni on the water-rat Nectomys squamipes during four years in endemic ar...
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| Format: | Article |
| Language: | English |
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Fundação Oswaldo Cruz (FIOCRUZ)
2006-10-01
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| Series: | Memorias do Instituto Oswaldo Cruz |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762006000900018 |
| _version_ | 1797715796064993280 |
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| author | Rosana Gentile Sócrates F Costa-Neto Margareth ML Gonçalves Simone T Bonecker Fabiano A Fernandes Juberlan S Garcia Magali G M Barreto Marisa S Soares Paulo S D'Andrea José M Peralta Luis Rey |
| author_facet | Rosana Gentile Sócrates F Costa-Neto Margareth ML Gonçalves Simone T Bonecker Fabiano A Fernandes Juberlan S Garcia Magali G M Barreto Marisa S Soares Paulo S D'Andrea José M Peralta Luis Rey |
| author_sort | Rosana Gentile |
| collection | DOAJ |
| description | Small mammals are found naturally infected by Schistosoma mansoni, becoming a confounding factor for control programs of schistosomiasis in endemic areas. The aims of this study were: to investigate the infection rates by S. mansoni on the water-rat Nectomys squamipes during four years in endemic areas of Sumidouro, state of Rio de Janeiro, using mark-recapture technique; to compare two diagnostic methods for schistosomiasis; and to evaluate the effects of the chemotherapy in the human infected population on the rodent infection rates. The rodent infection rates of S. mansoni increased when rodent population sizes were lower. Coprology and serology results presented the same trends along time and were correlated. Serology could detect recent infection, including the false negatives in the coprology. The chemotherapy in the humans could not interrupt the rodent infection. Rodents can increase the schistosomiaisis transmission where it already exists, they probably maintain the transmission cycle in the nature and can be considered as biological indicators of the transmission sites of this parasite since they are highly susceptible to infection. The water-rats may present different levels of importance in the transmission dynamics of S. mansoni infection cycle for each area, and can be considered important wild-reservoirs of this human disease. |
| first_indexed | 2024-03-12T08:12:02Z |
| format | Article |
| id | doaj.art-87df0775c5064fa496f7c4d019c9aff1 |
| institution | Directory Open Access Journal |
| issn | 0074-0276 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T08:12:02Z |
| publishDate | 2006-10-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-87df0775c5064fa496f7c4d019c9aff12023-09-02T19:06:44ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz0074-02761678-80602006-10-0110111111710.1590/S0074-02762006000900018An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic areaRosana GentileSócrates F Costa-NetoMargareth ML GonçalvesSimone T BoneckerFabiano A FernandesJuberlan S GarciaMagali G M BarretoMarisa S SoaresPaulo S D'AndreaJosé M PeraltaLuis ReySmall mammals are found naturally infected by Schistosoma mansoni, becoming a confounding factor for control programs of schistosomiasis in endemic areas. The aims of this study were: to investigate the infection rates by S. mansoni on the water-rat Nectomys squamipes during four years in endemic areas of Sumidouro, state of Rio de Janeiro, using mark-recapture technique; to compare two diagnostic methods for schistosomiasis; and to evaluate the effects of the chemotherapy in the human infected population on the rodent infection rates. The rodent infection rates of S. mansoni increased when rodent population sizes were lower. Coprology and serology results presented the same trends along time and were correlated. Serology could detect recent infection, including the false negatives in the coprology. The chemotherapy in the humans could not interrupt the rodent infection. Rodents can increase the schistosomiaisis transmission where it already exists, they probably maintain the transmission cycle in the nature and can be considered as biological indicators of the transmission sites of this parasite since they are highly susceptible to infection. The water-rats may present different levels of importance in the transmission dynamics of S. mansoni infection cycle for each area, and can be considered important wild-reservoirs of this human disease.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762006000900018diagnostic methodspopulation ecologyrodentsschistosomiasis |
| spellingShingle | Rosana Gentile Sócrates F Costa-Neto Margareth ML Gonçalves Simone T Bonecker Fabiano A Fernandes Juberlan S Garcia Magali G M Barreto Marisa S Soares Paulo S D'Andrea José M Peralta Luis Rey An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area Memorias do Instituto Oswaldo Cruz diagnostic methods population ecology rodents schistosomiasis |
| title | An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area |
| title_full | An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area |
| title_fullStr | An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area |
| title_full_unstemmed | An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area |
| title_short | An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area |
| title_sort | ecological field study of the water rat nectomys squamipes as a wild reservoir indicator of schistosoma mansoni transmission in an endemic area |
| topic | diagnostic methods population ecology rodents schistosomiasis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762006000900018 |
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