Detalhes bibliográficos
| Ano de defesa: |
2010 |
| Autor(a) principal: |
Silva, Cleodon Teodósio da
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| Orientador(a): |
Santos, Roseli La Corte dos
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| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Sergipe
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| Programa de Pós-Graduação: |
Pós-Graduação em Ecologia e Conservação
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| Departamento: |
Não Informado pela instituição
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| País: |
BR
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| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
https://ri.ufs.br/handle/riufs/4443
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Resumo: |
Schistosomiasis is a serious public health problem in the Northeast of Brazil. In Sergipe, the highest incidences are recorded in agreste and coastline. In the semiarid region of Sergipe, information on the occurrence of Schistossoma mansoni and host snails are rare. This is an area of great importance due to the scarcity of water for most time of the year and use of public water tanks for all purposes. In this context, this study has aimed to characterize the environmental parameters, physical, chemical and biological agents associated with the genus Biomphalaria snails and their implications for water reservoirs of the semiarid of Sergipe. Samples were collected from July to September 2009. Initially, it was a pilot survey to determine the local occurrence of Biomphalaria. In these reservoirs the water was collected for analysis of physical and chemical parameters: temperature, pH, conductivity, turbidity, alkalinity, hardness, ammonia, nitrite, nitrate, chloride, sodium and calcium. It was also analyzed for colimetry. The snails collected were measured and weighed and analyzed for the rate of infection by cercariae. The only species of Biomphalaria registered in the semiarid of Sergipe was B. straminea which was identified in 27 water reservoirs among 62 surveyed. These species were found in the districts of Canindé de São Francisco, Gararu, N. Srª. da Glória, N. Srª. de Lourdes, Porto da Folha and Poço Redondo. B. straminea was found associated with other mollusks such as Melanoides tuberculatus, Pomacea spp., Drepanotrema ssp. and Physa spp. There was a correlation between the physicalchemical, conductivity, hardness, chloride, nitrite, sodium and calcium ions on the diameter and weight in water reservoirs surveyed and it was not identified any correlation between abundance and physico-chemical parameters. It was not found any specimen infected with S. mansoni, however, several types of cercariae were identified. All water reservoirs with presence of B. straminea presented contamination with fecal coliforms and used by the population, which indicates that the population, despite the low incidence of the disease, is submitted to the risk of contamination by S. mansoni. The results of analysis carried out in the semiarid areas of Sergipe showed that B. straminea is a specie extremely tolerant of the variability of physical-chemical, which makes difficult any measure of environmental control of the snails based only on the manipulation of ecological data. |
