Effects of physico-chemical factors on the infection of mice with Schistosoma japonicum and S. mekongi cercariae.
Southeast Asian J Trop Med Public Health
;
1984 Jun; 15(2): 254-60
Artigo
em Inglês
| IMSEAR
| ID: sea-32952
ABSTRACT
The three physico-chemical characteristics of water tested-pH, temperature and salinity were found to affect the infection of mice by cercariae of S. japonicum and S. mekongi. For both species of schistosomes, the range of optimal pH that showed highest infection and worm recovery rates was between 5.4-7.4 and decreased as the pH increased. Cercariae exposed to temperatures between 15 degrees-30 degrees C showed the highest infection and worm recovery rates. As temperature decreased or increased, the infection and worm recovery rates decreased. Sodium chloride concentration at low level (0.5-200 ppm) did not have great effect on the infection and worm recovery rates. The infection and worm recovery rates decreased as salinity increased. High sodium chloride concentration at 3200 ppm for S. mekongi cercariae and at 6400 ppm for S. japonicum cereariae inhibited cercarial penetration and no infection occurred.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Concentração Osmolar
/
Schistosoma
/
Schistosoma japonicum
/
Esquistossomose
/
Especificidade da Espécie
/
Temperatura
/
Água
/
Cloreto de Sódio
/
Concentração de Íons de Hidrogênio
/
Larva
Idioma:
Inglês
Revista:
Southeast Asian J Trop Med Public Health
Ano de publicação:
1984
Tipo de documento:
Artigo
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