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Schistosoma mansoni and Schistosoma haematobium: Differences in development

1981; Elsevier BV; Volume: 51; Issue: 1 Linguagem: Inglês

10.1016/0014-4894(81)90039-4

1090-2449

Craig S. Burden, John E. Ubelaker,

Research on Leishmaniasis Studies

Growth and maturation of the Puerto Rico strain of Schistosoma mansoni in mice and the Ghana strain of Schistosoma haematobium in hamsters were compared beginning 19 days after infection. In S. mansoni, optimum development was determined, with copulation first observed on Day 25, egg shell protein formation observed on Day 28, and oviposition occurring on Day 30. In infections of S. haematobium, copulation first occurred on Day 29. Egg shell proteins were first formed on Day 45, and egg production occurred on Day 60. Examination of unisexual and bisexual infections showed that maturation of the vitellaria can be more easily assessed by autofluorescence of the protein globules than by the traditional diazonium salt stains. Autofluorescence of living worms with mature vitellaria allows subsequent examination by electron microscopy, and therefore permits evaluation at a subcellular level.