Abstract

With the use of circulating water systems to rear larvae, Simulium erythrocephalum and S. lineatum have been continuously maintained through to the F7 and F3 generations, respectively. Insemination rates of 100% were obtained for both species by the F2 generation. Using chick skin membranes and bovine blood, mean blood-feeding rates of 56 and 87% were achieved for S. lineatum and S. erythrocephalum, respectively. Mean egg production and egg fertility rates increased after the parental generation was produced. Mating trials were peformed to assess conditions for optimum insemination rates. A significant correlation between temperature and complete generation development period was observed.

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