Influence of a Juvenile Hormone Analog on Reproduction of Normal and Sterilized Adult Horn Flies (Diptera: Muscidae)

Abstract

Haematobia irritans (L.), given the juvenile hormone analog methoprene at a concentration of 1 ppm in their blood diet, produced 2-fold as many eggs per day as controls; 3-fold as many eggs per day were produced by flies fed at a concentration of 10 ppm methoprene compared to controls. Flies fed methoprene began oviposition ca. 10 h sooner than normal. However, eggs from treated females were 10% less viable than normal eggs. The effect of dietary methoprene on survival was small and fertility was not recovered in radiosterilized females.