Sheep Blow‐fly Investigations

Summary An investigation has been made of the effect of temperature upon the time required for the development of the ovaries in the sheep maggot fly. It has been shown that two meat meals are essential for the development of mature eggs in the ovaries. This applies also to the further production of eggs after opposition. Neither plant materials nor animal excreta can replace meat in the diet of the female fly if eggs are to develop in the ovaries. Various products of putrehction stimulate gravid females to opposite, but these substances do not attract flies from a distance.