A large fly which lays its eggs on the legs of mammals such as cattle and horses. The larvae migrate internally to the host’s back, where they form a small lump with a breathing hole, dropping to the ground later when fully grown.
- Genus Hypoderma, family Oestridae: several species, including the widespread H. bovis.
- The warble fly lays eggs on cattle in the Spring and Summer, and the larvae enter the animal to migrate through it.
- He says Britain's mad cow outbreak can be traced to a mid-1980s government policy requiring farmers to apply high doses of a pesticide called Phosmet to their cows to kill warble fly larvae.
- His research began by linking outbreaks of the disease with the compulsory application of organophosphate pesticides, used to prevent warble fly infestation in cattle.
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