Larval dipterans may develop in the subcutaneous tissues of the skin or organs of many domestic animals, producing a condition known as myiasis. There are two types of myiases based on extent of host dependence. In facultative myiasis Facultative Myiasis-producing Flies of Animals Facultative myiasis-producing flies of veterinary importance covered in other chapters include Gasterophilus spp in horses, Oestrus ovis in sheep, and Cuterebra spp in dogs... read more , the fly larvae are usually free-living; however, in certain circumstances, these larvae can adapt themselves to a parasitic dependence on a host. In obligatory myiasis Obligatory Myiasis-producing Flies of Animals Many dipteran flies produce larvae that must lead a parasitic existence and result in obligatory myiasis. Only one fly in North America, Cochliomyia hominivorax, is a primary invader... read more , the fly larvae are completely parasitic, ie, they depend on the host to complete the life cycle. Without the host, obligatory parasites will die.
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Also see pet health content regarding flies and mosquitoes of dogs Flies and Mosquitoes of Dogs Flies are winged insects that are usually just an annoyance, but they can transmit disease and cause problems in animals. They belong to a large, complex order of insects called Diptera. Flies... read more , cats Flies and Mosquitoes of Cats Flies are winged insects that are usually just an annoyance, but they can transmit disease. They belong to a large, complex order of insects called Diptera. Flies vary greatly in size, food... read more , and horses Flies and Mosquitoes of Horses Flies are winged insects that are usually just an annoyance. However, they can transmit disease and cause problems in animals. They belong to a large, complex order of insects called Diptera... read more .
