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Ectoparasites - Flies
Terms in this set (11)
The only fly of concern for small animals in Manitoba is Cuterebra, whose maggots will crawl into the subcutaneous skin layers of dogs and cats. It is more commonly called a grub.
Botfly or warble fly
The Cuterebra is a bee-like species of fly that lays its eggs near the entrances to outdoor animal dens or burrows. These flies neither feed nor bite mammals. The eggs stick to the fur of any animal that brushes against them and they hatch into larvae, which penetrate the skin, enter the body through a natural opening, or are ingested when the animal is grooming. The larva usually migrates to an area just under the skin on the head or neck of the animal. It then matures under the skin for about 3 weeks, and creates a cyst, called a warble, that can be as large as a marble. The larva creates a tiny hole to the skin surface in order to breathe. Roughly 30 days later, they exit the animal host, pupate on the ground, and become an adult fly.
Larva burrow into skin and form subcutaneous pocket. Often around the face or head.
Host - often dogs, cats, ferrets.
Direct contact with larvae.
Depends on where the larva is located. Often a SubQ lump or swelling (warble). Usually with a small hole in a dip in the swelling.
Clinical signs. Definitive diagnosis is made by finding and identifying a larva.
Surgical removal of the intact larva. It is very important to NOT squeeze the skin in hopes of getting the larva out. This can cause the larva to break apart, and cause the host animal to have a chronic infection or perhaps an anaphylactic reaction. The "pocket" that was formed around the larva is cleaned and flushed, and a topical antibiotic ointment may be prescribed. The thickening of the skin takes considerable time to resolve.
Fly control and sanitation if pet is outside.
THIS SET IS OFTEN IN FOLDERS WITH...
Ectoparasites - Lice
Internal Parasites - Nematodes (Roundworms)
Diagnosis of Parasites
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