Sarcophagidae (2)

Question 1

What are the hosts?

Answer 1

Any animal

Question 2

Describe adults

Answer 2

Twice the size of house fly

Question 3

Describe third instars

Answer 3

Larger than housefly maggots

Question 4

Explain the life cycle

Answer 4

More than 3000 species - each with preferred tissue decomposition
stage for deposit of eggs or larvae

Sarcophagids lay 1st stage larvae in sores, wounds, decomposing areas, necrotic areas, wool soiled with urine/feces

Larvae develop to 3rd stage - leave host

Pupate in soil - overwintering stage

Adult - nonparasitic

Question 5

What are the sites of infestation?

Answer 5

Skin (decomposing wounds)

Soiled wool

Wherever there is blood or other body secretions that attract female flies to lay 1st instars

Question 6

Describe the Pathogenesis

Answer 6

Bacterial growth

Odors from decomposing tissues - attract flies

Wet wool (bacteria - odors) on sheep - attract flies
     - Sheep become restless, kick/bite at flies

Lose condition, even die

Question 7

How do you diagnose?

Answer 7

Fly identification

Based on clinical signs

Recognize maggots

Question 8

How do you treat and prevent?

Answer 8

Treat wounds

Avoid “decomposition” conditions

Prevent situations that attract flies

 - Sanitation 
 - Improved husbandry
 - Tail docking

Question 9

What is the common name?

Answer 9

Flesh flies