1. LIFE CYCLES Be able to define/identify the following on life cycles:
Indirect life cycle
Direct life cycle
Definitive host
Intermediate host
vector

4. DIRECT LIFE CYLE

5. DIRECT LIFE CYCLE

6. INDIRECT LIFE CYCLE

7. INDIRECT LIFE CYCLE

8. Harmful Effects of Parasites
Blood loss
Hookworms, fleas
Hypersensitivity (allergy)
Flea allergy dermatitis (FAD)
15% of dogs & cats
Heartworms? Eosinophilia as high as 20%
Toxicity
Maggots

9. Harmful Effects of Parasites
Secondary invasion of pathogens
Bacterial infections after primary disease has begun
Example – generalized demodectic mange
Disease transmission
Parasite vectors – carry disease to host
Worry
Horse flies in the barn

10. INDIRECT LIFE CYCLE

11. BOTH LIFE CYCLES

12. BOTH LIFE CYCLES