LIFE CYCLES Be able to define/identify the following on life cycles:

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Presentation transcript:

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

DIRECT LIFE CYLE

DIRECT LIFE CYCLE

INDIRECT LIFE CYCLE

INDIRECT LIFE CYCLE

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

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

INDIRECT LIFE CYCLE

BOTH LIFE CYCLES

BOTH LIFE CYCLES

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