parasites general

Question 1

animal harboring sexually mature parasite

Answer 1

definitive host

Question 2

animal used by the immature stages of the parasite to continue development

Answer 2

intermediate host

Question 3

animal serving as a transport host for immature stages of the parasite

Answer 3

paratenic host

Question 4

no development occurs in this type of host

Answer 4

paratenic host

Question 5

prepatent period

Answer 5

time elapsed between infection with parasite and when it reaches reproductive maturity

Question 6

3 ways internal parasites cause damage to the host animal

Answer 6

malnutrition - compete with host for ingested food (tapeworms, ascarids)

mechanical - destroy tissue when going thorugh the body, cause obstructions (hookworms, heartworms,ascarids)

blood loss - anemia (hookworms)

Question 7

how do anthelmentics kill parasites?

Answer 7

• affect the parasites CNS leading to death or paralysis
• some cause digestion of the parasite

Question 8

these animals are more resistant to parasitic infection

Answer 8

older animals