Exam III - Nematodirus spp

Question 1

who is the host for Nematodirus spp.?

Answer 1

sheep

Question 2

what is a defining charateristic od the female adult & egg morphology?

Answer 2

a spine on the tip of her tail

eggs are very large ~130um

Question 3

what is the common name for Nematodirus spp.?

Answer 3

the long neck bankrupt worm

Question 4

what is the infective stage of Nematodirus spp.?

Answer 4

L3

• development to L3 is done in the egg b4 hatching

Question 5

Nematodirus batus requires a _____-______ period b4 hatching which results in a large pasture contamination in the spring for new grazing lambs.

Answer 5

freeze-thaw

Question 6

Nematodirus batus CS’s are atributed to the Le multing to the L4 in the intestinal mucosa destroying the vili and reducing the absorptive ability of the GI resulting in diarrhea and dehydration. so the lambs will be found crowding around the ________ and not grazing with the adults.

Answer 6

drinking places

Question 7

the principle pathogenic disorder of Nematodirus batus is attributed to the ______ stage of the parasite.

Answer 7

larval

Question 8

what is the PPP of Nematodirus spp?

Answer 8

3 weeks