Exercise 13: Family Heterakidae

Question 1

Most common as well as the largest roundworm affecting domestic fowls

Answer 1

Ascaridia galli

Question 2

Occurs in small intestines of turkeys,fowls, ducks, geese

Answer 2

Ascaridia galli

Question 3

Occurs in ceca of fowls, turkeys, ducks, geese

Answer 3

Heterakis gallinae

Question 4

Also known as the cecal worm

Answer 4

H. gallinae

Question 5

Heterakis gallinae transmit what

Answer 5

Protozoan Histomonas meleagridis, causative agent of blackhead or infectious enterohepatitis of turkeys

Question 6

Occurs in cecum and colon of equines

Answer 6

Oxyuris equi

Question 7

Oxyuris equi distribution

Answer 7

Cosmopolitan distribution

Question 8

Short on O. equi

Answer 8

Males

Question 9

Grey or brown in color and have long, tapering tails

Answer 9

Mature females of Oxyuris equi

Question 10

White, slightly curved and have relatively short pointed tails

Answer 10

Young females of Oxyurid equi

Question 11

Oxyuris equi eggs

Answer 11

Ovoid, assymetrical and slightly flattened on one side, with a plug at one pole

Question 12

Eggs are not normally passed in feces

Answer 12

Oxyuris equi

Question 13

Oxyuris equi egg are laid in

Answer 13

Are laid in clusters in the perianal area, causing intense anal pruritus