Draschia megastroma/ Habronema spp/ Habronema majus

Question 1

class

Answer 1

nematoda

Question 2

order

Answer 2

spirurida

Question 3

hosts

Answer 3

all horse species

Question 4

what kind of nematode is this?

Answer 4

stomach nematode

Question 5

size of D. megastoma adult

Answer 5

13mm

Question 6

what kind of buccal cavity fo Draschia megatoma have?

Answer 6

funnel shaped buccal cavity

Question 7

What is the size of Harbronema spp?

Answer 7

22-25mm

Question 8

what kind of buccal cavity do the harbronema spp. have?

Answer 8

cylindrical buccal cavity

Question 9

are these parasites eggs thin or thick shelled?

Answer 9

thin

Question 10

is the life cycle direct or indirect?

Answer 10

indirect

Question 11

what is the intermediate host for Draschia megatoma and Habronema muscae

Answer 11

musca domestica

Question 12

what is the intermediate host for the habronema majus?

Answer 12

musca spp, stomoxys calcitrans

Question 13

what animal is the intermediate host for all these species?

Answer 13

flies

Question 14

what is the site of infection

Answer 14

adults and larvae in stomach

L3 also in skin

Question 15

pathogenesis

Answer 15

larvae: cutaneous habronemiasis and cutaneous drashiasis, conjunctivitis
adults: nodules in stomach

Question 16

clinical signs

Answer 16

larvae: “summer sores”
adults: gastritis

Question 17

diagnosis

Answer 17

recovering of eggs in feces, difficult

larvae in skin scraping

Question 18

treatment

Answer 18

MCL’s, fly control

Question 19

identification of eggs

Answer 19

thin shelled and larvated (paperclip) eggs

eggs collapse in feces

Question 20

size of eggs

Answer 20

40-55 x 8-16 micrometers

Question 21

what is the infective stage?

Answer 21

L3 larvae- inside of fly. fly can deposit larvae on host or the fly may be eaten by the host

Question 22

life cycle is synchronized with ____

Answer 22

flies