nematoda exam 2

Question 1

What are the four superfamilies under the order strongylida

Answer 1

trichostrongyloidea, strongyloidea, ancylostomatoidea, metastrongyloidea

Question 2

most important ruminant helminth?

Answer 2

trichostrongyloidea (ostertagia ostertagi)

Question 3

indirect lifecycle superfamily?

Answer 3

metastrongyloidea

Question 4

What are the two types of trichostrongyles that are in the abomasum?

Answer 4

haemonchus and ostertagia

Question 5

PGE occurs in what superfamily?

Answer 5

truchostrongyloidea

Question 6

small ruminant important helminth? (barbers pole worm)

Answer 6

haemonchus contortus

Question 7

which helmith destroys the gastric gland which L4 migrates out

Answer 7

ostertagia ostertagi

Question 8

what is the pathogenic stage of haemonchus contortus?

Answer 8

adult. hematophagosis

Question 9

when you see a sudden death of a flock, what helminth should you think of?

Answer 9

haemonchus contortus

Question 10

what is type 1 and type 2 disease in the two abomasum trichostrongyles?

Answer 10

type 1 is continuous, type 2 hypobiosis: more severe and fatal

Question 11

any sheep or goat with anemia in grazing season is thought to have ______ until proven otherwise

Answer 11

haemonchus contortus

Question 12

the superfamily strongyles are important helminths for what species?

Answer 12

horses

Question 13

what helminths are plug feeders?

Answer 13

strongyles

Question 14

what are the two emerging patterns for cyanthostomins? (small strongyles)

Answer 14

drug treatment: killing off the adult worms in the intestine
seasonal changes
rapid emergence of larvae (type 2)

Question 15

what is the important large strongyle

Answer 15

strongylus vulgaris. Colic r-ship

Question 16

which molt in stronglyus vulgaris is amin pathogenic step

Answer 16

the molt from L4 to adult in the cranial mesentery artery. producing an aneurysm

Question 17

what superfamily is considered hookworms

Answer 17

ancylostomatoidea

Question 18

what is the scientific name for the most important canine hookworm in our region

Answer 18

ancylostoma caninum

Question 19

what type of strongylida can have a paratenic host?

Answer 19

ancylostoma caninum

Question 20

what are the five ways an adult hookworm can end up in the intestine

Answer 20

skin penetration, transmammary infection, ingestion of L3, larval leak, paratenic hosts

Question 21

feline hookworm?

Answer 21

ancylostoma tubaeforme

Question 22

two classifications under spirurida

Answer 22

filaroidea and non filaroidea

Question 23

what type of lifecycle does order spirurida have?

Answer 23

indirect lifecycle with arthropod as intermediate host

Question 24

dirofilaria immitis. definitive host? site of parasite

Answer 24

heartworm. dogs. pulmonary arteries

Question 25

three main clinical signs of dirofilaria immitis

Answer 25

chronic cough, dyspnea, decreased exercise tolerance

Question 26

what is wolbachia

Answer 26

bacteria with a symbiotic relationship to dirofilaria immitis (spirurida). the reason why we give doxy in the HWT

Question 27

habronema and Draschia. definitive host? intermediate host?

Answer 27

house fly. horses. nonfilaroidea. summer sore cutaneous granuloma in horse when in incorrect location

Question 28

physaloptera

Answer 28

wild animal. nonfilaroidea. spirurida. nonpath stomach parasite

Question 29

thelazia

Answer 29

eye worm. zoonotic

Question 30

what is unique about enoplida eggs

Answer 30

2 polar plugs, like a football. whipworm. larvae develop in egg until ingested

Question 31

Truchuris vulpis. what is the infective stage?

Answer 31

enoplida. whipworm in L.I. of dogs. embryonated egg

Question 32

PPP of trichuris vulpis

Answer 32

3 months. not usually a problem in young puppies becuase of this

Question 33

Trichinella. where are adults? importance?

Answer 33

enoplida. worms in S.I. of many mammals. assocation with pigs

Question 34

Oxyurida. what is unique about their eggs?

Answer 34

one polar plug, one flat side and one round side.

Question 35

oxyuris equi. order? reporduction

Answer 35

equine pinworm in oxyurida. female migrate to the anus, around perianal area and explode. no eggs in feces

Question 36

why is rhabditida wierd?

Answer 36

its animal genus is strongyloides.

Question 37

what is the name for rhabditida eggs?

Answer 37

strongyloides eggs. smaller than strongyles eggs

Question 38

which orders have adults in the large intestine?

Answer 38

oxyurida (pinworm), enoplida (whipworm)