7. parasite identification/review

Question 1

Answer 1

ostertagia ostertagi

Question 2

Answer 2

haemonchus contortus

Question 3

Answer 3

nematodirus spp

Question 4

Answer 4

nematodirus battus

Question 5

Answer 5

oesophagostomum radiatum

Question 6

Answer 6

oesophagostomum radiatum adult

Question 7

Answer 7

ascaris suum

Question 8

Answer 8

fasciola hepatica

Question 9

Answer 9

fascioloides magna

Question 10

Answer 10

dicrocoelium dendriticum

liver fluke

Question 11

Answer 11

taenia spp

Question 12

Answer 12

dipylidium caninum

Question 13

Answer 13

echinococcus

Question 14

Answer 14

toxocara canis

Question 15

Answer 15

toxocara leonia

Question 16

Answer 16

uncinaria stenocephala

Question 17

Answer 17

trichuris vulpis

Question 18

Answer 18

gasterophilus larvae

Question 19

Answer 19

habronema spp

Question 20

Answer 20

parascaris equorum

Question 21

Answer 21

strongyloides westeri

Question 22

Answer 22

Anoplocephala perfoliata

equine tapeworm

Question 23

Answer 23

oxyuris equi
D shaped

equine pinworm

Question 24

Answer 24

strongylus spp

morphologically identical to trichostrongylus axei

Question 25

Answer 25

capillaria spp

Question 26

Answer 26

ascaridia galli

Question 27

Answer 27

heterakis gallinarum

Question 28

What is the intermediate host for Fasciola hepatica?

Answer 28

snail: lymnaea truncatula

Question 29

Liver Trematodes have different stages in their lifecycle. At one of the stages of it’s life, the parasite is very vulnerable and can die within 24 hours if not in the correct environment. Identify the name of this stage of the parasite’s lifecycle using the picture below.

Answer 29

cercaria

Question 30

In which of the following species are eggs passed in the faeces during a fascioloidosis infection?

Answer 30

deer

Question 31

outline the sequence of development for a typical fasciola

Answer 31

Egg –> metacercaria –> sporocyst and redia –> cercaria –> miracidium –> adult

Question 32

A pregnant woman with a house cat shouldn’t clean the litter box to avoid catching which disease?

Answer 32

toxoplasmosis

Question 33

What lifecycle does Toxocara canis follow?

Answer 33

a combo of direct and indirect

Question 34

Q11. What parasite do you expect this to be based on the information

Answer 34

Nematodirus battus

Question 35

You have found something on the faecal sample, identify what it is?

Answer 35

nematode egg

Question 36

how should a farmer prevent N battus infection

Answer 36

• rotational grazing
• dont keep older ewes with lambs
• deworm pregnant ewes beofre and after lambing

Question 37

Which equine parasite would most likely be associated with this ‘summer sore’?

Answer 37

habronema

Question 38

What parasite is characterised by the white/yellow sticky eggs on the legs of horses?

Answer 38

gasterophillus spp

Question 39

Answer 39

giardia

Question 40

Answer 40

hookworm
- thin shelled, transparent

Question 41

Answer 41

dipylidium caninum

Question 42

Clinical haemonchosis in lambs most commonly includes:

Answer 42

anaemia and hypoproteinaemia

Question 43

why does bottlejaw occur

Answer 43

loss of protein and oedema

Question 44

In utero infection can take place in which of the following parasites?

Answer 44

toxocara canis

Question 45

type 1 ostertagiosis occurs in young or old animals

Answer 45

young animals

Question 46

Hypobiosis is a mechanism developed by some nematode species to :

Answer 46

ensure survival during harsh weather

Question 47

which of the wollowing parasites is a serious infection in game birds

Answer 47

trichostrongylus tenius

Question 48

Damage caused by oxyuris equi infection is caused by?

Answer 48

egg laying behaviour of the females

Question 49

What factor in the epidemiology of haemonchosis contributes MOST to contamination of the pasture early in the year, providing a source of parasites for young lambs?

Answer 49

spring rise where eggs overwinter on pasture and ewes shed eggs because periparturient relaxation of immunity

Question 50

Answer 50

anoplocephala perfoliata

Question 51

• A trichostrongyle nematode of ruminant
• Development of larvae from L1 to L3 occurs within the egg
• Its egg is very resistant in environment
• Causes severe diarrhoea and sudden death in lambs
• Can be identified from other gastrointestinal nematodes by it characteristically large sized eggs

what parasite am I

Answer 51

nematodirus battus