Nematodes

Question 1

True/False: Nematodes will only ever reproduce sexually

Answer 1

True

Question 2

Describe the basic life cycle of Nematodes:

Answer 2

Egg to L1 to L2 to L3 to L4 to adult

Question 3

True/False: Nematodes are always non-migratory

Answer 3

False- nematodes can be either migratory or non-migratory in their life cycles

Question 4

What location are strongyloides normally found within the host?

Answer 4

Found in the small intestine and the caecum within poultry

Question 5

What is unique about the life cycle of the strongyloides?

Answer 5

Alternate between a parasitic and a free living stage in their life cycles

Question 6

Name the genus that this egg is derived from:

Answer 6

Stronyloides

Question 7

Are the eggs from the order Rhabdita normally embryonated or unembroyonated?

Answer 7

Normally embryonated

Question 8

What is the colliqual names for trichostrongylus and haemonchus species?

Answer 8

Black scour worm

Question 9

What is a distinguishing features of the trichostrongylus species?

Answer 9

A prominent excretory pore

Question 10

What site does the black scour worm normally occupy?

Answer 10

Small intestine

Question 11

What are some symptoms that are generally associated with the black scours worm?

Answer 11

Black scours

Question 12

Name the species that is shown below:

Answer 12

Trichostrongylus

Question 13

Name the species that is shown below:

Answer 13

Trichostrongylus

Question 14

What species is typically infected with hamonchus and what site does it occupy?

Answer 14

Ruminants are normally infected with this parasite and it normally occupies the small intestine

Question 15

What is a symptom associated with haemonchus?

Answer 15

Heavy and rapid weight loss occurs

Question 16

Name the species that is shown below:

Answer 16

Haemonchus

Question 17

Name the parasite that is pictured below:

Answer 17

Ostertagia

Question 18

Name the parasite that is pictured below:

Answer 18

Cooperia

Question 19

Name a unique feature concerning the life cycle of the nematodirus worm:

Answer 19

life cycle developement to L3 stage occurs within the egg

Question 20

Name the parasite shown in the picture below:

Answer 20

Nematodirus species

Question 21

What is the main host of the ancylostoma canininum parasite?

Answer 21

The dog

Question 22

What is the site of the ancylostoma caninum?

Answer 22

small intestine

Question 23

What is the life cycle of the ancylostoma caninum parasite?

Answer 23

Follow the basic life cycle of the nematoda, it can be transmitted transmarilary at L3 stage, the L3 stage normally migrates to the muslce in L3 stage to return to the small intestien by stage L4. Paratenic hosts can be involved.

Question 24

Name the parasite that is pictured below:

Answer 24

ancylostoma caninum

Question 25

What is the host of the species found in superfamily: strongyloidea, family: strongylidae?

Answer 25

horses and donkeys

Question 26

What site do the strongyles of horses occupy?

Answer 26

caecum and the colon

Question 27

What is a unique feauture of the life cycle of the strongyles of horses?

Answer 27

extensive tissue migration occurs

Question 28

What is the host of the chabertia ovina?

Answer 28

ruminants and pigs

Question 29

What site does the chabertia ovina occupy?

Answer 29

caecum and colon

Question 30

What is a unique feature of the life cycle of chabertia ovina?

Answer 30

migration to the tissue mucosa occurs.

Question 31

What is the name of the parasite pictured below?

Answer 31

Chaberta ovina

Question 32

What is the host of the parasite stephanurus dentatus?

Answer 32

pig

Question 33

What site does stephanurus dentatus occupy?

Answer 33

kidney and the perirenal tissues

Question 34

What is the life cycle of stephanurus dentatus?

Answer 34

Ingested as L3 in the gut, then migrates to the liver as L4 then becomes an adult in the kidney

Question 35

Name the parasite that is shown below:

Answer 35

Stephanurus dentatus

Question 36

Name a nematode that occupies the trachea of poultry:

Answer 36

Syngamus trachea

Question 37

What is the host of metastrongylus species?

Answer 37

the pig

Question 38

What site does the metastrongylus parasite occupy?

Answer 38

Bronchi and bronchioles

Question 39

What is the intermediate host that is involved in the cycle of the metastrongylus?

Answer 39

earthworm

Question 40

Name the parasite shown below:

Answer 40

Metastrongylus

Question 41

What is the host of the parasite toxocara canis?

Answer 41

the dog

Question 42

What site does toxocara canis occupy?

Answer 42

small intestine

Question 43

Name some unique features of the life cycle of the toxocara canis parasite:

Answer 43

- complex/paratenic hosts - somatic/tracheal migration - prenatal/perinatal infection

Question 44

Name the species from which the following eggs came from:

Answer 44

Toxocara canis

Question 45

What is the host of ascaris suum?

Answer 45

pig

Question 46

What site does ascaris suum occupy?

Answer 46

small intestine

Question 47

What is the life cycle involved in ascaris suum?

Answer 47

- direct - somatic migration (pre-patent period of about 2 months)

Question 48

Name the parasite that is pictured below:

Answer 48

Ascaris Suum

Question 49

What is the host of aniskas?

Answer 49

toothed whale

Question 50

What is the site occupiedby aniskas?

Answer 50

stomach

Question 51

What is the life cycle that is involved in aniskas?

Answer 51

- indirect - krill - intermediate host

Question 52

Can humans become infected by eating fish that are infected with the aniskas parasite?

Answer 52

Yes

Question 53

What is the host of ascardida galli

Answer 53

chicken

Question 54

What is the site of ascaridia galli?

Answer 54

small intestine

Question 55

What is the host of oxyuris equi?

Answer 55

horses and donkeys

Question 56

What site does Oxyuris equi occupy?

Answer 56

caecum, colon, rectum

Question 57

Name the parasite that is pictured below:

Answer 57

Oxyuris Equi

Question 58

What is the main host of habronema and draschia?

Answer 58

horses and donkeys

Question 59

What site to habronema and draschia occupy?

Answer 59

stomach

Question 60

What is the intermediate host that is involved in the life cycle of habronema and draschia?

Answer 60

Muscid fly

Question 61

Name the parasite pictured in the images below:

Answer 61

Habronema/Draschia

Question 62

What is the host of the parasite Spirocerca Lupi?

Answer 62

dogs

Question 63

What is the site of the parasite Spirocerca lupi?

Answer 63

oesphagus and the stomach

Question 64

What vector is involved in the life of spircerca lupi?

Answer 64

beetle

Question 65

Name the parasite that is shown below:

Answer 65

Spirocerca lupi

Question 66

What is the host of the parasite dirofiliria immitis?

Answer 66

dogs (cats and humans)

Question 67

What is the site of dirofiliria immits?

Answer 67

cardiovascular system

Question 68

What is the name of the vector involved as an intermediate host of the dirofiliria life cycle?

Answer 68

mosquitio

Question 69

What is the host of trichenella spiralis?

Answer 69

most mammals

Question 70

What is the site of trichenella spiralis?

Answer 70

small intestine (but larve stage is able to remain within the muscle for very long periods of time)

Question 71

Briefly describe the life cycle that is invovled in the trichenella spiralis life cycle:

Answer 71

- direct life cycle - no free living stage - encapsulated L1 long lived within the muscle

Question 72

Name the parasite that is shown below:

Answer 72

Trichenella Spiralis

Question 73

What is the host of the trichurus species?

Answer 73

mammals

Question 74

What is the site of the trichurus species?

Answer 74

large intestine

Question 75

What species does this egg come from?

Answer 75

Trichuris