Nematodes Flashcards

0
Q

Where does toxocara canis live

A

In the small intestine, also sometimes in the lungs

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1
Q

Describe the physical appearance of Toxocara Canis

A

Spaghetti

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2
Q

What can happen to small breeds when they have a lot of Toxocara canis

A

Can cause obstruction

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3
Q

How do Toxocara canis inhabit the small intestine

A

They are not attached to the intestine but rather have an undulating swim

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4
Q

How long do Toxocara canis eggs lay dormant in the environment

A

2-5weeks

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5
Q

What are some key features of nematodes

A

Large-size variety, have a body cavity, have a digestive track including rectum, have reproductive organs

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6
Q

What type of eggs are Toxocara Cati

A

Oviparous

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7
Q

What type of eggs are ancylostoma caninum

A

Oviparous

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8
Q

What type of eggs are strongyloides westeri

A

Ovoviviparous

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9
Q

What type of eggs are capillaria

A

Oviparous

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10
Q

If a nematode produces larva it is said to be what

A

Lariparous

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11
Q

Describe the direct life cycle for nematodes

A

Hello three is infective for definitive host. L4 and L5 develop in definitive host. L5 is a young adult nematode. L6 is an adult that lays eggs

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12
Q

Describe the indirect lifecycle for nematode

A

In the intermediate host L1 L2 and L3 stages occur. Ingestion of the intermediate host where L4 and L5 develop in the definitive host

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13
Q

What are the symptoms of spirocerca lupi

A

Obstruction

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14
Q

What are the symptoms of physaloptera

A

Vomiting

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15
Q

Vomiting and feces of spirocerca and physaloptera look like what

16
Q

What is the PPP for Toxocara canis

A

21-35 days

17
Q

What is the PPP for Toxocara Cati

18
Q

What is the PPP for Toxocara leonina

A

8-10 weeks

19
Q

What can ancylostoma, tubaeforme, braziliense and uncinaria cause due to feeding on blood

20
Q

What do strongyloides cause

21
Q

How is strongyloides transmitted

A

Skin and milk.

22
Q

what is special about strongyloides

A

there are no males and eggs hatch in intestine, L1 released in feces and L3 penetrates skin

23
Q

How is trichuris vulpis transmitted

A

By ingestion

24
What is special about trichuris vulpis
Eggs are passed every 3 days and they are very heavy so they don't float well
25
What is aelurostrongylus abstrusus
Feline lungworm that causes nodules in alveolar ducts. Especially in fiv/felv cars.
26
Where do aelurostrongylus hatch
In the lung and they are coughed up and swallowed. L1 is in feces.
27
What is the intermediate host for aelurostrongylus
Snails and slugs (L1-L3)
28
What are the paratenic hosts for aelurostrongylus
Rodents, birds, amphibians, reptiles
29
What is the baermann test used for
Diagnosing feline lugworm aelurostrongylus
30
What is filaroides olseri, hirthi and milksi
Canine lungworm. In trachea, bronchioles and lungs. Causes nodules and airway obstruction.
31
Describe the transmission of canine lungworm
Ingestion of L1 from Dam to puppies. No outside development required
32
Describe Capillaria aerophilia
In trachea and bronchi. Eggs are coughed up and swallowed
33
How is diotophyma renale transmitted
By infective larva in annelid. Diagnosed by urine sediment
34
What is dracunculus insignis
Guinea worm. From ingestion of intermediate host
35
What is thelazia californiensis
In conjunctival sac and lacrimal canal. From intermediate host, the face fly.