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60 Cards in this Set
- Front
- Back
Who is a nematode? |
Round, whips, and hooks |
|
Normal larval migration places |
1. Mucosal 2. Tracheal 3. Somatic |
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Migran locations |
1. Cutaneous 2. Ocular 3. Visceral |
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Pre parasitic egg life stages |
L1-->L3 |
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Parasitic in definitive host life stages |
L3-->L5 |
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Ascarid location of adult |
Small intestine of host |
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What kind of specificity do ascarids have? |
High specificity |
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Paratenic host |
A host in which the parasite may grow and/or multiply, but the development is not required for the life cycle (alternate host) |
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What stage of life is the infective stage? |
L3 |
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Toxocara canis host |
Canids (puppies & dams) |
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Toxocara adult size and life span |
20cm and 4 months |
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Toxocara ova size |
>70micrometers |
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Description of Toxocara ova |
Round w/ pitted shell dark abd relatively large |
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Prepatent period |
Time from ingestion to adult |
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Toxocara canis ova is ingested through? |
Tracheal migration, somatic migration, and paratenic host(rodent) |
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Who does tracheal migration of toxocara canis affect? |
Pups<3 months old |
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Toxocara canis somatic migration happens in who? |
>3 months old (adult dogs) |
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Toxocara canis can be passed mother to puppies via ? |
Transmammary and transplacental |
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How do the dormant toxocara canis larva get into the puppies transplacentally? |
Migrate from placenta to the fetal liver (~day 42) |
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How do the toxocara canis larva get into the puppies transmammary? |
Larva shed in milk by day 5 |
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Puppy toxocara canis pathology |
ADR, pot belly, dull hair coat, small |
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Puppy toxocara canis heavy infection pathology |
Diarrhea, dehydration, obstruction, serve versions of regular pathology for toxocara canis |
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Zoonosis possibilities of toxocara canis |
By ingestion, inhalation, visceral and ocular larval migrans |
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Toxocara cati |
Cat round work |
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Toxocara canis |
Dog round worm |
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Toxocara cati host |
Felids and canids |
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Toxocara cati adult size and life span
|
10cm 4 months |
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Toxocara cati ova description
|
Round with pitted shell dark and a little smaller than toxocara canis |
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Prepatent period of Toxocara cati |
8 weeks |
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Prepatent period of toxocara canis |
3-5 weeks |
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Toxocara cati when do they use tracheal migration
|
Throughout lifespan of host |
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Toxocara cati somatic migration use
|
Used very little |
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Toxocara cati mucosal migration use
|
Used by mature non pregnant adults |
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What is the paratenic host to toxocara cati and canis? |
Rodents |
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does transplacental infection occur in toxocara cati?
|
Does not occur in cats |
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does transmammary infection occur in toxocara cati?
|
Yes very importiant route in kittens |
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Toxocara cati pathology |
Similar to canis, pot belly, dull hair coat, small |
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Toxascaris leonina host |
Dogs and cats |
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Toxascaris leonina ova description
|
Lighter in color, less pitting on shell, smaller than toxocara |
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Toxascaris leonina Prepatent period
|
8-10 weeks |
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Does transplacental infection occur in Toxascaris leonina ?
|
Does not occur in Toxascaris leonina |
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Does transmammary infection occur in Toxascaris leonina? |
Does not happen in Toxascaris leonina |
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Toxascaris leonina Pathology
|
No subclinical signs |
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Toxascaris leonina Zoonotic possibility?
|
Not zoonotic |
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Ascaris suum host |
Swine |
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Ascaris suum adult size
|
30cm (thicker) |
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Ascaris suum Ova description
|
More oval, yellow to brown, smaller with a knobby shell |
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How is Ascaris suum transferred to young? |
Transmitted when ova stick to skin of the mammary gland (sow to piglet) |
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Ascaris suum Environmental aspect?
|
Ova infective in soil for several years |
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Milk spots |
Fibrous legions seen in liver as a result of migration |
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Thumps |
Audible exhalations due to lung damage from migration |
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Parascaris equorum host |
Horse |
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Parascaris equorum occurs in horses of what age?
|
Usually only in horses under 6 months |
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Does Parascaris equorum have the ability to infect through transplancental or transmammary transmission?
|
No, not in horses |
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How do foals get Parascaris equorum? |
Transmitted when ova stick to skin of mammary gland, buckets, stalls ect (foals lick these surfaces) |
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Baylisascaris procyonis definitive host |
Raccoon |
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Baylisascaris procyonis Alternative host
|
Human, dogs, woodchucks, rabbits, birds, ect |
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Baylisascaris procyonis Pathology
|
Goes to the nervous system in alternative hosts (very serious, fatal) |
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How to kill Baylisascaris procyonis eggs?
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Only way to kill eggs is by burning |
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Where is Baylisascaris procyonis found ? |
Found everywhere raccoons are |