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Flashcards in EXAM 1 Deck (15)
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1

Class Nematoda inlcludes...

  • Roundworms 
  • Hookworms 
  • Whipworms 
  • Threadworms

2

What is the common name for Spirocerca Lupi?

Esophageal Worm 

3

What are the hosts for Spirocerca Lupi?

 

– Final: Dogs (wild canids)

– IH: Dung beetle
– PH: Chickens, birds, lizards 

 

4

How do you ID Spirocerca Lupi Adults?

RED worms 

5

ID:  Spirocerca Lupi Eggs

Small and elongated 

30-35 um

L1 

 

6

Life Cycle of Spirocerca Lupi

 

- Indirect

-  ELLLLLA (L3 in dung beetle is infective)

-  Larvae migrate to thoracic
aorta then migrate to esophagus
3 months later (PPP = 6 month 

 

 

7

 

What is a prepatent period (PPP)? 

 

 

Time from infection until the adult parasite is producing eggs, larvae or other immature forms. 

 

8

Sites of Infection: Spirocerca Lupi

 


 

–  Adults in granulomas in esophagus and stomach

–  Larvae in wall of aorta 

 

 

9

 


 

Pathogenesis/ Lesions: 

Spirocerca Lupi

 

 


 

–  Larvae scar the aorta

–  Clinical signs from granulomas (regurg, dysphagia, etc)

–  Osteosarcoma

–  Osteopathy of long bones

–  Spondylosis of thoracic vertebrae 

 

 

10

Clinical Signs: Spirocerca Lupi

 


 

–  Regurgitation

–  Dysphagia (trouble swallowing)

–  Emaciation

–  Loss of condition 

 

 

11

Diagnosis: Spirocerca Lupi

 


 

– Eggs sometimes difficult to find in feces/ vomitus 

 

 

12

Treatment: Spirocerca Lupi

Macrocyclic Lactones 

13

Common Name: 

Physaloptera spp 

Stomach Worm 

14

Hosts: Physaloptera spp

 


 

–  Final: Dogs/ Cats

–  IH: Beetles/ Cockroaches

–  PH: Birds/ Snakes 

 

 

15