6b – Lungworms (Non-GI Nematodes) Flashcards
1
Q
Aelurostrongylus abstrusus (lung parenchyma): life cycle
A
- Adults in lungs produce L1 (feces of BAL)
- L1 into snail or slugs -> to L3
- Paratenic hosts (rodent, frogs, birds) or directly into host
**more likely in cats
2
Q
Aelurostrongylus abstrusus (lung parenchyma): feline lungs
A
- Coughing
- Infections in lungs
3
Q
Aelurostrongylus abstrusus (lung parenchyma): ecology/epidemiology
A
- Cats in BC and Atlantic Canada
- Often asymptomatic (may cause coughing, even death)
- ML, fenbendazole: treatment
4
Q
Crenosoma vulpis:
A
- Dogs and wild canids as DH
- Adults live in bronchi/bronchioles
- Shed larvae in feces
- L1-L3 in gastropod IH
5
Q
Crenosoma vulpis: diagnosis
A
- Baermann
- BAL
6
Q
Crenosoma vulpis: treatment
A
- ML
- Fenbendazole
7
Q
FIlaroides osleri
A
- Airways (nodules)
- Wild canids and dogs who hunt them
- *can diagnose via bronchoscopy
8
Q
FIlaroides hirthi
A
- Lung parenchyma
- Dogs in kennels (often immunosuppressed)
9
Q
FIlaroides osleri and hirthi: lifecycle
A
- DIRECT
- L1 shed directly into lungs and coughed up
- Some internal autoinfection possible
10
Q
Filaroides osleri: pathogenesis
A
- Often asymptomatic
- Pathognomic cough (triggered by exercise and cold)
- Nodules may obstruct air, cyanosis and collapse in pups
11
Q
Filaroides hirthi: pathogenesis
A
- Asymptomatic
- Clinical only in immunosuppressed
- Occasionally fatal bronchopneumonia
12
Q
Management of Filaroides
A
- Decontaminate environment
- Break vertical transmission (hand rear pups)
- Repeated treatments with ML or fenbendazole
13
Q
Capillaria spp.
A
- Direct or indirect life cycles (earthworm=IH)
- Eggs are shed stage (have polar plugs)
- L1 develops in eggs=infective stage
14
Q
Capillaria aerophilia
A
- Dogs and CATS, wild canids
- Adults live in trachea and bronchi
- Shed eggs in FECES
15
Q
Capillaria boehmi
A
- Dogs and wild canids
- Adults live in nasal and sinus cavities
- Shed eggs in FECES
