Lungworm Flashcards
cause of dictyocaulosis verminous
d. vivparus
d. filaria
d. eckerti
d. arnfiedi
d. capreolus
d. cameli
another name for dictyocaulosis verminous
parasitic bronchitiis
morphology of dictyocaulosis verminous
3-8cm longs
slender
white
genital pore in middle of female
where are eggs hatched
within body
ovoviviparous
location of dictyocaulosis verminous
lumen of bronchi and trachea
life cycle of dictyocaulosis verminous
direct
PE1 of dictyocaulosis verminous
L1 –>L3 within 1-2 weeks
PE2 of dictyocaulosis verminous
L3–>po –> small intestine –> mesentrical lymphnode –> L4 –> thoracic duct –> v. cava cranialis –> lungs
where do preadults of dictyocaulosis verminous migrate
to lumen of larger bronchi and trachea
prepatent period of dictyocaulosis verminous
3-4 weeks
host of d. viviparus
cattle
deer
buffalo
camel
host of d. filaria
sheep
goat
deer, moufflon, wild small ru
host of d. eckerti
deer
host od d. arnfieldi
horse
donkey
host of d. camli
camel
host of d. capreolus
roe dee
moose
clincial signs of dictyocaulosis verminous
prepatent
tachypnoea
dsypnoea
dry cough
what does dictyocaulosis overwinter as
L3
clincial signs of dictyocaulosis verminous
patent
fever
resp distress
tachypneoa
dyspnoea
airhunger position
deep harsh cough
anoerexia
cachexia
emaciation
weight loss
clinical signs of dictyocaulosis verminous in horse and donkey
inapparent in foals
cough
nasal discharge
resp distress
faecal exam of d.viviparus L1
baermann
faecal exam of d. filaria L1
differentiation
faecal exam of d. arnfieldi
floation
d. viviparus eggs
0.3mm long, granulated poitned end
slow moving
d. filaria eggs
0.5mm long
apical
cutiuclar know at anterior end
dark
asymmetrical intestinal tail wirh blunt end
lashing moving
d. arnfieldi eggs
100um ellipsoidal
thin shelled
contatinint L1
Necroscopy of dictyocaulosis verminous
prepatnet
pulmonary oedema
alveolitis
bronhciolitis
bronchitis
larva in lung pieces
necropscopy of dictyocaulosis verminous
patent
recognised in open airways
chronic bronichitis
peribronchitis
worms and mucus in lumen
interstitial emphysema
another name for protostrongylidosis
small lungworms
protostrongylidosis causes
p. rufescnes
p. brevispiculum
cystocaulus ocreatus
muellerius capillaris
neostrgonylus linearis
morphology of protostrongylidosis
5-60mm long
hair like
colourless
males have bursa copulatrix
2 spirucles
well developed gubernaculum
location of protostrongylidosis
in small bronchi - protostrongylus
in lung parenchyma - c. ocreatus , m. capillaris, n. linearis
life cycle of protostrongylidosis
indirect
PE1 of protostrongylidosis
L1 already hatched in lung –> interhost –> L3 infection by eating interhost –> L3 hatches and sticks to vegetation and is eaten and enter gi tract –> mesenteric ln –> lungs
intermediate host of protostrongylidosis
snails and slugs
prepatent period of protostrongylidosis
5-6 weeks
host of protostrongylidosis
small ruminants
worm pairs of protostrongylidosis
brood nodules
solitaire worms of protostrongylidosis
worm knots
clinical signs of protostrongylidosis
asymptomatic. mild resp
faecal exam of protostrongylidosis
baerann
eggs of protostrongylidosis
250-450um long transparetn
umbrella rod
necroscopy of protostrongylidosis
cone shaped granuloma like brood nodules in lung tissue
glass pin head shaped subpleural grey or dark brown cysts/ knots
diaphragmatic lobe in protostrongylidosis
sexually active worms masses of eggs and larva
metastrongylidosis caused by
m. apri
m. pudendotectus
m. salmi
host of metastrongylidosis
pigs
morphology of metastrongylidosis
1.5-5.5cm long
greyish white
location of metastrongylidosis
lumen of bronchi
diaphragmatic lung lobe
life cycle of metastrongylidosis
indirect
intermediate host of metastrongylidosis
earthworm
L3 can survive up to 4 years in it
PE1 of metastrongylidosis
larvated eggs –> interhost (L3)
PE2 of metastrongylidosis
L3 –> mesenteric ln –> th duct –> v. cava cran –> pul artery –> lung
prepatent period of metastrongylidosis
4-5 weeks
host of metastrongylidosis
boar, pig, guinea pig
clinical signs of metastrongylidosis
not typical
faelca exam metastrongylidosis
floatation
egg of metastrongylidosis
50-60um sized ellipsoidal
rough and thick shelled
necroscopy of metastrongylidosis
lesions in diaphragmatic lobe
formation of small greyish nodules
micropurulaent bronchitis
inflammation and emphysema
ostlerosis, filaroidosis caused by
o. osleri
o. rostratus
f. milksii
f. hirthi
morphology of o. oseri
small, pall worms
0.5-1.5cm
morphology of o. rostratus
male - 3-4cm
female - 5-6cm
morphology of f. milksi
f. hirthi
0.5-1cm
host of f. hirthi
young puppies
location of o. ocsteri
embedded in fibous nodules on tracheal mucosa at region of bifurication and adjacent bronchi
host of o. osleri
dogs and wild dogs
location of o. rostratus
in submucosa of bronchi
embedded in lung parenchym
host of o. rostratus
cats
f. milki
f. hirthi location
lung
alveoli
bronchi
life cycle of ostlerosis, filaroidosis
direct
life cycle of o. rostratus
indirect
inter host of o. rostratus
snails/ slugs
PE2 of ostlerosis, filaroidosis
L1 –> mesenterical ln –> right side of heat –> portal circulation –> pulmonary artery L5 –> adult in lung parenchyma
prepatent period of ostlerosis, filaroidosis
5 weeks
hosts of ostlerosis, filaroidosis
dog
wild ca and fe
clinical signs of ostlerosis, filaroidosis
inapparent
dry, paroxymal cough
resp distress
decreased appetite
imaging of ostlerosis, filaroidosis
trachea endscope
faecal exam of ostlerosis, filaroidosis
L1 is less reliable
necroscopy of ostlerosis, filaroidosis
chronic tracheobronchitis
nodular lesions at bifurcation
capillariosis caused by
c. aerophilia
eucoleus aerophilus
morphology of capillariosis
2-3cm long
whitish
filamentous
location of capillariosis
mucosa of bronchi
trachea
nasal passages
frontal sinuses
life cycle of capillariosis
direct
paratenic hosy of capillariosis
earthworms
PE1 of capillariosis
infection po by eggs containing L1
PE2 of capillariosis
L1 –> lung
prepatent period of capillariosis
3-5 weeks
hosts of capillariosis
fox
clinical signs of capillariosis
inapparent - cough
faecal exam capillariosis
zygote detection via floatation
necroscopy of capillariosis
worms/eggs in tracheal fluids
zygote of capillariosis
60-75 um in length
barrell shaped
asymmetry of bipolar poles with absence of thickening at base
crenosomosis casued by
crenosoma vulpis
morphology of crenosomosis
0.5-1.5cm long
location of crenosomosis
trachea
bronchi
bronchioli
life cycle of crenosomosis
indirect
intermediate host of crenosomosis
molluscs
PE1 of crenosomosis
L1 –>L3 in interhost within 2-3 weeks
infection PO with L3 by snails and slugs
PE2 of crenosomosis
L3 -> mes ln –> right heart –> portal ciruclation —> pul artery
host of crenosomosis
fox, dog, catsq
clinical signs of crenosomosis
inapparent
cough
sneezine
nasal discharge
faecal exam of crenosomosis
L1
baermann
necrscopy of crenosomosis
rhino tracheitis
bronchitis
angiostrongylosis cause
a. vasorum
angiostrongylosis morphology
1-4cm long
pied
white ovaries
spirally wound around the intestine
location of angiostrongylosis
right ventricle
pulmonary artery
Life cycle of angiostrongylosis
indirect
intermediate host of angiostrongylosis
snails and slugs
PE1 of angiostrongylosis
L1 –>L3 interhost for 2-3 weeks
paratenic host of angiostrongylosis
frogs and chicken - also inter host
PE2 of angiostrongylosis
L3 –> mesenteric ln L5 —> right ventricle –> pul artery
host of angiostrongylosis
fox
dog
clinical signs of angiostrongylosis
resp = cough dyspnoea, tachypneoa
neuro = seizure, circling, ataxia, paresis
ocular signs =
petechiae, echymoses, haemorrhage, haematoma
faecal exam of angiostrongylosis
L1
baermann technique
angiostrongylosis L1
310-400um in legnth
kinked tail
dorsal spine and notch
angiostrongylosis in young dogs
sudden death
necroscopy of angiostrongylosis
worms in blood vessels
eggs and larva in p. arteries
rhinotracheitis
bronchitis
endarteritis
endocarditi
thromboangitis
haemoabdomen
haemothorax
pneumonia
fibrosis
aeluronstrongylosis cuased by
a. abstrusus
morphology of aeluronstrongylosis
0.5-1cm long
very slender
location of aeluronstrongylosis
bronchioli
lung parenchyma
life cycle of aeluronstrongylosis
indirect
intermediate host of aeluronstrongylosis
snails and slugs
PE1 of aeluronstrongylosis
L1–>L3
PE2 of aeluronstrongylosis
L3 –> right heart via the blood and lymph systems
prepatent period of aeluronstrongylosis
4-6weeks
hosts of aeluronstrongylosis
cats
clinical signs of aeluronstrongylosis
not specific
open mouth breathing
dyspnoea
intense cough
sneeze
mucopurulent discharge
faecal exam of aeluronstrongylosis
L1 with baermann
necroscopy of aeluronstrongylosis
rhino tracheitis
bronchitis
in lung parenchyma small, greyish , transluccid foci
eggs in lung
cause of troglostrongylosis
t. brevior
t. subcrenatus
t. wilsoni