1_Fasciolidae Flashcards
large leaf like flukes affecting herbivores
fasciolidae
most important genus of Class trematoda in domestic animals
Fasciola or Liver flukes
IH of F. hepatica in the Philippines
Lymnaea auricularia rubigunosa, L. philippinensis, L. viridis
predilection site of adult fasciola hepatica
bile ducts
eggs of Fasciola develop fastest on what temperature
26 degree celcius
how many cercaria are produced in each miracidium
650
prepatent period of f. hepatica
6 to 12 weeks
minimum period for an entire live cycle of fasciola
17 to 18 weeks
longevity of adult fasciola in sheep and man
9 months in sheep, up to 20 years in man
1st phase of fluke migration effect
liver damage and hemorrhage
2nd phase of fluke migration effect on the host
hematophagic activity and damage to mucosa due to cuticular spines
adverse effect of immature flukes during migration in the liver parenchyma
mechanical destruction of parenchyma and blood vessels
adverse effect of immature and adult flukes during migration in the liver parenchyma and lodgment in the bile duct
toxic secretory and excretory products. Loss of blood
lesions of acute form of fasciolosis
peritonitis, acute hemorrhagic hepatitis
lesions acquired from massive longer intake of MC
peritonitis, enlarged liver, cholangitis, liver fibrosis
chronic fasciolosis causes these lesions
chronic cholangitis, hepatic fibrosis, hypoalbuminemia
Final hosts of fasciola with low resistance immunity
sheep, goat, rabbit, mouse, rat
IH of F. hepatica in Europe
Lymnaea truncatula
IH of F. hepatica in Aus., NZ
L. tomentosa, L. columella
IH of F. hepatica in South America
L. viator, L. cubensis
Final hosts of fasciola with delayed resistance immunity
cattle, buffalo, camel, deer, guinea pig, man
IH of F. hepatica in New Guinea, China
L. viridis
form of fasciolosis associated with Clostridium novyi
Acute form
lesions of chronic fasciolosis
hepatic fibrosis, hyperplastic cholangitis
chronic fasciolosis is characterized in cattle by presence of
pipe stem liver or hazel nut sized cysts in the lungs
Final hosts of fasciola with early resistance immunity
horse, pig, dog, cat
One authentic clinical sign of chronic form of fasciolosis
bottle jaw or edema of the intermandibular space
large 2-10 cm, oval and thick flesh colored fluke
fascioloides or large american liver fluke
IH of fascioloides magna
Lymnaea sp., Fossaria sp., Siagnocola sp.
normal definitive host of fascioloides magna
white tailed deer
striking characteristic Fascioloides magna infection
black iron porphyrin in liver, omentum, kidneys
infection is through ingestion of MC in water plants like water chestnuts
Fasciolopsis
IH of Fasciolopsis buski
Planorbis sp., Segmentina sp
predilection site of Fasciolopsis buski
small intestine
final host of f. buski
man and pigs
Fasciolidae genera and species affecting hippopotamus
Fasciola nyanzae
fasciolidae genera and species affecting elk and wild goats
parafasciolopsis fasciolaemorpha
Fasciolidae genera and species affecting Elephant
Fasciola jacksoni
