Dicrocoelidae

Question 1

-Small to medium sized flukes
-Parasitic to biliary & pancreatic ducts of amphibia, reptiles, birds & mammals
-Body is flattened, elongate, weak musculature, loose parenchyma
-Cuticle w/o spines

Answer 1

Dicrocoelidae

Question 2

-Pharynx, esophagus are present & intestinal caeca simple
-Testes situated behind the ventral sucker, ovary posterior to testes
-Vitelline glands on the lateral region of the body, uterus situated on posterior region of the body
-Eggs deep brown in color

Answer 2

Dicrocoelidae

Question 3

Common snail IH

Answer 3

Cionella lubrica (North America)
Zebrina detrita (Europe)

Question 4

Larval stages in snail

Answer 4

Sporocyst; daughter sporocyst; cercariae

Question 5

____ emerge from snail during damp weather form the snail’s ________ clamped together in ______ containing ____

Answer 5

-Cercariae
-Pulmonary chamber
-Slime balls
-200-400 cercariae

Question 6

Slime-balls are eaten by _____, where _____ develops in the abdominal cavity

Answer 6

-Ants ( Formica fusca)
-Metacercariae

Question 7

Definitive hosts are infected by _______ and immature trematode reach the liver by______. Pre-patent period is ______

Answer 7

-swallowing infected ants, i.e., together with herbage
-way of common bile duct
-47-54 days

Question 8

Eurytrema pancreaticum

Answer 8

Pancreatic ducts of sheep, goat, cattle & buffalo

Question 9

-Adults are 8-16 by 5-8.5 mm
-Suckers are large, esophagus short & pharynx small
-Testes horizontal posterior to the ventral sucker, ovary located medially posterior to the testes

Answer 9

Eurytrema pancreaticum

Question 10

E. pancreaticum
-Snail IH
-2nd IH
-Def. host
-Prepatent period

Answer 10

-Cathaica ravida sieboltiana
-grasshopper (Conocephalus maculatus) & tree cricket (Oecanthus longicaudus)
-Are infected by inadvertently swallowing grasshoppers and the immature trematode reaching the pancreas via pancreatic ducts
-In sheep and cattle: 80-100 days

Question 11

Occurs in the liver & bile ducts of domestic and wild cats

Answer 11

Platynosomum fastosum

Question 12

The fluke has been associated with the occurrence of ‘lizard poisoning’ in cats

Answer 12

Platynosomum fastosum

Question 13

Platynosomum fastosum
-Snail IH
-2nd IH
-Drug of choice
-Immature fluke migrates up the _____ to _____ & ______ and develops maturity in ______

Answer 13

• Sublima octona
• isopod crustaceans and lizards (Anolis cristatelus)
  -praziquantel (20 mg/kg)
  -common bile duct to the bile ducts & gall bladder, 8-12 weeks

Question 14

Adults occur in pancreatic ducts, gall bladder & bile ducts of cats, red & grey foxes and racoons

Answer 14

Concinuum procyonis

Question 15

Concinuum provyonis
-Snail IH
-Suggested 2nd IH

Answer 15

-Mesodon thyroidus
-grasshopper