Opisthorchiidae Flashcards

1
Q

-small to medium sized flukes parasitic in the gallbladder and bile ducts of reptiles, birds & mammals

A

Family Opisthorchiidae

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2
Q

Important spp

A

Parasites of fish eating mammals

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3
Q

-Bodies are flattened and translucent; suckers are weak & not far apart
-Pharynx & esophagus present & intestinal caeca reaching the posterior extremity
-Testes at posterior part of the body & arranged diagonally
-Ovary anterior to the testes

A

Family Opisthorchiidae

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4
Q

Species

A

Opisthorchis tenuicollis
O. viverrini
Chlonorchis sinensis
Metorchis albidus
Metorchis conjunctus

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5
Q

Natural DH

Opisthorchis tenuicollis
O. viverrini
Chlonorchis sinensis
Metorchis albidus
Metorchis conjunctus

A

-Dog, cat, fox, pig
-Civet, domestic & wild cats, dog, man
-Man, dog, cat, pig, weasel, mink, badger
-Dog, cat, fox, grey seal
-Cat, dog, fox, mink, racoon

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6
Q

Habitat

Opisthorchis tenuicollis
O. viverrini
Chlonorchis sinensis
Metorchis albidus
Metorchis conjunctus

A

-Bile ducts
-Bile ducts
-Bile ducts
-Gall bladder, bile ducts
-Bile ducts

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7
Q

Snail IH

Opisthorchis tenuicollis
O. viverrini
Chlonorchis sinensis
Metorchis albidus
Metorchis conjunctus

A

-Bithynia leachi, B. infata
-B. goniomphalus, B. funniculata
-Parafossalurus manchuricus, Bulinus, Bithynia, Melania, Vivipara
-Amnicola limosa, Bithynia teutaculata
-Amnicola limosa

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8
Q

2nd IH

Opisthorchis tenuicollis
O. viverrini
Chlonorchis sinensis
Metorchis albidus
Metorchis conjunctus

A

-Crypnid fish
-Crypnid fish
-Crypnid fish
-Crypnid fish
-Castostomus commersoni (commin sucker)

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9
Q

Pathology of Clonorchis sinensis

A

-dilatation of bile duct adenomatous thickening
-catarrhal cholecystitis
-desquamation of bile duct epithelium
-periductal fibrosis w/ bile stasis & jaundice
-cholangiocarcinoma

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10
Q

Clinical signs of C. sinensis infection (man)

A

-diarrhea
-abdominal pain
-icterus
-ascites

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11
Q

Treatment and prophylaxis of C. sinensis

A

-niclofolan
-Praziquantel (30mg/kg PO once daily)
-thorough cooking or freezing of fish
-Control of snail IH
-proper disposal of human excreta

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12
Q

Formosan gem-faced civet

A
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