Prosthogonimidae Flashcards
-small flukes, whose bodies taper anteriorly and rounded posteriorly
-Cuticle covered with spine
-Testes symmetrical, posterior to ventral sucker; ovary lies between these or dorsal to ventral sucker
-Vitellaria grape-like lie in the the lateral field
Family Prosthogonimidae
Mainly parasites of
Birds
Parasites found in the
Cloaca and reproductive tract of birds
Two IH are required
First: water snail
Second: nymphal stage of various dragonflies
Stages in the snail IH
2 generations of sporocysts are produced the 2nd generation produces the cercariae
______ are liberated from the snail and swim in water and are drawn into the ______ of dragonfly naiads by breathing movements of these insects
-Cercariae
-anal openings
Metacercariae occurs in _______ of the _____ and persists in the insect until it matures
-muscles of the nymph
Infection
Final host infected by eating adult dragonfly or the nymphal stage
-in the final host the immature trematode migrate to the cloaca and bursa of Fabricius where they become adults
Family species
Prosthogonimus pellucidus
P. macrocorchis
P. ovatus
Natural DH
Prosthogonimus pellucidus
P. macrocorchis
P. ovatus
-fowl, duck, various wild birds
-Ducks, wild birds
-Domestic fowl, geese
Habitat
Prosthogonimus pellucidus
P. macrocorchis
P. ovatus
-Bursa of fabricius, oviduct, posterior intestine
-Bursa of fabricius, oviduct
-Bursa of fabricius, oviduct
Snail IH
Prosthogonimus pellucidus
P. macrocorchis
P. ovatus
-Bithynia teutaculata
-Amnicola limosa porata
-Bithynia leachi, Gyraulus albus
Second IH
Prosthogonimus pellucidus
P. macrocorchis
P. ovatus
-Dragonfly (adults or naiads)
-Dragonfly
-Dragonfly
Causes marked irritation of the oviduct resulting in acute inflammation, production of abnormal eggs & discharges of albumen into the cloaca
Pathology of P. pellucidus
Pathology of P. pellucidus
There is retroperistalsis of oviduct causing entry into the peritoneal cavity of broken yolk, albumen, bacteria and parasite material
