2) Trematodes - Eggs and Larvae

genus and species?

Fasciolopsis buski (egg)

structures of Fasciolopsis buski (egg)

operculum

(top row, two right = embryonated)

(bottom row = Fasciola hepatica)

developmental stage?

egg (Fasciolopsis buski)

genus and species?

Clonorchis sinensis (egg)

structures of Chlonorchis sinensis (egg)?

SMALL SIZE

(2nd and 3rd row magnified)

operculum

formed miracidiumd

developmental stage?

egg (chlonorchis sinensis)

genus and species?

Paragonimus westernmani (egg)

structures of Paragonimus westernmani (egg)?

thick abopercular wall (arrow)

wide operculum (O) sitting in rim

developmental stage?

Paragonimus westernmani (egg)

genus and species?

paragonimus westernmani (larvae)

developmental stage?

paragonimus westernmani (larvae)

genus and species?

schistosoma mansoni (eggs)

structures of schistosoma mansoni (egg)?

fully formed miracidium

large lateral spine

developmental stage?

schistosoma mansoni (egg)

genus and species? (h)

Schistosoma mansoni (Cercaria)

structures of Schistosoma manosoni (cercaria)

forked tail that attaches 2 human skin

→ penetrate, called schistosomula

genus and species?

Schistosoma mansoni in liver histological section (egg)

developmental stage?

Schistosoma mansoni in liver histological section (egg)

genus and species?

Schistosoma japonicum (eggs)

structures of Schistosoma japonicum (eggs)?

fully formed miracidium

minute lateral spine

developmental stage?

Schistosoma japonicum (eggs)

genus and species?

Schistosoma haematobium (eggs)

structures of Schistosoma haematobium (eggs)?

terminal spine

fully formed miracidium

developmental stage?

Schistosoma haematobium (eggs)

genus and species? (b and c)

b. Fasciola hepatica (metacercariae)

c. Paragonimus westernmani (metacercariae)

developmental stages?

b. Fasciola hepatica (metacercariae)

c. Paragonimus westernmani (metacercariae)

genus and species?

Fasciola hepatica (meracidium)

structures of Fasciola hepatica (meracidium)

eye spots

cilia

germinal cells