Trematode intro

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Questions and Answers

Describe the morphological characteristics of trematodes.

Leaf shaped, dorso-ventrally flattened, have oral and ventral suckers, has a mouth but no anus and are hermaphroditic.

Trematodes have a direct lifecycle

False (B)

The intermediate host for trematodes is a(n) ____________

The intermediate host for trematodes is an aquatic snail

How do you diagnose a patient with trematodes?

Sedimentation (B) Signup and view all the answers

What is an operculum?

A small hat or lid covering on an egg. Signup and view all the answers

Match the following larvae to its direct description.

Miracidia = Free living ciliated larval stage Rediae = Larval stage inside IH Cercariae = Free-living tadpole like larval stage Metacercariae = Encysted resting stage of trematode (aka infective stage) Signup and view all the answers

Trematodes can either have one or two indirect hosts in their lifecycle

True (A) Signup and view all the answers

What are the 8 trematodes that were discussed for this week?

Fasciola hepatica, Fascioloides magma,paramphistomum, dicrocoelium, paragonimus kellicotti, nanophyetus salmincola, alaria, and platynosomum Signup and view all the answers

Match to their correct street name

Fasciola hepatica = Liver fluke Fascioloides magna = Deer fluke/large American liver fluke Paramphistomum spp = Rumen fluke Dicrocoelium spp = Lanceolate fluke Signup and view all the answers

Match to the correct street name

Paragonimus kelicotti = Lung fluke Nanophyetus salmincola = Salmon poisoning fluke Alaria = Intestinal fluke Platynosomum fastosum = Liver fluke of cats Signup and view all the answers