Phylum Platyhelminthes. Parasitic Flatworms (Flukes & Tapeworms). II. Class Trematoda Endoparasitic flukes - inside host Wide , flat with oval or elongate bodies Have 2-3 hosts :
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(Flukes & Tapeworms)
Signs and Symptoms: enlarged liver
liver failure, feeling of fullness, abdominal discomfort, jaundice, fatigue, weakness, nausea, and weight loss.
Signs and Symptoms: Fasciolosis
Humans: fever (usually first symptom), Abdominal pain, loss of appetite, nausea, diarrhea, respiratory problems, chest pains, anemia, jaundice
Animals: there can be four different types; Type I, Type II, Subacute, and Chronic. These are based on the number of ingested metacercariae with Type I being the most (more than 5000 ingested). Sudden death, weakness, anemia, weight loss, etc.
http://www.goatbiology.com/animations/fasciola.html (common fluke life cycle)
a. Scolex- head-like structure; hooks & suckers for attachment (not feeding)
b. Neck- contains immature proglottids- series of repeating units of reproductive organs.
c. Strobila- rest of body; mature and gravid (pregnant with eggs) proglottids
a. No mouth or digestive tract.
b. Absorb nutrients directly across their body wall.
a. Scolex b. Proglottid c. strobila
a. True b. false
a. Snail b. Mosquito c. tapeworm
a. Mosquito b. Snail c. pig
a. Zooid b. Bladderworm c. Muscle worm