Lifecycle of the Roundworm

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Lifecycle of the Roundworm
Eggs hatch on the ground are eaten by an
animal.
Eggs passed out of body through feces.
Enter intestine
The larvae penetrate the intestinal wall .
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Enter bloodstream
Larvae move through blood to the liver.
Larvae grow develop in lungs.
Enter lungs
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Larvae mature reproduce.
Larvae are coughed up, re-swallowed, return to
intestines.
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Lifecycle of the Tapeworm
Animal ingests intermediate host receive larvae.
Larvae turn into adult.
Adult lives in small intestine feeds off of
host.
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Adult body is made up of egg-filled worm segments.
Egg-filled segments leave body through the
feces.
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Larvae develop in intermediate hosts.
Beetles, Mosquitoes, Crickets, etc. ingest eggs
(intermediate host).
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Lifecycle of the Mosquito
Adult lays egg directly in the water or on dry
surfaces.
Eggs hatch to larval form once they are moistened.
Larvae change to pupa form in water.
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Carries many diseases Encephalitis, malaria,
fowl pox, etc.
Metamorphosis occurs changing larvae to adult.
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Lifecycle of the Bot Fly
Adult fly lay eggs onto horses leg. (up to 500)
Horse licks leg. Eggs get into mouth.
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Eggs hatch in mouth.
Larvae develop in mouth and is swallowed.
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Pupa burrow into the ground until adult fly
emerges during warm weather. (4 to 8 weeks)
Larvae migrate to stomach and attach to stomach
walls for 8 to 10 months.
Larvae change into pupal stage leave with
feces.
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Parasites
Bot Fly
Tapeworms
Scolex
Proglottids
Roundworms
Mosquito