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| + | == General Appearance == |
| + | *Non-bursate. |
| + | *Big fleshy worms; typically 5-40cm long (depending on age, sex and species). |
| + | *Three lips around the mouth. |
| + | *A single-bulbed pharynx. |
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| + | == General Life-Cycle == |
| + | *Adult females in small intestine lay eggs. |
| + | *Eggs have a thick protective shell. |
| + | *Some also have a sticky outer albuminoid coat. |
| + | *Eggs passed in faeces. |
| + | *L1 → infective L2 inside the egg. |
| + | *Infection is by ingestion of the embryonated egg (egg in which a larva has formed). |
| + | *Eggs can remain viable in humid environment for up to 5years. |
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| [[Ascaridida]] | | [[Ascaridida]] |