Difference between revisions of "Insect Life Cycles"
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| − | + | *Most adult female insects are '''oviparous''' | |
| + | **Lay eggs which hatch after deposition | ||
| − | + | *Some adult female insects are '''viviparous''' | |
| + | **Lay larvae or nymphs | ||
| + | **Eggs rupture in female reproductive tract | ||
| − | + | ===Simple Metamorphosis=== | |
| − | + | *Hemimetabolous | |
| − | + | *Nymph emerges from the egg which resembles the adult but is '''sexually immature''' | |
| − | + | *Nymph grows and undergoes several ecdyses (moults) | |
| − | + | *Nymph becomes an adult (imago) | |
| − | + | *E.g. Lice | |
| − | + | ===Complex Metamorphosis=== | |
| − | + | *Holometabolous | |
| − | |||
| − | |||
| + | *Larva emerges from the egg and does not resemble the adult | ||
| − | + | *Larva feeds, grows and undergoes several ecdyses | |
| − | + | *Larvae undergoes a quiescent stage where the outer cuticle hardens to form a pupa | |
| + | **Some species have a silken cocoon | ||
| − | + | *Adult develops inside the pupal case before emerging | |
| − | [[Category: | + | *E.g. Fleas and dipteran flies[[Category:Insecta]] |
| + | [[Category:To_Do_-_Parasites]] | ||
Revision as of 21:45, 25 June 2010
- Most adult female insects are oviparous
- Lay eggs which hatch after deposition
- Some adult female insects are viviparous
- Lay larvae or nymphs
- Eggs rupture in female reproductive tract
Simple Metamorphosis
- Hemimetabolous
- Nymph emerges from the egg which resembles the adult but is sexually immature
- Nymph grows and undergoes several ecdyses (moults)
- Nymph becomes an adult (imago)
- E.g. Lice
Complex Metamorphosis
- Holometabolous
- Larva emerges from the egg and does not resemble the adult
- Larva feeds, grows and undergoes several ecdyses
- Larvae undergoes a quiescent stage where the outer cuticle hardens to form a pupa
- Some species have a silken cocoon
- Adult develops inside the pupal case before emerging
- E.g. Fleas and dipteran flies