Insect evolution and synchronization

Insect evolution and synchronization - • Can’t have...

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28/03/2008 09:58:00 Synchronous control Asychronous control CNS command= many wing flap cycles Evolution of insect wings-  Wings on thorax Stoneflies, mayflies- o Aquatic larval stage w/gills o Gills are moved back and forth to help exchange gases o Maybe the source of insect wings? Amphibians and changes in life history stages No marine insects o Any aquatic larval form must be in freshwater o Freshwater insect species must have evolved from terrestrial  ancestors Terrestrial winged insects must have evolved from freshwater ancestors  (there are lots of terrestrial winged insects w/no aquatic stage)
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Unformatted text preview: • Can’t have terrestrial winged insects until after you have freshwater insects w/ an aquatic larval stage, which you can’t have until after terrestrial unwinged evolved ← Order Odonata: Dragon flies, damsel fies ← Order Orthoptera: Grass hoppers, praying mantis, locusts, walking sticks ← Order Hemiptera: true bugs, stinkbugs (piercing and sucking mouth parts) assassin bug ← Order Lepidoptera: butterflies, moths, ← Order Diptera: True Flies, mosquitos, horse flies ← Order Hymenoptera: bees, ants, wasps 28/03/2008 09:58:00 ← 28/03/2008 09:58:00 ←...
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Insect evolution and synchronization - • Can’t have...

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