I was thinking yesterday about insects (as there was a spider in the house, and I couldn't help but think of anything else, even though they aren't insects), and I started to wonder if ants sleep?
After thinking about it for a while I decided that they might sleep, but then what would be the purpose of sleeping for them? My limited understanding of the need of sleep is that it is used for the brain to compartmentalise the events of the day and allow memories to be formed. But ants don't really have to think about much during the day, given that they act more as a collective than an individual. Or in the case of other insects, they have simpler more instinctive brains which rely on taxis, reflexes and kineses.
So, do ants and other insects sleep (or do they have a different type of sleep to us) and what would the purpose of it be for them?