There are alternative
s to using FlyNap. My Biology teacher
and I experimented with them when the FlyNap shipment did not come in.
Alternative one: Freeze
for a short period of time, in order to calm them down enough that they can be transferred to a petri dish
: Half of the flies die
. The other half are knocked cold (heh, heh) but reawaken as soon as you have the petri dish closed and have no way of getting them back into the habitat vial
without freezing them (killing most of them) again.
Alternative two: Oxygen deprivation
This was my idea
. We placed alka-seltzer
in a beaker with water, and routed a tube into the habitat. This didn't kill
quite so many, and they seemed to be rather securely unconscious
. We opened the top, started to shake them into the dish, and by the time the oxygen
had hit them half were already in the air
. It was a mess... and five lab groups were doing it before we realized what was happening. We spent a few minutes trying to catch those that we could (futile
), and gave up.
Alternative three: Use rubbing alcohol
in place of FlyNap. Deposit a drop into each habitat vial.
all of the flies.
At this point, we decided that there were no other alternatives, and postponed the lab
until FlyNap (and more drosophila
) could be secured. We did nothing for nearly a week. Mission successful