From: Doug Skrecky (oberon@vcn.bc.ca)
Date: Sat Dec 30 2000 - 11:47:01 MST
This is the 33'rd update on my fly longevity experiments. In
Run #33 I look at a variety of Stash herbal teas. No strong effects
were detected this time on average survival, though some increases in
maximum lifespan seemed to occur.
Run #33 Percent Survival on Day
supplement 11 20 24 27 31 34 39 42 45 49 52 55 58 61 66 70 74 79 83
___________________________________________________________________
control 85 85 85 85 70 70 50 40 35 30 15 5 5 5 0 - - - -
apple 80 80 76 76 64 56 52 48 48 36 24 24 16 16 8 4 4 0 -
chamomile 82 82 76 76 65 71 59 47 41 29 29 29 24 12 6 0 - - -
licorice 94 75 81 81 56 56 56 50 38 38 38 31 19 13 6 6 0 - -
lemon 89 89 89 89 83 67 67 56 28 28 28 22 17 11 11 11 6 6 6
peppermint 95 68 63 58 42 42 37 32 16 16 11 11 5 5 0 - - - -
ruby mist 84 84 79 68 68 68 68 68 47 42 26 26 26 21 21 16 5 0 -
sandman 94100 94 78 78 67 50 50 44 44 39 39 33 33 22 17 17 6 6
In Freezer Run #5, I try testing polyethylene glycol again. This
time the flies were transfered from the PEG bottles to bottles
containing ordinary fly food immediately before storage in my freezer.
The good news is that this time no flies drowned because of fluid
released from frozen/thawed fly food. The bad news is that none of
flies survived 90 minutes of storage in my freezer.
Three conclusions:
#1: 90 minutes is too long a storage period.
#2: Feeding flies cryoprotectants looks to be useless.
#3: PEG being generally recognized as safe is balony.
Freezer Run #5 Percent Survival After
supplement 0 90 minutes
________________________________
pycnogenol 300 mg 96 0
+ PEG 200 14% 62 0
+ PEG 200 40% 17 0
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