From: Doug Skrecky (oberon@vcn.bc.ca)
Date: Mon Oct 28 2002 - 19:46:36 MST
This is the 70'th update of my fly longevity experiments. Average
temperature was 24.4 C during this run. Here I test various mineral
supplements at a dosage I had previously found to be relatively nontoxic
for class of supplement.
Only sodium chloride offered an advantage, and then only late in life.
Possibly aged flies have impaired immunity, and sodium chloride may have
helped to suppress the growth of any microorganisms that could survive the
mold inhibitor & citric acid combination already incorporated into the fly
food.
Run #70 Percent Survival on Day
supplement 7 15 24 33 42 53
______________________________________________
control 94 65 61 26 3 0
gypsum 1/32 tsp 97 79 72 14 0 -
magnesium citrate 1/32 tsp 100 67 58 17 4 0
magnesium sulfate 1/32 tsp 100 65 65 22 0 -
potassium nitrate 1/32 tsp 100 55 30 25 5 0
sodium bicarbonate 1/32 tsp 91 68 50 27 5 0
sodium chloride 1/32 tsp 93 57 53 43 10 0
sodium nitrate 1/32 tsp 96 54 46 19 4 0
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