This is the 50'th update of my fly longevity experiments. All bottles
contain 1/4 tsp citric acid as a standard additive. Recorded average
temperature during the experiment was 25.7 C.
In the current experiment I test the effect of different doses of a
variety of fibers on fly mortality. No significant benefit on average
longevity was seen. I attribute the poor maximum longevity of the control
bottle, to their being only 10 flies in this bottle. The toxicity of
xanthan gum is here confirmed. Some protein sources are tested in the next
run.
Run #50 Percent Survival on Day
supplement 4 11 16 22 27 32 37 43 49 56
__________________________________________________
control 90 50 40 30 20 10 0 - - -
arabica gum 1 tsp 100 65 59 59 35 29 12 12 6 0
arabica gum 2 tsp 89 61 50 44 11 11 11 6 6 0
corn bran 1 tsp 100 38 38 25 25 25 13 0 - -
corn bran 2 tsp 100 71 36 14 14 14 14 14 7 0
guar gum 1/4 tsp 100 30 30 20 10 10 0 - - -
pectin 1/4 tsp 100 52 48 39 35 19 10 6 3 0
xanthan gum 1/4 tsp 72 0 - - - - - - - -
This archive was generated by hypermail 2b30 : Sat May 11 2002 - 17:44:17 MDT