X-Message-Number: 22746
Date: Tue, 28 Oct 2003 19:23:22 -0800 (PST)
From: Doug Skrecky <>
Subject: 111'th update on fly longevity experiments

    This is the 111'th update of my fly longevity experiments. Average
temperature was 25.8 C during this run. Estimated maximal longevity using
the formula (363 - T*11.2) is 74 days.
    Control maximum survival was rather poor this time at only 45 days. It
was 51 days for the last run. Of the raw produce extracts, head lettuce,
and acorn squash appeared to be particularly beneficial. At 68 days the
maximum survival for head lettuce was only 8% less than the estimated
maximal longevity under "pathogen free" laboratory conditions. Since I
began recording temperatures, none of the maximum survivals in any of my
experiments has ever exceeded the estimated maximal longevity for the
Oregon-R substrain of drosophila melanogaster.

Run #111                      Percent Survival on Day
supplement             9 14 20 25 30 35 40 45 51 57 62 68 74
____________________________________________________________
control one           82 62 48 40 32 20  8  0  -  -  -  -  -
control two           66 62 41 31 28 17 10  7  0  -  -  -  -
lettuce, head 8%      83 76 76 71 55 45 36 21 10 10  5  0  -
lettuce, head 33%     87 87 73 60 53 40 29 22 11  4  4  2  0
radish, leaf 8%       71 61 50 42 29  8  8  3  0  -  -  -  -
radish, leaf 33%      85 76 63 51 49 37 17 17 10  7  5  0  -
radish, root 8%       75 52 40 19 15 15 10  8  4  0  -  -  -
radish, root 33%      78 76 71 67 56 42 31 18  7  4  4  0  -
squash, acorn 8%      72 72 66 55 49 40 28 17 13  6  6  0  -
squash, acorn 33%     71 71 63 60 54 46 34 26 17 11  6  0  -
squash, spaghetti 8%  69 69 56 56 50 38 31 28 13  3  3  0  -
squash, spaghetti 33% 69 65 58 54 42 27 27 12  8  0  -  -  -

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