X-Message-Number: 28004
Date: Thu, 1 Jun 2006 23:44:43 -0700 (PDT)
From: Doug Skrecky <>
Subject: 226'th update on fly longevity experiments

      This is the 226'th update of my fly longevity experiments. Average
 temperature was 23.9 C during this run. Estimated maximal longevity using
 the formula (363 - T*11.2) is 95 days.
      This run attempts to test the effect of heavy water on fly
 longevity. The only source of heavy water that could be purchased without
 coming under RCMP scrutiny turned out to be Jane Iredale's D20 spritz.
 This product includes some herbal extracts, plus some potassium sorbate.
 The later item is known to be toxic to flies at high dosages, as shown in
 run #200.
      There was no significant effect of this source of heavy water on
 longevity.

  Run #226          Percent Survival on Day
  supplement     9 18 32 47 56 65 76 88 96 104
  ____________________________________________
  control one   97 78 67 28 19  3  3  3  3   0
  control two  100 93 84 51 27 15  0  -  -   -
  D20 1/32 tsp  94 85 70 29 17  9  2  2  0   -
    " 1/16 tsp 100 92 80 54 43 16  0  -  -   -
    " 1/8 tsp  100 93 73 40 27 15  3  0  -   -
    " 1/4 tsp   98 88 71 29 17 10  2  0  -   -
    " 1/2 tsp   96 89 80 44 18  9  2  0  -   -
    " 1 tsp    100 82 71 43 34 21  2  0  -   -
    " 2 tsp     98 85 74 36 21 11  2  0  -   -
    " 3 tsp    100 75 60 28 18 13  0  -  -   -

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