X-Message-Number: 25125
Date: Sun, 21 Nov 2004 09:36:45 -0800 (PST)
From: Doug Skrecky <>
Subject: 159'th update on fly longevity experiments

     This is the 159'th update of my fly longevity experiments. Average
 temperature was 25.9 C during this run. Estimated maximal longevity using
 the formula (363 - T*11.2) is 73 days.
     Since I have begun rotating breeding bottles more frequently,
 longevity has improved to the point where even the estimated maximal
 longevity has been frequently exceeded. I suspect a reduced pathogen load
 may account for this advancement. Cinnamon has been beneficial in  the
 past, but it is not clear to me whether this would continue to be case,
 under current conditions.
     In the present run neither cinnamon nor inositol exerted any benefit.
 This leads me to suspect that many of the supplements which used to offer
 benefit, may now also prove to be ineffective. The next run takes yet
 another look at citric acid, and also systematically examines the effect
 of moisture.

 Run #159                Percent Survival on Day
 supplement         11 21 26 31 36 41 46 51 56 61 76
 ___________________________________________________
 control one        83 81 67 53 50 42 31 22  3  3  0
 control two        91 54 43 37 37 34 26 26 14  6  0
 cinnamon 1/32 tsp  91 69 49 29 23 14 11 11  9  6  0
 cinnamon 1/16 tsp  82 69 49 51 47 37 28 20 16  6  0
 cinnamon 1/8 tsp   93 67 41 41 37 22 22  7  4  0  -
 cinnamon 1/4 tsp   94 39  6  6  0  -  -  -  -  -  -
 inositol 1/4 tsp   85 83 60 49 43 38 28 25  8  0  -
 inositol 1/2 tsp   90 78 54 42 39 29 29 20 12  5  0
 inositol 1 tsp     84 54 38 30 30 24 14  8  3  0  -
 inositol 2 tsp     91 63 40 29 23 20 11  9  3  0  -
 inositol 4 tsp     78 54 49 27 22 19 16  8  5  5  0

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