Modulating the body's networks could become mainstream therapy for many health issues.
Image credit: The Feinstein Institutes for Medicine Research.
New Research In
Physical Sciences
Featured Portals
Articles by Topic
Biological Sciences
Featured Portals
Articles by Topic
-
Edited by John Maynard Smith, University of Sussex, Brighton, United Kingdom, and approved September 12, 1997 (received for review July 21, 1997)
Article Figures & SI
Figures
- Figure 1
Egg-to-imago mortalities in the experimental populations (MCN-1, solid lines; MCN-2, broken lines) and their linear regressions on generation number t (0.1506 + 0.0012t in MCN-1 and 0.1829 + 0.0021t in MCN-2). The data for generation 15 are absent because back-up vials were used. The infecundity rate was ≈1% in MCN-1 and ≈2% in MCN-2.
- Figure 2
Distributions of fecundities of the outbred and inbred frozen control females, outbred and inbred MCN-1 females, and females originated in the frozen control × MCN-1 cross in the third measurement of fitness-related traits.
- Figure 3
Means, SEs, and linear regressions on the generation number of the differences between the competitive abilities of MCN-1 (solid lines) or MCN-2 (broken lines) and the average competitive ability of the two controls.
Tables
Generation Frozen control Cold control MCN-1 MCN-2 10 105.04 ± 1.68 (4) 103.90 ± 1.51 (6) 96.68 ± 2.28 (7) 92.99 ± 1.88 (4) 20 97.53 ± 1.42 (2) 88.62 ± 1.99 (1) 91.06 ± 1.96 (4) 90.47 ± 1.52 (3) 30 105.30 ± 1.83 (7) 108.15 ± 1.94 (4) 99.69 ± 1.93 (6) 93.68 ± 2.49 (3) Regression coefficient 0.00049 −0.00049 −0.00225 −0.00376 ±0.00044 ±0.00050 ±0.00056 ±0.00054 -
Fecundities deviating from the mean by more than 3 SD (calculated for all nonsterile females) were discounted. The total numbers of discounted females are given in parentheses.
-
Generation Frozen control Cold control MCN1 MCN2 Dark eye reference line, Density 6:6 10 −0.332 ± 0.205 −0.276 ± 0.115 −0.480 ± 0.109 −0.689 ± 0.112 20 0.618 ± 0.157 0.151 ± 0.266 0.581 ± 0.213 −0.209 ± 0.114 30 −0.926 ± 0.293 −0.611 ± 0.175 −1.468 ± 0.285 −1.474 ± 0.163 Regression coefficient 0.0002 −0.0002 −0.0128 −0.0264 ±0.0060 ±0.0052 ±0.0059 ±0.0035 Dark eye reference line, Density 12:12 10 −0.083 ± 0.152 −0.165 ± 0.159 −0.854 ± 0.189 −0.561 ± 0.232 20 0.654 ± 0.153 0.414 ± 0.312 0.107 ± 0.155 −0.337 ± 0.114 30 −1.005 ± 0.177 −1.258 ± 0.189 −1.736 ± 0.283 −2.058 ± 0.190 Regression coefficient 0.0044 −0.0048 −0.0248 −0.0359 ±0.0042 ±0.0055 ±0.0059 ±0.0051 Ebony reference line, Density 6:6 10 0.269 ± 0.161 0.248 ± 0.167 0.117 ± 0.142 0.264 ± 0.236 20 0.808 ± 0.189 −0.041 ± 0.182 0.627 ± 0.154 0.146 ± 0.276 30 −0.268 ± 0.153 −0.192 ± 0.121 −1.106 ± 0.326 −1.307 ± 0.216 Regression coefficient 0.0049 −0.0050 −0.0165 −0.0272 ±0.0046 ±0.0043 ±0.0063 ±0.0065 Ebony reference line, Density 12:12 10 1.127 ± 0.161 0.962 ± 0.138 0.399 ± 0.194 0.903 ± 0.197 20 0.523 ± 0.249 0.203 ± 0.216 0.263 ± 0.264 30 −1.673 ± 0.255 −1.030 ± 0.266 −2.108 ± 0.249 −1.513 ± 0.282 Regression coefficient −0.0037 0.0048 −0.0293 −0.0057 ±0.0061 ±0.0057 ±0.0073 ±0.0066 -
The missing entry is due to an experimental error.
-
Frozen control Cold control MCN-1 Mean 0.713 ± 0.048 0.632 ± 0.032 0.563 ± 0.032 Sire 0.026 ± 0.010 0.025 ± 0.021 0.018 ± 0.013 Dam 0.040 ± 0.034 0.059 ± 0.018 0.058 ± 0.018 Residual 0.063 ± 0.028 0.057 ± 0.014 0.067 ± 0.015 Generation Frozen control Cold control MCN-1 MCN-2 10 2.80 ± 0.065 2.62 ± 0.089 2.59 ± 0.085 2.44 ± 0.080 20 2.58 ± 0.088 2.55 ± 0.116 2.51 ± 0.084 2.44 ± 0.111 30 2.70 ± 0.131 2.72 ± 0.097 2.61 ± 0.082 2.70 ± 0.106 Regression coefficient 0.00067 −0.00007 −0.00187 −0.00291 ±0.00078 ±0.00075 ±0.00069 ±0.00075
Rapid decline of fitness in panmictic populations of Drosophila melanogaster maintained under relaxed natural selection
Sign up for Article Alerts
Jump to section
You May Also be Interested in
Adaptations in heart structure and function likely enabled endurance and survival in preindustrial humans.
Image courtesy of Pixabay/Skeeze.
Viscoelastic carrier fluids enhance retention of fire retardants on wildfire-prone vegetation.
Image courtesy of Jesse D. Acosta.
Water requirements may make desert bird declines more likely in a warming climate.
Image courtesy of Sean Peterson (photographer).
QnAs with NAS member and plant biologist Sheng Yang He
Image courtesy of Sheng Yang He.