TABLE 1

Summary statistics for mean body volume

Strain (species)DF (O. myr)EM (O. myr)N2 (C. el)PB306 (C. el)HK (C. br)PB800 (C. br)
Embedded Image(×103)4.060 (0.449)3.723 (0.344)1.374 (0.0.089)1.604 (0.0.054)1.060 (0.0.051)1.116 (0.0.058)
Embedded Image(×103)3.348 (0.489)2.686 (0.260)1.171 (0.0.093)1.369 (0.0.073)0.725 (0.0.067)0.843 (0.070)
log(Embedded Image)−5.571 (0.117)−5.756 (0.114)−6.623 (0.079)−6.468 (0.026)−6.895 (0.059)−6.778 (0.057)
log(Embedded Image)−5.894 (0.142)−6.061 (0.096)−6.837 (0.088)−6.679 (0.061)−7.392 (0.098)−7.194 (0.077)
Rm (×103)−1.62 (0.47)ab−1.53 (0.53)ab−1.07 (0.26)a−1.11 (0.33)a−2.49 (0.47)b−2.10 (0.30)b
ΔEmbedded Image (×103)−0.891−1.358−0.746−0.706−1.714−1.409
(−1.437, −0.294)(−1.990, −0.635)(−1.066, −0.388)(−1.104, −0.268)(−2.220, −1.157)(−1.802, −0.988)
  • Values are means, standard errors are in parentheses. The 95% CL of Δz is shown below the mean. Embedded Image, mean body volume (×102 mm3) at generation zero (control); Embedded Image, mean body volume after 200 generations of MA; Rm, regression slope of log(volume) on generation; Δz, per-generation percentage of change in mean (untransformed) body size. O. myr, O. myriophila; C. el, C. elegans; C. br, C. briggsae.

  • a,b Rm differs significantly between species with different superscripts.