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Table 1 Description of parameters extracted from growth curves and summary data for SS and FS ecotypes (isolated from strain dst1018).

From: Experimental demonstration of ecological character displacement

Parameter

Explanation

Slow-switcher (SS)

Mean (95% CI)

Fast switcher (FS)

Mean (95% CI)

StartTime

Time where optical density (OD) can be easily detected (OD = 0.08 at 600 nm) – not directly included in the analysis, but included in calculation of rmaxgluTP, timeToRmaxglu, SP, rmaxaceTP, and ODmaxTP.

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rmaxglu

Maximum growth rate during "glucose phase" of diauxie.

0.081 (0.076–0.086)

0.083 (0.077–0.089)

rmaxgluTP

rmaxglu time point – StartTime.

23.5 (22.9–24.2)

27.6 (26.7–28.5)

SP

Switching (Time) Point from glucose to acetate phase – StartTime.

32.2 (31.8–32.7)

31.9 (31.4–32.4)

ODSP

OD of switching point.

0.24 (0.23–0.25)

0.25 (0.24–0.26)

Lagace

Switching lag (time) from glucose to acetate growth

82.7 (76.3–89.0)

17.2 (10.4–24.0)

rmaxace

Maximum growth rate during "acetate phase" of diauxie.

0.0020 (0.0015–0.0024)

0.028 (0.023–0.034)

rmaxaceTP

rmaxace time point – StartTime

114.9 (108.7–121.2)

49.0 (42.2–55.9)

ODmax

Maximum OD.

0.24 (0.23–0.25)

0.36 (0.34–0.38)

ODmaxTP

ODmax timepoint -StartTime

49.2 (35.2–63.2)

80.5 (72.6–88.4)

ODfinal

Yield or OD at the end of the 24 hour period.

0.19 (0.19–0.20)

0.32 (0.31–0.33)