Research Article

Skew-Laplace and Cell-Size Distribution in Microbial Axenic Cultures: Statistical Assessment and Biological Interpretation

Table 1

Strains used in the present study and the highest (or maximal) 𝑁 c r i t values obtained.

StrainReference codeB/CFSSSMultisizer

Acinetobacter calcoaceticusCECT 441TB *955 (20 h) **1260 (6 h) *511 (20 h)
Aeromonas hydrophylaCECT 5174B *1554 (20 h) **1638 (6 h) *757 (6 h)
Alcaligenes faecalis ssp. faecalis CECT 145B *1615 (6 h) *749 (20 h) *513 (6 h)
Alteromonas macleodiiCECT 4198TB **459 (6 h) *472 (36 h) *406 (20 h)
Arthrobacter globiformisCECT 388TB *707 (6 h) *523 (36 h) *197 (20 h)
Bacillus megateriumCECT 44B **726 (20 h) *1063 (36 h) **112 (36 h)
Bacillus subtilisCECT 35B **744 (36 h) **3013 (20 h) *809 (20 h)
Corynebacterium variabileCECT 4164B *594 (6 h) *432 (6 h) **444 (20 h)
Enterobacter aerogenesCECT 684TB *2751 (6 h) **1186(36 h) **247 (20 h)
Escherichia coliATCC 8731B *1899 (36 h) **546 (20 h) **611 (36 h)
Micrococcus luteusCECT 243B **555 (36 h) *1612 (6 h) *734 (36 h)
Paracoccus denitrificansCECT 694B **1485 (6 h) *2641 (6 h) **316 (20 h)
Proteus mirabilisCECT 170B *936 (6 h) **1615 (20 h) *230 (6 h)
Pseudomonas aeruginosaCECT 180B *4255 (6 h) **990 (20 h) **266 (6 h)
Pseudomonas stutzeriCECT 930TB *467 (36 h) *933 (6 h) **303 (20 h)
Salmonella choleraesuis ssp. arizonae CECT 4395B *2888 (6 h) **582 (20 h) **1777 (6 h)
Staphylococcus aureus ssp. aureusCECT 59B **1770 (20 h) *2043 (20 h) **1346 (6 h)
Streptococcus mutansCECT 479TB *952 (6 h) *4205 (6 h)0
Streptomyces antibioticusCECT 3213B *1415 (6 h) *4307 (6 h) **217 (36 h)
Streptomyces griseus sp. griseusCECT 3102B *1697 (6 h) *642 (6 h)0
Vibrio fischeriCECT 524TB **533 (6 h) *257 (6 h) **146 (36 h)
Xanthomonas campestrisCECT 95B **795 (6 h) *1227 (6 h) **180 (36 h)
Candida albicansCECT 1001B *300 (36 h) **336 (20 h) **301 (20 h)
Candida auringiensisCECT 10611B **143 (20 h) *607 (6 h) **321 (20 h)
Pichia guillermondiiCECT 1019B **1210 (36 h) *548 (6 h) **187 (20 h)
Saccharomyces cerevisiaeCECT 1170B *525 (6 h) *1290 (20 h) **204 (6 h)
Saccheromyces exiguusCECT 1206B **734 (20 h) *698 (20 h) **86 (6 h)
Zygosaccharomyces fermentatiCECT 10022B *690 (20 h) *339 (6 h) **1810 (36 h)
Escherichia coliATCC 8731C *730 (0.96 h-1) **1043 (1.92 h-1) *994 (1.33 h-1)
Staphylococcus aureusCECT59C *2602 (0.96 h-1) *2134 (0.96 h-1) *285 (0.66 h-1)
Bacillus subtilisCECT 35C **124 (0.006 h-1) *424 (0.006 h-1) **516 (0.006 h-1)

1 Batch cultures were obtained at 6, 20, and 36 hours of incubation while continuous cultures were obtained at dilution rates (D) ranging from 0.36 to 1.92 h-1. The incubation time for the bath cultures where the maximum are reached are indicated into brackets. For continuous culture, into brackets are shown the dilution rates where the maximum are obtained.
2 CECT: Colección Española de Cultivos Tipo (Spain). ATTC: American Type Culture Colection (USA).
3 The 𝑁 c r i t values were obtained from skew-Laplace (*) and log skew-Laplace (**) fits in the studied batch (B) and continuous (C) cultures.