Table 4 Results from the mixed-model nested ANOVAs on differentiation of life-history traits of cave molly females raised under different light and food regimes.

From: Sex-specific local life-history adaptation in surface- and cave-dwelling Atlantic mollies (Poecilia mexicana)

Trait

Light regime

Food regime

Light regime × Food regime

Growth rate [mm/day]

χ 2  = 5.244, P  = 0.022

χ 2  = 62.365, P  < 0.0001

(χ2 = 0.027, P = 0.87)

Age at 1st parturition [d]

χ 2  = 4.737, P  = 0.030

χ 2  = 17.584, P  < 0.0001

(χ2 = 0.127, P = 0.72)

SL at 1st parturition [mm]

χ2 = 0.102, P = 0.75

χ 2  = 11.238, P  = 0.0008

(χ2 = 0.002, P = 0.97)

SL at 3rd parturition [mm]

χ 2  = 6.658, P  = 0.010

χ 2  = 27.378, P  < 0.0001

(χ2 = 1.094, P = 0.30)

Lean weight at 3rd parturition [g]

χ 2  = 4.278, P  = 0.039

χ2 = 2.400, P = 0.12

(χ2 = 0.027, P = 0.87)

Fat content at 3rd parturition [%]

χ 2  = 5.031, P  = 0.025

χ 2  = 13.961, P  = 0.0002

(χ2 = 1.758, P = 0.18)

RA [%]

χ 2  = 7.418, P  = 0.0065

χ2 = 1.514, P = 0.22

(χ2 = 0.194, P = 0.66)

Neonate SL [mm]

χ 2  = 4.749, P  = 0.029

χ2 = 0.0041, P = 0.95

χ2 = 3.204, P = 0.074

Neonate dry weight [mg]

χ2 = 0.221, P = 0.64

χ2 = 0.148, P = 0.70

(χ2 = 0.088, P = 0.77)

Neonate fat content [%]

χ2 = 0.004, P = 0.95

χ2 = 0.073, P = 0.79

χ2 = 2.725, P = 0.099

  1. Fixed effects were ‘light regime (dark vs. light:dark)’ and ‘food regime (high vs. low)’, while ‘mother ID’ and ‘block(room)’ were included as random effects. Significant test statistics are in bold; test statistics in parentheses refer to non-significant interactions that were removed from the final model.
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